15. The system of claim 14 , wherein prior to computing the latent topic visual language model for a semantic concept representation, each image associated with the semantic concept of the representation is characterized as a collection of visual words.
15. The system of claim 14 , wherein prior to computing the latent topic visual language model for a semantic concept representation, each image associated with the semantic concept of the representation is characterized as a collection of visual words. 16. The system of claim 15 , wherein the latent topic visual language model associated with each semantic concept representation is based on parameters generated using at least one n-gram approach, wherein said n-gram approach models the image based on each visual word and n-1 of its neighboring visual words.