方法对比

	邓恩指数	戴维斯-布尔丁指数	惯性
领域	模型评估	模型评估	模型评估
方法族	MCDM	MCDM	MCDM
起源年份	1974	1979	1967
提出者	Joseph C. Dunn	David L. Davies, Donald W. Bouldin	Stuart Lloyd, James MacQueen
类型	Cluster quality metric	Cluster quality metric	Clustering quality metric
开创性文献	Dunn, J. C. (1974). Well-separated clusters and optimal fuzzy partitions. Journal of Cybernetics, 4(1), 95-104.	Davies, D. L., & Bouldin, D. W. (1979). A cluster separation measure. IEEE Transactions on Pattern Analysis and Machine Intelligence, 1(2), 224-227.	Lloyd, S. P. (1982). Least squares quantization in PCM. IEEE Transactions on Information Theory, 28(2), 129-137.
别名	Dunn's index, separation coefficient	DBI, Davies Bouldin index	WCSS, within-cluster sum of squares, cluster cohesion
相关	5	5	5
摘要	The Dunn Index, introduced by Joseph C. Dunn in 1974, is a metric that captures cluster quality by measuring the ratio of the minimum between-cluster distance to the maximum within-cluster diameter. Higher values indicate well-separated and compact clusters, with better clustering quality.	The Davies-Bouldin Index, introduced by Davies and Bouldin in 1979, is a metric for evaluating clustering quality based on the average similarity between each cluster and its most similar neighboring cluster. Lower values indicate better clustering, with a minimum of 0 representing perfectly separated, non-overlapping clusters.	Inertia, also called Within-Cluster Sum of Squares (WCSS), is a measure of cluster cohesion that quantifies how tightly points are grouped around their cluster centroids. Lower values indicate more compact, cohesive clusters. Inertia is the primary objective function for k-means clustering and has been a fundamental metric since the method's introduction.