# Bernhard Suhm

### MathWorks

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**Content Feed**

automated feature generation with matlab?

This sounds like a good use case for applying our new AutoML capabilities. Wavelet scattering generates features automatically f...

3 months ago | 0

I want to use Aspentech IP.21 data to hourly perform advanced calculations for losses in cooling. How to best do it?

You can try this Aspen Plus - MATLAB connector that someone posted on File Exchange, but isn't officially supported by MathWorks...

3 months ago | 0

Are GAMs supported by statistics toolbox?

With the recent R2021a release, support for GAM has been added to the Statistics and Machine Learning toolbox. See GAM for class...

4 months ago | 0

Submitted

Heart Sound Classifier

Heart Sound Classification demo as explained in the Machine Learning eBook, but now expanded to demonstrate Wavelet scattering

2 years ago | 119 downloads |

Solved

Find the peak 3n+1 sequence value

A Collatz sequence is the sequence where, for a given number n, the next number in the sequence is either n/2 if the number is e...

2 years ago

Solved

Similar Triangles - find the height of the tree

Given the height, h1, of a power pole, shorter than a tree, a given distance, x2 away, please find h2, height of the tree. Pleas...

2 years ago

Classification learner - identify false prediction indexes

Unfortunately, that isn't supported directly in the Classification Learner. But you can export your trained model to the MATLAB ...

2 years ago | 0

| accepted

Solved

Finding Perfect Squares

Given a vector of numbers, return true if one of the numbers is a square of one of the other numbers. Otherwise return false. E...

2 years ago

Solved

Find all elements less than 0 or greater than 10 and replace them with NaN

Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

2 years ago

Solved

Return the largest number that is adjacent to a zero

This example comes from Steve Eddins' blog: <http://blogs.mathworks.com/steve/2009/05/27/learning-lessons-from-a-one-liner/ Lear...

2 years ago

Solved

Fibonacci sequence

Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

2 years ago

Solved

Select every other element of a vector

Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

2 years ago

Solved

Make a checkerboard matrix

Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Examp...

2 years ago

Solved

Find the sum of all the numbers of the input vector

Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

2 years ago

Principal Component for Shape Analysis.

Per documentation of pca, your "Mode" are " .. the representations of X in the principal component space. Rows of scorecvorrespo...

2 years ago | 0

| accepted

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...

2 years ago | 1

| accepted

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...

2 years ago | 0

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...

2 years ago | 0

Adding a machine learning algorithm

The Learner Apps are targeted at casual users, empowering them to train classification and regression models without writing cod...

2 years ago | 0

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...

2 years ago | 0

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...

2 years ago | 3

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...

2 years ago | 0

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...

2 years ago | 0

| accepted

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...

3 years ago | 0

| accepted

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 ...

3 years ago | 0

| accepted

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 ...

3 years ago | 0

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...

3 years ago | 0

question about k-means clustering metric choice

If you have any further questions, follow up. Otherwise, can you kindly "accept" Walter's answer?

3 years ago | 0