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• W2163217488 abstract "We consider the problem of embedding finite metrics with slack: We seek to produce embeddings with small dimension and distortion while allowing a (small) constant fraction of all distances to be arbitrarily distorted. This definition is motivated by recent research in the networking community, which achieved striking empirical success at embedding Internet latencies with low distortion into low-dimensional Euclidean space, provided that some small slack is allowed. Answering an open question of Kleinberg, Slivkins, and Wexler [in Proceedings of the 45th IEEE Symposium on Foundations of Computer Science, 2004], we show that provable guarantees of this type can in fact be achieved in general: Any finite metric space can be embedded, with constant slack and constant distortion, into constant-dimensional Euclidean space. We then show that there exist stronger embeddings into $ell_1$ which exhibit gracefully degrading distortion: There is a single embedding into $ell_1$ that achieves distortion at most $O(logfrac{1}{epsilon})$ on all but at most-1.5pt an $epsilon$ fraction of distances simultaneously for all $epsilon>0$. We extend this with distortion1pt $O(logfrac{1}{epsilon})^{1/p}$ to maps into general $ell_p$, $pgeq1$, for several classes of metrics, including those with bounded doubling dimension and those arising from the shortest-path metric of a graph with an excluded minor. Finally, we show that many of our constructions are tight and give a general technique to obtain lower bounds for $epsilon$-slack embeddings from lower bounds for low-distortion embeddings." @default.
• W2163217488 created "2016-06-24" @default.
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• W2163217488 date "2009-01-01" @default.
• W2163217488 modified "2023-09-26" @default.
• W2163217488 title "Metric Embeddings with Relaxed Guarantees" @default.
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• W2163217488 doi "https://doi.org/10.1137/060670511" @default.
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