Multilingual restricted domain QA System with dialogue management: Bengali and Telugu as a case study

In this book, I have developed a keyword based multilingual restricted domain question answering system with dialogue management for Railway information in Bengali and Telugu. The system accepts typed text inputs and provides text output as well. The architecture of a multilingual restricted domain question answering system with dialogue management has been proposed. The system maintains language specific domain and linguistic models. The system maintains dialogue history for each query topic and for each language containing values of information chunks and the answers for the previous queries in the dialogue. The answer generation process retrieves data from the database and fills slots in the answer templates specific to query topic and language. Null answers are explained and recommendations are made suggesting alternative answers. The system has been developed in the Indian Railways information domain for accepting Telugu and Bengali text inputs and has been evaluated.