org.nd4j.evaluation.curves.Histogram Maven / Gradle / Ivy
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/*
* ******************************************************************************
* *
* *
* * This program and the accompanying materials are made available under the
* * terms of the Apache License, Version 2.0 which is available at
* * https://www.apache.org/licenses/LICENSE-2.0.
* *
* * See the NOTICE file distributed with this work for additional
* * information regarding copyright ownership.
* * Unless required by applicable law or agreed to in writing, software
* * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* * License for the specific language governing permissions and limitations
* * under the License.
* *
* * SPDX-License-Identifier: Apache-2.0
* *****************************************************************************
*/
package org.nd4j.evaluation.curves;
import lombok.Data;
import org.nd4j.shade.jackson.annotation.JsonProperty;
@Data
public class Histogram extends BaseHistogram {
private final String title;
private final double lower;
private final double upper;
private final int[] binCounts;
public Histogram(@JsonProperty("title") String title, @JsonProperty("lower") double lower,
@JsonProperty("upper") double upper, @JsonProperty("binCounts") int[] binCounts) {
this.title = title;
this.lower = lower;
this.upper = upper;
this.binCounts = binCounts;
}
@Override
public int numPoints() {
return binCounts.length;
}
@Override
public double[] getBinLowerBounds() {
double step = 1.0 / binCounts.length;
double[] out = new double[binCounts.length];
for (int i = 0; i < out.length; i++) {
out[i] = i * step;
}
return out;
}
@Override
public double[] getBinUpperBounds() {
double step = 1.0 / binCounts.length;
double[] out = new double[binCounts.length];
for (int i = 0; i < out.length - 1; i++) {
out[i] = (i + 1) * step;
}
out[out.length - 1] = 1.0;
return out;
}
@Override
public double[] getBinMidValues() {
double step = 1.0 / binCounts.length;
double[] out = new double[binCounts.length];
for (int i = 0; i < out.length; i++) {
out[i] = (i + 0.5) * step;
}
return out;
}
/**
* @param json JSON representation
* @return Instance of the histogram
*/
public static Histogram fromJson(String json) {
return BaseHistogram.fromJson(json, Histogram.class);
}
/**
*
* @param yaml YAML representation
* @return Instance of the histogram
*/
public static Histogram fromYaml(String yaml) {
return BaseHistogram.fromYaml(yaml, Histogram.class);
}
}