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» Descriptive and Computational Complexity
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KR
2010
Springer
15 years 11 months ago
Worst-Case Optimal Reasoning for the Horn-DL Fragments of OWL 1 and 2
Horn fragments of Description Logics (DLs) have gained popularity because they provide a beneficial trade-off between expressive power and computational complexity and, more spec...
Magdalena Ortiz, Sebastian Rudolph, Mantas Simkus
COLING
1992
15 years 7 months ago
Knowledge Extraction From Texts By Sintesi
In this paper we present SINTESI, a system for the knowledge extraction from Italian inputs, currently under development in our re,search centre. It is used on short descriptive d...
Fabio Ciravegna, Paolo Campia, Alberto Colognese
160
Voted
COMPLEXITY
2007
94views more  COMPLEXITY 2007»
15 years 6 months ago
Emergence is coupled to scope, not level
Since its application to systems, emergence has been explained in terms of levels of observation. This approach has led to confusion, contradiction, incoherence and at times mysti...
Alex J. Ryan
167
Voted
HICSS
2003
IEEE
98views Biometrics» more  HICSS 2003»
15 years 12 months ago
On the Limits of Bottom-Up Computer Simulation: Towards a Nonlinear Modeling Culture
1 In the complexity and simulation communities there is growing support for the use of bottom-up computer-based simulation in the analysis of complex systems. The presumption is th...
Kurt A. Richardson
COMPGEOM
2003
ACM
15 years 12 months ago
Curve-sensitive cuttings
We introduce (1/r)-cuttings for collections of surfaces in 3-space that are sensitive to an additional collection of curves. Specifically, let S be a set of n surfaces in R3 of c...
Vladlen Koltun, Micha Sharir