Design of Retrieval Method of Map Targets in the Multimodal Interface

Multimodal interface is a part of computer technologies and plays an important role in many fields. The multimodal interface, which is efficient, flexible, and convenient, supports the system of CBIR strongly. In this paper, the method, by which map targets are retrieved in multimodal interface, has been studied. According to the characteristic that the different users do not have the same interest in the map targets, a concept model, which is called multi-user conceptual implication(MUCI), has been established to reflect the difference of map targets. The MUCI not only corresponds to hierarchies of categories of map targets, but also implicates the degree of user's interest of categories. Once the map targets that users are interested in have been searched in MUCI, the targets of actual map can be quickly and accurately retrieved according to their color and shape and retrieval algorithms. The targets that are not important or less important can be ignored. The established method of this model, processes of reasoning and retrieval have been described in paper. In addition, the design and manipulation of data structure of map in multimodal interface have been illustrated. This multimodal interface has been used successfully in resource information system of a large oil field and the results are satisfying.