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At present many fields of Natural Language Processing (NLP) come into existence with highly advanced applications and technology. Question Answering Based Dialogue System is an application of Natural Language Understanding (NLU). It has now become top choice for the researchers. In the Question Answering Based Dialogue System (QABDS) user gives questions or queries to the system to obtain correct and accurate answers. By using this system, a user gets valid and accurate answers to the natural language questions instead of SQL query. In this paper we have proposed a comparison of QABD systems and found some research gaps in these systems. Based on this we are introducing an NLP based QABD system for an Indian Language ‘Punjabi’.

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