All Questions
Tagged with machine-learning or machine-learning
682 questions
7
votes
1
answer
156
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 ...
- 4,895
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
1
vote
0
answers
83
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 ...
- 547
3
votes
1
answer
654
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 ...
- 191
3
votes
1
answer
643
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 ...
- 1,447
7
votes
1
answer
982
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 ...
- 9,751
0
votes
2
answers
122
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:
...
- 1,892
0
votes
1
answer
63
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?
...
- 1,892
11
votes
1
answer
723
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 ...
- 4,758
4
votes
1
answer
152
views
Generating "fake persons" with Mathematica?
Similar to this site, does Wolfram have some capacity to generate "fake humans" (for a cool demonstration)?
- 3,175
5
votes
0
answers
292
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-...
- 406
1
vote
0
answers
117
views
0
votes
1
answer
114
views
Transform function {a,b} ->{x,y} ; how to?
I have a 2D list of values that I want to transform/calibrate to another 2D list. I thought of using a predict function but I couldn’t get it to output 2 values.
—...
2
votes
1
answer
155
views
Mathematica classify NeuralNetwork default parameters
We have trained a Neural Network on Mathemetica classify with one hidden layer and received good classification results. We would like to know the default parameters beside it has one hidden layer? ...
- 21
2
votes
0
answers
246
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 ...
- 21
3
votes
0
answers
64
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 ...
- 3,674
1
vote
0
answers
152
views
Is there a way to predict permutations that consist of sets?
SequencePredict is a function that predicts the next value from the arranged data.
But I want to use the data for the combination to predict the next combination(...
- 1,768
4
votes
0
answers
124
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 ...
- 31.8k
2
votes
1
answer
356
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 ...
- 453
1
vote
0
answers
53
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 ...
- 21
5
votes
0
answers
105
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,...
- 5,693
9
votes
1
answer
1k
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 ...
- 31.8k
1
vote
1
answer
109
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" (...
- 5,623
2
votes
1
answer
100
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 ...
- 75
2
votes
1
answer
74
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 "...
- 3,674
4
votes
1
answer
226
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 ...
- 3,674
5
votes
1
answer
1k
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 ...
- 3,820
1
vote
0
answers
55
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 <...
- 684
0
votes
0
answers
130
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 ...
- 3,820
7
votes
0
answers
331
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 ...
- 913
6
votes
0
answers
118
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 ...
- 61
5
votes
1
answer
289
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.
<...
- 75
6
votes
1
answer
1k
views
How do I create & train a neural net to predict a stock closing price at T+5min using OHLC and other data?
I'm trying to create a neural network and train it to test predictability of short term stock price movements.
I've collated a 1-min open, high, low, closing and volume dataset for a particular stock....
2
votes
0
answers
123
views
LearnDistribution Vs FindDistribution?
How would you explain the difference between the new LearnDistribution function and the FindDistribution function? or perhaps the overall ML vs Find framework.
I would think for a sample size of 1000 ...
- 71
0
votes
1
answer
73
views
How can import more files simultaneously and clean them in Mathematica?
I would like to import three files in Mathematica (I am using the Import function[]) and try to clean them.
I used
...
- 177
2
votes
0
answers
270
views
Hessian of a loss function for a neural netwrok
Is a way to calculate the Hessian of the loss function in Mathematica. It's easy to define a loss function for neural nets but I couldn't figure out how to calculate the Hessian(more precisely I ...
- 727
1
vote
0
answers
175
views
Loss function for an unsupervised neural network
I am trying to use a neural network approach to fit a model based on two sets of data: the "before" set and the "after" set. The "after" set is the subset of "before" examples that have survived to a ...
- 11
2
votes
2
answers
148
views
Find Probability that Image Is Text
I can find out whether an image is text:
ImageInstanceQ[img,Entity["Concept", "TextualMatter::m7642"]]
And if an image is most likely text, I can find out the ...
- 3,674
8
votes
1
answer
215
views
3
votes
1
answer
154
views
How to create model for classification using SVM methods?
I have a matrix for diseases associated to their symptoms, the columns represent symptoms each row is a disease. the labels 1 and 0 in the matrix data sets represent when a disease i related to ...
- 155
6
votes
0
answers
170
views
Export ImageCases to Python?
I’d like a tutorial on how to export a bounding box detector network to mxnet, (for bonus points: convert to Tensorflow), and then get it running correctly in python!
Some related questions exist for ...
- 31.8k
4
votes
2
answers
473
views
Classifier training on a large data set
I am interested in binary classification and I have a huge set of training examples (around 4 millions). Each example is a $10 \times 2$ matrix. When I run the classification after two hour run the ...
- 2,019
2
votes
0
answers
111
views
Concise way to set input directory
Got this Mathematica ResNet- 50 Code online and has been trying to make run it using the same data set but it seems my directories to the dataset were not correct, keep getting this error:
...
2
votes
1
answer
78
views
Confusion about Predict Model NameAge
Predict["NameAge", "Claire"]
8
distribution = Predict["NameAge", "Claire", "Distribution"]
dataRaw = distribution[[2]]
<...
- 8,649
5
votes
0
answers
161
views
Reverse Engineering of MMA `Classify[]` Output?
Update: as @AntonAntoniv rightly noticed in his comment the case of DecisionTree is already discussed. Now it would be great to also have an equivalent answer for LogisticRegression.
MMA is really ...
- 2,493
4
votes
1
answer
236
views
2
votes
2
answers
235
views
Setting the number of neighbors in NearestNeighbors algorithm
I am using Machine learning in Mathematica 11 for a specific set of data. When I use
p=Predict[data]
I get the output model by method of NearestNeighbors, which ...
3
votes
1
answer
270
views
UtilityFunction for actual and predicted values (machine learning)
In machine learning, the utility function for a classifier assigns the utility value to an actual value v(act) and a predicted value v(pred), typically e.g. in form of
...
- 446
1
vote
1
answer
120
views
How do I apply a NetChain element-wise during training?
I need to train a Neural network that models a function that takes a single real number, and outputs a real number.
x -> y = f[x]
However, in the training data, each data point doesn't link a single ...
- 526
4
votes
1
answer
198
views
Reccurent neural network
I watched the this video on YouTube and copied the code. Why it does not work in M12? I mean net[inData] and ...
- 10.9k