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TDIF toarray() returns an array of zeros


minimization with a negative cost function: works in MATLAB, not in PythonHandling categorical features in Factorization Machines algorithm - Feature Hashing vs. One-Hot encodingIdf values of English wordsSklearn tfidf vectorize returns different shape after fit_transform()ANN applied to Boston Housing dataset returns negative valueMultidimensional Groupby to ND ArrayDo I need a next for loop in order to get all values?XGBoost: Quantifying Feature ImportancesFace Recognition Using HOG+SVMIndexError: too many indices for array













0












$begingroup$


radius = tvec.fit_transform(test_df.Tweet_lemmatized)
c = tvec.get_feature_names()
print(radius)


This returns the correct values, but when I try to convert it to array, I get an array of zeros instead.



Sample of correct values for radius:



(0, 931) 0.46436660485060216
(0, 861) 0.2968833582955266
(0, 484) 0.41499526789066504
(0, 363) 0.3991012474411105
(0, 560) 0.46436660485060216
(0, 1300) 0.3861148871586334
(1, 861) 0.31024421676439334
(1, 1252) 0.38207837156371705
(1, 935) 0.2915380548059053
(1, 894) 0.4852648341103948
(1, 299) 0.4550847285244575
(1, 670) 0.2766014729498025
(1, 1250) 0.3920175536236695
(2, 861) 0.30814515003485


but radius.toarray() and radius.todense() returns:



[[0. 0. 0. ... 0. 0. 0.]
[0. 0. 0. ... 0. 0. 0.]
[0. 0. 0. ... 0. 0. 0.]
...
[0. 0. 0. ... 0. 0. 0.]
[0. 0. 0. ... 0. 0. 0.]
[0. 0. 0. ... 0. 0. 0.]]


radius.shape is (498, 1776)










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$endgroup$
















    0












    $begingroup$


    radius = tvec.fit_transform(test_df.Tweet_lemmatized)
    c = tvec.get_feature_names()
    print(radius)


    This returns the correct values, but when I try to convert it to array, I get an array of zeros instead.



    Sample of correct values for radius:



    (0, 931) 0.46436660485060216
    (0, 861) 0.2968833582955266
    (0, 484) 0.41499526789066504
    (0, 363) 0.3991012474411105
    (0, 560) 0.46436660485060216
    (0, 1300) 0.3861148871586334
    (1, 861) 0.31024421676439334
    (1, 1252) 0.38207837156371705
    (1, 935) 0.2915380548059053
    (1, 894) 0.4852648341103948
    (1, 299) 0.4550847285244575
    (1, 670) 0.2766014729498025
    (1, 1250) 0.3920175536236695
    (2, 861) 0.30814515003485


    but radius.toarray() and radius.todense() returns:



    [[0. 0. 0. ... 0. 0. 0.]
    [0. 0. 0. ... 0. 0. 0.]
    [0. 0. 0. ... 0. 0. 0.]
    ...
    [0. 0. 0. ... 0. 0. 0.]
    [0. 0. 0. ... 0. 0. 0.]
    [0. 0. 0. ... 0. 0. 0.]]


    radius.shape is (498, 1776)










    share|improve this question









    New contributor




    Ivy is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.







    $endgroup$














      0












      0








      0





      $begingroup$


      radius = tvec.fit_transform(test_df.Tweet_lemmatized)
      c = tvec.get_feature_names()
      print(radius)


      This returns the correct values, but when I try to convert it to array, I get an array of zeros instead.



      Sample of correct values for radius:



      (0, 931) 0.46436660485060216
      (0, 861) 0.2968833582955266
      (0, 484) 0.41499526789066504
      (0, 363) 0.3991012474411105
      (0, 560) 0.46436660485060216
      (0, 1300) 0.3861148871586334
      (1, 861) 0.31024421676439334
      (1, 1252) 0.38207837156371705
      (1, 935) 0.2915380548059053
      (1, 894) 0.4852648341103948
      (1, 299) 0.4550847285244575
      (1, 670) 0.2766014729498025
      (1, 1250) 0.3920175536236695
      (2, 861) 0.30814515003485


      but radius.toarray() and radius.todense() returns:



      [[0. 0. 0. ... 0. 0. 0.]
      [0. 0. 0. ... 0. 0. 0.]
      [0. 0. 0. ... 0. 0. 0.]
      ...
      [0. 0. 0. ... 0. 0. 0.]
      [0. 0. 0. ... 0. 0. 0.]
      [0. 0. 0. ... 0. 0. 0.]]


      radius.shape is (498, 1776)










      share|improve this question









      New contributor




      Ivy is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.







      $endgroup$




      radius = tvec.fit_transform(test_df.Tweet_lemmatized)
      c = tvec.get_feature_names()
      print(radius)


      This returns the correct values, but when I try to convert it to array, I get an array of zeros instead.



      Sample of correct values for radius:



      (0, 931) 0.46436660485060216
      (0, 861) 0.2968833582955266
      (0, 484) 0.41499526789066504
      (0, 363) 0.3991012474411105
      (0, 560) 0.46436660485060216
      (0, 1300) 0.3861148871586334
      (1, 861) 0.31024421676439334
      (1, 1252) 0.38207837156371705
      (1, 935) 0.2915380548059053
      (1, 894) 0.4852648341103948
      (1, 299) 0.4550847285244575
      (1, 670) 0.2766014729498025
      (1, 1250) 0.3920175536236695
      (2, 861) 0.30814515003485


      but radius.toarray() and radius.todense() returns:



      [[0. 0. 0. ... 0. 0. 0.]
      [0. 0. 0. ... 0. 0. 0.]
      [0. 0. 0. ... 0. 0. 0.]
      ...
      [0. 0. 0. ... 0. 0. 0.]
      [0. 0. 0. ... 0. 0. 0.]
      [0. 0. 0. ... 0. 0. 0.]]


      radius.shape is (498, 1776)







      python sentiment-analysis tfidf






      share|improve this question









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      share|improve this question









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      edited Mar 19 at 11:43









      tuomastik

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      753418






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      asked Mar 19 at 3:52









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