Abstract In this paper, we proposed a Vietnamese named entity question answering (QA)
model. This model applies an analytical question method using CRF machine learning
algorithm combined with two automatic answering strategies: indexed sentences database-
based and Google search engine-based. We gathered a Vietnamese question dataset
containing about 2000 popular “Who, Whom, Whose” questions to evaluate our question
chunking method and QA model. According to experiments, question chunking phase ...