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{
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"cells": [
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"attachments": {},
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"cell_type": "markdown",
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"id": "cb1537e6",
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"metadata": {},
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"source": [
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"# Using Redis as a Vector Database with OpenAI\n",
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"\n",
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"This notebook provides an introduction to using Redis as a vector database with OpenAI embeddings. Redis is a scalable, real-time database that can be used as a vector database when using the [RediSearch Module](https://oss.redislabs.com/redisearch/). The RediSearch module allows you to index and search for vectors in Redis. This notebook will show you how to use the RediSearch module to index and search for vectors created by using the OpenAI API and stored in Redis.\n",
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"\n",
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"### What is Redis?\n",
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"\n",
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"Most developers from a web services background are probably familiar with Redis. At it's core, Redis is an open-source key-value store that can be used as a cache, message broker, and database. Developers choice Redis because it is fast, has a large ecosystem of client libraries, and has been deployed by major enterprises for years.\n",
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"\n",
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"In addition to the traditional uses of Redis. Redis also provides [Redis Modules](https://redis.io/modules) which are a way to extend Redis with new data types and commands. Example modules include [RedisJSON](https://redis.io/docs/stack/json/), [RedisTimeSeries](https://redis.io/docs/stack/timeseries/), [RedisBloom](https://redis.io/docs/stack/bloom/) and [RediSearch](https://redis.io/docs/stack/search/).\n",
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"\n",
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"### What is RediSearch?\n",
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"\n",
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"RediSearch is a [Redis module](https://redis.io/modules) that provides querying, secondary indexing, full-text search and vector search for Redis. To use RediSearch, you first declare indexes on your Redis data. You can then use the RediSearch clients to query that data. For more information on the feature set of RediSearch, see the [README](./README.md) or the [RediSearch documentation](https://redis.io/docs/stack/search/).\n",
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"\n",
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"### Deployment options\n",
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"\n",
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"There are a number of ways to deploy Redis. For local development, the quickest method is to use the [Redis Stack docker container](https://hub.docker.com/r/redis/redis-stack) which we will use here. Redis Stack contains a number of Redis modules that can be used together to create a fast, multi-model data store and query engine.\n",
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"\n",
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"For production use cases, The easiest way to get started is to use the [Redis Cloud](https://redislabs.com/redis-enterprise-cloud/overview/) service. Redis Cloud is a fully managed Redis service. You can also deploy Redis on your own infrastructure using [Redis Enterprise](https://redislabs.com/redis-enterprise/overview/). Redis Enterprise is a fully managed Redis service that can be deployed in kubernetes, on-premises or in the cloud.\n",
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"\n",
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"Additionally, every major cloud provider ([AWS Marketplace](https://aws.amazon.com/marketplace/pp/prodview-e6y7ork67pjwg?sr=0-2&ref_=beagle&applicationId=AWSMPContessa), [Google Marketplace](https://console.cloud.google.com/marketplace/details/redislabs-public/redis-enterprise?pli=1), or [Azure Marketplace](https://azuremarketplace.microsoft.com/en-us/marketplace/apps/garantiadata.redis_enterprise_1sp_public_preview?tab=Overview)) offers Redis Enterprise in a marketplace offering.\n",
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"\n"
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]
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},
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{
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"attachments": {},
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"cell_type": "markdown",
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"id": "f1a618c5",
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"metadata": {},
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"source": [
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"## Prerequisites\n",
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"\n",
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"Before we start this project, we need setup the following:\n",
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"\n",
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"* start a Redis database with RediSearch (redis-stack)\n",
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"* install libraries\n",
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" * [Redis-py](https://github.com/redis/redis-py)\n",
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"* get your [OpenAI API key](https://beta.openai.com/account/api-keys)\n",
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"\n",
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"===========================================================\n",
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"\n",
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"### Start Redis\n",
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"\n",
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"To keep this example simple, we will use the Redis Stack docker container which we can start as follows\n",
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"\n",
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"```bash\n",
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"$ docker compose up -d\n",
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"```\n",
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"\n",
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"This also includes the [RedisInsight](https://redis.com/redis-enterprise/redis-insight/) GUI for managing your Redis database which you can view at [http://localhost:8001](http://localhost:8001) once you start the docker container.\n",
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"\n",
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"You're all set up and ready to go! Next, we import and create our client for communicating with the Redis database we just created."
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]
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},
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{
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"attachments": {},
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"cell_type": "markdown",
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"id": "b9babafe",
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"metadata": {},
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"source": [
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"## Install Requirements\n",
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"\n",
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"Redis-Py is the python client for communicating with Redis. We will use this to communicate with our Redis-stack database. "
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "2b04113f",
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"metadata": {},
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"outputs": [],
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"source": [
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"!pip install redis wget pandas openai"
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]
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},
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{
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"attachments": {},
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"cell_type": "markdown",
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"id": "36fe86f4",
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"metadata": {},
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"source": [
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"===========================================================\n",
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"## Prepare your OpenAI API key\n",
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"\n",
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"The `OpenAI API key` is used for vectorization of query data.\n",
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"\n",
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"If you don't have an OpenAI API key, you can get one from [https://beta.openai.com/account/api-keys](https://beta.openai.com/account/api-keys).\n",
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"\n",
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"Once you get your key, please add it to your environment variables as `OPENAI_API_KEY`."
