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Answers for “如何在 R 中使用散点图可视化 K-means 簇及其中心?”

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You can visualize K-means clusters by creating a scatter plot of at least two variables, coloring the data points according to their cluster assignment, and adding the cluster centers as large, distinct points.

Conditions: Requires at least two numeric variables for plotting.; Requires cluster assignments and center coordinates from the kmeans output.

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K-means is a popular clustering algorithm used to partition data into distinct, non-overlapping groups. It helps uncover hidden patterns or rethink existing categories.

Conditions: Data must be partitionable into distinct groups.; Groups are non-overlapping.

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You run K-means clustering in R using the kmeans() function. You pass the dataset as the first argument and specify the number of clusters using the centers argument, for example, centers = 3.

Conditions: Requires a numeric dataset.; Requires specifying the number of clusters (centers).

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The object returned by the kmeans function contains a cluster assignment for each data point and the coordinate location of the center of each cluster.