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FROCOS
2007
Springer
16 years 29 days ago
Noetherianity and Combination Problems
In abstract algebra, a structure is said to be Noetherian if it does not admit infinite strictly ascending chains of congruences. In this paper, we adapt this notion to first-ord...
Silvio Ghilardi, Enrica Nicolini, Silvio Ranise, D...
GECCO
2007
Springer
166views Optimization» more  GECCO 2007»
16 years 29 days ago
Comparison of tree and graph encodings as function of problem complexity
In this paper, we analyze two general-purpose encoding types, trees and graphs systematically, focusing on trends over increasingly complex problems. Tree and graph encodings are ...
Michael D. Schmidt, Hod Lipson
ICDT
2007
ACM
126views Database» more  ICDT 2007»
16 years 29 days ago
Containment of Conjunctive Queries over Databases with Null Values
Abstract. We study containment of conjunctive queries that are evaluated over databases that may contain tuples with null values. We assume the semantics of SQL for single block qu...
Carles Farré, Werner Nutt, Ernest Teniente,...
ICSOC
2007
Springer
16 years 29 days ago
Verifying Temporal and Epistemic Properties of Web Service Compositions
Model checking Web service behaviour has remained limited to checking safety and liveness properties. However when viewed as a multi agent system, the system composition can be ana...
Alessio Lomuscio, Hongyang Qu, Marek J. Sergot, Mo...
ICWL
2007
Springer
16 years 29 days ago
A Web Application for Mathematics Education
AGILMAT is a web application designed to help students learn Mathematics, with focus on high-school algebra and calculus drills. A modular and extensible architecture and a wizard-...
Ana Paula Tomás, José Paulo Leal, Ma...