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]
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},
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{
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"cell_type": "code",
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"execution_count": 2,
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"id": "88be138c",
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"OPENAI_API_KEY is ready\n"
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]
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}
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],
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"source": [
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"# Test that your OpenAI API key is correctly set as an environment variable\n",
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"# Note. if you run this notebook locally, you will need to reload your terminal and the notebook for the env variables to be live.\n",
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"import os\n",
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"import openai\n",
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"\n",
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"# Note. alternatively you can set a temporary env variable like this:\n",
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"# os.environ[\"OPENAI_API_KEY\"] = 'sk-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'\n",
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"\n",
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"if os.getenv(\"OPENAI_API_KEY\") is not None:\n",
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" openai.api_key = os.getenv(\"OPENAI_API_KEY\")\n",
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" print (\"OPENAI_API_KEY is ready\")\n",
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"else:\n",
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" print (\"OPENAI_API_KEY environment variable not found\")"
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]
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},
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{
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"attachments": {},
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"cell_type": "markdown",
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"id": "97fefe4c",
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"metadata": {},
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"source": [
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"## Load data\n",
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"\n",
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"In this section we'll load embedded data that has already been converted into vectors. We'll use this data to create an index in Redis and then search for similar vectors."
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]
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},
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{
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"cell_type": "code",
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"execution_count": 3,
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"id": "9fbebe0d",
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"metadata": {},
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"outputs": [
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"File Downloaded\n"
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]
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},
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{
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"data": {
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"text/html": [
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"<div>\n",
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"<style scoped>\n",
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" .dataframe tbody tr th:only-of-type {\n",
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"\n",
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" .dataframe tbody tr th {\n",
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" vertical-align: top;\n",
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" }\n",
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"\n",
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" .dataframe thead th {\n",
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" text-align: right;\n",
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" }\n",
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"</style>\n",
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"<table border=\"1\" class=\"dataframe\">\n",
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" <thead>\n",
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" <tr style=\"text-align: right;\">\n",
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" <th></th>\n",
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" <th>id</th>\n",
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" <th>url</th>\n",
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" <th>title</th>\n",
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" <th>text</th>\n",
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" <th>title_vector</th>\n",
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" <th>content_vector</th>\n",
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" <th>vector_id</th>\n",
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" <th>0</th>\n",
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" <td>1</td>\n",
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" <td>https://simple.wikipedia.org/wiki/April</td>\n",
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" <td>April</td>\n",
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" </tr>\n",
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" <td>2</td>\n",
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" <td>https://simple.wikipedia.org/wiki/August</td>\n",
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" <td>https://simple.wikipedia.org/wiki/Art</td>\n",
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" <td>Art</td>\n",
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" <td>Art is a creative activity that expresses imag...</td>\n",
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" <td>[0.003393713850528002, 0.0061537534929811954, ...</td>\n",
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" <td>[-0.004959689453244209, 0.015772193670272827, ...</td>\n",
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" <td>2</td>\n",
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" </tr>\n",
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" <td>https://simple.wikipedia.org/wiki/A</td>\n",
