Struct KnowledgeIndex 

pub struct KnowledgeIndex { /* private fields */ }

In-memory, term-indexed knowledge base built from ingested documents.

Retrieval is based on IDF-weighted token overlap: content words that appear rarely across the corpus are weighted more heavily, focusing results on discriminative evidence.

Examples

use lmm_agent::cognition::knowledge::KnowledgeIndex;

let mut idx = KnowledgeIndex::new();
idx.ingest_text(
    "rust-book",
    "Rust prevents data races at compile time through its ownership model.",
);
let hits = idx.query("What prevents data races in Rust?", 3);
assert!(!hits.is_empty());

Implementations

impl KnowledgeIndex

pub fn new() -> Self

Creates an empty KnowledgeIndex.

pub fn is_empty(&self) -> bool

Returns true if no documents have been ingested yet.

pub fn len(&self) -> usize

Returns the total number of indexed chunks.

pub fn ingest_text(&mut self, source: &str, text: &str) -> usize

Ingests a raw text string under the given source label.

The text is split into sentence-level chunks via a lightweight sentence splitter before being indexed. Returns the number of chunks created.

pub fn query(&self, question: &str, top_k: usize) -> Vec<&DocumentChunk>

Returns the top_k most relevant DocumentChunks for question.

Chunks are scored by the sum of IDF weights for each question token that appears in the chunk.

pub fn answer(&self, question: &str, top_k: usize) -> Option<String>

Returns an extractive answer to question from the knowledge base, or None if no relevant chunks are found.

The top-top_k chunks are concatenated and passed to lmm::text::TextSummarizer with the original question as a relevance hint. The summariser selects the sentences most likely to answer the question.

Trait Implementations

impl Clone for KnowledgeIndex

fn clone(&self) -> KnowledgeIndex

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for KnowledgeIndex

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for KnowledgeIndex

fn default() -> KnowledgeIndex

Returns the “default value” for a type.