منابع مشابه
A* with Lookahead Re-Evaluated
A* with lookahead (AL*) is a variant of A* that performs a cost-bounded DFS lookahead from a node when it is generated. We show that the original version of AL* (AL0) can, in some circumstances, fail to return an optimal solution because of the move pruning it does. We present two new versions, AL1 and ELH , that we prove to always be correct and give conditions in which AL0 is guaranteed to be...
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A new version of a special-purpose processor for running lazy functional programs is presented. This processor – the Reduceron – exploits parallel memories and dynamic analyses to increase evaluation speed, and is implemented using reconfigurable hardware. Compared to a more conventional functional language implementation targeting a standard RISC processor running on the same reconfigurable ha...
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Big Bang, quarks, dark matter, general relativity, red-shift, non-Euclidean geometry, worm holes—all words that are mysterious in their details, but often translated into the vernacular with relative ease by journalists and science writers. These words form part of the core of the science of cosmology, a science in which the questions usually are easy to state, but equally difficult to answer. ...
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ژورنال
عنوان ژورنال: Studies in History and Philosophy of Science Part A
سال: 1987
ISSN: 0039-3681
DOI: 10.1016/0039-3681(87)90021-5