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MMAS
2010
Springer
15 years 1 months ago
Domain Decomposition Preconditioners for Multiscale Flows in High-Contrast Media
In this paper, we study domain decomposition preconditioners for multiscale flows in high contrast media. Our problems are motivated by porous media applications where low conduct...
Juan Galvis, Yalchin Efendiev
TSP
2010
15 years 1 months ago
A recursive method for the approximation of LTI systems using subband processing
Using the subband technique, an LTI system can be implemented by the composition of an analysis filterbank, followed by a transfer matrix (subband model) and a synthesis filterbank...
Damián Marelli, Minyue Fu
TWC
2010
15 years 1 months ago
MIMO Broadcast Channels with Spatial Heterogeneity
We develop a realistic model for multiple-input multiple-output (MIMO) broadcast channels, where each randomly located user's average SNR depends on its distance from the tran...
Illsoo Sohn, Jeffrey G. Andrews, Kwang Bok Lee
AAAI
2011
14 years 6 months ago
Lossy Conservative Update (LCU) Sketch: Succinct Approximate Count Storage
In this paper, we propose a variant of the conservativeupdate Count-Min sketch to further reduce the overestimation error incurred. Inspired by ideas from lossy counting, we divid...
Amit Goyal, Hal Daumé III
AIED
2005
Springer
15 years 12 months ago
The eXtensible Tutor Architecture: A New Foundation for ITS
The eXtensible Tutor Architecture (XTA) was designed as a platform for creating and deploying many types of Intelligent Tutoring Systems across many different platforms. The XTA pr...
Goss Nuzzo-Jones, Jason A. Walonoski, Neil T. Heff...