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ICC
2007
IEEE
104views Communications» more  ICC 2007»
14 years 4 months ago
Joint Design of Tx-Rx Beamformers in MIMO Downlink Channel
We consider a single-cell multiple-input multiple-output (MIMO) downlink channel where linear transmission and reception strategy is employed. The base station (BS) transmitter is...
Marian Codreanu, Antti Tölli, Markku J. Juntt...
VVS
1998
IEEE
106views Visualization» more  VVS 1998»
14 years 2 months ago
An Exact Interactive Time Visibility Ordering Algorithm for Polyhedral Cell Complexes
A visibility ordering of a set of objects, from a given viewpoint, is a total order on the objects such that if object a obstructs object b, then b precedes a in the ordering. Suc...
Cláudio T. Silva, Joseph S. B. Mitchell, Pe...
SPAA
1996
ACM
14 years 2 months ago
Constant Time per Edge is Optimal on Rooted Tree Networks
We analyze the relationship between the expected packet delay in rooted tree networks and the distribution of time needed for a packet to cross an edge using convexity-based stoch...
Michael Mitzenmacher
MM
2010
ACM
169views Multimedia» more  MM 2010»
13 years 10 months ago
CO3 for ultra-fast and accurate interactive segmentation
This paper presents an interactive image segmentation framework which is ultra-fast and accurate. Our framework, termed "CO3", consists of three components: COupled repr...
Yibiao Zhao, Song Chun Zhu, Siwei Luo
JMLR
2008
230views more  JMLR 2008»
13 years 10 months ago
Exponentiated Gradient Algorithms for Conditional Random Fields and Max-Margin Markov Networks
Log-linear and maximum-margin models are two commonly-used methods in supervised machine learning, and are frequently used in structured prediction problems. Efficient learning of...
Michael Collins, Amir Globerson, Terry Koo, Xavier...