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" <td>A</td>\n",
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" <td>A or a is the first letter of the English alph...</td>\n",
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" <td>[0.0153952119871974, -0.013759135268628597, 0....</td>\n",
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" <tr>\n",
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" <td>https://simple.wikipedia.org/wiki/Air</td>\n",
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" <td>Air</td>\n",
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" <td>[0.02224554680287838, -0.02044147066771984, -0...</td>\n",
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" <td>4</td>\n",
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],
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"text/plain": [
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" id url title \\\n",
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"0 1 https://simple.wikipedia.org/wiki/April April \n",
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"1 2 https://simple.wikipedia.org/wiki/August August \n",
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"2 6 https://simple.wikipedia.org/wiki/Art Art \n",
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"3 8 https://simple.wikipedia.org/wiki/A A \n",
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"4 9 https://simple.wikipedia.org/wiki/Air Air \n",
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"\n",
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" text \\\n",
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"0 April is the fourth month of the year in the J... \n",
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"1 August (Aug.) is the eighth month of the year ... \n",
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"2 Art is a creative activity that expresses imag... \n",
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"3 A or a is the first letter of the English alph... \n",
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"4 Air refers to the Earth's atmosphere. Air is a... \n",
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"\n",
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" title_vector \\\n",
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"0 [0.001009464613161981, -0.020700545981526375, ... \n",
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"1 [0.0009286514250561595, 0.000820168002974242, ... \n",
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"2 [0.003393713850528002, 0.0061537534929811954, ... \n",
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"3 [0.0153952119871974, -0.013759135268628597, 0.... \n",
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"4 [0.02224554680287838, -0.02044147066771984, -0... \n",
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"\n",
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" content_vector vector_id \n",
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"0 [-0.011253940872848034, -0.013491976074874401,... 0 \n",
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"1 [0.0003609954728744924, 0.007262262050062418, ... 1 \n",
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"2 [-0.004959689453244209, 0.015772193670272827, ... 2 \n",
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"3 [0.024894846603274345, -0.022186409682035446, ... 3 \n",
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"4 [0.021524671465158463, 0.018522677943110466, -... 4 "
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]
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},
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"execution_count": 3,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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|
|
"import sys\n",
|
|
|
|
|
"import numpy as np\n",
|
|
|
|
|
"import pandas as pd\n",
|
|
|
|
|
"from typing import List\n",
|
|
|
|
|
"\n",
|
|
|
|
|
"# use helper function in nbutils.py to download and read the data\n",
|
|
|
|
|
"# this should take from 5-10 min to run\n",
|
|
|
|
|
"if os.getcwd() not in sys.path:\n",
|
|
|
|
|
" sys.path.append(os.getcwd())\n",
|
|
|
|
|
"import nbutils\n",
|
|
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|
|
"\n",
|
|
|
|
|
"nbutils.download_wikipedia_data()\n",
|
|
|
|
|
"data = nbutils.read_wikipedia_data()\n",
|
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|
"\n",
|
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|
"data.head()"
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|
]
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},
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{
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"attachments": {},
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"cell_type": "markdown",
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"id": "91df4d5b",
|
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"metadata": {},
|
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"source": [
|
|
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|
"## Connect to Redis\n",
|
|
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|
"\n",
|
|
|
|
|
"Now that we have our Redis database running, we can connect to it using the Redis-py client. We will use the default host and port for the Redis database which is `localhost:6379`.\n",
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"\n"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 4,
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"id": "cc662c1b",
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"metadata": {},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"True"
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]
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},
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"execution_count": 4,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"import redis\n",
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"from redis.commands.search.indexDefinition import (\n",
|
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" IndexDefinition,\n",
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" IndexType\n",
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")\n",
|
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|
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"from redis.commands.search.query import Query\n",
|
|
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|
|
"from redis.commands.search.field import (\n",
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|
" TextField,\n",
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" VectorField\n",
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")\n",
