This paper will report on how a new system of semantic processing could generate a breakthrough in concepts free from the limitations of conventional semantic processing based on existing case patterns in existing thesauri.We will also discuss,in order to realize a more advanced system of semantic processing,what kind of linguistic knowledge is needed.Finally,we will examine how to collect and structuralize this knowledge. Our assumptions are as follows:1.A polysemy has one basic semantic core and many meanings are derived from this semantic core,depending on how it is interpreted.2. When dealing with abstract concepts,we replace them with more concrete entities that can be directly felt with five senses.Within the framework of basic Japanese and English verbs from which basic words are derived and through which we recognize external objects,their core concepts will be analyzed.We will analyze"recognition primitives,"from which we acquire meanings and usages for concrete objects.We will try to describe perceptible notions of these core concepts by analyzing a number of important polysemous verbs.KeyWords:semantic attribute,case element,selectional restriction(of nouns, etc.),recognition primitives,polysemies,Core Theory 1 IntroductionIn the semantic analysis of natural language,we have often utilized case patterns(Ikehara, Miyazaki,and Yokoo 1993), (Ikehara,Miyazaki,Shirai,and Hayashi 1987)such as the sort of semantic attribute that nouns possess with specific case elements in the verbs,the central element of linguistic structures.During such processes,we also used a thesaurus (Ikehara et al.1993), (Ikehara et al.1987)that systematically classifies words and concepts listing their relations.However,the selectional restrictions of nouns in some case patterns could not be adequately satisfied in a thesaurus with even a sufficient number of nodes and these restrictions could not be supported by their semantic attributes. In any case,the comprehensibility of the thesaurus is not guaranteed.For example,the difference in case patterns between"iru" and"aru"(iru and aru both mean"to exist")generally depends on whether the semantic t Niigata University,Faculty of Engineering features in the'ga'case("ga"in Japanese is a sentence connector or a case marking postposition)are animate or not;however,there are many examples in violation of these sorts of selectional restrictions.The examples are:"He has two children.(aru)"(kare niha futarino kodomo ga aru)"There is a person opposing-.(aru)"(-ni hantai suru hito ga aru)"There is a car in front of the house(iru)"(ie no mae ni kuruma ga iru).Further,we cannot precisely describe differences among synonyms with nuances such as in"agaru"and"noboru"(both of them meaning"to rise",or"to climb")within the rules from the views of selectional restrictions.Trope expressions like metaphors and metonymies are in violation with the rules of selectional restrictions.Moreover,although even the selectional restrictions are qualified,we cannot obtain semantically correct interpretations for the...
