Questions tagged [gaussian-mixture-model]
35 questions
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How to calculate the Fisher information matrix in Gaussian Mixture model with R
For the Gaussian Mixture model with k components:
Fisher information matrix is given by,
How do I calculate the Fisher Information Matrix? Is there an R function available for this calculation?
Débora
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sketching a Gaussian Mixture plot
So basically I have these points and weights and covariance matrices and 1st mean=x1 and 2nd mean=x2.
What I am trying to do is to plot the clusters of that Gaussian distribution with ellipses around the clusters, but for some reason I think the…
Martim Correia
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combine gaussian mixture models
I'd like to combine gaussian mixture models (GMMs) without using the underlying input values for the models (because I don't want to save all the values).
I had two ideas:
Get weights, means and covariances from both GMMs, combine them (and weight…
Jawis
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How to fit multiple gaussians on one plot?
I'm interested in fitting multiple Gaussian curves to the plot below in python. I need to be able to determine the mean of each gaussian to be able to estimate what 1 photoelectron corresponds to for a signal reading device that took this data. I…
junoswrld
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How to use Gaussian Mixture Model (GMM) for peak decomposition?
I have generated some data points as a linear mixture of three 1D bell shape Gaussian distributions with different parameters (mean and variance) using following code:
import matplotlib.pyplot as plt
import numpy as np
from scipy import stats
import…
Davood Mirian
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1
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1 answer
Parametric estimation of a Gaussian Mixture Model
I am trying to train a model to estimate a GMM. However, the means of the GMM are calculated each time based on a mean_placement parameter. I am following the solution provided here, I'll copy and paste the original code:
import numpy as np
import…
Saam
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Is there a way to sample from a value range in a GuassianMixture Model in python
I am using the sklearn GaussianMixture library. I got my GMM which is working fine, now I would like to sample from it. According to the docs I can use the model.sample(n) function to get n samples. This works, however I would like to sample, based…
Stefan 44
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How to implement gaussian mixture models to classify each image pixel as one of the ROYGBIV colors?
Goal: implement gaussian mixture models (GMMs) to classify each image pixel as one of the ROYGBIV colors by replicating the steps described in this project: https://github.com/srane96/Underwater-Buoy-Detection-Using-Gaussian-Mixture-Models
I am new…
bananaf
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Is there a way to calculate standard deviation and median for the models fitted using sklearn.mixture.GaussianMixture
There is a method to return means of all the guassian components generated but I couldn't find any to get the standard deviations and the means.
Also, the means do not have any error component associated to them.
from scipy.stats import…
darthV
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Python Pandas: How to determine a 'cycle' as well as its peaks
Using the following snippet from my data below:
Data =…
SeanK22
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Difference between number of states and number of mixtures in Gaussian Mixture Model?
I am using the GMMHMM library and I can not figure out the difference between
n_components : Number of states in the model.
n_mix : Number of states in the GMM.
Ammar N. Abbas
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Fitting a Gaussian Mixture Model with known share of noise/outliers
Question was moved to stats.stackexchange
A Gaussian Mixture model is fitted by the Expectation-Maximization algorithm.
This fairly simple algorithm consists of two steps and the initialization.
Initialization (for k=2 Gaussians)
Find (or guess) an…
Klops
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Troubleshooting SkLearn's Gaussian Mixture for clustering straight lines
I'm learning Scikit Learn on Python, but I have problems in clustering data in straight lines. I am using the datasauRus dozen dataset.
import pandas as pd
import numpy as np
import matplotlib.pyplot as plt
from sklearn.mixture import…
Lory1502
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Generating means from bivariate gaussian distribution
I am reading the book "The elements of statistical learning" Ch 2 and on page 16 there is this line - 'First we generate 10 means m_k from a bivariate gaussian distribution N((1,0),I) and labelled BLUE. Similarly, 10 more were drawn from N((0,1),I)…
Meetali
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Finding Gaussian Mixture Model parameters of colored clusters in pointcloud
I am trying to find the Gaussian Mixture Model parameters of each colored cluster in the pointcloud shown below. I understand I can print out the GMM means and covariances of each cluster in the pointcloud, but when I visualize it, the clusters each…
hunterlineage
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