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DLOG
2003
13 years 10 months ago
Rewriting Aggregate Queries using Description Logic
This paper presents an application of a DL reasoner to the optimization of an object-relational query language. Queries containing aggregate functions are difficult to optimize be...
David DeHaan, David Toman, Grant E. Weddell
DATE
2010
IEEE
136views Hardware» more  DATE 2010»
14 years 1 months ago
Reversible logic synthesis through ant colony optimization
Abstract—We propose a novel synthesis technique for reversible logic based on ant colony optimization (ACO). In our ACO-based approach, reversible logic synthesis is formulated a...
Min Li, Yexin Zheng, Michael S. Hsiao, Chao Huang
AGP
1997
IEEE
14 years 1 months ago
Safe Folding/Unfolding with Conditional Narrowing
Abstract. Functional logic languages with a complete operational semantics are based on narrowing, a generalization of term rewriting where unification replaces matching. In this ...
María Alpuente, Moreno Falaschi, Giné...
STACS
1999
Springer
14 years 1 months ago
A Logical Characterisation of Linear Time on Nondeterministic Turing Machines
The paper gives a logical characterisation of the class NTIME(n) of problems that can be solved on a nondeterministic Turing machine in linear time. It is shown that a set L of str...
Clemens Lautemann, Nicole Schweikardt, Thomas Schw...
ISCAS
1999
IEEE
102views Hardware» more  ISCAS 1999»
14 years 1 months ago
Power and signal integrity improvement in ultra high-speed current mode logic
Current mode (ECL) logic has long been the option of choice in those applications requiring logic functions at multigigahertz rates. This trend continues despite the obvious very ...
Hien Ha, Forrest Brewer