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 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.commons.math3.ml.neuralnet.sofm;

Provides the learning rate as a function of the number of calls
already performed during the learning task.
Since:
3.3/**
 * Provides the learning rate as a function of the number of calls
 * already performed during the learning task.
 *
 * @since 3.3
 */
public interface LearningFactorFunction {
    
Computes the learning rate at the current call.
Params:
numCall – Current step of the training task.
Returns:
the value of the function at numCall./**
     * Computes the learning rate at the current call.
     *
     * @param numCall Current step of the training task.
     * @return the value of the function at {@code numCall}.
     */
    double value(long numCall);
}