如何找到长度相同的2个浮点数之间的相似度百分比？

Question

我有2个带有8个浮点变量的向量。

每个向量都有不同的值。

比较这两个向量并返回相似性的总体百分比的有效方法是什么？ （例如~80％）

float[] emotion1 = {0.050, 0.200, 0.025, 0.225, 0.075, 0.175, 0.0125, 0.2375}; //sum = 1.00
float[] emotion2 = {0.10, 0.150, 0.175, 0.075, 0.225, 0.025, 0.0125, 0.2375}; //sum = 1.00

Answer 1

    double[] emotion1 = {0.05, 0.2, 0.025, 0.225, 0.075, 0.175, 0.0125, 0.2375}; // sum = 1,0
    double[] emotion2 = {0.1, 0.15, 0.125, 0.125, 0.175, 0.075, 0.1125, 0.1375};

    Set<Double> floatSet = new HashSet<>();
    for (double value : emotion1) {
      floatSet.add(value);
    }

    for (double value : emotion2) {
      floatSet.add(value);
    }

    int arraysLength = emotion1.length + emotion2.length;
    int totalElementsNumber = floatSet.size();
    double percentage = 100 - ((totalElementsNumber * 100) / arraysLength);
    System.out.println("similarity: " + percentage + " %");