เปรียบเทียบวิธี

	HDBSCAN (การจัดกลุ่มตามความหนาแน่นแบบลำดับชั้น)	Online K-means
สาขาวิชา	การเรียนรู้ของเครื่อง	การเรียนรู้ของเครื่อง
ตระกูล	Machine learning	Machine learning
ปีกำเนิด	2013	1967 (online update rule); 2010 (mini-batch variant)
ผู้ริเริ่ม	Campello, R. J. G. B.; Moulavi, D.; Sander, J.	MacQueen, J. (batch); Sculley, D. (mini-batch web-scale variant)
ประเภท	Hierarchical density-based clustering	Unsupervised clustering (online/streaming)
แหล่งต้นตำรับ	Campello, R. J. G. B., Moulavi, D., & Sander, J. (2013). Density-Based Clustering Based on Hierarchical Density Estimates. In J. Pei et al. (Eds.), Advances in Knowledge Discovery and Data Mining. PAKDD 2013. Lecture Notes in Computer Science, vol. 7819 (pp. 160–172). Springer, Berlin, Heidelberg.	MacQueen, J. (1967). Some methods for classification and analysis of multivariate observations. In Proceedings of the Fifth Berkeley Symposium on Mathematical Statistics and Probability, Vol. 1, pp. 281–297. University of California Press.
ชื่อเรียกอื่น	HDBSCAN, Hierarchical DBSCAN, hierarchical density-based clustering, HDBSCAN*	sequential k-means, streaming k-means, incremental k-means, online clustering
ที่เกี่ยวข้อง	3	4
สรุป	HDBSCAN (Hierarchical Density-Based Spatial Clustering of Applications with Noise) is a density-based clustering algorithm introduced by Campello, Moulavi, and Sander in 2013. It extends DBSCAN by building a full hierarchy of density-based clusters across all density scales and then extracting a stable flat partition, making it robust to datasets where cluster densities vary substantially across regions.	Online K-means is a streaming variant of the classical K-means algorithm that updates cluster centroids one observation at a time — or in small mini-batches — without storing the entire dataset in memory. It is particularly suited to large-scale, real-time, or continuously arriving data where batch recomputation would be too slow or impractical.