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"\n",
|
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|
|
"REDIS_HOST = \"localhost\"\n",
|
|
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|
|
"REDIS_PORT = 6379\n",
|
|
|
|
|
"REDIS_PASSWORD = \"\" # default for passwordless Redis\n",
|
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|
|
"\n",
|
|
|
|
|
"# Connect to Redis\n",
|
|
|
|
|
"redis_client = redis.Redis(\n",
|
|
|
|
|
" host=REDIS_HOST,\n",
|
|
|
|
|
" port=REDIS_PORT,\n",
|
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|
|
|
" password=REDIS_PASSWORD\n",
|
|
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|
|
")\n",
|
|
|
|
|
"redis_client.ping()"
|
|
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|
]
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|
},
|
|
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|
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{
|
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|
"attachments": {},
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|
"cell_type": "markdown",
|
|
|
|
|
"id": "7d3dac3c",
|
|
|
|
|
"metadata": {},
|
|
|
|
|
"source": [
|
|
|
|
|
"## Creating a Search Index in Redis\n",
|
|
|
|
|
"\n",
|
|
|
|
|
"The below cells will show how to specify and create a search index in Redis. We will\n",
|
|
|
|
|
"\n",
|
|
|
|
|
"1. Set some constants for defining our index like the distance metric and the index name\n",
|
|
|
|
|
"2. Define the index schema with RediSearch fields\n",
|
|
|
|
|
"3. Create the index"
|
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|
|
|
]
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
"cell_type": "code",
|
|
|
|
|
"execution_count": 5,
|
|
|
|
|
"id": "f894b911",
|
|
|
|
|
"metadata": {
|
|
|
|
|
"scrolled": true
|
|
|
|
|
},
|
|
|
|
|
"outputs": [],
|
|
|
|
|
"source": [
|
|
|
|
|
"# Constants\n",
|
|
|
|
|
"VECTOR_DIM = len(data['title_vector'][0]) # length of the vectors\n",
|
|
|
|
|
"VECTOR_NUMBER = len(data) # initial number of vectors\n",
|
|
|
|
|
"INDEX_NAME = \"embeddings-index\" # name of the search index\n",
|
|
|
|
|
"PREFIX = \"doc\" # prefix for the document keys\n",
|
|
|
|
|
"DISTANCE_METRIC = \"COSINE\" # distance metric for the vectors (ex. COSINE, IP, L2)"
|
|
|
|
|
]
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
"cell_type": "code",
|
|
|
|
|
"execution_count": 6,
|
|
|
|
|
"id": "15db8380",
|
|
|
|
|
"metadata": {},
|
|
|
|
|
"outputs": [],
|
|
|
|
|
"source": [
|
|
|
|
|
"# Define RediSearch fields for each of the columns in the dataset\n",
|
|
|
|
|
"title = TextField(name=\"title\")\n",
|
|
|
|
|
"url = TextField(name=\"url\")\n",
|
|
|
|
|
"text = TextField(name=\"text\")\n",
|
|
|
|
|
"title_embedding = VectorField(\"title_vector\",\n",
|
|
|
|
|
" \"FLAT\", {\n",
|
|
|
|
|
" \"TYPE\": \"FLOAT32\",\n",
|
|
|
|
|
" \"DIM\": VECTOR_DIM,\n",
|
|
|
|
|
" \"DISTANCE_METRIC\": DISTANCE_METRIC,\n",
|
|
|
|
|
" \"INITIAL_CAP\": VECTOR_NUMBER,\n",
|
|
|
|
|
" }\n",
|
|
|
|
|
")\n",
|
|
|
|
|
"text_embedding = VectorField(\"content_vector\",\n",
|
|
|
|
|
" \"FLAT\", {\n",
|
|
|
|
|
" \"TYPE\": \"FLOAT32\",\n",
|
|
|
|
|
" \"DIM\": VECTOR_DIM,\n",
|
|
|
|
|
" \"DISTANCE_METRIC\": DISTANCE_METRIC,\n",
|
|
|
|
|
" \"INITIAL_CAP\": VECTOR_NUMBER,\n",
|
|
|
|
|
" }\n",
|
|
|
|
|
")\n",
|
|
|
|
|
"fields = [title, url, text, title_embedding, text_embedding]"
|
|
|
|
|
]
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
"cell_type": "code",
|
|
|
|
|
"execution_count": 7,
|
|
|
|
|
"id": "3658693c",
|
|
|
|
|
"metadata": {},
|
|
|
|
|
"outputs": [],
|
|
|
|
|
"source": [
|
|
|
|
|
"# Check if index exists\n",
|
|
|
|
|
"try:\n",
|
|
|
|
|
" redis_client.ft(INDEX_NAME).info()\n",
|
|
|
|
|
" print(\"Index already exists\")\n",
|
|
|
|
|
"except:\n",
|
|
|
|
|
" # Create RediSearch Index\n",
|
|
|
|
|
" redis_client.ft(INDEX_NAME).create_index(\n",
|
|
|
|
|
" fields = fields,\n",
|
|
|
|
|
" definition = IndexDefinition(prefix=[PREFIX], index_type=IndexType.HASH)\n",
|
|
|
|
|
")"
|
|
|
|
|
]
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
"attachments": {},
|
|
|
|
|
"cell_type": "markdown",
|
|
|
|
|
"id": "775c15b4",
|
|
|
|
|
"metadata": {},
|
|
|
|
|
"source": [
|
|
|
|
|
"## Load Documents into the Index\n",
|
|
|
|
|
"\n",
|
|
|
|
|
"Now that we have a search index, we can load documents into it. We will use the same documents we used in the previous examples. In Redis, either the Hash or JSON (if using RedisJSON in addition to RediSearch) data types can be used to store documents. We will use the HASH data type in this example. The below cells will show how to load documents into the index."
|
|
|
|
|
]
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
"cell_type": "code",
|
|
|
|
|
"execution_count": 8,
|
|
|
|
|
"id": "0d791186",
|
|
|
|
|
"metadata": {},
|
|
|
|
|
"outputs": [],
|
|
|
|
|
"source": [
|
|
|
|
|
"def index_documents(client: redis.Redis, prefix: str, documents: pd.DataFrame):\n",
|
|
|
|
|
" records = documents.to_dict(\"records\")\n",
|
|
|
|
|
" for doc in records:\n",
|
|
|
|
|
" key = f\"{prefix}:{str(doc['id'])}\"\n",
|
|
|
|
|
"\n",
|
|
|
|
|
" # create byte vectors for title and content\n",
|
|
|
|
|
" title_embedding = np.array(doc[\"title_vector\"], dtype=np.float32).tobytes()\n",
|
|
|
|
|
" content_embedding = np.array(doc[\"content_vector\"], dtype=np.float32).tobytes()\n",
|
|
|
|
|
"\n",
|
|
|
|
|
" # replace list of floats with byte vectors\n",
|
|
|
|
|
" doc[\"title_vector\"] = title_embedding\n",
|
|
|
|
|
" doc[\"content_vector\"] = content_embedding\n",
|
|
|
|
|
"\n",
|
|
|
|
|
" client.hset(key, mapping = doc)"
|
|
|
|
|
]
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
"cell_type": "code",
|
|
|
|
|
"execution_count": 9,
|
|
|
|
|
"id": "5bfaeafa",
|
|
|
|
|
"metadata": {},
|
|
|
|
|
"outputs": [
|
|
|
|
|
{
|
|
|
|
|
"name": "stdout",
|
|
|
|
|
"output_type": "stream",
|
|
|
|
|
"text": [
|
|
|
|
|
"Loaded 25000 documents in Redis search index with name: embeddings-index\n"
|
|
|
|
|
]
|
|
|
|
|
}
|
|
|
|
|
],
|
|
|
|
|
"source": [
|
|
|
|
|
"index_documents(redis_client, PREFIX, data)\n",
|
|
|
|
|
"print(f\"Loaded {redis_client.info()['db0']['keys']} documents in Redis search index with name: {INDEX_NAME}\")"
|
|
|
|
|
]
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
"attachments": {},
|
|
|
|
|
"cell_type": "markdown",
|
|
|
|
|
"id": "46050ca9",
|
|
|
|
|
"metadata": {},
|
|
|
|
|
"source": [
|
|
|
|
|
"## Simple Vector Search Queries with OpenAI Query Embeddings\n",
|
|
|
|
|
"\n",
|
|
|
|
|
"Now that we have a search index and documents loaded into it, we can run search queries. Below we will provide a function that will run a search query and return the results. Using this function we run a few queries that will show how you can utilize Redis as a vector database."
