منابع مشابه
Do all fragments count?
We aim at finding the minimal set of fragments which achieves maximal parse accuracy in Data Oriented Parsing (DOP). Experiments with the Penn Wall Street Journal (WSJ) treebank show that counts of almost arbitrary fragments within parse trees are important, leading to improved parse accuracy over previous models tested on this treebank. We isolate a number of dependency relations which previou...
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In the scenic Rocky Mountain town of Banff, Alberta, the site of Canada’s oldest national park, it is not un common to see elk grazing on lawns or near riverside trails. Why are elk wandering about town? The town may act as a refuge from wolves—a species that usually goes out of its way to avoid human contact. But elk “ townies,” as the locals refer to them, are a new phenomenon. Prior to the 1...
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Drawing on studies of humans, rodents, birds and arthropods, I show that 'cognitive maps' have been used to describe a wide variety of spatial concepts. There are, however, two main definitions. One, sensu Tolman, O'Keefe and Nadel, is that a cognitive map is a powerful memory of landmarks which allows novel short-cutting to occur. The other, sensu Gallistel, is that a cognitive map is any repr...
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ژورنال
عنوان ژورنال: Nature
سال: 1889
ISSN: 0028-0836,1476-4687
DOI: 10.1038/040319a0