While running the Expectation-Maximization algorithm in GMM, what is the purpose of the Expectation step? To terminate the algorithm if convergence is reachedTo update the Gaussian parametersTo calculate the probabilities of data points belonging to each clusterTo assign data points to the nearest cluster
Question
While running the Expectation-Maximization algorithm in GMM, what is the purpose of the Expectation step? To terminate the algorithm if convergence is reachedTo update the Gaussian parametersTo calculate the probabilities of data points belonging to each clusterTo assign data points to the nearest cluster
Solution
The purpose of the Expectation step in the Expectation-Maximization algorithm in Gaussian Mixture Models (GMM) is to calculate the probabilities of data points belonging to each cluster. This step is also known as the E-step. During this step, the algorithm estimates the probability that each data point belongs to a particular cluster given the current parameters (means, variances, and mixing coefficients). These probabilities are also known as the responsibilities of the clusters for the data points.
Similar Questions
What purpose does the Expectation-Maximisation (EM) algorithm serve in the Gaussian Mixture Model (GMM)?Updating the Gaussian parameters to best fit the data.Calculating the probability density function of the data.Initialising the parameters of the Gaussian components.Assigning data points to clusters based on their likelihood.
True or false: The Expectation Maximisation (EM) algorithm in a Gaussian mixture model (GMM) is employed not only to derive the maximum likelihood estimates of the model parameters but also to ascertain the number of clusters that maximise the data likelihood.TrueFalse
When starting the GMM algorithm, how are the initial Gaussian parameters chosen? By manual selection RandomlyBy using k-means clustering results By sorting the data
What is a primary advantage of using Gaussian mixture models (GMMs) for clustering?They require fewer computational resources compared to other methods.They are simpler to implement than other clustering algorithms.They can model clusters with different shapes and sizes.They always produce spherical clusters.
What is the main goal of the EM algorithm?Select one:a.To maximize the prediction accuracy of the modelb.To minimize the cost or loss function of a modelc.To minimize the error between the predicted and actual values of the datad.To maximize the likelihood of a model given the data
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