|
|
|
|
|
]
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
"cell_type": "code",
|
|
|
|
|
"execution_count": 10,
|
|
|
|
|
"id": "b044aa93",
|
|
|
|
|
"metadata": {},
|
|
|
|
|
"outputs": [],
|
|
|
|
|
"source": [
|
|
|
|
|
"def search_redis(\n",
|
|
|
|
|
" redis_client: redis.Redis,\n",
|
|
|
|
|
" user_query: str,\n",
|
|
|
|
|
" index_name: str = \"embeddings-index\",\n",
|
|
|
|
|
" vector_field: str = \"title_vector\",\n",
|
|
|
|
|
" return_fields: list = [\"title\", \"url\", \"text\", \"vector_score\"],\n",
|
|
|
|
|
" hybrid_fields = \"*\",\n",
|
|
|
|
|
" k: int = 20,\n",
|
|
|
|
|
" print_results: bool = True,\n",
|
|
|
|
|
") -> List[dict]:\n",
|
|
|
|
|
"\n",
|
|
|
|
|
" # Creates embedding vector from user query\n",
|
|
|
|
|
" embedded_query = openai.Embedding.create(input=user_query,\n",
|
|
|
|
|
" model=\"text-embedding-ada-002\",\n",
|
|
|
|
|
" )[\"data\"][0]['embedding']\n",
|
|
|
|
|
"\n",
|
|
|
|
|
" # Prepare the Query\n",
|
|
|
|
|
" base_query = f'{hybrid_fields}=>[KNN {k} @{vector_field} $vector AS vector_score]'\n",
|
|
|
|
|
" query = (\n",
|
|
|
|
|
" Query(base_query)\n",
|
|
|
|
|
" .return_fields(*return_fields)\n",
|
|
|
|
|
" .sort_by(\"vector_score\")\n",
|
|
|
|
|
" .paging(0, k)\n",
|
|
|
|
|
" .dialect(2)\n",
|
|
|
|
|
" )\n",
|
|
|
|
|
" params_dict = {\"vector\": np.array(embedded_query).astype(dtype=np.float32).tobytes()}\n",
|
|
|
|
|
"\n",
|
|
|
|
|
" # perform vector search\n",
|
|
|
|
|
" results = redis_client.ft(index_name).search(query, params_dict)\n",
|
|
|
|
|
" if print_results:\n",
|
|
|
|
|
" for i, article in enumerate(results.docs):\n",
|
|
|
|
|
" score = 1 - float(article.vector_score)\n",
|
|
|
|
|
" print(f\"{i}. {article.title} (Score: {round(score ,3) })\")\n",
|
|
|
|
|
" return results.docs"
|
|
|
|
|
]
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
"cell_type": "code",
|
|
|
|
|
"execution_count": 11,
|
|
|
|
|
"id": "7e2025f6",
|
|
|
|
|
"metadata": {},
|
|
|
|
|
"outputs": [
|
|
|
|
|
{
|
|
|
|
|
"name": "stdout",
|
|
|
|
|
"output_type": "stream",
|
|
|
|
|
"text": [
|
|
|
|
|
"0. Museum of Modern Art (Score: 0.875)\n",
|
|
|
|
|
"1. Western Europe (Score: 0.868)\n",
|
|
|
|
|
"2. Renaissance art (Score: 0.864)\n",
|
|
|
|
|
"3. Pop art (Score: 0.86)\n",
|
|
|
|
|
"4. Northern Europe (Score: 0.855)\n",
|
|
|
|
|
"5. Hellenistic art (Score: 0.853)\n",
|
|
|
|
|
"6. Modernist literature (Score: 0.847)\n",
|
|
|
|
|
"7. Art film (Score: 0.843)\n",
|
|
|
|
|
"8. Central Europe (Score: 0.843)\n",
|
|
|
|
|
"9. European (Score: 0.841)\n"
|
|
|
|
|
]
|
|
|
|
|
}
|
|
|
|
|
],
|
|
|
|
|
"source": [
|
|
|
|
|
"# For using OpenAI to generate query embedding\n",
|
|
|
|
|
"results = search_redis(redis_client, 'modern art in Europe', k=10)"
|
|
|
|
|
]
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
"cell_type": "code",
|
|
|
|
|
"execution_count": 12,
|
|
|
|
|
"id": "93c4a696",
|
|
|
|
|
"metadata": {},
|
|
|
|
|
"outputs": [
|
|
|
|
|
{
|
|
|
|
|
"name": "stdout",
|
|
|
|
|
"output_type": "stream",
|
|
|
|
|
"text": [
|
|
|
|
|
"0. Battle of Bannockburn (Score: 0.869)\n",
|
|
|
|
|
"1. Wars of Scottish Independence (Score: 0.861)\n",
|
|
|
|
|
"2. 1651 (Score: 0.853)\n",
|
|
|
|
|
"3. First War of Scottish Independence (Score: 0.85)\n",
|
|
|
|
|
"4. Robert I of Scotland (Score: 0.846)\n",
|
|
|
|
|
"5. 841 (Score: 0.844)\n",
|
|
|
|
|
"6. 1716 (Score: 0.844)\n",
|
|
|
|
|
"7. 1314 (Score: 0.837)\n",
|
|
|
|
|
"8. 1263 (Score: 0.836)\n",
|
|
|
|
|
"9. William Wallace (Score: 0.835)\n"
|
|
|
|
|
]
|
|
|
|
|
}
|
|
|
|
|
],
|
|
|
|
|
"source": [
|
|
|
|
|
"results = search_redis(redis_client, 'Famous battles in Scottish history', vector_field='content_vector', k=10)"
|
|
|
|
|
]
|
|
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},
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{
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"attachments": {},
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"cell_type": "markdown",
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"id": "2007be48",
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"metadata": {},
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"source": [
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"## Hybrid Queries with Redis\n",
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"\n",
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"The previous examples showed how run vector search queries with RediSearch. In this section, we will show how to combine vector search with other RediSearch fields for hybrid search. In the below example, we will combine vector search with full text search."
