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def train_data(df, column):
    
    tfidf_vectorizer = TfidfVectorizer(stop_words='english')
    tfidf_vectorizer = TfidfVectorizer()
    tfidf_vectorizer = tfidf_vectorizer.fit(df[column])
    sparse_matrix = tfidf_vectorizer.fit_transform(df[column]) 
    doc_term_matrix = sparse_matrix.todense()
    df_train_tfidf = pd.DataFrame(doc_term_matrix, 
                      columns=tfidf_vectorizer.get_feature_names(), 
                      index=df.event_id)
    
    count_vectorizer = CountVectorizer(stop_words='english')
    count_vectorizer = CountVectorizer()
    count_vectorizer = count_vectorizer.fit(df[column])
    sparse_matrix    = count_vectorizer.fit_transform(df[column]) 
    doc_term_matrix  = sparse_matrix.todense()
    df_train_count   = pd.DataFrame(doc_term_matrix, 
                      columns=count_vectorizer.get_feature_names(), 
                      index=df.event_id)
    
    return df_train_tfidf, df_train_count, tfidf_vectorizer, count_vectorizer