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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How to cluster by having overlaps?
I have a set of points and I can use the built-in command FindCluster[] to perform its clustering into the desired number of clusters as follows:
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- 1,817
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Why does ridiculous error information appear in Classify with Method GradientBoostedTrees?
The data could be classified correctly by method like LogisticRegression, NearestNeigbors.
The dataset is quiet simple, ...
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FeatureSpacePlot output differs in documentation vs. a notebook
I was exploring this first example of FeatureSpacePlot and it shows some strange behavior. On the left is the documentation window and to the right is the notebook. ...
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How to extract images from Information?
class = Classify[
ExampleData[{"MachineLearning", "UCILetter"}, "Data"]]
Information@class
I have queried the Information function, ...
- 1,402
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Creating an If function for the probabilities of the classes of images after using NetTrain
So I have 3 Classes the model can output after veiwing an image, at the moment it has a 70% accuracy, however this is not an issue as the plan is unless it's 85%+ sure on the Probability of the class ...
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34
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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 ...
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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 ...
- 1,648
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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?
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Predict with Deep Learning in Mathematica
I have two series of number (Tmax,Tmin) and my target is (ET). I want modeling this and I have one code for this operation but this code is not very acceptable. Can you help me to improve or use an ...
- 159
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61
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How to use NetChain to obtain a fit that is at least accurate on the training data
How do I use NetChain to obtain a fit that is at least accurate on the training data?
I am trying to get a hopefully predictive fit for some data (see my question ...
- 4,197
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Using AI to get the geographic locations of a list of banks
I have a list of banks from Bloomberg, and am looking to locate them on the world map,
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Evaluating a questionnaire from image
I want to evaluate a questionnaire made at school. The survey is made on paper and I will scan it. So I have an image with all the questions (44 questions). What I am looking for is which number was ...
- 1,434
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197
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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 ...
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161
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Does Mathematica have a LogSumExp function that's numerically stable?
I searched "Mathematica LogSumExp", and literally nothing is coming up. It's a relatively important function in machine learning and for numerically stable computation. Will I just have to ...
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How to identify and select the first name from a string containing a first name and a last name?
Is it possible to identify and select the first name in a string that is made up of a first name and a last name, e.g.:
...
- 436
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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 ...
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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 ...
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Prediction Algorithm [closed]
Trying to identify what algorythm I need to use to predict a battery full time (100%), based on historic data (charge rate is variable).
I suspect it's some form of linear regression of a sort, ...
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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
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Generating molecules using a GAN in Mathematica
I have been unable to find any tutorials or examples of creating molecules using a Generative Adversarial Network (GAN) in the Wolfram language. It appears that the Selfies paclet was created to ...
- 739
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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
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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 ...
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Problems loading training Data
I want to load the MINST package for number recognition and I tried this simple code that was supposed to work straightly
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72
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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 ...
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What is that neural network?
I am teaching my comp to add naturals by creating a neural network:
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Mathematica, ML and TensorFlow
I am currently studying a specialization on Coursera in Machine Learning and am investigating various tools to help me out with the maths and with visualisations and so on.
Although I have many ...
- 111
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72
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Performance Problems with Number-Recognizing AI Functions
I created an AI function that recognizes numbers using MNIST.
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- 1,522
3
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184
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Why Mathematica's Classify gives 100% accuracy on FashionMNIST dataset
Tested on Mathematica 13.2
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- 8,557
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43
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Learning extra parameters of RBF Neural Network under the NN framework on high dimension data
It's easy to contruct a basic neural network like MLP and RBF by NetChain
MLP, RBF
My question is how can I obtain different $\Sigma$ and $\mu$ for each neurons, ...
- 8,557
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92
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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 ...
- 8,557
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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 ...
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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 ...
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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
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Error running Classify repeatedly within Manipulate
To create a CDF document, I have to run Classify in Manipulate. However, if the code is executed as follows, Classify continues to run repeatedly. Can it be executed and stopped only once?
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- 1,522
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Text recognition - extracting table of text from image
I want to extract table from the image bellow as a list of strings. I tried the following but it does not work.
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5
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183
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Sort symbols or characters by image complexity
As an example, I would like to sort the following characters by some sort of complexity measure:
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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 ...
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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 ...
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16
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481
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Stable diffusion models in WL?
Are there any diffusion-based (text + image) -> image generation models available in Mathematica, Wolfram Repositories, or from third parties?
In particular, I'm ...
- 31.2k
6
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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 ...
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99
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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 ...
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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 (...
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Which model behind SequencePredictorFunction?
Is the SequencePredictorFunction based on Hidden Markov Model?
If so, how does the model estimate the number of hidden states?
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Unable to Replicate an ANN Using the Output from Predict Function
I’m working on constructing an ANN. I first used the Predict function with the method “Neural Network” to determine the structure according to my data.
This is the given output of the structure:
...
- 21
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FeatureExtraction for TimeSeries giving errors
I'm trying to replicate this example using FeatureExtraction for TimeSeries. However, it's giving errors.
Here's the code I've run:
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Labeling images for TrainImageContentDetector
I want to use TrainImageContentDetector on a directory of ~2k unlabeled images. I'm willing to put in the effort to label them, but I was never good at using "...
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A strategy to create good initial guess for Lorentzian model fit
I was preparing an answer for a question that got deleted, so I will post this anyhow.
Given a set of data with a hump
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How to measure a LearnedDistribution?
I would like to measure the qualities of a LearnedDistribution in general and with regard to test sets. The docs say that it takes an option ValidationSet, but ...
- 3,621