Upstash 向量存储

! pip install -q llama-index upstash-vector

from llama_index.core import VectorStoreIndex, SimpleDirectoryReader
from llama_index.core.vector_stores import UpstashVectorStore
from llama_index.core import StorageContext
import textwrap
import openai

# Setup the OpenAI API
openai.api_key = "sk-..."

# Download data
! mkdir -p 'data/paul_graham/'
! wget 'https://raw.githubusercontent.com/run-llama/llama_index/main/docs/examples/data/paul_graham/paul_graham_essay.txt' -O 'data/paul_graham/paul_graham_essay.txt'

--2024-02-03 20:04:25--  https://raw.githubusercontent.com/run-llama/llama_index/main/docs/examples/data/paul_graham/paul_graham_essay.txt
Resolving raw.githubusercontent.com (raw.githubusercontent.com)... 185.199.108.133, 185.199.109.133, 185.199.110.133, ...
Connecting to raw.githubusercontent.com (raw.githubusercontent.com)|185.199.108.133|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 75042 (73K) [text/plain]
Saving to: ‘data/paul_graham/paul_graham_essay.txt’

data/paul_graham/pa 100%[===================>]  73.28K  --.-KB/s    in 0.01s

2024-02-03 20:04:25 (5.96 MB/s) - ‘data/paul_graham/paul_graham_essay.txt’ saved [75042/75042]

documents = SimpleDirectoryReader("./data/paul_graham/").load_data()

print("# Documents:", len(documents))

# Documents: 1

vector_store = UpstashVectorStore(url="https://...", token="...")

storage_context = StorageContext.from_defaults(vector_store=vector_store)
index = VectorStoreIndex.from_documents(
    documents, storage_context=storage_context
)

query_engine = index.as_query_engine()
res1 = query_engine.query("What did the author learn?")
print(textwrap.fill(str(res1), 100))

print("\n")

res2 = query_engine.query("What is the author's opinion on startups?")
print(textwrap.fill(str(res2), 100))

The author learned that the study of philosophy in college did not live up to their expectations.
They found that other fields took up most of the space of ideas, leaving little room for what they
perceived as the ultimate truths that philosophy was supposed to explore. As a result, they decided
to switch to studying AI.


The author's opinion on startups is that they are in need of help and support, especially in the
beginning stages. The author believes that founders of startups are often helpless and face various
challenges, such as getting incorporated and understanding the intricacies of running a company. The
author's investment firm, Y Combinator, aims to provide seed funding and comprehensive support to
startups, offering them the guidance and resources they need to succeed.

import os

from llama_index.vector_stores.upstash import UpstashVectorStore
from llama_index.core.vector_stores.types import (
    MetadataFilter,
    MetadataFilters,
    FilterOperator,
)

vector_store = UpstashVectorStore(
    url=os.environ.get("UPSTASH_VECTOR_URL") or "",
    token=os.environ.get("UPSTASH_VECTOR_TOKEN") or "",
)

index = VectorStoreIndex.from_vector_store(vector_store=vector_store)

filters = MetadataFilters(
    filters=[
        MetadataFilter(
            key="author", value="Marie Curie", operator=FilterOperator.EQ
        )
    ],
)

retriever = index.as_retriever(filters=filters)

retriever.retrieve("What is inception about?")

from llama_index.core.vector_stores import FilterOperator, FilterCondition

filters = MetadataFilters(
    filters=[
        MetadataFilter(
            key="theme",
            value=["Fiction", "Horror"],
            operator=FilterOperator.IN,
        ),
        MetadataFilter(key="year", value=1997, operator=FilterOperator.GT),
    ],
    condition=FilterCondition.AND,
)

retriever = index.as_retriever(filters=filters)
retriever.retrieve("Harry Potter?")