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Questions about machine learning functionality of Mathematica, for instance involving, but not restricted to, Predict, Classify, FindClusters and the various regression functions.

3
votes
1answer
42 views

How to use FastText embeddings in a NetGraph?

Does Mathematica 11 have access with either the Wikipedia or CommonCrawl FastText embeddings? Maybe this is built-in through the Neural Net Repository or available through a ...
0
votes
0answers
31 views

Using machine learning to find correlation between data

I've taken several months worth of data on health(water intake, activity, steps, sleep quality, heart rate, etc.) and I would like to use Mathematica to find correlations within the data. I would like ...
2
votes
1answer
42 views

Crashes of Classify function

I'm working on a classifying two classes. I am training my Classify function with the RandomForest method, but it crashes. The ...
2
votes
0answers
37 views

Capsule Network reconstruction layer

I am experimenting the capsule network, using the architecture provided here: Capsule Network in Mathematica Deep Neural Network Repository While I can figure out what the network do following the ...
4
votes
1answer
38 views

ClusteringComponent and FindClusters are returning the wrong number of clusters and are inconsistent

I am trying to find the optimum number of clusters in a correlation matrix. To do this I run a clustering algorithm that loops through 3 variables ( number of clusters, ...
6
votes
2answers
103 views

How to Classify with LogisticRegression with a non linear border?

I am currently taking the Coursera Machine Learning course and want to reproduce some of the coding exercises in Mathematica. In Exercise 2 the problem is to Classify with Logistic Regression. So I ...
4
votes
1answer
47 views

Kernel shut down when use FindFaces with LBP Cascades

I found Mathematica can use OpenCV to improve face recognition in FindFaces: how to improve the results of the face recognition feature. But I tried this way and the kernel crashed. ...
2
votes
0answers
56 views

Implementing Mathematica Machine Learning Algorithm in an HTML-Web Page

I have a Mathematica Neural Network developed in Mathematica 11.2 that I'd like to upload and use on my website. The algorithm takes in images as an input. My website is built with HTML-CSS and Flask. ...
2
votes
1answer
27 views

How does NetDecoder for Tokens work?

I'm trying to understand why I can decode encoded word tokens? ...
9
votes
1answer
107 views

NetTrain an image caption generator

I would like to write out the simplest possible word-by-word image caption generator. This network should take an image and build a sentence describing it. Here is my fashion dataset of images and ...
9
votes
0answers
142 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 ...
7
votes
2answers
78 views

How to inspect the learned ClassifierFunction decision tree model?

Assume I have a ClassifierFunction object learned like this: classifier = Classify[trainSet, Method -> "DecisionTree"] ...
3
votes
1answer
64 views

How to modify NetTrain's error calculation

I'm training a neural network at the moment on an image segmentation problem (that is, I have an images and masks, and I am trying to train the network to generate its own masks from other images. I'...
0
votes
0answers
25 views

How to do surgery on FeatureExtraction on text?

I have a text data, which is a list of different sentences. I used below for example:- ...
8
votes
0answers
207 views

How to perform UMAP dimensionality reduction?

This new method UMAP looks to be better than TSNE, unfortunately it is not available as a dimension reduction method yet: Does anyone know if there exists an implementation of it in, or accessible ...
7
votes
1answer
221 views

How to recreate this 3D plot?

In other languages, one can make a FeaturePlot3D-esque graphics where the inset images look realistically three dimensional. Meaning that they are smaller when farther away (and also hazier). So how ...
1
vote
0answers
27 views

How to ask FindClusters to return the loss function value in the output?

I have some data points pts as below:- pts = BlockRandom[SeedRandom[123]; RandomReal[1, {100, 2}]]; Now I want to separate ...
0
votes
0answers
25 views

How to change the formulae of FeatureExtraction?

I have a feature extraction function fe, which gives me n/0.816497 as the output of fe[{1}]:- ...
7
votes
1answer
322 views

Why is SVM unable to separate linearly separable data?

I have two sets of data, namely blue and yellow. I manually added a point {8, -3} to the blue data. ...
3
votes
1answer
79 views

How to reconstruct the result of FeatureExtraction?

For the below code for Mathematica 11.3, I got {-0.153792, 1., 1.} as output. ...
0
votes
1answer
76 views

Problem of Low Accuracy of NeuralNetwork Method in Classify MNIST 11.3

The accuracy is extremely low... even after changing a lot of options of Method... Other methods' result is fine and normal, 0.80 accuracy like LogisticRegression. ...
4
votes
0answers
85 views

Value for output of layer is inconsistent (implementing SqueezeUNET from Keras)

I'm attempting to implement this neural network in WL: https://github.com/lhelontra/squeeze-unet/blob/master/squeezeunet.py which is a variant of the SqueezeNet network that does image segmentation. ...
2
votes
0answers
52 views

Why is the output of the Embedding layer so non-linear?

I have 2 nets, i.e. net1 (i.e. LinearLayer) and net2 (i.e. ...
2
votes
1answer
94 views

How to generate a training set in an automatic way?

