1. A method for the determination of a plurality of maximally consistent key-concepts for semantics based annotating of a multimedia content based on a plurality of key-concepts, a plurality of models, and a plurality of semantic key-concept pairs, wherein said plurality of maximally consistent key-concepts is a subset of said plurality of key-concepts, said method comprising: receiving a plurality of key-concept evaluations of said multimedia content with respect to said plurality of key-concepts and said plurality of models; computing a plurality of key correlations based on said plurality of key-concept evaluations and said plurality of key-concepts; computing a plurality of model correlations based on said plurality of key-concept evaluations and said plurality of models; computing a plurality of semantic correlations based on said plurality of semantic key-concept pairs; computing a plurality of model correlation P values based on said plurality of model correlations and said plurality of models; computing a plurality of key correlation P values based on said plurality of model correlation P values and said plurality of key correlations; computing a plurality of pair-wise key correlations based on said plurality of key correlations, said plurality model correlations, and said plurality of semantic correlations; computing a plurality of assessments based on said plurality of key-concepts, said plurality of key correlation P values, said plurality of pair-wise key correlations, and said plurality of semantic correlations; and computing said plurality of maximally consistent key-concepts based on said plurality of key-concepts and said plurality of assessments.