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ER
2007
Springer
167views Database» more  ER 2007»
13 years 11 months ago
An Unified Dynamic Description Logic Model for Databases: Relational Data, Relational Operations and Queries
The paper presents an unified Description Logic (DL) model for databases. Describing database models using DLs is a fundamental problem in many areas because it turns databases to...
Guoshun Hao, Shilong Ma, Yuefei Sui, Jianghua Lv
SPATIALCOGNITION
1998
Springer
13 years 12 months ago
Mental Models in Spatial Reasoning
This chapter gives an overview of our ongoing experimental research in the MeMoSpace project, concerning the cognitive processes underlying human spatial reasoning. Our theoretical...
Markus Knauff, Reinhold Rauh, Christoph Schlieder,...
CORR
2011
Springer
173views Education» more  CORR 2011»
13 years 2 months ago
Linear Dependent Types and Relative Completeness
—A system of linear dependent types for the lambda calculus with full higher-order recursion, called d PCF, is introduced and proved sound and relatively complete. Completeness h...
Ugo Dal Lago, Marco Gaboardi
LICS
2009
IEEE
14 years 2 months ago
Logical Step-Indexed Logical Relations
We show how to reason about “step-indexed” logitions in an abstract way, avoiding the tedious, error-prone, and proof-obscuring step-index arithmetic that seems superficially...
Derek Dreyer, Amal Ahmed, Lars Birkedal