Image Sense Classification in Text-Based Image Retrieval

摘要

An image sense is a graphic representation of a concept denoted by a (set of) term(s). This paper proposes algorithms to find image senses for a concept, collect the sense descriptions, and employ them to disambiguate the image senses in text-based image retrieval. In the experiments on 10 ambiguous terms, 97.12% of image senses returned by a search engine are covered. The average precision of sample images is 68.26%. We propose four kinds of classifiers using text, image, URL, and expanded text features, respectively, and a merge strategy to combine the results of these classifiers. The merge classifier achieves 0.3974 in F-measure (β=0.5), which is much better than the baseline and has 51.61 % of human performance.