A Grammar Checker for Tagalog using LanguageTool

This document outlines the use of Language Tool for a Tagalog Grammar Checker. Language Tool is an open-source rule-based engine that offers grammar and style checking functionalities. The details of the various linguistic resource requirements of Language Tool for the Tagalog language are outlined and discussed. These are the tagger dictionary and the rule file that use the notation of Language Tool. The expressive power of Language Tool’s notation is analyzed and checked if Tagalog linguistic phenomena are captured or not. The system was tested using a collection of sentences and these are the results: 91% precision rate, 51 % recall rate, 83 % accuracy rate.