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Questions tagged [dl4j]

Deeplearning4j is the first commercial-grade, open-source, distributed deep-learning library written for Java and Scala

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Deeplearning4j is the first commercial-grade, open-source, distributed deep-learning library written for Java and Scala. Integrated with Hadoop and Spark, DL4J is designed to be used in business environments, rather than as a research tool.

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208 questions
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Why DeepLearning4J CNN is returning not probabilities but only 0s and 1s in the INDArray output

I am playing with DL4J version 1.0.0-beta3 and trying to create a convolutional neural network for recognizing 32x32 images of chess pieces. Here is the code I use to create and train the net: public class BuildNetwork1 { public static void…
Krasimir Topchiyski
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Predicting next word using RNN in DL4J - What should 'labels' be?

I'm trying to create an RNN that would predict the next word, given the previous word. But I'm struggling with modeling this into a dataset, specifically, how to indicate the next word to be predicted as a 'label'. I could use a hot label encoded…
Ali
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A3C ArrayOutOfBounds

Error whenever I call A3CDiscreteDense().train(); Exception in thread "Thread-7" java.lang.ArrayIndexOutOfBoundsException: -1 at java.util.ArrayList.elementData(Unknown Source) at java.util.ArrayList.get(Unknown Source) at…
Akash garg
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nd4j dataset change to zero when i use shuffle method

I am using DeepLearning4J and nd4j-cuda-10.2. all of the DataSet elements change to zero after I use the shuffle() method. I have traced the code and I think there is a problem with the registerAction() method. DataSet…
jahan afrouz
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What could cause a state chart not to update while training a RL4J model inside Anylogic PLE?

I am trying to build a RL model with deep Q-Learning using RL4J in the Anylogic PLE as part of my thesis. Unfortunately, I am not overly familiar with Anylogic and DL4J and therefore might be missing some obvious steps. I only have access to the PLE…
Daniel
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What is the best way to train a deep reinforcement learning model with RL4J in Anylogic PLE?

I am trying to build a RL model with deep Q-Learning using RL4J in the Anylogic PLE as part of my thesis. Unfortunately, I am not overly familiar with Anylogic and DL4J and therefore might be missing some obvious steps. I only have access to the PLE…
Daniel
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Problems running Dl4j with CUDA

I'm trying to run a dl4j model using GPU instead of CPU. The model runs perfectly well using CPU. So I decided to try CUDA to be able to to take advantage of the my GPU. I followed every step described in here and for the CUDA install I followed the…
ABFovox
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DL4J: binarizing middle layer of autoencoder for semantic hashing

I'm trying to implement semantic hashing for the MNISTAutoencoder example, using DL4J. How would I binarize the middle layer activations? In the ideal case, I'm looking for some change to my network setup which gives (almost) binary activations for…
mstrap
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how can I reverse the elements of a column of a matrix in ND4J?

I am trying to rewrite this line of python code in JAVA with ND4j library. data[index_odd] = tmp[::-1,:] It reverses the column's elements. (in other words, the order of rows) I used this line but apparently it just works when…
Amir Shamaee
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Reduction of numbers accuracy in ND4J

I have an array namely “real”. it has a vector of double numbers. I am trying to create an INDArray based on my vector. my code is below : double real_d = (double) ArrBD.get(0); INDArray real = Nd4j.create(real_d); It works but unfortunately, it…
Amir Shamaee
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Setup linear regression with a factorMatrix - DL4j

I have a factorMatrix of type INDArray which is xIn It contains of 5 columns [A, B, C, D, E] and another INDArray with 1 column [y] which is yIn For the ones who are familiar with MatLab I could use now: modelTrain = fitlm([XInSample yInSample] ,…
Anna Klein
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How to create ND4J NDArrays on GPU in DeepLearning4J?

Is there a way to create NDArrays in DL4J so that the operations are done on GPU ? For example in pytorch, cuda0 = torch.device('cuda:0') x = torch.tensor([1., 2.], device=cuda0) I cannot find a way to specify a back-end (cpu or gpu) if my system…
Nitin Trivedi
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dl4j lstm not successful

Im trying to copy the exrcise about halfway down the page on this link: https://d2l.ai/chapter_recurrent-neural-networks/sequence.html The exercise uses a sine function to create 1000 data points between -1 through 1 and use a recurrent network to…
cagney
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Where can I find the installed header files for DL4J - INDArray related operations?

I have installed DL4J using maven. I need to see the installed .so and CPP header files that are used for INDArray calls? If I am not wrong the EXPORT functions are in NativeOps.h file. Where can I find them? I think they are located inside…
Nitin Trivedi
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Simple Reinforcement Learning example

i try to create a simplified rl4j example based on the existing Gym and Malmo examples. Given is a sine wave and the AI should say if we are on top of the wave, on bottom or somewhere else(noop). The SineRider is the "Game", State is the value of…
Sigmund Kreuzer
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