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]
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},
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{
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"cell_type": "code",
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"execution_count": 13,
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"id": "6c25ee8d",
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"0. First War of Scottish Independence (Score: 0.892)\n",
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"1. Wars of Scottish Independence (Score: 0.889)\n",
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"2. Second War of Scottish Independence (Score: 0.879)\n",
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"3. List of Scottish monarchs (Score: 0.873)\n",
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"4. Scottish Borders (Score: 0.863)\n"
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]
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}
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],
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"source": [
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"def create_hybrid_field(field_name: str, value: str) -> str:\n",
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" return f'@{field_name}:\"{value}\"'\n",
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"\n",
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"# search the content vector for articles about famous battles in Scottish history and only include results with Scottish in the title\n",
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"results = search_redis(redis_client,\n",
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" \"Famous battles in Scottish history\",\n",
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" vector_field=\"title_vector\",\n",
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" k=5,\n",
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" hybrid_fields=create_hybrid_field(\"title\", \"Scottish\")\n",
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" )"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 14,
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"id": "2c0d11d8",
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"0. Art (Score: 1.0)\n",
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"1. Paint (Score: 0.896)\n",
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"2. Renaissance art (Score: 0.88)\n",
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"3. Painting (Score: 0.874)\n",
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"4. Renaissance (Score: 0.846)\n"
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]
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},
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{
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"data": {
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"text/plain": [
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"'In Europe, after the Middle Ages, there was a \"Renaissance\" which means \"rebirth\". People rediscovered science and artists were allowed to paint subjects other than religious subjects. People like Michelangelo and Leonardo da Vinci still painted religious pictures, but they also now could paint mythological pictures too. These artists also invented perspective where things in the distance look smaller in the picture. This was new because in the Middle Ages people would paint all the figures close up and just overlapping each other. These artists used nudity regularly in their art.'"
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]
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},
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"execution_count": 14,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"# run a hybrid query for articles about Art in the title vector and only include results with the phrase \"Leonardo da Vinci\" in the text\n",
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"results = search_redis(redis_client,\n",
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" \"Art\",\n",
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" vector_field=\"title_vector\",\n",
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" k=5,\n",
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" hybrid_fields=create_hybrid_field(\"text\", \"Leonardo da Vinci\")\n",
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" )\n",
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"\n",
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|
"# find specific mention of Leonardo da Vinci in the text that our full-text-search query returned\n",
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|
"mention = [sentence for sentence in results[0].text.split(\"\\n\") if \"Leonardo da Vinci\" in sentence][0]\n",
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"mention"
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]
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},
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{
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"attachments": {},
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"cell_type": "markdown",
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"id": "f8aebbe3",
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"metadata": {},
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|
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"source": [
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"## HNSW Index\n",
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|
"\n",
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|
"Up until now, we've been using the ``FLAT`` or \"brute-force\" index to run our queries. Redis also supports the ``HNSW`` index which is a fast, approximate index. The ``HNSW`` index is a graph-based index that uses a hierarchical navigable small world graph to store vectors. The ``HNSW`` index is a good choice for large datasets where you want to run approximate queries.\n",
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|
"\n",
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"``HNSW`` will take longer to build and consume more memory for most cases than ``FLAT`` but will be faster to run queries on, especially for large datasets.\n",
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|
"\n",
|
|
|
|
|
"The following cells will show how to create an ``HNSW`` index and run queries with it using the same data as before."
