Yinyang K-Means: A Drop-In Replacement of the Classic K-Means with Consistent Speedup

This paper presents Yinyang K-means, a new algorithm for K-means clustering. By clustering the centers in the initial stage, and leveraging efficiently maintained lower and upper bounds between a point and centers, it more effectively avoids unnecessary distance calculations than prior algorithms. It significantly outperforms prior K-means algorithms consistently across all experimented data sets, cluster numbers, and machine configurations. The consistent, superior performance--plus its simplicity, user-control of overheads, and guarantee in producing the same clustering results as the standard K-means--makes Yinyang K-means a drop-in replacement of the classic K-means with an order of magnitude higher performance.