Opinion Mining in an Informative Corpus: Building Lexicons

This paper presents first steps of an on-going work aiming at the constitution of lexicons for opinion mining. Our work is corpus-oriented, the corpus being of in-formative nature (related to avionic manu-facturers) rather than opinion-oriented (as in current works dealing with social net-works). We especially investigate the ques-tion of interrelation between factual in-formation and evaluative stance. Another aspect concerns the intensity of expressed opinions. Lexicons for adjectives and ad-verbs have been built, based on the given corpus, and we present the principles and method used for their construction.