Enum RetrievalHeadRole 

#[repr(u8)]
pub enum RetrievalHeadRole {
    Local = 0,
    Retrieval = 1,
}

Head role classification for RTPurbo sparse decode.

Only ~15% of attention heads (“retrieval heads”) need full long-context access. The remaining ~85% (“local heads”) attend only to local context + attention sinks.

Variants

Local = 0

Local head — sliding window + sink tokens only, no full KV scan.

Retrieval = 1

Retrieval head — low-dim projection + dynamic top-p token selection.

Trait Implementations

impl Clone for RetrievalHeadRole

fn clone(&self) -> RetrievalHeadRole

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for RetrievalHeadRole

impl Debug for RetrievalHeadRole

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

Formats the value using the given formatter.

impl Default for RetrievalHeadRole

fn default() -> RetrievalHeadRole

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for RetrievalHeadRole

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for RetrievalHeadRole

impl PartialEq for RetrievalHeadRole

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for RetrievalHeadRole

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 RetrievalHeadRole