Questions tagged [machine-learning]

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

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3
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0answers
38 views

Clarity on Classify's ClassPriors option

I'm looking for clarity on Classify's ClassPriors option, and I've listed some specific questions below. According to the documentation: ClassPriors is an option ...
2
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1answer
52 views

Using Predict to fill in missing data

I am attempting to use Predict[] to fill in the missing data in the dataset below; ...
9
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1answer
125 views

How to implement BlazeFace?

BlazeFace is a lightweight and well-performing face detector tailored for mobile GPU inference. It runs at a speed of 200-1000+ FPS on flagship devices. How to implement BlazeFace in Mathematica?
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2answers
238 views

Can I use Mathematica to generate candle scents?

I found this blog (which is highly entertaining). It has an interesting post where the author uses the GPT-2 neuro-network with candle scent training data to generate new candle scents. The AI comes ...
4
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75 views

Neural network for a simple game?

I'm taking a class that is based on the Mathematica coding language, and we must do a 6-week final project. I am considering coding a neural network for a simple game like 2048, pacman, snake, etc. ...
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42 views

Is there a way to get the decision trees used by machine learning methods like `RandomForest`?

I was looking at a tutorial of SimFin, a new German-based financial data provider. There is a nice example of machine learning using sklearn in python. The package ...
4
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1answer
61 views

Adding Noise in Neural Net via ElementwiseLayer

I am trying to add noise to a neural net to train a denoising autoencoder. I don't want to pre-calculate the noisy data. Rather, I'd like the noise be applied via a function using the ElementwiseLayer....
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19 views

Training with GPU and tuning parameters with ParallelTable

We intend to train a neural network. It has a hyperparameter, such as the learning rate. We want to compare the training results of different hyperparameters. Our computer has two multi-core CPUs and ...
2
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2answers
82 views

Usage and meaning of “ProbabilityHistogram”

When doing a classification one can determine the ClassifierMeasurements to get Information about the classifier. I now wanted to get a histogram of the computed probabilities for a classifier. Maybe ...
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41 views

Fuzzy Logic and Neural Networks

Is anyone working on building a Fuzzy Logic module that can be used for the output of Neural Networks? Thank You Michel
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132 views

How can I prevent errors with ReplicateLayer[]?

I am trying to build a NetGraph[] that takes input of the form {{0.6},{0.6},...,{0.8},{0.8}} and multiplies the last sequence ...
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0answers
74 views

is the code of this reinforcement learning example correct?

I am trying to learn reinforcement learning from an article on Wolfram.com, and after several days I still cannot quite get everything right. Now I wonder about the correctness of a piece of code ...
2
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1answer
58 views

How can I use ThreadingLayer to perform operations with layers of different dimmensions?

Is there a way that I can achieve subtraction between a scalar and a vector within NetGraph[], similar to what happens when I perform ...
3
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1answer
59 views

Controlling learning rate decay or cyclic learning rate in Mathematica's neural nets

I am using Mathematica's NetTrain[] function for training neural nets. There is a way to set the learning rate (LearningRate and ...
7
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1answer
68 views

Logistic Regression classifier in Versions 12 vs 11.3

There is a mysterious "LogisticRegression" method in MMA, which could be applied as a substitution for missing multinomial logit functionality. In version 11.3 I had the following simple 3-category ...
14
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3answers
371 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 ...
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0answers
29 views

How to run least confident based uncertainty sampling

This is a rather open-ended question. I am currently using Classify to run a Random Forest and I would like use an active learning algorithm on it. The most conducive would be least confident based ...
2
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1answer
101 views

Rounding the output Vector of a Neural Network layer to prepare it for the next layer

I am attempting to Round up the output Vector of a Neural Network layer to prepare it for the next layer Ex. Layer output {.1.,2.2,3.3} and I need it to be a Vector of Integers for the next layer. I ...
3
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1answer
74 views

How can I normalize a dataset relative to data already given previously?

Some scientific libraries, like Scikit-Learn for Python are able to create normalizing/standardizing functions based on data that is previously given. Looking at the documentation for ...
4
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1answer
96 views

How to find similar words from the provided list?

Let's say I have created a list of words that are acceptable in a certain context. list = {...}; Now given a new or some existing word from the list I want to ...
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2answers
84 views

What's wrong with FindFormula after I set the value of x from 100 to 1000?

The first code here. x = 100; list4 = Table[i^2, {i, 3, x}]; list5 = Table[3 i, {i, 3, x}]; Transpose[{list4, list5}] // FindFormula Output: ...
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1answer
56 views

Machine Learning with Manipulate [closed]

My code pops up error, and it take lots of time before Mathematica finish this. What's the problem here? Can anyone improve my code here? ...
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0answers
30 views

CNN model for CIFAR-10?

Does anyone know of a pre-trained model for the CIFAR-10 dataset? I've seen how to get the dataset(s) using various flavors of ResourceData["CIFAR-10"] But I ...
9
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1answer
352 views

Deep learning outperforms in symbolic integration and ODE?

There comes a new paper on arXiv (arXiv 1912.01412, Deep Learning for Symbolic Mathematics by Guillaume Lample, François Charton) claiming that a deep learning model outperforms Mathematica a lot in ...
4
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1answer
115 views

Generating “fake persons” with Mathematica?

