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Approximating Higher-Order Distances Using Random Projections
Proceedings of the 26th Conference on Uncertainty in Artificial Intelligence, PMLR R8:319-328, 2010.
Abstract
We provide a simple method and relevant theo- retical analysis for efficiently estimating higher- order lp distances. While the analysis mainly fo- cuses on l4, our methodology extends naturally to p = 6, 8, 10..., (i.e., when p is even). Distance-based methods are popular in machine learning. In large-scale applications, storing, computing, and retrieving the distances can be both space and time prohibitive. Efficient algo- rithms exist for estimating lp distances if 0 < p $\leq$2. The task for p > 2 is known to be dif- ficult. Our work partially fills this gap.