What are the output shape of LSTM with “return_sequences” equal to “True” or “False”?












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What are the output shape of LSTM with Keras implementation when "return_sequences" equals to "True" or "False" ?






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    $begingroup$


    What are the output shape of LSTM with Keras implementation when "return_sequences" equals to "True" or "False" ?






    lstm







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      1





      $begingroup$


      What are the output shape of LSTM with Keras implementation when "return_sequences" equals to "True" or "False" ?






      lstm







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      $endgroup$




      What are the output shape of LSTM with Keras implementation when "return_sequences" equals to "True" or "False" ?






      lstm




      lstm






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      edited 20 hours ago







      user145959

















      asked 20 hours ago









      user145959user145959

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          Assuming your output state size is h. You will generate nxh for n data points if return_sequences is false. On the other hand you would be having nxtxh dimensional array as output if return_sequences is set to true. Here t is the number of timestamps in each data point.






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          • $begingroup$
            So choosing return_sequences = True/False doesn't change the 3D array output shape?
            $endgroup$
            – user145959
            15 hours ago










          • $begingroup$
            It does. In false case you got last hidden state out. But in true case every internal hidden state gets released out.
            $endgroup$
            – Kiritee Gak
            15 hours ago










          • $begingroup$
            Aha, you meant one dimension vector by h.
            $endgroup$
            – user145959
            13 hours ago










          • $begingroup$
            Yes. That is right.
            $endgroup$
            – Kiritee Gak
            12 hours ago











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          $begingroup$

          Assuming your output state size is h. You will generate nxh for n data points if return_sequences is false. On the other hand you would be having nxtxh dimensional array as output if return_sequences is set to true. Here t is the number of timestamps in each data point.






          share|improve this answer









          $endgroup$













          • $begingroup$
            So choosing return_sequences = True/False doesn't change the 3D array output shape?
            $endgroup$
            – user145959
            15 hours ago










          • $begingroup$
            It does. In false case you got last hidden state out. But in true case every internal hidden state gets released out.
            $endgroup$
            – Kiritee Gak
            15 hours ago










          • $begingroup$
            Aha, you meant one dimension vector by h.
            $endgroup$
            – user145959
            13 hours ago










          • $begingroup$
            Yes. That is right.
            $endgroup$
            – Kiritee Gak
            12 hours ago
















          1












          $begingroup$

          Assuming your output state size is h. You will generate nxh for n data points if return_sequences is false. On the other hand you would be having nxtxh dimensional array as output if return_sequences is set to true. Here t is the number of timestamps in each data point.






          share|improve this answer









          $endgroup$













          • $begingroup$
            So choosing return_sequences = True/False doesn't change the 3D array output shape?
            $endgroup$
            – user145959
            15 hours ago










          • $begingroup$
            It does. In false case you got last hidden state out. But in true case every internal hidden state gets released out.
            $endgroup$
            – Kiritee Gak
            15 hours ago










          • $begingroup$
            Aha, you meant one dimension vector by h.
            $endgroup$
            – user145959
            13 hours ago










          • $begingroup$
            Yes. That is right.
            $endgroup$
            – Kiritee Gak
            12 hours ago














          1












          1








          1





          $begingroup$

          Assuming your output state size is h. You will generate nxh for n data points if return_sequences is false. On the other hand you would be having nxtxh dimensional array as output if return_sequences is set to true. Here t is the number of timestamps in each data point.






          share|improve this answer









          $endgroup$



          Assuming your output state size is h. You will generate nxh for n data points if return_sequences is false. On the other hand you would be having nxtxh dimensional array as output if return_sequences is set to true. Here t is the number of timestamps in each data point.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered 16 hours ago









          Kiritee GakKiritee Gak

          1,2541420




          1,2541420












          • $begingroup$
            So choosing return_sequences = True/False doesn't change the 3D array output shape?
            $endgroup$
            – user145959
            15 hours ago










          • $begingroup$
            It does. In false case you got last hidden state out. But in true case every internal hidden state gets released out.
            $endgroup$
            – Kiritee Gak
            15 hours ago










          • $begingroup$
            Aha, you meant one dimension vector by h.
            $endgroup$
            – user145959
            13 hours ago










          • $begingroup$
            Yes. That is right.
            $endgroup$
            – Kiritee Gak
            12 hours ago


















          • $begingroup$
            So choosing return_sequences = True/False doesn't change the 3D array output shape?
            $endgroup$
            – user145959
            15 hours ago










          • $begingroup$
            It does. In false case you got last hidden state out. But in true case every internal hidden state gets released out.
            $endgroup$
            – Kiritee Gak
            15 hours ago










          • $begingroup$
            Aha, you meant one dimension vector by h.
            $endgroup$
            – user145959
            13 hours ago










          • $begingroup$
            Yes. That is right.
            $endgroup$
            – Kiritee Gak
            12 hours ago
















          $begingroup$
          So choosing return_sequences = True/False doesn't change the 3D array output shape?
          $endgroup$
          – user145959
          15 hours ago




          $begingroup$
          So choosing return_sequences = True/False doesn't change the 3D array output shape?
          $endgroup$
          – user145959
          15 hours ago












          $begingroup$
          It does. In false case you got last hidden state out. But in true case every internal hidden state gets released out.
          $endgroup$
          – Kiritee Gak
          15 hours ago




          $begingroup$
          It does. In false case you got last hidden state out. But in true case every internal hidden state gets released out.
          $endgroup$
          – Kiritee Gak
          15 hours ago












          $begingroup$
          Aha, you meant one dimension vector by h.
          $endgroup$
          – user145959
          13 hours ago




          $begingroup$
          Aha, you meant one dimension vector by h.
          $endgroup$
          – user145959
          13 hours ago












          $begingroup$
          Yes. That is right.
          $endgroup$
          – Kiritee Gak
          12 hours ago




          $begingroup$
          Yes. That is right.
          $endgroup$
          – Kiritee Gak
          12 hours ago


















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