Included features are in parentheses: "con" is sentence vector concatenation, "sub" is sentence vector subtraction, "other" stands for 4 other features (see Section 4) each sentence and how often, we define a vector wdCount i for sentence Sen i and enumerate all words occuring in the MSRPC: giving the word count vectors n MSRPC dimensions.
the k-th component of wdCount i is the frequency with which the word w (19) for k = 1, ..., n MSRPC .