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19
docs/extras/integrations/providers/dingo.mdx
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19
docs/extras/integrations/providers/dingo.mdx
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@ -0,0 +1,19 @@
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# Dingo
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This page covers how to use the Dingo ecosystem within LangChain.
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It is broken into two parts: installation and setup, and then references to specific Dingo wrappers.
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## Installation and Setup
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- Install the Python SDK with `pip install dingodb`
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## VectorStore
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There exists a wrapper around Dingo indexes, allowing you to use it as a vectorstore,
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whether for semantic search or example selection.
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To import this vectorstore:
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```python
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from langchain.vectorstores import Dingo
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```
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For a more detailed walkthrough of the Dingo wrapper, see [this notebook](/docs/integrations/vectorstores/dingo.html)
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244
docs/extras/integrations/vectorstores/dingo.ipynb
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244
docs/extras/integrations/vectorstores/dingo.ipynb
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@ -0,0 +1,244 @@
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{
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"cells": [
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{
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"cell_type": "markdown",
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"id": "683953b3",
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"metadata": {},
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"source": [
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"# Dingo\n",
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"\n",
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">[Dingo](https://dingodb.readthedocs.io/en/latest/) is a distributed multi-mode vector database, which combines the characteristics of data lakes and vector databases, and can store data of any type and size (Key-Value, PDF, audio, video, etc.). It has real-time low-latency processing capabilities to achieve rapid insight and response, and can efficiently conduct instant analysis and process multi-modal data.\n",
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"\n",
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"This notebook shows how to use functionality related to the DingoDB vector database.\n",
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"\n",
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"To run, you should have a [DingoDB instance up and running](https://github.com/dingodb/dingo-deploy/blob/main/README.md)."
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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": "a62cff8a-bcf7-4e33-bbbc-76999c2e3e20",
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"metadata": {
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"tags": []
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},
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"outputs": [],
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"source": [
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"!pip install dingodb"
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]
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},
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{
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"cell_type": "markdown",
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"id": "7a0f9e02-8eb0-4aef-b11f-8861360472ee",
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"metadata": {},
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"source": [
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"We want to use OpenAIEmbeddings so we have to get the 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": 1,
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"id": "8b6ed9cd-81b9-46e5-9c20-5aafca2844d0",
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"metadata": {
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"tags": []
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},
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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:········\n"
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]
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}
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],
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"source": [
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"import os\n",
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"import getpass\n",
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"\n",
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"os.environ[\"OPENAI_API_KEY\"] = getpass.getpass(\"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": "aac9563e",
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"metadata": {
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"tags": []
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},
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"outputs": [],
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"source": [
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"from langchain.embeddings.openai import OpenAIEmbeddings\n",
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"from langchain.text_splitter import CharacterTextSplitter\n",
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"from langchain.vectorstores import Dingo\n",
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"from langchain.document_loaders import TextLoader"
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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": "a3c3999a",
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"metadata": {
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"tags": []
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},
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"outputs": [],
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"source": [
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"from langchain.document_loaders import TextLoader\n",
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"\n",
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"loader = TextLoader(\"../../../state_of_the_union.txt\")\n",
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"documents = loader.load()\n",
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"text_splitter = CharacterTextSplitter(chunk_size=1000, chunk_overlap=0)\n",
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"docs = text_splitter.split_documents(documents)\n",
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"\n",
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"embeddings = OpenAIEmbeddings()"
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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": "dcf88bdf",
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"metadata": {
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"tags": []
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},
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"outputs": [],
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"source": [
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"from dingodb import DingoDB\n",
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"\n",
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"index_name = \"langchain-demo\"\n",
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"\n",
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"dingo_client = DingoDB(user=\"\", password=\"\", host=[\"127.0.0.1:13000\"])\n",
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"# First, check if our index already exists. If it doesn't, we create it\n",
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"if index_name not in dingo_client.get_index():\n",
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" # we create a new index\n",
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" dingo_client.create_index(\n",
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" index_name=index_name,\n",
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" dimension=1536,\n",
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" metric_type='cosine',\n",
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" auto_id=False\n",
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")\n",
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"\n",
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"# The OpenAI embedding model `text-embedding-ada-002 uses 1536 dimensions`\n",
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"docsearch = Dingo.from_documents(docs, embeddings, client=dingo_client, index_name=index_name)\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": null,
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"id": "c3aae49e",
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"metadata": {},
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"outputs": [],
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"source": [
