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Bernhard Suhm


MathWorks

84 total contributions since 2017

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Answered
Principal Component for Shape Analysis.
Per documentation of pca, your "Mode" are " .. the representations of X in the principal component space. Rows of scorecvorrespo...

4 months ago | 0

| accepted

Answered
precision recall curve from Bag of Visual words classifier
You need to systematically vary the threshold (or related parameter) determining whether you accept or reject the detection. You...

4 months ago | 1

| accepted

Answered
Why identical outputs despite different inputs to a machine learning models
Of course it could predict the same category for different kinds of inputs, especially if there aren't a lot of categories... Or...

5 months ago | 0

Answered
Sequentialfs, the squential feature selection function of matlab
You determine which model it uses by how you define the function fun that calculates a criterion based on training and test data...

5 months ago | 0

Answered
Adding a machine learning algorithm
The Learner Apps are targeted at casual users, empowering them to train classification and regression models without writing cod...

6 months ago | 0

Answered
How to check after completing the Image Processing Machine Learning program.
Your code isn't complete - it references custom functions you (or your teacher) defined somewhere else such as trainImageCategor...

9 months ago | 0

Answered
Is it possible to combine two neural networks in MATLAB?
MATLAB has an AdditionLayer that allows you to combine outputs of two separate strands in your deep learning network. With R2018...

9 months ago | 3

Answered
How can I use the PCA function to find the principle components of a variable?
You'll get the loadings for your variables. But think about whether applying PCA this way to your data makes sense. We'll expect...

9 months ago | 0

Answered
Can someone tell me if there is an error in fitcdiscr function?
LDA fits normal distributions with the same covariance. QDA allows different covariances. Fitting normal distributions including...

9 months ago | 0

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Answered
Display bug with confusionchart for percentages summary
Many machine learning related charts will start to show some weird behavior if you try to visualize a lot of classes. If you are...

9 months ago | 0

| accepted

Answered
Long time to process - fit copula model
Sounds like you need to bring some parallelization to bear. If your computer had multiple cores, you could leverage them if you ...

9 months ago | 0

| accepted

Answered
question about determining the correct number of clusters (documentation)
You can use the silhouette plot or evalclusters function to evaluate the quality of your clustering. There's a little more info ...

10 months ago | 0

Answered
Help, how can get result of classification using SVM with csv files ?
Use csvread to read those files into an array or table, train (or "fit") an SVM model on the trainings set using fitcsvm, and th...

10 months ago | 0

Answered
question about k-means clustering metric choice
If you have any further questions, follow up. Otherwise, can you kindly "accept" Walter's answer?

10 months ago | 0

Answered
How can I use random forest classifier with an excel file?
Something like this: data = xlsread('filename'); mdl = fitcensemble(data,'class');

10 months ago | 0

Answered
How Can I Configure "the Trial License" for Cloud Use?
You can't cloud-enable a trial "license". You need to request a cloud-enabled trial, which is just become available at <https://...

10 months ago | 0

Answered
Feature Selection PCA in Haar for face recognition
Well, you could try whether PCA finds a linear mapping among the 16 Haar wavelets that expresses most of the variability in your...

10 months ago | 0

Answered
How to utilize GPU while the classifiers were running on the classification learner application?
<https://www.mathworks.com/help/stats/statistics-and-machine-learning-toolbox-functions-with-gpuarray-arguments.html This page> ...

10 months ago | 1

| accepted

Answered
How to use a KNN classifier from Matlab in c++
Little late, but with MATLAB Coder you can convert a prediction function for KNN to C/C++ code, and then use that with your othe...

10 months ago | 0

Answered
Is there any way to port the predict process of a machine learning model to C/C++ codes
Little late, but since 2017, with MATLAB Coder you can generate C/C++ code for your machine learning prediction function.

10 months ago | 0

Answered
Can I plot/apply more than two predictors using classification learner app?
It's for plotting only, a simple 2-dimensional scatter plot is available in the Classification Learner. You can train classifier...

10 months ago | 0

Submitted


Heart Sound Classifier
Heart Sound Classification demo as explained in the Machine Learning eBook update

10 months ago | 195 downloads |

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Answered
Clustering with big data
Maybe you are using the LINKAGE function incorrectly. You already has the pairwise distances, but for some reason the LINKAGE fu...

12 months ago | 0

| accepted

Answered
Finding Pattern in the data set
You are asking a very basic question, like "tell me how to apply data analytics", which is why the comment pointed you to the mo...

1 year ago | 0

Answered
Machine learning: Ensemble trees in a time series classification problem.
How are you encoding the time dependency in your predictors? If you add predictors that look back fixed number of elements in yo...

1 year ago | 0

Answered
not getting same accuracy as classifier app
The model trained inside the Learner app doesn't exactly match the exported model because the latter will be trained on the comp...

1 year ago | 0

Answered
Is there a way to parallelize the function hygepdf?
I am not an expert for the Parallel Computing toolbox, but if the calculation inside the for loop body is fairly simple (as it l...

1 year ago | 0

Answered
Classification Learner App - generate a more generic function for your model training that could take varying size of prediction tables? One step beyond the default function generation
But if your table has fewer columns (predictors) typically you need to retrain the model, or at least have performance deteriora...

1 year ago | 0

Question


Problems trying to set iOS and get Human Activity Recognition example deployed on iPhone
I'm following the Human Activity Recognition Simulink example in doc in a MacBook. I successfully installed the Simulink support...

1 year ago | 0 answers | 0

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answers

Answered
How can I classify columns of a table
You could try to train a classifier by considering each data point of your table an example for the corresponding column's name ...

1 year ago | 0

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