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|
]
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},
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{
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|
"cell_type": "code",
|
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|
|
"execution_count": 15,
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|
|
"id": "865c30f3",
|
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"metadata": {},
|
|
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"outputs": [],
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|
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|
|
"source": [
|
|
|
|
|
"# re-define RediSearch vector fields to use HNSW index\n",
|
|
|
|
|
"title_embedding = VectorField(\"title_vector\",\n",
|
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|
" \"HNSW\", {\n",
|
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|
|
|
" \"TYPE\": \"FLOAT32\",\n",
|
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|
|
|
" \"DIM\": VECTOR_DIM,\n",
|
|
|
|
|
" \"DISTANCE_METRIC\": DISTANCE_METRIC,\n",
|
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|
|
|
" \"INITIAL_CAP\": VECTOR_NUMBER\n",
|
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|
|
" }\n",
|
|
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|
|
")\n",
|
|
|
|
|
"text_embedding = VectorField(\"content_vector\",\n",
|
|
|
|
|
" \"HNSW\", {\n",
|
|
|
|
|
" \"TYPE\": \"FLOAT32\",\n",
|
|
|
|
|
" \"DIM\": VECTOR_DIM,\n",
|
|
|
|
|
" \"DISTANCE_METRIC\": DISTANCE_METRIC,\n",
|
|
|
|
|
" \"INITIAL_CAP\": VECTOR_NUMBER\n",
|
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|
|
|
" }\n",
|
|
|
|
|
")\n",
|
|
|
|
|
"fields = [title, url, text, title_embedding, text_embedding]"
|
|
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|
|
]
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
"cell_type": "code",
|
|
|
|
|
"execution_count": 16,
|
|
|
|
|
"id": "347e1e70",
|
|
|
|
|
"metadata": {},
|
|
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|
|
"outputs": [],
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|
|
|
|
"source": [
|
|
|
|
|
"import time\n",
|
|
|
|
|
"# Check if index exists\n",
|
|
|
|
|
"HNSW_INDEX_NAME = INDEX_NAME+ \"_HNSW\"\n",
|
|
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|
|
"\n",
|
|
|
|
|
"try:\n",
|
|
|
|
|
" redis_client.ft(HNSW_INDEX_NAME).info()\n",
|
|
|
|
|
" print(\"Index already exists\")\n",
|
|
|
|
|
"except:\n",
|
|
|
|
|
" # Create RediSearch Index\n",
|
|
|
|
|
" redis_client.ft(HNSW_INDEX_NAME).create_index(\n",
|
|
|
|
|
" fields = fields,\n",
|
|
|
|
|
" definition = IndexDefinition(prefix=[PREFIX], index_type=IndexType.HASH)\n",
|
|
|
|
|
" )\n",
|
|
|
|
|
"\n",
|
|
|
|
|
"# since RediSearch creates the index in the background for existing documents, we will wait until\n",
|
|
|
|
|
"# indexing is complete before running our queries. Although this is not necessary for the first query,\n",
|
|
|
|
|
"# some queries may take longer to run if the index is not fully built. In general, Redis will perform\n",
|
|
|
|
|
"# best when adding new documents to existing indices rather than new indices on existing documents.\n",
|
|
|
|
|
"while redis_client.ft(HNSW_INDEX_NAME).info()[\"indexing\"] == \"1\":\n",
|
|
|
|
|
" time.sleep(5)"
|
|
|
|
|
]
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
"cell_type": "code",
|
|
|
|
|
"execution_count": 17,
|
|
|
|
|
"id": "8e474447",
|
|
|
|
|
"metadata": {},
|
|
|
|
|
"outputs": [
|
|
|
|
|
{
|
|
|
|
|
"name": "stdout",
|
|
|
|
|
"output_type": "stream",
|
|
|
|
|
"text": [
|
|
|
|
|
"0. Western Europe (Score: 0.868)\n",
|
|
|
|
|
"1. Northern Europe (Score: 0.855)\n",
|
|
|
|
|
"2. Central Europe (Score: 0.843)\n",
|
|
|
|
|
"3. European (Score: 0.841)\n",
|
|
|
|
|
"4. Eastern Europe (Score: 0.839)\n",
|
|
|
|
|
"5. Europe (Score: 0.839)\n",
|
|
|
|
|
"6. Western European Union (Score: 0.837)\n",
|
|
|
|
|
"7. Southern Europe (Score: 0.831)\n",
|
|
|
|
|
"8. Western civilization (Score: 0.83)\n",
|
|
|
|
|
