# 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...

mer än 2 år 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...

mer än 2 år 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...

mer än 2 år ago | 0

Submitted

Heart Sound Classifier

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

nästan 4 år ago | 35 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...

ungefär 4 år 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...

ungefär 4 år 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 ...

ungefär 4 år 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...

ungefär 4 år 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 ...

ungefär 4 år 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...

ungefär 4 år 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...

ungefär 4 år 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...

ungefär 4 år 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...

ungefär 4 år 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 ...

ungefär 4 år 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...

mer än 4 år 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...

mer än 4 år 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...

mer än 4 år 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...

mer än 4 år 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...

mer än 4 år 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...

nästan 5 år 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...

nästan 5 år 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...

nästan 5 år 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...

nästan 5 år 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...

nästan 5 år 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 ...

nästan 5 år 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 ...

nästan 5 år 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...

nästan 5 år 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?

nästan 5 år ago | 0