An approach for collaborative image retrieval using multi-class relevance feedback and Particle Swarm Optimization classifier is proposed in [31].
where f opt denotes the optimal selected feature, D and R represent feature-class relevance and feature-feature redundancy, respectively.
Design of a filter depends on two parameters, namely the objective function and the metric it employs for estimating the feature-to-class (relevance) and feature-to-feature (redundancy) association.
Recently, feature selection methods using information theory have been devised for feature-to-class relevance and feature-to-feature correlations, including a probabilistic interpretation based upon the conditional likelihood maximisation in order to unify information theoretic feature selection [ 36].
In recent years, many feature selection methods have been devised for finding such discriminative genes, and more recently information theoretic filters have also been introduced for capturing feature-to-class relevance and feature-to-feature correlations in microarray-based classification.
A 15-member task force of students, faculty members and coaches picked the mythological bird for its graphic viability, class and relevance (Elon, too, rose from the ashes after the devastating fire in 1923).
This consideration, in turn, implies that the histo-blood group categories (A, B, AB, and O) may not fully describe the variation in ABO antigens, and raises the possibility of a larger number of allelic classes of relevance for natural selection.
Finally, we could also define a fourth relevance class, irrelevant, that does not result in packet transmissions, but such class would have no impact in our analyses.
Reddit also needed to hire a group of engineers with what Caldwell called "world class search and relevance engineering expertise".
