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INFOCOM
2006
IEEE
14 years 2 months ago
The Index Poisoning Attack in P2P File Sharing Systems
— P2P file-sharing systems have indexes, which users search to find locations of desired titles. In the index poisoning attack, the attacker inserts massive numbers of bogus re...
Jian Liang, Naoum Naoumov, Keith W. Ross
GIS
2006
ACM
14 years 9 months ago
Efficient position-independent iconic search using an R-theta index
An iconic image database is a collection of symbolic images where each image is a collection of labeled point features called icons. A method is presented to support fast position...
Charles Ben Cranston, Hanan Samet
ICMCS
2005
IEEE
123views Multimedia» more  ICMCS 2005»
14 years 2 months ago
Fast predictive variable-block-size motion estimation for H.264/AVC
The emerging H.264 advanced video coding (H.264/AVC) standard achieves significant improvement in coding efficiency compared with previous standards such as MPEG-2 and H.263. On...
Zhi Yang, Jiajun Bu, Chun Chen, Xu Li
ACSC
2004
IEEE
14 years 6 days ago
In-Place versus Re-Build versus Re-Merge: Index Maintenance Strategies for Text Retrieval Systems
Indexes are the key technology underpinning efficient text search. A range of algorithms have been developed for fast query evaluation and for index creation, but update algorithm...
Nicholas Lester, Justin Zobel, Hugh E. Williams
ICC
2009
IEEE
105views Communications» more  ICC 2009»
13 years 6 months ago
Reflected Simplex Codebooks for Limited Feedback MIMO Beamforming
This paper proposes Reflected Simplex codebooks for limited feedback beamforming in multiple-input multipleoutput (MIMO) wireless systems. The codebooks are a geometric constructio...
Daniel J. Ryan, Iain B. Collings, Jean-Marc Valin