Dependency-based rules for grammar checking with LanguageTool

This paper describes a possible extension of well-known open source grammar checking software LanguageTool. The proposed extension allows the developers to write grammar rules that rely on natural language parser-supplied dependency trees. Such rules are indispensable for the analysis of word-word links in order to handle a variety of grammar errors, including improper use of articles, incorrect verb government, and wrong word form agreement.