matriz de confusão de duas colunas pandas datraframe
import pandas as pd
def confusion_matrix(df: pd.DataFrame, col1: str, col2: str):
"""
Given a dataframe with at least
two categorical columns, create a
confusion matrix of the count of the columns
cross-counts
use like:
>>> confusion_matrix(test_df, 'actual_label', 'predicted_label')
"""
return (
df
.groupby([col1, col2])
.size()
.unstack(fill_value=0)
)
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