Struct FiveSignalConfig 

pub struct FiveSignalConfig {
    pub enabled: bool,
    pub w_recency: f64,
    pub w_relevance: f64,
    pub w_frequency: f64,
    pub w_causal: f64,
    pub w_novelty: f64,
    pub causal_bfs_max_depth: u32,
    pub neutral_causal_distance: u32,
    pub novelty_decay_rate: f64,
    pub consolidation_daemon: FiveSignalConsolidationConfig,
}

Five-signal SYNAPSE retrieval configuration (issue #4374).

Extends SYNAPSE recall with three additional signals — access frequency, causal distance, and novelty — beyond the two-signal baseline (recency + relevance). All new signal weights default to 0.0, preserving exact backward compatibility.

Example (TOML)

[memory.five_signal]
enabled = true
w_recency   = 0.35
w_relevance = 0.35
w_frequency = 0.15
w_causal    = 0.10
w_novelty   = 0.05

[memory.five_signal.consolidation_daemon]
enabled = true
interval_seconds = 7200

Fields

enabled: bool

Master switch. When false, the five-signal code path contributes zero overhead.

w_recency: f64

Weight for the recency signal. Default: 0.35.

w_relevance: f64

Weight for the semantic relevance signal. Default: 0.35.

w_frequency: f64

Weight for the access frequency signal. Default: 0.0 (baseline-compatible).

w_causal: f64

Weight for the causal distance signal. Default: 0.0 (baseline-compatible).

w_novelty: f64

Weight for the novelty signal. Default: 0.0 (baseline-compatible).

causal_bfs_max_depth: u32

Maximum BFS depth for causal distance computation. Default: 10.

neutral_causal_distance: u32

Causal distance assigned when no goal entity is set or a fact lies beyond causal_bfs_max_depth. Default: 5.

novelty_decay_rate: f64

Decay rate λ in exp(-λ × days) for the novelty signal. Default: 0.1.

consolidation_daemon: FiveSignalConsolidationConfig

Async consolidation daemon that promotes hot episodic facts to Qdrant.

Trait Implementations

impl Clone for FiveSignalConfig

fn clone(&self) -> FiveSignalConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FiveSignalConfig

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

Formats the value using the given formatter.

impl Default for FiveSignalConfig

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for FiveSignalConfig

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for FiveSignalConfig

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

where __S: Serializer,

Serialize this value into the given Serde serializer.