In this paper we present an automatic method for extraction of synonyms of verbs from an explanatory dictionary based only on hyponym/hyperonym relations existing between the verbs defined and the genus used in their definitions. The set of pairs verb-genus can be considered as a directed graph, so we applied an algorithm to identify cycles in these kind of structures. We found that some cycles...

Defining all words in a Japanese dictionary by using a limited number of words (defining vocabulary) is helpful for Japanese children and second-language learners of Japanese. Although some English dictionaries have their own defining vocabulary, no Japanese dictionary has such vocabulary as of yet. As the first step toward building a Japanese defining vocabulary, we ranked Japanese words based...

Problems related to the existence of integral and rational points on cubic curves date back at least to Diophantus. A significant step in the modern theory of these equations was made by Siegel, who proved that a nonsingular plane cubic equation has only finitely many integral solutions. Examples show that simple equations can have inordinately large integral solutions in comparison to the size...

The traditional crossover operator used in genetic search exhibits a position-dependent bias called the dcfining-length bias. We show how this bias results in hidden biases that are difficult to anticipate and compensate for. We introduce a new crossover operator, shuffle crossover, that eliminates the position dependent bias of the traditional crossover operator by shuffling the representation...

For diagonal cubic surfaces, we give an upper bound for E. Peyre’s Tamagawa type number in terms of the coefficients of the defining equation.

this article aims at defining ricest stemmer in persian language set up in the regional information center for science and technology (ricest). we applied linguistic knowledge and standard algorithms to extract machine-readable rules. in addition, plural suffixes and exceptions of which compound nouns are a part were applied. different parts of singular-stemmer and their functions are described.