我有一个文本数据框架需要进行分类。但我首先需要进行过采样。请查看下面的样本数据：

df=[['I am going to class today','I am going to class today','I am going to class today','I am going to class today','I am going to class today','I am going to class today','I am going to class today','I am going to class today','I am going to class today','I am going to class today','I am not going to class today','I am not going to class today','I am not going to class today','I am not going to class today'],['Positive','Positive','Positive','Positive','Positive','Positive','Positive','Positive','Positive','Positive','Negative','Negative','Negative','Negative']]df=pd.DataFrame(df)df=df.transpose()df.columns=['Features','Class']df          Features                       Class0   I am going to class today       Positive1   I am going to class today       Positive2   I am going to class today       Positive3   I am going to class today       Positive4   I am going to class today       Positive5   I am going to class today       Positive6   I am going to class today       Positive7   I am going to class today       Positive8   I am going to class today       Positive9   I am going to class today       Positive10  I am not going to class today   Negative11  I am not going to class today   Negative12  I am not going to class today   Negative13  I am not going to class today   Negativeoversample = RandomOverSampler(sampling_strategy='minority')# fit and apply the transformX_over, y_over = oversample.fit_resample(df['Features'], df['Class'])# summarize class distributionprint(Counter(y_over))

但这不起作用，并返回了ValueError: Expected 2D array, got 1D array instead:错误。我该如何对这些数据进行过采样？

回答：

我找到了问题所在。我需要重塑我的数据。

X_over, y_over = oversample.fit_resample(df['Features'].values.reshape(-1,1), df['Class'])

现在这起作用了。

Counter({'Positive': 10, 'Negative': 10})