LDA for each target in a binary classification problem












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I have a question around using LDA which may be very foolish but I am still gonna ask anyway.



Problem Statement: To classify documents into complaints and queries by processing text.



Current Approach: After preprocessing text, I am using LDA on the entire text with 20 topics and feed the probabilities to a dataframe and use a classification algorithm to predict the classes.



Which I think is the correct way to use LDA



Second Approach: (This is where the confusion lies): Does it make sense to train complaints and queries separately with 10 topics using LDA and then construct a dataframe with 20 columns(10 from complaints, 10 from queries) to pass to a classification algorithm.



In the future, this model will have process an incoming text thru both the LDA models and pass the output to a classification algorithm in order to separate complaints and queries.



I don't believe that a second approach is a valid approach but someone has suggested me so and I am trying to understand how this could be valid. Or is there a way to take 10 topics from each complaint and query from the LDA model and feed them into a dataframe in order to predict if it is a complaint or a query.









share









$endgroup$

















    0












    $begingroup$


    I have a question around using LDA which may be very foolish but I am still gonna ask anyway.



    Problem Statement: To classify documents into complaints and queries by processing text.



    Current Approach: After preprocessing text, I am using LDA on the entire text with 20 topics and feed the probabilities to a dataframe and use a classification algorithm to predict the classes.



    Which I think is the correct way to use LDA



    Second Approach: (This is where the confusion lies): Does it make sense to train complaints and queries separately with 10 topics using LDA and then construct a dataframe with 20 columns(10 from complaints, 10 from queries) to pass to a classification algorithm.



    In the future, this model will have process an incoming text thru both the LDA models and pass the output to a classification algorithm in order to separate complaints and queries.



    I don't believe that a second approach is a valid approach but someone has suggested me so and I am trying to understand how this could be valid. Or is there a way to take 10 topics from each complaint and query from the LDA model and feed them into a dataframe in order to predict if it is a complaint or a query.









    share









    $endgroup$















      0












      0








      0





      $begingroup$


      I have a question around using LDA which may be very foolish but I am still gonna ask anyway.



      Problem Statement: To classify documents into complaints and queries by processing text.



      Current Approach: After preprocessing text, I am using LDA on the entire text with 20 topics and feed the probabilities to a dataframe and use a classification algorithm to predict the classes.



      Which I think is the correct way to use LDA



      Second Approach: (This is where the confusion lies): Does it make sense to train complaints and queries separately with 10 topics using LDA and then construct a dataframe with 20 columns(10 from complaints, 10 from queries) to pass to a classification algorithm.



      In the future, this model will have process an incoming text thru both the LDA models and pass the output to a classification algorithm in order to separate complaints and queries.



      I don't believe that a second approach is a valid approach but someone has suggested me so and I am trying to understand how this could be valid. Or is there a way to take 10 topics from each complaint and query from the LDA model and feed them into a dataframe in order to predict if it is a complaint or a query.









      share









      $endgroup$




      I have a question around using LDA which may be very foolish but I am still gonna ask anyway.



      Problem Statement: To classify documents into complaints and queries by processing text.



      Current Approach: After preprocessing text, I am using LDA on the entire text with 20 topics and feed the probabilities to a dataframe and use a classification algorithm to predict the classes.



      Which I think is the correct way to use LDA



      Second Approach: (This is where the confusion lies): Does it make sense to train complaints and queries separately with 10 topics using LDA and then construct a dataframe with 20 columns(10 from complaints, 10 from queries) to pass to a classification algorithm.



      In the future, this model will have process an incoming text thru both the LDA models and pass the output to a classification algorithm in order to separate complaints and queries.



      I don't believe that a second approach is a valid approach but someone has suggested me so and I am trying to understand how this could be valid. Or is there a way to take 10 topics from each complaint and query from the LDA model and feed them into a dataframe in order to predict if it is a complaint or a query.







      classification nlp topic-model lda binary





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      asked 5 mins ago









      ShoaibkhanzShoaibkhanz

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