Struct ConfigLexiconScorer 

pub struct ConfigLexiconScorer { /* private fields */ }

LexiconScorer backed by a TOML config file.

Matching

Pattern matching is case-insensitive substring with two normalizations applied before comparison:

• Apostrophes are stripped from both content and pattern, so "that's right" matches "thats right" and vice versa.
• A 3-token negation window suppresses matches preceded within three whitespace-separated tokens by a negator (not, never, don't, didn't, no, isn't, can't, cannot, won't, hardly, barely). This prevents "not confirmed" from firing the "confirmed" affirmation.

Limitations

This is a lexical heuristic, not a language model. It does not perform syntactic parsing, sarcasm detection, discourse analysis, or full semantic interpretation. Known blind spots:

• Deep negation stacking ("I don't think this is not confirmed")
• Pragmatic ambiguity ("noted" as genuine vs. cold acknowledgment)
• Cross-sentence negation scope (the window is local to each pattern site)

The semantic search layer (embeddings) complements this scorer but does not replace it — embeddings handle vocabulary-agnostic retrieval; this scorer handles explicit memory-intent signals (commitments, decisions, corrections) that are not the same problem as semantic similarity.

Implementations

impl ConfigLexiconScorer

pub fn from_file(path: &Path) -> Result<Self>

Load a scorer from a TOML file on disk.

Errors

Returns an error if the file cannot be read or the TOML is invalid.

Trait Implementations

impl Clone for ConfigLexiconScorer

fn clone(&self) -> ConfigLexiconScorer

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ConfigLexiconScorer

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

Formats the value using the given formatter.

impl FromStr for ConfigLexiconScorer

fn from_str(s: &str) -> Result<Self>

Parse a scorer from a TOML string. Also available as str::parse::<ConfigLexiconScorer>().

Errors

Returns an error if the TOML is malformed or doesn’t match the LexiconConfig schema.

type Err = Error

The associated error which can be returned from parsing.

impl LexiconScorer for ConfigLexiconScorer

fn score(&self, entry: &ContextEntry, _query: &str) -> f32

Score a single entry given the current query string.