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IS
2007
15 years 6 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»
15 years 6 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»
15 years 6 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»
15 years 5 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»
15 years 4 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