Research on Tourism Question Answering System Based on Xi’an Tourism Knowledge Graph

Abstract

Question answering (QA) system provides a direct, efficient and accurate way for people to obtain information. At present, open domain QA systems such as Siri and Cortana are widely used in the general field, but they cannot meet the demand of some professional fields. This paper focuses on the background and needs of QA in the tourism field, researching the relevant technologies required for the implementation of QA system, and finally completes the construction of QA system based on the knowledge graph of tourism. The main research contents of this paper are as follows: 1.An algorithm to identify the tourism entities in questions is proposed according to the characteristics of the tourism entities. 2. Referring to the ideas of Liu et al., a convolutional neural network (CNN) model is introduced into attribute linking, but in order to improve the accuracy of attribute linking, we move the similarity calculation of questions and attributes from the outside of the model to the input layer of the model, and also introduce Attention mechanism. Integrate the technology of each module to design and implement a QA system for tourism. We experiment with the system on the constructed Xi’an tourism knowledge graph, and the results prove that the system we designed can answer the natural language questions raised by users about tourism.

Domain-specific knowledge graphs: A survey

“…Travel is one of the key domains which availed from the growing use of KGs. This is evident because KGs have been constructed and used in touristic QA systems [181] or in tourism recommender systems to recommend personalized attractions [182] and the best accommodation prices [183]. For example, Kärle et al [183] gathered data about Tirol region at Austria and constructed "Tirol Tourism" KG to benefit applications such as eCommerce.…”

“…For entity alignment, the authors made use of Skip-Gram Model to fitch relative entities during the knowledge acquisition phase. Another attempt to construct a KG for Chinese tourism was undertaken by [181]. The aim was to build a QA system based on the implemented KG of tourism.…”