<Li> L, a learner (training algorithm for binary classifiers) </Li> <Li> labels y where y ∈ (1,...K) is the label for the sample X </Li> <Dd> Output: <Ul> <Li> a list of classifiers f for k ∈ (1,..., K) </Li> </Ul> </Dd> <Ul> <Li> a list of classifiers f for k ∈ (1,..., K) </Li> </Ul>

Directly achieves multi-class classification (without support of binary classifiers