Query Generation from Multiple Media Examples

This paper exploits a media document representation called feature terms to generate a query from multiple media examples, e.g. images. A feature term denotes a continuous interval of a media feature dimension. This approach (1) helps feature accumulation from multiple examples; (2) enables the exploration of text-based retrieval models for multimedia retrieval. Three criteria, minimised chi², minimised AC/DC and maximised entropy, are proposed to optimise feature term selection. Two ranking functions, KL divergence and BM25, are used for relevance estimation. Experiments on Corel photo collection and TRECVid 2006 collection show the effectiveness in image/video retrieval.