This paper describes the particular instance of the IFSC protocol where semantic information is introduced through abstraction of lexical terms in the feature space with their SRWL labels.
there are two notable contributions of this work: (1) an interactive method for the expert to directly encode semantic knowledge into the feature space with minimal effort and (2) a querying function which uses both the current state of the learner and properties of the available SRWLs to select informative instances for presentation to the expert.