All Questions
682 questions
3
votes
0
answers
395
views
Fourier neural operator using wolfram mathematica
Fourier Neural Operator (FNO) is a neural network-based approach that combines deep learning with the Fourier transform to solve partial differential equations. It leverages the power of neural ...
- 835
1
vote
1
answer
212
views
Predict Function & Generating a Training Set
I am trying to use the Predict[] function to do a regression analysis. I have the data imported from a CSV and based on my past Python experience the libraries I used always have a slick way to take ...
- 55
3
votes
0
answers
125
views
FeatureExtraction[] for text -- to normalize text or not?
The title pretty much captures my question. When I use FeatureExtraction[] for text,
should I normalize text before parsing it through ...
- 5,391
0
votes
0
answers
70
views
How do I make Predict function accept a sequence of data inputs as a feature while training?
How do I make Predict function accept a sequence of data inputs as a feature while training? I am unable to use this :
trainingdata = { 5 -> {{1,4},{2,3}}, 6 -> {{2,4},{3,3}} , .... }
as ...
- 1,708
5
votes
0
answers
216
views
Modern topic modeling?
This question was asked in 2014: How to perform document classification (i.e. extracting topics from text)?
At the time user @V.E. gave a great little tutorial on LDA, but today, there's still no ...
- 31.8k
5
votes
1
answer
196
views
Sort symbols or characters by image complexity
As an example, I would like to sort the following characters by some sort of complexity measure:
...
- 6,027
5
votes
0
answers
186
views
Target Device->"GPU" Not Working For Machine Learning: LibraryFunction error
I'm running Wolfram Desktop version 13.2.1, and after downloading Visual Studio, Nvidia Toolkit version 12.1 and 11.2, and verifying that
...
- 683
16
votes
0
answers
698
views
How to reconstruct 3d meshes from 2d images of a scene?
The new ImageStitch was nice functionality added in v13, but is there anything available for constructing meshes (with color textures) from a bag of 2D images (...
- 31.8k
13
votes
1
answer
618
views
Wolfram Neural Net Repository Questions
I was a research scientist in the machine learning team, and mostly involved with the neural net repository.
- 131
0
votes
0
answers
33
views
What is the network structure of Ademxapp Model A1 Trained on Cityscapes Data in the Mathematica?
I want to implement the model (Ademxapp Model A1 Trained on Cityscapes Data) on my data for segmentation, so I need the partial structure of this model, can anyone help?
- 195
3
votes
1
answer
64
views
Sentiment analysis function (not using Classify)
I am looking to create a function that will take a text and parameter strings "neg","pos", and "sum" and calculate a sentiment value for the text. I want to use ...
- 41
2
votes
0
answers
145
views
Machine learning for symbolic mathematics
I came across a meaningful article about the use of machine learning (in particular, with Mathematica) to solve ODEs and find undefined integrals. Are there any other works, especially done with ...
- 29.1k
3
votes
0
answers
247
views
Why Mathematica's Classify gives 100% accuracy on FashionMNIST dataset
Tested on Mathematica 13.2
...
- 8,649
3
votes
0
answers
142
views
Using Mathematica ML models in another application
Using Mathematica, I trained and exported some machine learning models with the suggested file extension .wmlf. However, I noticed that these files are stored in HDF5 format. How can I import these ...
- 31
21
votes
4
answers
564
views
Find best region to put text onto image
Given an image upon which you want to inset text, the question arises:
What is the best sub-region to place text?
For example, given a background image I want to find the rectangle in the image (...
- 31.8k
0
votes
0
answers
76
views
Neural network: Segmentation of water and not water area
Good morning everyone. I have a large dataset of photographs similar to the one attached. It would be my intention to train a neural network to recognise water and "non-water" zones. How ...
- 109
1
vote
0
answers
96
views
What is that neural network?
I am teaching my comp to add naturals by creating a neural network:
...
- 29.1k
5
votes
2
answers
101
views
Which model behind SequencePredictorFunction?
