def add_data_point(self, precision, recall, f_score, sample_size):
        self.precision.append(precision)
        self.recall.append(recall)
        self.fscore.append(f_score)
        self.samplesize.append(sample_size)

        #clear cache
        self._cache = None
:param filename:
dataset/ETHPy150Open aalto-speech/morfessor/morfessor/evaluation.py/MorfessorEvaluationResult.add_data_point--crossover with--dataset/ETHPy150Open girishramnani/hacking-tools/file_hasher/_pfish_tools.py/CSVWriter.__init__