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How does GlobalMaxPooling work on the output of Conv1D?



2019 Community Moderator ElectionOutput a word instead of a vector after word embedding?In a convolutional neural network (CNN), when convolving the image, is the operation used the dot product or the sum of element-wise multiplication?how to deal with varying output layerHow filters are made in a CNN?Visualizing word embeddingsWhat is the purpose of a 1x1 convolutional layer?degeneracy of a CNN having only 1 convolution kernel down to a fully connected NNWhat is the motivation for row-wise convolution and folding in Kalchbrenner et al. (2014)?Weight update to fully convolutional network when supervision is only for a patchHow to set kernel size (height and width) for 1D convolution layer in CNN Keras R API for doc2vec input?










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In the field of text classification, it is common to use Conv1D filters running over word embeddings and then getting a single value on the output for each filter using GlobalMaxPooling1D.



As I understand the process, the convolutional filter is a matrix of the same size as the $$textsize of filter matrix = textembedding dimcdottextwidth of the filter$$ The filter matrix is then applied to the input embeddings (multiplied element by element) which produces a matrix of the same size for each filter position. Not a single number.



So how does the global max pooling get a single number on the output? Does it simply take a maximum over all the values in all the output matrices, or is there any other processing?



Please correct me if I'm wrong.










share|improve this question











$endgroup$
















    0












    $begingroup$


    In the field of text classification, it is common to use Conv1D filters running over word embeddings and then getting a single value on the output for each filter using GlobalMaxPooling1D.



    As I understand the process, the convolutional filter is a matrix of the same size as the $$textsize of filter matrix = textembedding dimcdottextwidth of the filter$$ The filter matrix is then applied to the input embeddings (multiplied element by element) which produces a matrix of the same size for each filter position. Not a single number.



    So how does the global max pooling get a single number on the output? Does it simply take a maximum over all the values in all the output matrices, or is there any other processing?



    Please correct me if I'm wrong.










    share|improve this question











    $endgroup$














      0












      0








      0





      $begingroup$


      In the field of text classification, it is common to use Conv1D filters running over word embeddings and then getting a single value on the output for each filter using GlobalMaxPooling1D.



      As I understand the process, the convolutional filter is a matrix of the same size as the $$textsize of filter matrix = textembedding dimcdottextwidth of the filter$$ The filter matrix is then applied to the input embeddings (multiplied element by element) which produces a matrix of the same size for each filter position. Not a single number.



      So how does the global max pooling get a single number on the output? Does it simply take a maximum over all the values in all the output matrices, or is there any other processing?



      Please correct me if I'm wrong.










      share|improve this question











      $endgroup$




      In the field of text classification, it is common to use Conv1D filters running over word embeddings and then getting a single value on the output for each filter using GlobalMaxPooling1D.



      As I understand the process, the convolutional filter is a matrix of the same size as the $$textsize of filter matrix = textembedding dimcdottextwidth of the filter$$ The filter matrix is then applied to the input embeddings (multiplied element by element) which produces a matrix of the same size for each filter position. Not a single number.



      So how does the global max pooling get a single number on the output? Does it simply take a maximum over all the values in all the output matrices, or is there any other processing?



      Please correct me if I'm wrong.







      keras nlp cnn






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited 6 hours ago







      MSKL

















      asked 6 hours ago









      MSKLMSKL

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          $begingroup$

          Apparently I forgot how the convolution works. The input is multiplied element wise with the filter weights and the products are then summed. That's how a single value is obtained on the output.






          share|improve this answer









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            $begingroup$

            Apparently I forgot how the convolution works. The input is multiplied element wise with the filter weights and the products are then summed. That's how a single value is obtained on the output.






            share|improve this answer









            $endgroup$

















              0












              $begingroup$

              Apparently I forgot how the convolution works. The input is multiplied element wise with the filter weights and the products are then summed. That's how a single value is obtained on the output.






              share|improve this answer









              $endgroup$















                0












                0








                0





                $begingroup$

                Apparently I forgot how the convolution works. The input is multiplied element wise with the filter weights and the products are then summed. That's how a single value is obtained on the output.






                share|improve this answer









                $endgroup$



                Apparently I forgot how the convolution works. The input is multiplied element wise with the filter weights and the products are then summed. That's how a single value is obtained on the output.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered 6 hours ago









                MSKLMSKL

                713




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