predictProba method
Predict probability for a single example.
Implementation
double predictProba(List<double> features) {
if (_weights == null) throw StateError('Model not fitted');
var z = _weights![0];
for (var i = 0; i < features.length && i + 1 < _weights!.length; i++) {
z += _weights![i + 1] * features[i];
}
return _sigmoid(z);
}