Nec (china) Co., Ltd.

Huifeng Liu

Xiaowei Liu

Hongwei Qi

Yuguang Liu

Yabo Wang

Toshikazu Fukushima

Qiangze Feng

A natural language based location query system and a method thereof. The system comprises a receiving device which receives a request for natural language query from a user terminal; an access device which accesses a location ontology base and a location query language base that are external to the system or internal in the system, wherein the location ontology base comprising knowledge descriptions about the field of a location service, and the location query language base comprising a language model for the location service query; a natural language query processing device which performs at least one of a fuzzy processing and an indirection processing on the received request for natural language query by searching the location ontology base and the location query language base with the access device, retrieves location information corresponding to the request from a location database; and a sending device which sends the location information to the user terminal. This invention also provides a keyword based location query system and a method thereof, and a natural language based and keyword based location query system and a method thereof. This invention not only process user fuzzy query and indirect query, but also process compound sentence query and query having semantic error. Therefore, the degree of freedom of user query is enhanced and the location query is more flexible and accurate.

Natural language based location query system, keyword based location query system and a natural language and keyword based location query system

The invention provides a map knowledge base generating device and a method thereof, and a traffic information query system and a method thereof. The traffic information query system, comprises: a map knowledge base generating section for generating knowledge related to attributes of roads and traffic points, attribute values corresponding to the attributes, and spatial information of the attribute values based on an electronic map so as to form a map knowledge base; and a traffic query processing section for receiving and analyzing a query form a user terminal, decomposing the query if it is determined that the query can be decomposed according to the map knowledge base, and searching a traffic information database according to the decomposed the query request.

Traffic information query system and traffic information query method

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Beijing, China

Huifeng Liu