Gaussian-Mixture-Models | Gaussian Mixture Model and Gaussian Mixture Regression | Machine Learning library
kandi X-RAY | Gaussian-Mixture-Models Summary
kandi X-RAY | Gaussian-Mixture-Models Summary
Gaussian Mixture Model (GMM) and Gaussian Mixture Regression (GMR) implemented purely on numpy
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Top functions reviewed by kandi - BETA
- Implementation of GMR
- Computes the Gaussian probability of the Gaussian distribution
- Emulate the EM algorithm
Gaussian-Mixture-Models Key Features
Gaussian-Mixture-Models Examples and Code Snippets
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Trending Discussions on Gaussian-Mixture-Models
QUESTION
I have implemented EM algorithm for GMM using this post GMMs and Maximum Likelihood Optimization Using NumPy unsuccessfully as follows:
...ANSWER
Answered 2020-Aug-19 at 07:29As I mentioned in the comment, the critical point that I see is the means
initialization. Following the default implementation of sklearn Gaussian Mixture, instead of random initialization, I switched to KMeans.
QUESTION
I am attempting to do automatic image segmentation of the different regions of a 2D MR image based on pixel intensity values. The first step is implementing a Gaussian Mixture Model on the image's histogram.
I need to plot the resulting gaussian obtained from the score_samples
method onto the histogram. I have tried following the code in the answer to (Understanding Gaussian Mixture Models).
However, the resulting gaussian fails to match the histogram at all. How do I get the gaussian to match the histogram?
...ANSWER
Answered 2017-Aug-22 at 18:23The issue was with passing the histogram rather than the array of pixel intensities to GaussianMixture.fit gmm = gmm.fit(hist)
.
I also found that a minimum of n_components = 6
is needed to visually fit this particular histogram.
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