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"from langchain.embeddings.openai import OpenAIEmbeddings\n",
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"from langchain.text_splitter import CharacterTextSplitter\n",
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"from langchain.vectorstores import Dingo\n",
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"from langchain.document_loaders import TextLoader"
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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": 5,
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"id": "a8c513ab",
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"metadata": {},
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"outputs": [],
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"source": [
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"query = \"What did the president say about Ketanji Brown Jackson\"\n",
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"docs = docsearch.similarity_search(query)"
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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": "fc516993",
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"metadata": {},
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"outputs": [],
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"source": [
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"print(docs[0][1])"
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]
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},
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{
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"cell_type": "markdown",
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"id": "1eca81e4",
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"metadata": {},
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"source": [
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"### Adding More Text to an Existing Index\n",
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"\n",
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"More text can embedded and upserted to an existing Dingo index using the `add_texts` function"
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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": "e40d558b",
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"metadata": {},
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"outputs": [],
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"source": [
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"vectorstore = Dingo(client, embeddings.embed_query, \"text\")\n",
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"\n",
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"vectorstore.add_texts(\"More text!\")"
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]
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},
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{
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"cell_type": "markdown",
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"id": "bcb858a8",
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"metadata": {},
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"source": [
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"### Maximal Marginal Relevance Searches\n",
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"\n",
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"In addition to using similarity search in the retriever object, you can also use `mmr` as retriever."
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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": "649083ab",
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"metadata": {},
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"outputs": [],
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"source": [
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"retriever = docsearch.as_retriever(search_type=\"mmr\")\n",
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"matched_docs = retriever.get_relevant_documents(query)\n",
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"for i, d in enumerate(matched_docs):\n",
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" print(f\"\\n## Document {i}\\n\")\n",
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" print(d.page_content)"
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]
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},
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{
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"cell_type": "markdown",
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"id": "7d3831ad",
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"metadata": {},
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"source": [
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"Or use `max_marginal_relevance_search` directly:"
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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": "732f58b1",
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"metadata": {},
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"outputs": [],
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"source": [
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"found_docs = docsearch.max_marginal_relevance_search(query, k=2, fetch_k=10)\n",
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"for i, doc in enumerate(found_docs):\n",
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" print(f\"{i + 1}.\", doc.page_content, \"\\n\")"
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]
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}
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],
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"metadata": {
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"kernelspec": {
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"display_name": "Python 3 (ipykernel)",
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"language": "python",
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"name": "python3"
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},
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"language_info": {
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"codemirror_mode": {
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"name": "ipython",
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"version": 3
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.10.11"
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}
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},
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"nbformat": 4,
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"nbformat_minor": 5
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}
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@ -34,6 +34,7 @@ from langchain.vectorstores.chroma import Chroma
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from langchain.vectorstores.clarifai import Clarifai
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from langchain.vectorstores.clickhouse import Clickhouse, ClickhouseSettings
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from langchain.vectorstores.deeplake import DeepLake
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from langchain.vectorstores.dingo import Dingo
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from langchain.vectorstores.docarray import DocArrayHnswSearch, DocArrayInMemorySearch
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from langchain.vectorstores.elastic_vector_search import (
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ElasticKnnSearch,
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@ -82,6 +83,7 @@ __all__ = [
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"Clickhouse",
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"ClickhouseSettings",
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"DeepLake",
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"Dingo",
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"DocArrayHnswSearch",
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"DocArrayInMemorySearch",
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"ElasticVectorSearch",
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349
libs/langchain/langchain/vectorstores/dingo.py
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349
libs/langchain/langchain/vectorstores/dingo.py
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@ -0,0 +1,349 @@
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"""Wrapper around the Dingo vector database."""
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from __future__ import annotations
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import logging
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import uuid
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from typing import Any, Iterable, List, Optional, Tuple
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import numpy as np
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from langchain.docstore.document import Document
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from langchain.embeddings.base import Embeddings
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from langchain.vectorstores.base import VectorStore
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from langchain.vectorstores.utils import maximal_marginal_relevance
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logger = logging.getLogger(__name__)
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class Dingo(VectorStore):
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"""Wrapper around Dingo vector database.
