Sciweavers

576 search results - page 62 / 116
» Optimizing Information Agents by Selectively Materializing D...
Sort
View
GECCO
2009
Springer
121views Optimization» more  GECCO 2009»
14 years 24 days ago
Using memetic algorithms to improve portfolio performance in static and dynamic trading scenarios
The Portfolio Optimization problem consists of the selection of a group of assets to a long-term fund in order to minimize the risk and maximize the return of the investment. This...
Claus de Castro Aranha, Hitoshi Iba
ADC
2003
Springer
94views Database» more  ADC 2003»
14 years 1 months ago
Multi-resolution Algorithms for Building Spatial Histograms
Selectivity estimation of queries not only provides useful information to the query processing optimization but also may give users a preview of processing results. In this paper,...
Qing Liu, Yidong Yuan, Xuemin Lin
ICC
2007
IEEE
387views Communications» more  ICC 2007»
14 years 2 months ago
LS Channel Estimation for Mobile OFDM Communications on Time-Varying Frequency-Selective Fading Channels
Abstract— A least-squares (LS) channel estimation (CE) technique for mobile OFDM communications over a rapidly timevarying frequency-selective fading channel is investigated in t...
Jia-Chin Lin
DOCENG
2007
ACM
14 years 3 days ago
Elimination of junk document surrogate candidates through pattern recognition
A surrogate is an object that stands for a document and enables navigation to that document. Hypermedia is often represented with textual surrogates, even though studies have show...
Eunyee Koh, Daniel Caruso, Andruid Kerne, Ricardo ...
ICIP
2000
IEEE
14 years 17 days ago
Switched Error Concealment and Robust Coding Decisions in Scalable Video Coding
This work introduces two complementary techniques to improve the packet loss resilience of scalable video coding systems. First, a “switch per-pixel” error concealment (SPEC) ...
Rui Zhang, Shankar L. Regunathan, Kenneth Rose