Khanh, L.B., Nguyen Thi Thu, H. and Dao Thanh, T. 2018. Deep Level Markov Chain Model for Semantic Document Retrieval. EAI Endorsed Transactions on Scalable Information Systems. 5, 19 (Sep. 2018), e1. DOI:https://doi.org/10.4108/eai.19-6-2018.155443.