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To use, you should have the ``dingodb`` python package installed.
|
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|
||||
Example:
|
||||
.. code-block:: python
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|
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from langchain.vectorstores import Dingo
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from langchain.embeddings.openai import OpenAIEmbeddings
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embeddings = OpenAIEmbeddings()
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dingo = Dingo(embeddings, "text")
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"""
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def __init__(
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self,
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embedding: Embeddings,
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text_key: str,
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*,
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client: Any = None,
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index_name: Optional[str] = None,
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host: Optional[List[str]] = None,
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user: str = "root",
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password: str = "123123",
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self_id: bool = False,
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):
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"""Initialize with Dingo client."""
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try:
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import dingodb
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except ImportError:
|
||||
raise ImportError(
|
||||
"Could not import dingo python package. "
|
||||
"Please install it with `pip install dingodb."
|
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)
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host = host if host is not None else ["172.20.31.10:13000"]
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# collection
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if client is not None:
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dingo_client = client
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else:
|
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try:
|
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# connect to dingo db
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dingo_client = dingodb.DingoDB(user, password, host)
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except ValueError as e:
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raise ValueError(f"Dingo failed to connect: {e}")
|
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|
||||
self._text_key = text_key
|
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self._client = dingo_client
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if index_name is not None and index_name not in dingo_client.get_index():
|
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if self_id is True:
|
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dingo_client.create_index(index_name, 1024, auto_id=False)
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else:
|
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dingo_client.create_index(index_name, 1024)
|
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|
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self._index_name = index_name
|
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self._embedding = embedding
|
||||
|
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@property
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def embeddings(self) -> Optional[Embeddings]:
|
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return self._embedding
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|
||||
def add_texts(
|
||||
self,
|
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texts: Iterable[str],
|
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metadatas: Optional[List[dict]] = None,
|
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ids: Optional[List[str]] = None,
|
||||
text_key: str = "text",
|
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batch_size: int = 500,
|
||||
**kwargs: Any,
|
||||
) -> List[str]:
|
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"""Run more texts through the embeddings and add to the vectorstore.
|
||||
|
||||
Args:
|
||||
texts: Iterable of strings to add to the vectorstore.
|
||||
metadatas: Optional list of metadatas associated with the texts.
|
||||
ids: Optional list of ids to associate with the texts.
|
||||
|
||||
Returns:
|
||||
List of ids from adding the texts into the vectorstore.
|
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|
||||
"""
|
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# Embed and create the documents
|
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ids = ids or [str(uuid.uuid1().int)[:13] for _ in texts]
|
||||
metadatas_list = []
|
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texts = list(texts)
|
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embeds = self._embedding.embed_documents(texts)
|
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for i, text in enumerate(texts):
|
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metadata = metadatas[i] if metadatas else {}
|
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metadata[self._text_key] = text
|
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metadatas_list.append(metadata)
|
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# upsert to Dingo
|
||||
for i in range(0, len(list(texts)), batch_size):
|
||||
j = i + batch_size
|
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self._client.vector_add(
|
||||
self._index_name, metadatas_list[i:j], embeds[i:j], ids[i:j]
|
||||
)
|
||||
|
||||
return ids
|
||||
|
||||
def similarity_search(
|
||||
self,
|
||||
query: str,
|
||||
k: int = 4,
|
||||
search_params: Optional[dict] = None,
|
||||
timeout: Optional[int] = None,
|
||||
**kwargs: Any,
|
||||
) -> List[Document]:
|
||||
"""Return Dingo documents most similar to query, along with scores.
|
||||
|
||||
Args:
|
||||
query: Text to look up documents similar to.
|
||||
k: Number of Documents to return. Defaults to 4.
|
||||
search_params: Dictionary of argument(s) to filter on metadata
|
||||
|
||||
Returns:
|
||||
List of Documents most similar to the query and score for each
|
||||
"""
|
||||
docs_and_scores = self.similarity_search_with_score(
|
||||
query, k=k, search_params=search_params
|
||||
)
|
||||
return [doc for doc, _ in docs_and_scores]
|
||||
|
||||
def similarity_search_with_score(
|
||||
self,
|
||||
query: str,
|
||||
k: int = 4,
|
||||
search_params: Optional[dict] = None,
|
||||
timeout: Optional[int] = None,
|
||||
**kwargs: Any,
|
||||
) -> List[Tuple[Document, float]]:
|
||||
"""Return Dingo documents most similar to query, along with scores.