This question is related to my previous item where arithmetic with machine learning was considered. The results of the Predict command were not good because of a ...
2
votes
1answer
53 views

Custom NetEncoder

I've been trying to train an RNN on some data that I pre-processed externally and saved to disk. My dataset is too large to fit in memory and is additionally varying in shape. Looking for a way to do ...
1
vote
0answers
66 views

Why Method -> “NeuralNetwork” does not work for me? [closed]

Mastering my Machine Learning, I try arithmetic: ...
5
votes
1answer
70 views

Why would a symmetric image have an asymmetric PoolingLayer-Gradient Image?

I have a symmetric image img. For simplicity, I would use the below image as my example: ...
3
votes
0answers
47 views

In neural network, how to force the NetTrain to use full batch gradient descent instead SGD?

In a neural network, I want to use full batch gradient descent instead of SGD. Currently, I am using code like this (you can see that I forced BatchSize to be the ...
5
votes
1answer
67 views

Which, if any, external machine learning libraries are used by Predict[]?

It's pretty much all in the title -- I suspect that Wolfram uses some standard (perhaps open-source) libraries in their machine learning functions, and I am curious as to what they are. I am ...
4
votes
1answer
48 views

How to apply the layer of sigmoid function in neural network?

I saw an article How to build a simple neural network in 9 lines of Python code and want to reconstruct the result in Mathematica. I tried the below codes:- ...
7
votes
1answer
67 views

Regarding Gaussian Process in Predict function

The following code is exactly copied from the documentation on Predict using Gaussian Process. ...
3
votes
1answer
50 views

How to NetTrain only N batches?

I'd like to train a neural network for only a specified number of batches, that is for only part of an epoch (or TrainingRound). I've tried using the ...
4
votes
1answer
61 views

Predict[] Application Timing [closed]

I trained a Predict and when I look at PredictorInformation it says evaluation time is less than 1 millisecond per example. ...
2
votes
1answer
58 views

Extract neural network model from ClassifierFunction

I'm very new to Neural Networks and Mathematica 11 (I used MMA8 some time ago) and I'm trying to learn about NN using Mathematica. I'm using MMA 11.2 in a Rapsberry Pi (yes, I know that doing NN in a ...
2
votes
1answer
83 views

What does NetMapOperator do?

Recently, I have become addicted to Mathematica's support for neural networks. As I learn those commands that are prefixed with "Net", I can't tell the difference between using ...
2
votes
0answers
73 views

Does Mathematica auto update something causes error load old-version model?

I've trained a NN model by NetTrain with Mathematica 11.3.0, and I can load the model correctly to predict. My model is saved by .mx format. After few months, I cann't load the model correctly. ...
5
votes
0answers
56 views

How to make the clustering result of version 11.2 and 11.3 same?

I was doing clustering analysis in version 11.2, with codes like below, and then got 12 clusters as the output: ...
4
votes
1answer
97 views

Deep Learning SummationLayer does not support varying dimensions on Linux server

I am trying a recurrent network in Linux server using MMA 11.3. The network structure is as follows: ...
4
votes
0answers
91 views

How to explain overfitting?

SeedRandom[0]; X = RandomInteger[{1, 5000}, {100000, 50}]; Y = RandomInteger[{0, 1}, 100000]; For net1 and ...
1
vote
1answer
39 views

How can I see the predictor function that Mathematica produces?

I am trying some basic machine learning with Mathematica. I am wondering if I can see the function that Mathematica produces for a training set. I give the following example: trainingset = {1 -> 1.3, ...
1
vote
0answers
41 views

Measurement of properties of custom classifying algorithm

I am interested in measuring my classifier algorithm. Therefore I look for something similar to ClassifierMeasurements, where I can put my predictions result and ...
5
votes
1answer
86 views

How to cluster a set of images?

I have a set of images (imgset) as Clearly, the classification list should be ...
1
vote
1answer
57 views

Issue fine-tuning a simple embedding network

I'm trying to learn an embedding on Cifar-10 by finetuning ResNet-50 with a few added layers: ...
3
votes
1answer
143 views

Detecting a pattern in a time series with a Neural Network

I new to working with Neural Networks and I want to detect a pattern in a time series and return some measure of the certainty/uncertainty when a pattern has been detected: ...
3
votes
1answer
78 views

How can I reproduce the result of AgeEstimation model in MXNet-Python?

How can I reproduce the result of AgeEstimation model in MXNet-Python? here is my repo about MXnet-Python codes to load Mathematica Models. I found in this codes, AgeEstimation is very challenging. ...
3
votes
0answers
221 views

Train your own CycleGAN style translator

I have a set of images (a few hundred) that represent a certain style and I would like to train an unpaired image to image translator with CycleGAN. I'm looking for a tutorial on how one would do ...
4
votes
0answers
82 views

YOLOv3 Netmodel?

I see that YOLOv2 is on the Wolfram net repo, but has anyone ported the new YOLO version 3 architecture into Mathematica?
8
votes
1answer
178 views

Dilation on 3D Images?

I need to apply a dilated convolution to a 3D image, but dilation values greater than 1 are not currently supported in v11.3: ...
3
votes
0answers
65 views

Can someone help me to understand sequence-to-sequence transformation using (Wolfram-specific) recurrent neural nets?

I've been learning about recurrent neural networks lately and I think I'm starting to get the basic idea of how they work. I'm particularly interested in the sequence transformation capabilities of ...
2
votes
0answers
178 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 ...