56 lines
2.0 KiB
Java
56 lines
2.0 KiB
Java
/*
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* ******************************************************************************
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* *
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* *
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* * This program and the accompanying materials are made available under the
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* * terms of the Apache License, Version 2.0 which is available at
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* * https://www.apache.org/licenses/LICENSE-2.0.
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* *
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* * See the NOTICE file distributed with this work for additional
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* * information regarding copyright ownership.
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* * Unless required by applicable law or agreed to in writing, software
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* * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* * License for the specific language governing permissions and limitations
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* * under the License.
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* *
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* * SPDX-License-Identifier: Apache-2.0
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* *****************************************************************************
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*/
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package org.nd4j.linalg.schedule;
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import lombok.Data;
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import com.fasterxml.jackson.annotation.JsonProperty;
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@Data
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public class StepSchedule implements ISchedule {
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private final ScheduleType scheduleType;
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private final double initialValue;
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private final double decayRate;
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private final double step;
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public StepSchedule(@JsonProperty("scheduleType") ScheduleType scheduleType,
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@JsonProperty("initialValue") double initialValue,
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@JsonProperty("decayRate") double decayRate,
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@JsonProperty("step") double step){
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this.scheduleType = scheduleType;
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this.initialValue = initialValue;
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this.decayRate = decayRate;
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this.step = step;
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}
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@Override
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public double valueAt(int iteration, int epoch) {
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int i = (scheduleType == ScheduleType.ITERATION ? iteration : epoch);
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return initialValue * Math.pow(decayRate, Math.floor(i / step));
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}
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@Override
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public ISchedule clone() {
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return new StepSchedule(scheduleType, initialValue, decayRate, step);
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}
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}
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