  In this study, a dictionary-based method is used to extract expressive
concepts from documents. So far, there have been many studies concerning
concept mining in English, but this area of study for Turkish, an agglutinative
language, is still immature. We used dictionary instead of WordNet, a lexical
database grouping words into synsets that is widely used for concept
extraction. The dictionaries are rarely used in the domain of concept mining,
but taking into account that dictionary entries have synonyms, hypernyms,
hyponyms and other relationships in their meaning texts, the success rate has
been high for determining concepts. This concept extraction method is
implemented on documents, that are collected from different corpora.
