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LATA
2010
Springer
14 years 5 months ago
Pregroup Grammars with Letter Promotions
We study pregroup grammars with letter promotions p(m) q(n) . We show that the Letter Promotion Problem for pregroups is solvable in polynomial time, if the size of p(n)
Wojciech Buszkowski, Zhe Lin
CHI
2009
ACM
14 years 8 months ago
An elementary social information foraging model
User interfaces and information systems have become increasingly social in recent years, aimed at supporting the decentralized, cooperative production and use of content. A theory...
Peter Pirolli
COSIT
2003
Springer
111views GIS» more  COSIT 2003»
14 years 1 months ago
Layers: A New Approach to Locating Objects in Space
Standard theories in mereotopology focus on relations of parthood and connection among spatial or spatio-temporal regions. Objects or processes which might be located in such regio...
Maureen Donnelly, Barry Smith
AGI
2008
13 years 9 months ago
A computational approximation to the AIXI model
Universal induction solves in principle the problem of choosing a prior to achieve optimal inductive inference. The AIXI theory, which combines control theory and universal induct...
Sergey Pankov
CORR
2006
Springer
151views Education» more  CORR 2006»
13 years 8 months ago
Combining decision procedures for the reals
Abstract. We address the general problem of determining the validity of boolean combinations of equalities and inequalities between real-valued expressions. In particular, we consi...
Jeremy Avigad, Harvey Friedman