The research on cross-media information retrieval system based on food safety emergencies

In this paper, we design and implement a cross-media information retrieval system based on the area of food safety emergencies. The system collects Internet information using topic crawler, establishes data index on cross-media information and makes fast retrieval by sort labeling. The system supports image semantic retrieval and expansion retrieval based on Ontology. The cross-media retrieval provides a new technology for the research of emergencies field, and meets unique retrieval needs by the largest extend.