Sciweavers

72 search results - page 5 / 15
» On a syntactic approximation to logics that capture complexi...
Sort
View
ICDT
2009
ACM
166views Database» more  ICDT 2009»
15 years 10 months ago
A compositional framework for complex queries over uncertain data
The ability to flexibly compose confidence computation with the operations of relational algebra is an important feature of probabilistic database query languages. Computing confi...
Christoph Koch, Michaela Götz
WOLLIC
2010
Springer
15 years 2 months ago
Feasible Functions over Co-inductive Data
Proof theoretic characterizations of complexity classes are of considerable interest because they link levels of conceptual abstraction to computational complexity. We consider he...
Ramyaa Ramyaa, Daniel Leivant
LICS
2012
IEEE
12 years 12 months ago
Graph Logics with Rational Relations and the Generalized Intersection Problem
Abstract—We investigate some basic questions about the interaction of regular and rational relations on words. The primary motivation comes from the study of logics for querying ...
Pablo Barceló, Diego Figueira, Leonid Libki...
ICALP
2005
Springer
15 years 3 months ago
How Well Can Primal-Dual and Local-Ratio Algorithms Perform?
We define an algorithmic paradigm, the stack model, that captures many primal-dual and local-ratio algorithms for approximating covering and packing problems. The stack model is ...
Allan Borodin, David Cashman, Avner Magen
ICLP
2009
Springer
15 years 10 months ago
Preprocessing for Optimization of Probabilistic-Logic Models for Sequence Analysis
Abstract. A class of probabilistic-logic models is considered, which increases the expressibility from HMM's and SCFG's regular and contextfree languages to, in principle...
Henning Christiansen, Ole Torp Lassen