chore: import upstream snapshot with attribution
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This commit is contained in:
wehub-resource-sync
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{
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"cells": [
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{
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"attachments": {},
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"cell_type": "markdown",
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"id": "b1c1ebaa-50de-4851-a720-acbb977551ea",
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"metadata": {},
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"source": [
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"# Recency Filtering\n",
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"\n",
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"Showcase capabilities of recency-weighted node postprocessor"
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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": "89a402a6",
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"metadata": {},
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"outputs": [],
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"source": [
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"import os\n",
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"\n",
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"os.environ[\"OPENAI_API_KEY\"] = \"sk-...\""
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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": "92d06b38-2103-4a40-93c3-60e0708a1124",
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"metadata": {},
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"outputs": [],
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"source": [
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"from llama_index.core import VectorStoreIndex, SimpleDirectoryReader\n",
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"from llama_index.core.postprocessor import (\n",
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" FixedRecencyPostprocessor,\n",
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" EmbeddingRecencyPostprocessor,\n",
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")\n",
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"from llama_index.core.node_parser import SentenceSplitter\n",
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"from llama_index.core.storage.docstore import SimpleDocumentStore\n",
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"from llama_index.core.response.notebook_utils import display_response"
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]
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},
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{
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"cell_type": "markdown",
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"id": "67020156-2975-4bbb-8e98-afc55abb3d72",
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"metadata": {},
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"source": [
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"### Parse Documents into Nodes, add to Docstore\n",
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"\n",
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"In this example, there are 3 different versions of PG's essay. They are largely identical **except** \n",
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"for one specific section, which details the amount of funding they raised for Viaweb. \n",
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"\n",
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"V1: 50k, V2: 30k, V3: 10K\n",
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"\n",
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"V1: 2020-01-01, V2: 2020-02-03, V3: 2022-04-12\n",
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"\n",
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"The idea is to encourage index to fetch the most recent info (which is V3)"
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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": "caddd84e-9827-40a4-9520-dba6405fd1fd",
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"metadata": {},
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"outputs": [],
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"source": [
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"# load documents\n",
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"from llama_index.core import StorageContext\n",
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"\n",
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"\n",
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"def get_file_metadata(file_name: str):\n",
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" \"\"\"Get file metadata.\"\"\"\n",
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" if \"v1\" in file_name:\n",
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" return {\"date\": \"2020-01-01\"}\n",
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" elif \"v2\" in file_name:\n",
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" return {\"date\": \"2020-02-03\"}\n",
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" elif \"v3\" in file_name:\n",
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" return {\"date\": \"2022-04-12\"}\n",
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" else:\n",
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" raise ValueError(\"invalid file\")\n",
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"\n",
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"\n",
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"documents = SimpleDirectoryReader(\n",
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" input_files=[\n",
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" \"test_versioned_data/paul_graham_essay_v1.txt\",\n",
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" \"test_versioned_data/paul_graham_essay_v2.txt\",\n",
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" \"test_versioned_data/paul_graham_essay_v3.txt\",\n",
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" ],\n",
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" file_metadata=get_file_metadata,\n",
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").load_data()\n",
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"\n",
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"# define settings\n",
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"from llama_index.core import Settings\n",
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"\n",
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"Settings.text_splitter = SentenceSplitter(chunk_size=512)\n",
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"\n",
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"# use node parser to parse into nodes\n",
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"nodes = Settings.text_splitter.get_nodes_from_documents(documents)\n",
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"\n",
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"# add to docstore\n",
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"docstore = SimpleDocumentStore()\n",
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"docstore.add_documents(nodes)\n",
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"\n",
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"storage_context = StorageContext.from_defaults(docstore=docstore)"
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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": "191ced40-80f4-40e7-bf31-0c9a5a664cf2",
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"metadata": {},
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"outputs": [],
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"source": [
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"print(documents[2].get_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": "e5a25b95-de5e-4e56-a846-51e9c6eba181",
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"metadata": {},
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"source": [
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"### Build Index"
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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": "5f7f68d6-2389-4f6c-bc4e-8612a1a53fb8",
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"metadata": {},
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"outputs": [
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{
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"name": "stderr",
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"output_type": "stream",
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"text": [
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"INFO:llama_index.token_counter.token_counter:> [build_index_from_nodes] Total LLM token usage: 0 tokens\n",
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"INFO:llama_index.token_counter.token_counter:> [build_index_from_nodes] Total embedding token usage: 84471 tokens\n"
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]
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}
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],
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"source": [
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"# build index\n",
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"index = VectorStoreIndex(nodes, storage_context=storage_context)"
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]
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},
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{
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"cell_type": "markdown",
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"id": "86c5e8aa-18d8-4229-b7b2-a1c97c11a09a",
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"metadata": {},
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"source": [
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"### Define Recency Postprocessors"
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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": "ba5e10c9-5a7e-4ea8-a74d-0e0f74b5cd1b",
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"metadata": {},
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"outputs": [],
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"source": [
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"node_postprocessor = FixedRecencyPostprocessor()"
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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": "94f44f2b-d816-43a0-87dc-ea8eefc7d534",
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"metadata": {},
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"outputs": [],
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"source": [
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"node_postprocessor_emb = EmbeddingRecencyPostprocessor()"
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]
