Question Answering System is a system built using JAVA that can receives a question from user and returns the answers. There are several approaches that could be used to build a question answering system. Rule-based method and Dice Coefficient is used on this research to build a question answering system for Indonesian Language based on factoid questions (when, why, where, who, what) about Biography of the first President of Indonesia until the seventh President of Indonesia and the first Vice-President of Indonesia until the twelve Vice-President of Indonesia. WordNet also be used to expand the query.
Here are some features of question answering system:
- Indexing document
- Preprocessing document (tokenization, remove stop words, stemming)
- Calculate similarity between query and document (Dice Coefficient)
- Rule based filtering
- Query expansion using Wordnet Bahasa