Developing a grammar checker for Filipino using language tool

Given the limited number of Filipino Grammar Checkers available, as stated in (Jasa et. al., 2007), there is a need to develop readily-available Filipino Grammar Checkers. This research is about the development of a Filipino Grammar Checker utilizing LanguageTool. LanguageTool is an open-source rule-based style and grammar checker that follows a manual-based rule creation approach. The different resources and corresponding notations are outlined and discussed. These resources are the tagger dictionary, the tag set for the tagger dictionary, and the rule file. The different Filipino linguistic phenomena and language properties are also discussed. How the system captured these phenomena and properties are explained in the document. Issues regarding the resources and the system, and how these issues were addressed are also included in the discussions. The system was tested using a collection of data and these are the results: 91% precision rate, 51% recall rate, and 83% accuracy rate. For comparative evaluation, the same collection was tested on another Grammar Checker for Filipino and its scores in precision, recall, and accuracy are lower than the system. The systems ability to correctly identify the type of error and provide the right suggestion was also checked. The system correctly identified the type of errors in 41 out of 42 sentences. It has been proven that the linguistic power of LanguageTool and its resources are sufficient to handle the different linguistic phenomena and language properties of the Filipino language