Optimal vector quantization in terms of Wasserstein distance
Optimal vector quantization in terms of Wasserstein distance
复制标题
根据 Wasserstein 距离进行最优矢量量化
DOI:
10.1016/j.jmva.2011.04.005
复制
发表时间:
2011
期刊:
影响因子:
--
通讯作者:
W. Kreitmeier
中科院分区:
文献类型:
--
作者:
W. Kreitmeier
The optimal quantizer in memory-size constrained vector quantization induces a quantization error which is equal to a Wasserstein distortion. However, for the optimal (Shannon-) entropy constrained quantization error a proof for a similar identity is still missing. Relying on principal results of the optimal mass transportation theory, we will prove that the optimal quantization error is equal to a Wasserstein distance. Since we will state the quantization problem in a very general setting, our approach includes the Rényi-α-entropy as a complexity constraint, which includes the special case of (Shannon-) entropy constrained (α= 1) and memory-size constrained (α= 0) quantization. Additionally, we will derive for certain distance functions codecell convexity for quantizers with a finite codebook. Using other methods, this regularity in codecell geometry has already been proved earlier by György and Linder (2002, 2003)[11],[12].
登录
查看更多内容
影响因子:
1.2
作者:
C. Lautensack;S. Zuyev
通讯作者:
S. Zuyev
DOI:
--
发表时间:
1997
期刊:
影响因子:
--
作者:
L. Rüschendorf;Ludger Uckelmann
通讯作者:
Ludger Uckelmann
DOI:
--
发表时间:
1998
期刊:
影响因子:
--
作者:
T. Abdellaoui
通讯作者:
T. Abdellaoui
DOI:
10.1109/18.978755
发表时间:
2002
期刊:
IEEE Trans. Inf. Theory
影响因子:
--
作者:
A. György;T. Linder
通讯作者:
T. Linder
影响因子:
0.9
作者:
W. Kreitmeier
通讯作者:
W. Kreitmeier