Negation of Croatian Nouns The purpose of this paper is to describe a morphological grammar for recognizing negation of a noun and annotating its polarity accordingly. Not all nouns can be negated on the morphological level. For example, nouns like xe2x80x98activityxe2x80x99 and xe2x80x98knowledgexe2x80x99 (aktivnost, znanje) can have negatives (neaktivnost, neznanje respectfully), but the same is not the case for nouns such as xe2x80x98battlexe2x80x99 or xe2x80x98tablexe2x80x99 (bitka or stol). The most common and frequent Croatian prefix for negation of nouns is xe2x80x98nexe2x80x99 although several more are used either of Slavic (xe2x80x98bexe2x80x99, xe2x80x98bezxe2x80x99) or Latin origin (xe2x80x98antixe2x80x99, xe2x80x98disxe2x80x99). In some cases, negated nouns actually denote positive concepts, whereas their nonnegated counterparts are used for expressing concepts with negative connotations. For this purpose, all the nouns in NooJ dictionary, that may have nouns in both polarities, are provided with Polarity  pos or Polarity  neg marker. This information is used in the grammar to switch the polarity of the opposite noun after the insertion of a negative prefix. The grammar is tested on different types of corpora and results are discussed.

LexiconGrammar Tables Development for Arabic Psychological Verbs The identification of psychological verbs is very important in corpora analyses in order to give the polarity of a given text and define the emotional component. The classification of those verbs represents a challenge for linguists since they classify them according to their needs and their understanding. The aim of this paper is the identification and classification of Arabic psychological verbs through lexicongrammar tables that are well structured, easy to use for linguists and allow them to describe all the grammatical, syntactic and semantic characteristics of the lexicon. In this work we create lexicongrammar tables of Arabic psychological verbs with about 400 verbs entries in three main classes and subclasses to use them in lexical, syntactic and semantic analyzers. Using NooJ as an automatic natural language processing platform, we can automatically recognize Arabic psychological verbs by transforming our lexicongrammar tables into NooJ dictionaries and syntactic grammars enabling the detection of those verbs in texts and corpora.