Is the SequencePredictorFunction based on Hidden Markov Model?
If so, how does the model estimate the number of hidden states?
1
vote
1
answer
48
views
Why does ImageRecognition recognise some concepts in a list of concepts but not others?
Why can I successfully use an option list of the dog and cat entities with the ImageRecognition function but not use a similar option list for two aircraft entities
- 413
3
votes
4
answers
198
views
How to predict future samples from discrete samples of a low frequency signal?
Suppose I have discrete samples of a low frequency signal as in:
For example:
...
- 7,164
0
votes
0
answers
42
views
How to treat small numbers in order to gain efficiency and precision in neural network algorithm?
Unfortunately I won't be able to provide a MWE, as it would be too big and complex, and this question will be based on pure semantics, basically (and I understand if this is impossible to answer in ...
- 405
3
votes
0
answers
76
views
Performance Problems with Number-Recognizing AI Functions
I created an AI function that recognizes numbers using MNIST.
...
- 1,768
1
vote
1
answer
213
views
How can I get a mean ROC curve from multiple Classify iterations?
I'm running a classifier on some data using Classify. Because the classifier results depend on the data used for training, I decided to run the classifier in a loop ...
- 189
6
votes
1
answer
157
views
Graph Convolution Network, molecule activity
I am trying to translate an example code for graph convolution network from Deep Learning for Physical Scientists: Accelerating Research with Machine Learning.
Edward O. Pyzer-Knapp et. al. They have ...
- 739
1
vote
0
answers
104
views
Training stuck problem about SVM in Classify
fashion MNIST dataset
You can download the FasionMNIST and unzip the data, you'll see that train-images-idx3-ubyte.
You may also use official ...
- 8,649
3
votes
0
answers
184
views
TrainImageContentDetector gives very poor result on GPU compared to CPU
On the doc page of TrainImageContentDetector, there is an example of heart detector training. I tried this example with different TargetDevice and constrained the <...
- 17.4k
48
votes
3
answers
3k
views
Generalized Backpropagation for Neural Networks (e.g. DeepDream)
Is there currently any way to abuse NetTrain to maximize an arbitrary cost/utility -function in some hidden layer and/or even modify the input to increase neuron ...
- 8,529
17
votes
2
answers
338
views
How to export a ContentDetectorFunction for use in Python?
For text and images v13 introduces the ability to train detectors easy which result in ContentDetectorFunction's. To use these IRL we need to export to python's ...
- 31.8k
35
votes
4
answers
1k
views
How to make a custom NN layer in Mathematica?
Is there a way to create our own custom layers for Neural Networks in Mathematica ? I suspect it should be possible, any pointers or directions on how to go about it?
I am interested in ...
- 401
4
votes
1
answer
110
views
Does RandomArrayLayer implement the reparameterization trick?
I want to backpropagate through random operations (e.g. learn the mean and variance of a Gaussian random variable). I assumed that
...
- 101
3
votes
0
answers
184
views
Can Mathematica's Minimize() function be called inside Python code using Python data?
Summary:
I would like to use the Wolfram Client Library for Python to invoke Mathematica's Minimize function directly from within Python, passing to it Python data structures.
Details:
I have a Python ...
- 31
4
votes
1
answer
220
views
How to add doodles and sketches in a mandala
i discovered mathematica yesterday; and i've been playing with RandomMandala since.
i also saw this question; and i really liked the second answer; but i like the ...
22
votes
5
answers
4k
views
Recurrent neural network in 11.1 explicit examples?
I heard that RNN was implemented in Mathematica as of 11.1. Trying to search online, I find some general information about neural networks in Mathematica, or a list of related functions. My trouble is ...
- 12.1k
6
votes
1
answer
221
views
Introductory material on machine learning?
Does Mathematica have a handbook or other introductory material on machine learning? Or are there any books on analyzing machine learning with Mathematica?