|
||||
|
||||
Args:
|
||||
query: Text to look up documents similar to.
|
||||
k: Number of Documents to return. Defaults to 4.
|
||||
search_params: Dictionary of argument(s) to filter on metadata
|
||||
|
||||
Returns:
|
||||
List of Documents most similar to the query and score for each
|
||||
"""
|
||||
docs = []
|
||||
query_obj = self._embedding.embed_query(query)
|
||||
results = self._client.vector_search(
|
||||
self._index_name, xq=query_obj, top_k=k, search_params=search_params
|
||||
)
|
||||
|
||||
if not results:
|
||||
return []
|
||||
|
||||
for res in results[0]["vectorWithDistances"]:
|
||||
metadatas = res["scalarData"]
|
||||
id = res["id"]
|
||||
score = res["distance"]
|
||||
text = metadatas[self._text_key]["fields"][0]["data"]
|
||||
|
||||
metadata = {"id": id, "text": text, "score": score}
|
||||
docs.append((Document(page_content=text, metadata=metadata), score))
|
||||
|
||||
return docs
|
||||
|
||||
def max_marginal_relevance_search_by_vector(
|
||||
self,
|
||||
embedding: List[float],
|
||||
k: int = 4,
|
||||
fetch_k: int = 20,
|
||||
lambda_mult: float = 0.5,
|
||||
search_params: Optional[dict] = None,
|
||||
**kwargs: Any,
|
||||
) -> List[Document]:
|
||||
"""Return docs selected using the maximal marginal relevance.
|
||||
|
||||
Maximal marginal relevance optimizes for similarity to query AND diversity
|
||||
among selected documents.
|
||||
|
||||
Args:
|
||||
embedding: Embedding to look up documents similar to.
|
||||
k: Number of Documents to return. Defaults to 4.
|
||||
fetch_k: Number of Documents to fetch to pass to MMR algorithm.
|
||||
lambda_mult: Number between 0 and 1 that determines the degree
|
||||
of diversity among the results with 0 corresponding
|
||||
to maximum diversity and 1 to minimum diversity.
|
||||
Defaults to 0.5.
|
||||
Returns:
|
||||
List of Documents selected by maximal marginal relevance.
|
||||
"""
|
||||
results = self._client.vector_search(
|
||||
self._index_name, [embedding], search_params, k
|
||||
)
|
||||
|
||||
mmr_selected = maximal_marginal_relevance(
|
||||
np.array([embedding], dtype=np.float32),
|
||||
[item["floatValues"] for item in results[0]["vectorWithDistances"]],
|
||||
k=k,
|
||||
lambda_mult=lambda_mult,
|
||||
)
|
||||
selected = [
|
||||
results[0]["vectorWithDistances"][i]["metaData"] for i in mmr_selected
|
||||
]
|
||||
return [
|
||||
Document(page_content=metadata.pop((self._text_key)), metadata=metadata)
|
||||
for metadata in selected
|
||||
]
|
||||
|
||||
def max_marginal_relevance_search(
|
||||
self,
|
||||
query: str,
|
||||
k: int = 4,
|
||||
fetch_k: int = 20,
|
||||
lambda_mult: float = 0.5,
|
||||
search_params: Optional[dict] = None,
|
||||
**kwargs: Any,
|
||||
) -> List[Document]:
|
||||
"""Return docs selected using the maximal marginal relevance.
|
||||
|
||||
Maximal marginal relevance optimizes for similarity to query AND diversity
|
||||
among selected documents.
|
||||
|
||||
Args:
|
||||
query: Text to look up documents similar to.
|
||||
k: Number of Documents to return. Defaults to 4.
|
||||
fetch_k: Number of Documents to fetch to pass to MMR algorithm.
|
||||
lambda_mult: Number between 0 and 1 that determines the degree
|
||||
of diversity among the results with 0 corresponding
|
||||
to maximum diversity and 1 to minimum diversity.
