java - 如何提取下面的数据并显示在另一个文件中

Question

L=40
i:Classifier_name=meka.classifiers.multilabel.BR
i:Classifier_ops=[-W, weka.classifiers.rules.ZeroR]
i:Classifier_info=
i:Dataset_name=PlainAbstractsBehavioralDomainLabels
i:Type=ML
i:Threshold=0.2289156626506024
i:Verbosity=1
v:N_train=247.0
v:N_test=3.0
v:LCard_train=1.8461538461538463
v:LCard_test=0.0
v:Build_time=2.79
v:Test_time=0.005
v:Total_time=2.795
[0, 0, 0]:[0.05622489959839357, 0.012048192771084338, 0.08433734939759036]
[0, 0, 0]:[0.05622489959839357, 0.012048192771084338, 0.08433734939759036]
[0, 0, 0]:[0.05622489959839357, 0.012048192771084338, 0.08433734939759036]

我从机器学习的文本文件中得到了这个结果，我如何才能只在另一个文本文件或任何文件中显示这些数据:

1. 0.05622489959839357, 0.012048192771084338, 0.08433734939759036
2. 0.05622489959839357, 0.012048192771084338, 0.08433734939759036
3. 0.05622489959839357, 0.012048192771084338, 0.08433734939759036

Answer 1

我不是 RegEx 方面的专家，所以如果专家能够纠正我的模式，那就太好了，但以下代码至少可以正常工作:

FileInputStream fileInputStream = new FileInputStream("data.txt");
File outputFile = new File("out.txt");
PrintWriter writer = new PrintWriter(outputFile, "UTF-8");
BufferedReader bf = new BufferedReader(new InputStreamReader(fileInputStream));
int count = 1;
String out;
Pattern pattern = Pattern.compile(":\\[((\\d\\.\\d+(,\\s)?){0,4})\\]$");

while ((out = bf.readLine()) != null){
    Matcher matcher = pattern.matcher(out);
    if (matcher.find()){
        String capture = count + ". " + matcher.group(1);
        writer.println(capture);
        System.out.println(capture);
        count++;
    }
}
fileInputStream.close();
writer.close();

所以即使我会处理以下不同长度的行:

[0, 0, 0]:[0.05622489959839357, 0.012048192771084338, 0.08433734939759036, 0.55]
[0, 0, 0]:[0.05622489959839357, 0.012048192771084338, 0.08433734939759036]
[0, 0, 0]:[0.05622489959839357, 0.012048192771084338, 0.08433734939759036]

输出将是:

1. 0.05622489959839357, 0.012048192771084338, 0.08433734939759036, 0.55
2. 0.05622489959839357, 0.012048192771084338, 0.08433734939759036
3. 0.05622489959839357, 0.012048192771084338, 0.08433734939759036