1. Chai, J., Pan, S., Zhou, M.: MIND: a context-based multimodal interpretation framework in conversational systems. In: Van Kuppevelt, J.C.J., Dybkjær, L., Bernsen, N.O. (eds.) Advances in Natural Multimodal Dialogue Systems Text, Speech and Language Technology, vol. 30, pp. 265–285. Springer, Netherlands (2005)
2. Agrawal, A., Kakde, O.: Semantic analysis of natural language queries using domain ontology for information access from database. Int. J. Intell. Syst. Appl. 5, 81–90 (2013)
3. Pazos, R., Aguirre, M., Gonzalez, J., Carpio, J.: Features and pitfalls that users should seek in natural language interfaces to databases. In: Castillo, O., Melin, P., Pedrycz, W., Kacprzyk, J. (eds.) Studies in Computational Intelligence, vol. 547, pp. 617–630. Springer, Heidelberg (2014)
4. LNCS;R Pazos,2011
5. Zhang, G., Chu, W., Meng, F., Kong, G.: Query formulation from high-level concepts for relational databases. In: User Interfaces to Data Intensive Systems, pp. 64–74. IEEE Computer Society, Los Alamitos, CA (1999)