Oja

models.Synapses.Oja(self, eta=0.01, alpha=1.0)

Rate-coded synapse with regularized Hebbian plasticity (Oja).

Parameters (global):

• eta = 0.01 : learning rate.

• alpha = 1.0 : regularization constant.

Learning rule:

• w : weight:

dw/dt = eta * ( pre.r * post.r - alpha * post.r^2 * w )

Equivalent code:

Oja = ann.Synapse(
    parameters = """
        eta = 0.01 : projection
        alpha = 1.0 : projection
    """,
    equations = """
        dw/dt = eta * ( pre.r * post.r - alpha * post.r^2 * w ) : min=0.0
    """
)