{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# MosaicML\n",
    "\n",
    ">[MosaicML](https://docs.mosaicml.com/en/latest/inference.html) offers a managed inference service. You can either use a variety of open source models, or deploy your own.\n",
    "\n",
    "This example goes over how to use LangChain to interact with `MosaicML` Inference for text embedding."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "# sign up for an account: https://forms.mosaicml.com/demo?utm_source=langchain\n",
    "\n",
    "from getpass import getpass\n",
    "\n",
    "MOSAICML_API_TOKEN = getpass()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "import os\n",
    "\n",
    "os.environ[\"MOSAICML_API_TOKEN\"] = MOSAICML_API_TOKEN"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "from langchain.embeddings import MosaicMLInstructorEmbeddings"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "embeddings = MosaicMLInstructorEmbeddings(\n",
    "    query_instruction=\"Represent the query for retrieval: \"\n",
    ")"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "query_text = \"This is a test query.\"\n",
    "query_result = embeddings.embed_query(query_text)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "document_text = \"This is a test document.\"\n",
    "document_result = embeddings.embed_documents([document_text])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "import numpy as np\n",
    "\n",
    "query_numpy = np.array(query_result)\n",
    "document_numpy = np.array(document_result[0])\n",
    "similarity = np.dot(query_numpy, document_numpy) / (\n",
    "    np.linalg.norm(query_numpy) * np.linalg.norm(document_numpy)\n",
    ")\n",
    "print(f\"Cosine similarity between document and query: {similarity}\")"
   ]
  }
 ],
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