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fann_set_rprop_delta_min	fann_set_rprop_increase_factor

Fann Functions	Last updated: Mon, 26 Oct 2026

fann_set_rprop_delta_zero

(PECL fann >= 1.0.0)

fann_set_rprop_delta_zero — Sets the initial step-size

Description

function fann_set_rprop_delta_zero(resource $ann, float $rprop_delta_zero): bool

The initial step-size is a positive number determining the initial step size.

Parameters

ann: Neural network resource.
rprop_delta_zero: The initial step-size.

Return Values

Returns true on success, or false otherwise.

See Also

fann_get_rprop_delta_zero() - Returns the initial step-size
fann_get_rprop_delta_min() - Returns the minimum step-size
fann_get_rprop_delta_max() - Returns the maximum step-size

fann_set_rprop_delta_min	fann_set_rprop_increase_factor

Fann Functions	Last updated: Mon, 26 Oct 2026