5, our proposed method (RNN + DP + diff)     highest accuracy (accuracy = 0.43), and the results of McNemar's testing reveal a significant difference between the (Word pair) and (RNN + DP + diff) methods (p = 0.0046, p < 0.001) and between the (RNN sentence) and (RNN + DP + diff) methods (p = 0.0077, p < 0.001).
the difference between the (Vector centroid) and (RNN + DP + diff) methods was only marginally significant (p = 0.12).