Enum RetrievalMode 

pub enum RetrievalMode {
    Vector,
    Bm25,
    Hybrid,
    MultiQuery,
    Hyde,
}

The retrieval strategy to run for a query.

Variants

Vector

Dense vector (semantic) search only.

Bm25

Sparse keyword search only (Okapi BM25).

Hybrid

Vector + BM25, fused with Reciprocal Rank Fusion.

MultiQuery

LLM rewrites the query into N variants; results are fused (RRF).

Hyde

LLM writes a hypothetical answer; its embedding drives vector search.

Implementations

impl RetrievalMode

pub const ALL: [RetrievalMode; 5]

All modes, for the evaluation matrix.

pub const OFFLINE: [RetrievalMode; 3]

Modes that run without any network LLM — used by offline eval.

pub fn needs_llm(self) -> bool

Whether this mode needs a crate::llm::ChatModel to run.

Trait Implementations

impl Clone for RetrievalMode

fn clone(&self) -> RetrievalMode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for RetrievalMode

impl Debug for RetrievalMode

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for RetrievalMode

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for RetrievalMode

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

Formats the value using the given formatter.

impl Eq for RetrievalMode

impl FromStr for RetrievalMode

type Err = RagError

The associated error which can be returned from parsing.

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

Parses a string s to return a value of this type.

impl PartialEq for RetrievalMode

fn eq(&self, other: &RetrievalMode) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for RetrievalMode

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for RetrievalMode