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QEST
2008
IEEE
14 years 5 months ago
Quasi-Birth-Death Processes, Tree-Like QBDs, Probabilistic 1-Counter Automata, and Pushdown Systems
We begin by observing that (discrete-time) QuasiBirth-Death Processes (QBDs) are equivalent, in a precise sense, to (discrete-time) probabilistic 1-Counter Automata (p1CAs), and b...
Kousha Etessami, Dominik Wojtczak, Mihalis Yannaka...
INFOCOM
2007
IEEE
14 years 5 months ago
Service Charge and Energy-Aware Vertical Handoff in Integrated IEEE 802.16e/802.11 Networks
Abstract— This paper considers two issues arising in an integrated IEEE 802.16e/802.11 network: 1) finding a possible network, which mobile station (MSTA) can switch to, and 2) ...
Youngkyu Choi, Sunghyun Choi
SEMWEB
2007
Springer
14 years 4 months ago
Hybrid Alignment Strategy for Anatomical Ontologies: Results of the 2007 Ontology Alignment Contest
An ontology is a formal representation of a domain modeling the entities in the domain and their relations. When a domain is represented by multiple ontologies, there is a need for...
Songmao Zhang, Olivier Bodenreider
BTW
2005
Springer
113views Database» more  BTW 2005»
14 years 4 months ago
A Learning Optimizer for a Federated Database Management System
: Optimizers in modern DBMSs utilize a cost model to choose an efficient query execution plan (QEP) among all possible ones for a given query. The accuracy of the cost estimates de...
Stephan Ewen, Michael Ortega-Binderberger, Volker ...
CIKM
2005
Springer
14 years 4 months ago
Retrieving answers from frequently asked questions pages on the web
We address the task of answering natural language questions by using the large number of Frequently Asked Questions (FAQ) pages available on the web. The task involves three steps...
Valentin Jijkoun, Maarten de Rijke