LANGUAGE PROCESSING DICTIONARY FOR BIDIRECTIONALLY RETRIEVING MORPHEMIC AND SEMANTIC EXPRESSIONS

Morphemic, conceptional or semantic, and syntaxic dictionaries (21-23) keep morphemic, conceptional, and syntaxic items, respectively. Each morphemic item comprises a morphemic description and a first pointer pointing to a set of syntaxic items corresponding to the morphemic description. Similarly, each conceptional item comprises a conceptional description or symbol and a second pointer pointing to a set of syntaxic items. Each syntaxic item comprises a syntaxic description and a third and a fourth pointer pointing to a set of morphemic items and to a set of conceptional items, respectively. Responsive to an input expression, a retrieving arrangement (24) retrieves a morphemic and a conceptional item when the input expression is morphemic and conceptional, respectively. The first or the second pointer of the retrieved item is used in retrieving a syntaxic item by which the morphemic and/or the conceptional dictionary is referred back to. An output expression is produced as a morphemic, a conceptional, and/or a syntaxic expression as desired.