|
||||
Defaults to 0.5.
|
||||
Returns:
|
||||
List of Documents selected by maximal marginal relevance.
|
||||
"""
|
||||
embedding = self._embedding.embed_query(query)
|
||||
return self.max_marginal_relevance_search_by_vector(
|
||||
embedding, k, fetch_k, lambda_mult, search_params
|
||||
)
|
||||
|
||||
@classmethod
|
||||
def from_texts(
|
||||
cls,
|
||||
texts: List[str],
|
||||
embedding: Embeddings,
|
||||
metadatas: Optional[List[dict]] = None,
|
||||
ids: Optional[List[str]] = None,
|
||||
text_key: str = "text",
|
||||
index_name: Optional[str] = None,
|
||||
client: Any = None,
|
||||
host: List[str] = ["172.20.31.10:13000"],
|
||||
user: str = "root",
|
||||
password: str = "123123",
|
||||
batch_size: int = 500,
|
||||
**kwargs: Any,
|
||||
) -> Dingo:
|
||||
"""Construct Dingo wrapper from raw documents.
|
||||
|
||||
This is a user friendly interface that:
|
||||
1. Embeds documents.
|
||||
2. Adds the documents to a provided Dingo index
|
||||
|
||||
This is intended to be a quick way to get started.
|
||||
|
||||
Example:
|
||||
.. code-block:: python
|
||||
|
||||
from langchain import Dingo
|
||||
from langchain.embeddings import OpenAIEmbeddings
|
||||
import dingodb
|
||||
sss
|
||||
embeddings = OpenAIEmbeddings()
|
||||
dingo = Dingo.from_texts(
|
||||
texts,
|
||||
embeddings,
|
||||
index_name="langchain-demo"
|
||||
)
|
||||
"""
|
||||
try:
|
||||
import dingodb
|
||||
except ImportError:
|
||||
raise ImportError(
|
||||
"Could not import dingo python package. "
|
||||
"Please install it with `pip install dingodb`."
|
||||
)
|
||||
|
||||
if client is not None:
|
||||
dingo_client = client
|
||||
else:
|
||||
try:
|
||||
# connect to dingo db
|
||||
dingo_client = dingodb.DingoDB(user, password, host)
|
||||
except ValueError as e:
|
||||
raise ValueError(f"Dingo failed to connect: {e}")
|
||||
if kwargs is not None and kwargs.get("self_id") is True:
|
||||
if index_name not in dingo_client.get_index():
|
||||
dingo_client.create_index(index_name, 1024, auto_id=False)
|
||||
else:
|
||||
if index_name not in dingo_client.get_index():
|
||||
dingo_client.create_index(index_name, 1024)
|
||||
# dingo_client.create_index(index_name, 1024, index_type="hnsw")
|
||||
|
||||
# Embed and create the documents
|
||||
|
||||
ids = ids or [str(uuid.uuid1().int)[:13] for _ in texts]
|
||||
metadatas_list = []
|
||||
texts = list(texts)
|
||||
embeds = embedding.embed_documents(texts)
|
||||
for i, text in enumerate(texts):
|
||||
metadata = metadatas[i] if metadatas else {}
|
||||
metadata[text_key] = text
|
||||
metadatas_list.append(metadata)
|
||||
|
||||
# upsert to Dingo
|
||||
for i in range(0, len(list(texts)), batch_size):
|
||||
j = i + batch_size
|
||||
dingo_client.vector_add(
|
||||
index_name, metadatas_list[i:j], embeds[i:j], ids[i:j]
|
||||
)
|
||||
return cls(embedding, text_key, client=dingo_client, index_name=index_name)
|
||||
|
||||
def delete(
|
||||
self,
|
||||
ids: Optional[List[str]] = None,
|
||||
**kwargs: Any,
|
||||
) -> Any:
|
||||
"""Delete by vector IDs or filter.
|
||||
Args:
|
||||
ids: List of ids to delete.
|
||||
"""
|
||||
|
||||
if ids is None:
|
||||
raise ValueError("No ids provided to delete.")
|
||||
|
||||
return self._client.vector_delete(self._index_name, ids=ids)
|
||||
Loading…
Reference in New Issue
Block a user