"9. Council of Europe (Score: 0.827)\n"
|
|
|
|
|
]
|
|
|
|
|
}
|
|
|
|
|
],
|
|
|
|
|
"source": [
|
|
|
|
|
"results = search_redis(redis_client, 'modern art in Europe', index_name=HNSW_INDEX_NAME, k=10)"
|
|
|
|
|
]
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
"cell_type": "code",
|
|
|
|
|
"execution_count": 18,
|
|
|
|
|
"id": "cb799e69",
|
|
|
|
|
"metadata": {},
|
|
|
|
|
"outputs": [
|
|
|
|
|
{
|
|
|
|
|
"name": "stdout",
|
|
|
|
|
"output_type": "stream",
|
|
|
|
|
"text": [
|
|
|
|
|
" ----- Flat Index ----- \n",
|
|
|
|
|
"0. Museum of Modern Art (Score: 0.875)\n",
|
|
|
|
|
"1. Western Europe (Score: 0.867)\n",
|
|
|
|
|
"2. Renaissance art (Score: 0.864)\n",
|
|
|
|
|
"3. Pop art (Score: 0.861)\n",
|
|
|
|
|
"4. Northern Europe (Score: 0.855)\n",
|
|
|
|
|
"5. Hellenistic art (Score: 0.853)\n",
|
|
|
|
|
"6. Modernist literature (Score: 0.847)\n",
|
|
|
|
|
"7. Art film (Score: 0.843)\n",
|
|
|
|
|
"8. Central Europe (Score: 0.843)\n",
|
|
|
|
|
"9. Art (Score: 0.842)\n",
|
|
|
|
|
"Flat index query time: 0.263 seconds\n",
|
|
|
|
|
"\n",
|
|
|
|
|
" ----- HNSW Index ------ \n",
|
|
|
|
|
"0. Western Europe (Score: 0.867)\n",
|
|
|
|
|
"1. Northern Europe (Score: 0.855)\n",
|
|
|
|
|
"2. Central Europe (Score: 0.843)\n",
|
|
|
|
|
"3. European (Score: 0.841)\n",
|
|
|
|
|
"4. Eastern Europe (Score: 0.839)\n",
|
|
|
|
|
"5. Europe (Score: 0.839)\n",
|
|
|
|
|
"6. Western European Union (Score: 0.837)\n",
|
|
|
|
|
"7. Southern Europe (Score: 0.831)\n",
|
|
|
|
|
"8. Western civilization (Score: 0.83)\n",
|
|
|
|
|
"9. Council of Europe (Score: 0.827)\n",
|
|
|
|
|
"HNSW index query time: 0.129 seconds\n",
|
|
|
|
|
" ------------------------ \n"
|
|
|
|
|
]
|
|
|
|
|
}
|
|
|
|
|
],
|
|
|
|
|
"source": [
|
|
|
|
|
"# compare the results of the HNSW index to the FLAT index and time both queries\n",
|
|
|
|
|
"def time_queries(iterations: int = 10):\n",
|
|
|
|
|
" print(\" ----- Flat Index ----- \")\n",
|
|
|
|
|
" t0 = time.time()\n",
|
|
|
|
|
" for i in range(iterations):\n",
|
|
|
|
|
" results_flat = search_redis(redis_client, 'modern art in Europe', k=10, print_results=False)\n",
|
|
|
|
|
" t0 = (time.time() - t0) / iterations\n",
|
|
|
|
|
" results_flat = search_redis(redis_client, 'modern art in Europe', k=10, print_results=True)\n",
|
|
|
|
|
" print(f\"Flat index query time: {round(t0, 3)} seconds\\n\")\n",
|
|
|
|
|
" time.sleep(1)\n",
|
|
|
|
|
" print(\" ----- HNSW Index ------ \")\n",
|
|
|
|
|
" t1 = time.time()\n",
|
|
|
|
|
" for i in range(iterations):\n",
|
|
|
|
|
" results_hnsw = search_redis(redis_client, 'modern art in Europe', index_name=HNSW_INDEX_NAME, k=10, print_results=False)\n",
|
|
|
|
|
" t1 = (time.time() - t1) / iterations\n",
|
|
|
|
|
" results_hnsw = search_redis(redis_client, 'modern art in Europe', index_name=HNSW_INDEX_NAME, k=10, print_results=True)\n",
|
|
|
|
|
" print(f\"HNSW index query time: {round(t1, 3)} seconds\")\n",
|
|
|
|
|
" print(\" ------------------------ \")\n",
|
|
|
|
|
"time_queries()"
|
|
|
|
|
]
|
|
|
|
|
},
|
|
|
|
|
{
|
|
|
|
|
"cell_type": "code",
|
|
|
|
|
"execution_count": null,
|
|
|
|
|
"id": "69aa7a09",
|
|
|
|
|
"metadata": {},
|
|
|
|
|
"outputs": [],
|
|
|
|
|
"source": []
|
|
|
|
|
}
|
|
|
|
|
],
|
|
|
|
|
"metadata": {
|
|
|
|
|
"kernelspec": {
|
|
|
|
|
"display_name": "redisvl2",
|
|
|
|
|
"language": "python",
|
|
|
|
|
"name": "python3"
|
|
|
|
|
},
|
|
|
|
|
"language_info": {
|
|
|
|
|
"codemirror_mode": {
|
|
|
|
|
"name": "ipython",
|
|
|
|
|
"version": 3
|
|
|
|
|
},
|
|
|
|
|
"file_extension": ".py",
|
|
|
|
|
"mimetype": "text/x-python",
|
|
|
|
|
"name": "python",
|
|
|
|
|
"nbconvert_exporter": "python",
|
|
|
|
|
"pygments_lexer": "ipython3",
|
|
|
|
|
"version": "3.8.13"
|
|
|
|
|
},
|
|
|
|
|
"vscode": {
|
|
|
|
|
"interpreter": {
|
|
|
|
|
"hash": "9b1e6e9c2967143209c2f955cb869d1d3234f92dc4787f49f155f3abbdfb1316"
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
},
|
|
|
|
|
"nbformat": 4,
|
|
|
|
|
"nbformat_minor": 5
|
|
|
|
|
}
|
colin-openai
2 years ago
committed by
GitHub