title: im trying to transform using tfidf but it is giving error
body: <p>I'm just trying to fit but it is giving this error. stemming is done</p>
  <pre><code>vectorizer_tf =TfidfVectorizer(df['Stemmed'],max_df=0.75,max_features=2000,lowercase=False, ngram_range=(1,2))
  train_vec = vectorizer_tf.fit_transform(df['Description_no_sw'])
  </code></pre>
  <p>error  : The truth value of a Series is ambiguous. Use a.empty, a.bool(),
  a.item(), a.any() or a.all()</p>
  <p>I'm just trying to fit but it is giving this error. stemming is done</p>