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},
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{
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"cell_type": "markdown",
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"id": "efcfffe4-a8aa-486d-b46d-f73f985dffca",
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"metadata": {},
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"source": [
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"### Query Index"
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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": "78d6c3db-61e6-4d9a-a84d-d7be846b4112",
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"metadata": {},
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"outputs": [
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{
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"name": "stderr",
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"output_type": "stream",
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"text": [
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"INFO:llama_index.token_counter.token_counter:> [query] Total LLM token usage: 1813 tokens\n",
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"INFO:llama_index.token_counter.token_counter:> [query] Total embedding token usage: 22 tokens\n"
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]
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}
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],
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"source": [
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"# naive query\n",
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"\n",
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"query_engine = index.as_query_engine(\n",
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" similarity_top_k=3,\n",
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")\n",
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"response = query_engine.query(\n",
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" \"How much did the author raise in seed funding from Idelle's husband\"\n",
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" \" (Julian) for Viaweb?\",\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": null,
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"id": "1d672c52-c0ac-4e5f-9175-855e66eb97ba",
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"metadata": {},
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"outputs": [],
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"source": [
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"# query using fixed recency node postprocessor\n",
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"\n",
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"query_engine = index.as_query_engine(\n",
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" similarity_top_k=3, node_postprocessors=[node_postprocessor]\n",
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")\n",
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"response = query_engine.query(\n",
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" \"How much did the author raise in seed funding from Idelle's husband\"\n",
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" \" (Julian) for Viaweb?\",\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": null,
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"id": "bc1328c1-23b2-406c-b80b-6d97bffc33ae",
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"metadata": {},
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"outputs": [
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{
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"name": "stderr",
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"output_type": "stream",
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"text": [
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"INFO:llama_index.token_counter.token_counter:> [query] Total LLM token usage: 541 tokens\n",
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"INFO:llama_index.token_counter.token_counter:> [query] Total embedding token usage: 22 tokens\n"
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]
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}
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],
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"source": [
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"# query using embedding-based node postprocessor\n",
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"\n",
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"query_engine = index.as_query_engine(\n",
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" similarity_top_k=3, node_postprocessors=[node_postprocessor_emb]\n",
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")\n",
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"response = query_engine.query(\n",
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" \"How much did the author raise in seed funding from Idelle's husband\"\n",
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" \" (Julian) for Viaweb?\",\n",
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")"
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]
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},
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{
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"cell_type": "markdown",
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"id": "dd00cc97-4de7-4c61-9c0c-3f9ee3598528",
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"metadata": {},
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"source": [
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"### Query Index (Lower-Level Usage)\n",
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"\n",
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"In this example we first get the full set of nodes from a query call, and then send to node postprocessor, and then\n",
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"finally synthesize response through a summary index."
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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": "350b039e-d45d-4b6b-957a-4b14d8816cbd",
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"metadata": {},
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"outputs": [],
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"source": [
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"from llama_index.core import SummaryIndex"
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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": "234f909f-6faa-43e6-96f8-0966699c9552",
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"metadata": {},
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"outputs": [],
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"source": [
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"query_str = (\n",
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" \"How much did the author raise in seed funding from Idelle's husband\"\n",
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" \" (Julian) for Viaweb?\"\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": null,
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"id": "20afbf6b-9473-446e-b522-b90fef2e3bf0",
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"metadata": {},
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"outputs": [
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{
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"name": "stderr",
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"output_type": "stream",
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"text": [
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"INFO:llama_index.token_counter.token_counter:> [query] Total LLM token usage: 0 tokens\n",
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"INFO:llama_index.token_counter.token_counter:> [query] Total embedding token usage: 22 tokens\n"
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]
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}
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],
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"source": [
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"query_engine = index.as_query_engine(\n",
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" similarity_top_k=3, response_mode=\"no_text\"\n",
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")\n",
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"init_response = query_engine.query(\n",
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" query_str,\n",
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")\n",
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"resp_nodes = [n.node for n in init_response.source_nodes]"
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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": "cdc03574-a806-4255-953c-6f82fc3f202f",
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"metadata": {},
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"outputs": [
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{
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"name": "stderr",
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"output_type": "stream",
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"text": [
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"INFO:llama_index.token_counter.token_counter:> [build_index_from_nodes] Total LLM token usage: 0 tokens\n",
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"INFO:llama_index.token_counter.token_counter:> [build_index_from_nodes] Total embedding token usage: 0 tokens\n",
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"INFO:llama_index.token_counter.token_counter:> [query] Total LLM token usage: 541 tokens\n",
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"INFO:llama_index.token_counter.token_counter:> [query] Total embedding token usage: 0 tokens\n"
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]
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}
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],
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"source": [
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"summary_index = SummaryIndex(resp_nodes)\n",
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"query_engine = summary_index.as_query_engine(\n",
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" node_postprocessors=[node_postprocessor]\n",
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")\n",
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"response = query_engine.query(query_str)"
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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": ".venv",
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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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}
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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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