Struct BCM 

pub struct BCM {
    pub learning_rate: f64,
    pub threshold: f64,
    pub tau_threshold: f64,
    pub w_min: f64,
    pub w_max: f64,
    /* private fields */
}

BCM (Bienenstock-Cooper-Munro) plasticity rule.

BCM theory proposes that synaptic modification depends on postsynaptic activity relative to a sliding threshold.

Δw = η * x * (y - θ) * y where x = presynaptic activity, y = postsynaptic activity, θ = threshold

Fields

learning_rate: f64

Learning rate.

threshold: f64

Modification threshold.

tau_threshold: f64

Time constant for threshold adaptation (ms).

w_min: f64

Minimum weight.

w_max: f64

Maximum weight.

Implementations

impl BCM

pub fn new() -> Self

Create new BCM with default parameters.

pub fn update( &mut self, pre_activity: f64, post_activity: f64, current_weight: f64, dt: f64, ) -> f64

Update synaptic weight using BCM rule.

Arguments

• pre_activity - Presynaptic activity (firing rate or activation)
• post_activity - Postsynaptic activity
• current_weight - Current synaptic weight
• dt - Time step (ms)

pub fn reset(&mut self)

Reset BCM state.

Trait Implementations

impl Clone for BCM

fn clone(&self) -> BCM

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BCM

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

Formats the value using the given formatter.

impl Default for BCM

fn default() -> Self

Returns the “default value” for a type.