归一化算法-最大最小值算法

package com.rongyi.platform.game.web.data;

import java.util.ArrayList;
import java.util.List;

public class MinMaxScaler {
    private double min;
    private double max;

    private List<Double> data;

    public MinMaxScaler(List<Double> data) {
        this.min = Double.POSITIVE_INFINITY;
        this.max = Double.NEGATIVE_INFINITY;
        this.data = data;

        for (double datum : data) {
            this.min = Math.min(this.min, datum);
            this.max = Math.max(this.max, datum);
        }
    }

    public List<Double> scale() {
        List<Double> scaledData = new ArrayList<>();
        for (int i = 0; i < data.size(); i++) {
            if (max == min) {
                scaledData.add(0.0);
            } else {
                scaledData.add((data.get(i) - min) / (max - min));
            }
        }
        return scaledData;
    }
}