Similar to this site, does Wolfram have some capacity to generate "fake humans" (for a cool demonstration)?
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0answers
185 views

Image-based reinforcement learning with neural networks

After seeing that "OpenAIGym" is not exactly supported on Windows and playing around with https://www.wolfram.com/language/12/neural-network-framework/train-an-...
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0answers
20 views

BatchNormalizationLayer instead of data prep

I've trained a neural net to match nx7x5 matrices to nx1 scalars; the n is a number of elements in a sequence. To get a good match I have to do some data prep; basically do a ...
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19 views

NetTrain::invindim3 error msg when train a simple CNN

My data is 1*5*5 matrix with label 0 or 1 like below: {{{1, -1, 0, 0, 0}, {0, 1, -1, 0, 0}, {-2, 3, 3, -2, -2}, {1, 2, 1, -2, -2}, {-1, -1, 0, 1, 1}}} -> 1 ...
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60 views

Re-train a neural network discarding its memory?

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0answers
73 views

How to train custom objects using YOLO in Mathematica?

I want to train few custom object using YOLO V2 architecture but not sure how to do this. I know that with the NetTake and NetReplace, this is achievable. Can someone point out me in the right ...
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0answers
14 views

Best approach to Save the BestValidationRound throughout training

I have a network that I would like to train.I would like at the end of training to be able to have the BestValidationRound, from all training Rounds. I would not want to have ...
3
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0answers
55 views

Net layer that replicates last element

I am trying to design a neural network layer that takes in an array of dimensions n x 100, and produces an array of dimensions ...
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0answers
97 views

How to get features for captioned images?

I have a lots of (image, text) pairs and would like to learn a feature extractor (or maybe a FeatureExtractorFunction) for a combined embedding. It seems that when given a list of these multimodal ...
0
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1answer
99 views

Using a neural net to make predictions

I want to use a neural net to give predictions, but I am not sure where to start. I do know that I don't want to use the high-level Predict function. So what I ...
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0answers
45 views

Can LearnDistribution Train and Generate Images Without Defaulting To 256x256?

In spite of anything I try it seems the ConformImages[] function nested in the LearnDistribution[] function resizes images to 256x256. If I convert an image into its "Data" representation before ...
5
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0answers
89 views

Recognising people from photos

I have a large number (probably 10000) of personal photos taken over the last few years, a good proportion of which contain family members. I'd like to put together a photo book of one family member,...
8
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1answer
396 views

How to find multi-word synonyms?

I’m looking to write a semantic distance function for phrases (5 words or less) that can map multi-word synonyms together. My domain is e-commerce fashion - here are some required examples for a ...
1
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0answers
32 views

Strange result for decision-tree-classifier. Why?

I'm still in touch with DT-Classification and try to understand how the Mathematica algorithms works and what tree is generated (related: click). I just tested the well-known "playing tennis" (...
2
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1answer
56 views

Output of the trained neural network for a set of inputs

Sorry if this was too trivial but I want to get the output of the neural network I trained for the specific inputs that I feed. The notation I often saw was of TrainedNet[inp] kind. But when I use ...
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0answers
115 views

Error Histogram of a Neural Network

Can you plot the error histogram of a trained network (with test, train and validation sets if possible but one would be enough)? Matlab Easily does that for you but I could not find a function that ...
0
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0answers
38 views

Properties of a decision tree generated by a classifier

A question regarding Classify using the method DecisionTree. From this post I learned how to access the structure of the ...
0
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0answers
28 views

Transfer learning with different input size

How to do transfer learning for the input of dimension (64x64x1)using Resnet-50, which has three-channel input (224x224x3)?
2
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1answer
59 views

Chaining NetGraphs

I have two NetGraphs, each with 3 different input ports ("Input","Random1","Random2"), the first with 2 outputs ("Output" and "Loss") and the second with one output "Final_Out". All I want to do is "...
2
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1answer
90 views

Using GPU Computation in LearnDistribution

LearnDistribution has an option for RealNVP, which is directly training a neural network for the distribution. It also has an option for TargetDevice, however, it appears to do nothing. Take the ...
2
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0answers
220 views

How to generate names with a GAN?

I'd like a tutorial for text generation using GANs, specifically for names. I have a list of company names and would like the network to generate novel ones. This is one of the only few examples of ...
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0answers
44 views

ClassifierFunction output dependent on current $ContextPath

I'm trying to use Classify to predict heads in a Mathematica expression from the heads of its arguments, which may be functions whose heads are not on the current <...
0
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0answers
119 views

Use FacialFeatures in Python Web API?

Under the hood, FacialFeatures uses the net-model ResNet-101 Trained on Augmented Casia WebFace Data. I would like to see a tutorial-style answer on how one would ...
7
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0answers
181 views

Use of Mathematica for Machine Learning Course [closed]

I am interested in others' experience using Mathematica for machine learning and bioinformatics course curricula. Let me first say that I have been programming with MMA for almost 10 years now (out ...
6
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0answers
76 views

How can one train a Neural Network in Mathematica such as to recognise and count all occurrences of a certain custom category in an image?

I'm trying to use Mathematica for the following task: (1) Get an aereal view of a certain area in Mongolia (2) Count the number of plots that contain houses, and the number of plots that contain ...
5
votes
1answer
121 views

Error during training neural network: input is not an integer between 1 and 100 although it is

I imported my data from Matlab in matrix form and tried to use it in a neural network as given below but I get the error that says the input is not an integer between 1 and 100 although it is. <...

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