public void readInputDataFromExcel(String excelPath, int answerColNumber) {
        ExcelReader reader = new ExcelReader();
        reader.loadFile(excelPath);
        datas = reader.readData();
        for (List<Double> row : datas) {
            answers.add(row.get(answerColNumber - 1));
            row.remove(answerColNumber - 1);
        }
        //p_pop_size = datas.size();
    }