- 61
6
votes
1
answer
188
views
Unexpected high memory consumption using out-of-core NetTrain
I'm working on training a neural network on an image dataset. There are 14k images and each image contains 3x150x150 pixels. I have built a generator function following the approach in Training on ...
- 544
4
votes
0
answers
127
views
General hyperparameter searching?
I typically use naive random or grid search to choose them, but I'd like to ask if there are built-in or paclet-based methods that can help perform more principled general hyperparameter searches?
For ...
- 3,820
9
votes
1
answer
3k
views
Fashion segmentation with a neural net?
I would like to train a network that can parse clothing:
Does anyone know of a fashion segmentation network with or without pre-trained weights available that I can use in Mathematica?
Update:
I ...
- 31.8k
1
vote
1
answer
233
views
How to predict the future by machine learning past data?
The following is 1,094 days (Length@btcData) of Bitcoin prices. Among them, data for the first 985 days (Length@btctrain) were used for training, and data for the last 109 days (Length@btctest) were ...
- 1,768
4
votes
1
answer
62
views
"MoleculeFeatures" in FeatureExtractor
"MoleculeFeatures" is one possible Feature Extractor method. What molecule properties does "MoleculeFeatures" entail?
- 43
14
votes
3
answers
605
views
Importing a grid of numbers from an image (sudoku like)
Can anyone see a way to import a grid of numbers from
http://www.mit.edu/~puzzle/2019/puzzle/lantern_festival.html
into Mathematica? TextRecognize doesn't seem ...
- 6,697
4
votes
1
answer
369
views
How can I free GPU memory allocated with NetTrain
When I train a neural network with NetTrain[..., TargetDevice->"GPU"], wolfram's neural network code automatically allocates memory on my GPU for my ...
- 1,078
3
votes
0
answers
146
views
Implementation of Restricted Boltzmann Machines?
A Restricted Boltzmann Machine is a classical and basic neural net method in Pattern Recognition and Machine Learning.
We can easily find implementation in Matlab or Python, but are there any ...
- 8,649
1
vote
0
answers
43
views
Why Spectral Method and GaussianMixture in FindClusters and ClusteringComponents can't set the number of Clusters?
There is an official example, that we can set clusters number.
However, when I set the number to run the example, funny thing happens.
The same problem in ...
- 8,649
20
votes
4
answers
1k
views
How to use Mathematica to train a network Using out of core classification?
I see there is doc about how to train a network Using out of core image classification and this question.But the object is only image.
I want to use a binary file as data(Sequence to Sequence case),...
- 6,866
4
votes
1
answer
338
views
Constructing neural networks from Keras example
I am trying to convert neural networks from a book to Wolfram language. The book has this example with the quote
two layers of 10 neurons and a dropout of 0.2 for each
...
- 739
20
votes
2
answers
1k
views
Training Neural Networks on Cloud GPUs (Wolfram Cloud / AWS / Paperspace /etc)
I have spent a lot of time lately training neural networks. However, my poor laptop has only an AMD GPU, so I am stuck training these networks on the CPU. That means I get to train networks over ...
- 13.2k
3
votes
1
answer
211
views
Reuse same layer of Neural Network
I hope to wrap up ConvolutionLayer in a way so that it takes two inputs, does the same operation on those, and outputs their result respectively. For example, ...
- 2,031
5
votes
0
answers
142
views
Derivation from a network
how can I represent the derivative of a network (e.g. NetGraph or NetChain) as a network? I have tried it with FunctionLayer[] and NetPortGradient, but without success.
I would be very pleased to ...
- 91
7
votes
1
answer
127
views
How to calculate a PDF of a neural network output?
I have to find the probability density function of the output of an internal layer in a neural network.
I wanted to do it using NetMeasurements adding a layer like
<...
- 215
1
vote
0
answers
33
views
Differentiating matrix function in `Table` from
I am trying to get an analytical expression for derivaives of an algorithm explained here.
I usually use automatic diff. a lot, but since this part of function will not change, I thought to implement ...
- 111