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IS
2007
13 years 10 months ago
Semantic optimization techniques for preference queries
Preference queries are relational algebra or SQL queries that contain occurrences of the winnow operator (find the most preferred tuples in a given relation). Such queries are pa...
Jan Chomicki
CORR
2004
Springer
142views Education» more  CORR 2004»
13 years 10 months ago
Modeling and Validating Hybrid Systems Using VDM and Mathematica
Hybrid systems are characterized by the hybrid evolution of their state: A part of the state changes discretely, the other part changes continuously over time. Typically, modern c...
Bernhard K. Aichernig, Reinhold Kainhofer
ENTCS
2000
59views more  ENTCS 2000»
13 years 10 months ago
Building continuous webbed models for system F
We present here a large family of concrete models for Girard and Reynolds polymorphism (System F), in a non categorical setting. The family generalizes the construction of the mod...
Stefano Berardi, Chantal Berline
SIAMAM
2002
129views more  SIAMAM 2002»
13 years 9 months ago
Periodic Wavelet Transforms and Periodicity Detection
The theory of periodic wavelet transforms presented here was originally developed to deal with the problem of epileptic seizure prediction. A central theorem in the theory is the c...
Götz E. Pfander, John J. Benedetto
LOGCOM
2010
136views more  LOGCOM 2010»
13 years 8 months ago
Combining Derivations and Refutations for Cut-free Completeness in Bi-intuitionistic Logic
Bi-intuitionistic logic is the union of intuitionistic and dual intuitionistic logic, and was introduced by Rauszer as a Hilbert calculus with algebraic and Kripke semantics. But ...
Rajeev Goré, Linda Postniece