Therefore, our cascading collective classification system, shown in Figure 3, combines binary classifiers for minority categories and a collective classifier for all categories in a pipeline.
for the five classes mediated/function, mediated/aggregate, mediated/comparative, mediated/bridging, and mediated/WK that each constitutes less than the expected oneeighth of the instances, we develop five binary classifiers with SVM light (Joachims 1999).