EN
In the past few decades, the theory of valence has received a growing recognition as a syntactic model that is more fruitful than ones provided by a traditional grammar. Within the Slovak context, the first valence dictionary was published in 1998. This paper has been motivated by preparation of Valence Dictionary of the Slovak Verbs on Corpus Basis. The study deals with the theoretical and methodological issues of valence processing. An attempt has been made to solve some problematic aspects of valence theory and practice, especially those of semantic classification of verbs, delimitation of semantic roles, distinguishing valence complements from non-valence ones, etc. The paper is based on study of material gained from the Slovak National Corpus. The list of two-level semantic roles and the verb semantic classes outlined in Valence Dictionary of Slovak Verbs (1998) was made more precise in order to achieve a coherent description of complements and verb meanings.