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I want to design a simple model that predicts the movement of coordinates with RNNs.

In a typical three-dimensional LSTM model, one feature is encoded as one hot encoding, and the x value is input as a three-dimensional matrix. (e.g., In seq2seq, abc => [[[1,0,0],[0,1,0],[0,0,1]]])

However, since I have to predict the x and y coordinate values, one hot encoding will inevitably produce a four-dimensional matrix.

What should I do with back-propagation? Or should I design a 3-D matrix using scalar values without one hot encoding?

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