Questions tagged [reshape]

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5
votes
1answer
10k views

Please explain input shape in Keras

My data consists of 2-dimensional arrays with shape (2,3). The whole dataset (emp) consists of 12 items (I know that it is too small of a number for an NN training, ...
3
votes
4answers
2k views

rows to columns in data.table R (or Python)

This is something I can't achieve with the reshape2 library for R. I have the following data: ...
3
votes
1answer
3k views

How to slice an input in keras?

I give to keras an input of shape input_shape=(500,). For some reasons, I would like to decompose the input vector into to vectors of respective shapes ...
3
votes
1answer
7k views

Are view() in Pytorch and reshape() in Numpy similar?

Are view() in torch and reshape() in Numpy similar? view() is applied on torch tensors to ...
2
votes
1answer
4k views

Keras input shape error

I am trying to load a Keras model and make predictions with it and run into a strange error. An minimal example is the following: ...
2
votes
1answer
650 views

Is the multilayer perceptron only able to accept 1d vector of input data? If yes, why is this so?

I am going through the tutorial at the link below which uses MNIST handwritten digit database. https://machinelearningmastery.com/handwritten-digit-recognition-using-convolutional-neural-networks-...
2
votes
1answer
159 views

Keras loaded model output is different from the training model output

When I train my model it has a two-dimension output - it is (none, 1) - corresponding to the time series I'm trying to predict. But whenever I load the saved model in order to make predictions, it has ...
1
vote
1answer
122 views

What is the difference between different batch_sizes in Keras Sequential models?

I am interested to know, what happens when I choose batch_size=1 or batch_size=1000 or any other numbers in ...
1
vote
1answer
79 views

Modifying U-Net implementation for smaller image size

I'm implementing the U-Net model per the published paper here. This is my model so far: ...
1
vote
2answers
433 views

Problem in input shape Keras-LSTM [closed]

I want to make a predictor using Keras LSTM model. I have a sequence of places visited. The task is to predict the last destination. I went through different examples but it seems I am not able to ...
1
vote
1answer
20k views

ValueError: Shapes are incompatible when fitting using ImageDataGenerator

I got this error ValueError: Shapes (None, 1) and (None, 3) are incompatible when training my Sequential model. I could not figure out which shapes are actually ...
1
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2answers
3k views

Data Reshaping for CNN using Keras

I'm a beginner in Keras. I've loaded MNIST dataset in Keras and checked it's dimension. The code is ...
1
vote
1answer
350 views

numpy array reshape question

Let's say that I have image data with shape $(32, 32, 3)$ and $50000$ If I would like to reshape it to $(50000, 3, 32, 32)$ what should I do? I tried ...
1
vote
0answers
25 views

How to correct format the dimension of the validation set - time series

I'm trying to understand how to add my validation data into my LSTM. At the moment I'm loading the train and the test set in the following way: First of all I load my time series from a directory, ...
1
vote
0answers
79 views

pandas: reshaping the dataset, moving column name as rows [closed]

I currently have the following table: ...
1
vote
1answer
825 views

Scalling and unscalling of data for SVR prediction

I'm trying to use SVR to predict a certain feature. I create the model with the following code: ...
1
vote
1answer
126 views

how to create multiple plot from a panda Dataframe

I want to plot multiple plots. The data is stored in a pandas dataframe and each row should be a seperate plot. Each row has an ID (ZRD_ID) which doenst matter and a date (TAG) and 24 values to be ...
1
vote
0answers
76 views

ValueError when reshaping to 4 dim array for the Keras API

DL beginner here. I'm trying to implement LeNet using Keras and apply it on good ol' MNIST. ...
1
vote
0answers
19 views

Tensor Shape 'Reshape' during the dataflow

I would like to combine an Autoencoder with a LSTM. However, the 'timestep' is a block for the implements and I would like to train them together. Is there a solution to the tensor 'reshape'? I mean, ...
0
votes
1answer
729 views

keras Sequential CNN for image data reshaping data issues

I am new at keras and CNN and am working on building at CNN for sequential analysis of movement in a image. What I am having issues with is the reshaping the data and the labels that go into the ...
0
votes
1answer
611 views

Reshape features in rows intro columns python?

My features are arranged in rows, Can anyone tell me please how can I transform them into columns with theirs corresponding times and values?? I mean each features has a set of corresponding times and ...
0
votes
1answer
18 views

Is it possible to apply pooling across the channel dimension of the input tensor?

I have an input tensor of the shape (32, 256, 256, 256). In this tensor shape, 32 is the batch size. second 256 is the number of channels in the given image of size 256 X 256. I want to do pooling in ...
0
votes
2answers
360 views

Problems with shape of Conv1D on Keras

I have some problems with layers construction on Keras. I explain the whole problem: I have a feature matrix, with dimensions: 2023 (rows) x 65 (features); I tried to build a CNN, with Conv1D as ...
0
votes
1answer
21 views

Condense matrix of values into one column?

I have a dataset where I have unnecessarily duplicated column variables that I want to condense down. I wish the output wasn't so clumsy and I've already had to do some work to transform it and make ...
0
votes
1answer
499 views

ValueError: Error when checking input: expected the_input to have 3 dimensions, but got array with shape (14174, 1)

hope you're all doing good ! I am working on Automatic Speech Recognition with Python with the LibriSpeech Dataset. After preprocessing the audios data and applying an "MFCC featurizing" I ...
0
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0answers
31 views

Alternatives to reshaping the data

I have a medical dataset which looks like this: ...
0
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1answer
39 views

Reshaping Pandas DataFrame

I am trying to do the following as shown below. ...
0
votes
1answer
913 views

Predictions with arbitrairy sequence length for stateful RNN (LSTM/GRU) in Keras

I have time series data of the following properties: input shape: (num_timesteps, num_features) output shape: (num_timesteps, num_outputs) I reshape it to batch ...
-1
votes
1answer
27 views

How can I reshape this array?

I have few difficulties in picking values from an array. Here is a simplified version of the concerned part of the code. (If you would like to put the whole code please mention it) ...