Grammar Systems Applied to Parsing

This paper deals with different variants of grammar systems. Grammar systems combine the simplicity of Context Free Grammars with the generative power of more complex gammars. There are two main variants of grammar systems described in this paper: PC grammar systems and CD grammar systems. New type of grammar system, which is a modification of the CD grammar systems, is also described in the paper. New method of parsing, based on this new grammar system is proposed in the paper. This new parser consists of several smaller parsers, which work in both top down and bottom up way