Struct HeuristicIntentClassifier 

pub struct HeuristicIntentClassifier {
    pub max_shallow_query_chars: usize,
    pub max_shallow_question_marks: usize,
    pub max_shallow_depth: u32,
    pub comparative_markers: Vec<String>,
}

Deterministic, LLM-free intent classifier.

Classifies a request as ResearchTier::Shallow when all of the following hold; otherwise it routes to ResearchTier::Deep:

1. req.query.chars().count() is strictly less than HeuristicIntentClassifier::max_shallow_query_chars.
2. The query contains zero or one ? characters (multiple sub- questions imply deep).
3. req.depth is <= HeuristicIntentClassifier::max_shallow_depth.
4. The query contains none of the configured comparative markers (case-insensitive substring match).

All thresholds are tunable via the with_* builder methods.

Fields

max_shallow_query_chars: usize

Strict upper bound on chars().count() of a shallow query.

max_shallow_question_marks: usize

Maximum allowed ? count in a shallow query.

max_shallow_depth: u32

Maximum allowed req.depth for a shallow query.

comparative_markers: Vec<String>

Case-insensitive substrings whose presence forces the request to the deep tier.

Implementations

impl HeuristicIntentClassifier

pub fn new() -> Self

Build a heuristic classifier with the documented defaults.

pub fn with_max_shallow_query_chars(self, n: usize) -> Self

Override the strict character-count upper bound.

pub fn with_max_shallow_question_marks(self, n: usize) -> Self

Override the maximum allowed ? count for shallow queries.

pub fn with_max_shallow_depth(self, n: u32) -> Self

Override the maximum allowed req.depth for shallow queries.

pub fn with_comparative_markers<I, S>(self, markers: I) -> Self

where I: IntoIterator<Item = S>, S: Into<String>,

Replace the comparative-marker list outright.

pub fn classify_sync(&self, req: &ResearchRequest) -> ResearchTier

Pure synchronous classifier used by the async trait method. Public so callers and tests can exercise it without await.

Trait Implementations

impl Clone for HeuristicIntentClassifier

fn clone(&self) -> HeuristicIntentClassifier

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HeuristicIntentClassifier

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

Formats the value using the given formatter.

impl Default for HeuristicIntentClassifier

fn default() -> Self

Returns the “default value” for a type.

impl IntentClassifier for HeuristicIntentClassifier

fn classify<'life0, 'life1, 'async_trait>( &'life0 self, req: &'life1 ResearchRequest, ) -> Pin<Box<dyn Future<Output = Result<ResearchTier>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

Decide which tier should handle req.