The TextKnowledgeBase reads local txt files, converts them into vector embeddings and loads them to a vector databse.

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Usage

We are using a local PgVector database for this example. Make sure it’s running

knowledge_base.py
from phi.knowledge.text import TextKnowledgeBase
from phi.vectordb.pgvector import PgVector

knowledge_base = TextKnowledgeBase(
    path="data/txt_files",
    # Table name: ai.text_documents
    vector_db=PgVector(
        table_name="text_documents",
        db_url="postgresql+psycopg://ai:ai@localhost:5532/ai",
    ),
)

Then use the knowledge_base with an Agent:

agent.py
from phi.agent import Agent
from knowledge_base import knowledge_base

agent = Agent(
    knowledge_base=knowledge_base,
    search_knowledge=True,
)
agent.knowledge.load(recreate=False)

agent.print_response("Ask me about something from the knowledge base")

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Params

ParameterTypeDefaultDescription
pathUnion[str, Path]-Path to text files. Can point to a single txt file or a directory of txt files.
formatsList[str][".txt"]Formats accepted by this knowledge base.
readerTextReaderTextReader()A TextReader that converts the text files into Documents for the vector database.
vector_dbVectorDb-Vector Database for the Knowledge Base.
num_documentsint5Number of documents to return on search.
optimize_onint-Number of documents to optimize the vector db on.
chunking_strategyChunkingStrategyFixedSizeChunkingThe chunking strategy to use.

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