Oh ok thank you. How can I check regex of sklearn and modify it?
On Thu, Nov 19, 2015 at 11:40 AM, Andreas Mueller <t3k...@gmail.com> wrote: > Yeah but if the regexp is different you will get different results. > > > > On 11/19/2015 02:20 PM, Ehsan Asgari wrote: > > No, but actually there is no punctuation in my text, only space between > terms. > > Best, > Ehsan > > > On Thu, Nov 19, 2015 at 11:13 AM, Fred Mailhot <fred.mail...@gmail.com> > wrote: > >> Have you checked that your other program tokenizes the same way as the >> default sklearn tokenization? >> >> >> On 19 November 2015 at 11:09, Ehsan Asgari < <asg...@berkeley.edu> >> asg...@berkeley.edu> wrote: >> >>> Hi, >>> >>> Thank you, but it didn't work. >>> I checked len(tf.vocabulary_) and it is also 1900 instead of 1914. >>> I have another program that counts distinct terms and it is 1914 there. >>> >>> Best, >>> Ehsan >>> >>> >>> >>> On Thu, Nov 19, 2015 at 9:36 AM, Andreas Mueller <t3k...@gmail.com> >>> wrote: >>> >>>> You should set min_df=1 and max_df=1.0 (which should be the default, >>>> but it depends on your scikit-learn version). >>>> How did you determine that your vocabulary size should be 1860? >>>> >>>> >>>> >>>> On 11/19/2015 12:31 PM, Ehsan Asgari wrote: >>>> >>>> Hi, >>>> >>>> Thank you for your reply. I changed my delimeters from tab to space and >>>> most of the problem has been solved (1900 index term from 1914). However, >>>> still there are few words that are excluded. I didn't set any parameter as >>>> you can see in the code. >>>> >>>> tf = TfidfVectorizer(ngram_range=(1,ngram),use_idf=False) >>>>> tf_matrix = tf.fit_transform(corpus) >>>>> feature_names = tf.get_feature_names() >>>>> >>>>> Should I play with the min_df and max_df? >>>> >>>> Best, >>>> Ehsan >>>> >>>> On Nov 19, 2015, at 9:01 AM, Chris Holdgraf < <choldg...@berkeley.edu> >>>> choldg...@berkeley.edu> wrote: >>>> >>>> If you vocab is indeed being cut down, could it be because some words >>>> don't pass through the word frequency cutoff filters? (min_df, max_df) >>>> >>>> On Thu, Nov 19, 2015 at 8:55 AM, Andreas Mueller < <t3k...@gmail.com> >>>> t3k...@gmail.com> wrote: >>>> >>>>> Hi Ehsan. >>>>> Which version of scikit-learn are you using? >>>>> And why do you think the vocabulary size is 1860? >>>>> What is len(tf.vocabulary_)? >>>>> >>>>> Andy >>>>> >>>>> On 11/18/2015 11:45 PM, Ehsan Asgari wrote: >>>>> >>>>> Hi, >>>>> >>>>> I am using TfidfVectorizer of sklearn.feature_extraction.text for >>>>> generating tf-idf matrix of a corpus. However, when I look at the features >>>>> extracted from my corpus it seems that it has reduced my vocabulary size >>>>> from 1860 to 598! I tried to play with max_df, min_df, and max_features. >>>>> But nothing changed. >>>>> >>>>> tf = TfidfVectorizer(ngram_range=(1,ngram),use_idf=False) >>>>> tf_matrix = tf.fit_transform(corpus) >>>>> feature_names = tf.get_feature_names() >>>>> >>>>> Does someone have an idea how to solve this problem? >>>>> >>>>> Thank you, >>>>> >>>>> Ehsan >>>>> >>>>> >>>>> >>>>> >>>>> ------------------------------------------------------------------------------ >>>>> >>>>> >>>>> >>>>> _______________________________________________ >>>>> Scikit-learn-general mailing >>>>> listScikit-learn-general@lists.sourceforge.nethttps://lists.sourceforge.net/lists/listinfo/scikit-learn-general >>>>> >>>>> >>>>> >>>>> >>>>> ------------------------------------------------------------------------------ >>>>> >>>>> _______________________________________________ >>>>> Scikit-learn-general mailing list >>>>> <Scikit-learn-general@lists.sourceforge.net> >>>>> Scikit-learn-general@lists.sourceforge.net >>>>> <https://lists.sourceforge.net/lists/listinfo/scikit-learn-general> >>>>> https://lists.sourceforge.net/lists/listinfo/scikit-learn-general >>>>> >>>>> >>>> >>>> >>>> -- >>>> _____________________________________ >>>> >>>> PhD Candidate in Neuroscience | UC Berkeley <http://hwni.org/> >>>> Editor and Web Director | Berkeley Science Review >>>> <http://sciencereview.berkeley.edu/> >>>> _____________________________________ >>>> >>>> >>>> ------------------------------------------------------------------------------ >>>> >>>> _______________________________________________ >>>> Scikit-learn-general mailing list >>>> <Scikit-learn-general@lists.sourceforge.net> >>>> Scikit-learn-general@lists.sourceforge.net >>>> <https://lists.sourceforge.net/lists/listinfo/scikit-learn-general> >>>> https://lists.sourceforge.net/lists/listinfo/scikit-learn-general >>>> >>>> >>>> >>>> ------------------------------------------------------------------------------ >>>> >>>> >>>> >>>> _______________________________________________ >>>> Scikit-learn-general mailing >>>> listScikit-learn-general@lists.sourceforge.nethttps://lists.sourceforge.net/lists/listinfo/scikit-learn-general >>>> >>>> >>>> >>>> >>>> ------------------------------------------------------------------------------ >>>> >>>> _______________________________________________ >>>> Scikit-learn-general mailing list >>>> Scikit-learn-general@lists.sourceforge.net >>>> https://lists.sourceforge.net/lists/listinfo/scikit-learn-general >>>> >>>> >>> >>> >>> ------------------------------------------------------------------------------ >>> >>> _______________________________________________ >>> Scikit-learn-general mailing list >>> Scikit-learn-general@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/scikit-learn-general >>> >>> >> >> >> ------------------------------------------------------------------------------ >> >> _______________________________________________ >> Scikit-learn-general mailing list >> Scikit-learn-general@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/scikit-learn-general >> >> > > > ------------------------------------------------------------------------------ > > > > _______________________________________________ > Scikit-learn-general mailing > listScikit-learn-general@lists.sourceforge.nethttps://lists.sourceforge.net/lists/listinfo/scikit-learn-general > > > > > ------------------------------------------------------------------------------ > > _______________________________________________ > Scikit-learn-general mailing list > Scikit-learn-general@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/scikit-learn-general > >
------------------------------------------------------------------------------
_______________________________________________ Scikit-learn-general mailing list Scikit-learn-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/scikit-learn-general
