We want to compare our combined CNN model with models that use either RSeq or SDP alone, so we consider three experiment settings: SDP refers to a CNN model that uses only SDP representation of a relation instance, RSeq refers to a CNN model that uses only the RSeq, and Comb refers to our combined model.
most existing NN-based approaches for relation classification are either based on the shortest dependency path or the raw sequence, although these two representations may complement each other.