Match{}^{2}: A Matching over Matching Modelfor Similar Question Identification
Table 3. Results of different similarity functions in the matching pattern-based module on CQADupStack.
['Function', 'Accuracy', 'Precision', 'Recall', 'F1']
4.4.1. Pattern Similarity Function Here, we study the performance of five candidate functions. As we can see, the choice of pattern similarity function does affect the performance of the Match2 model. Specifically, the dot function has achieved the best performance in terms of all the evaluation metrics. The reason might be that the dot function could capture the detailed interactions of each dimension, which are useful in identifying the similarities between matching patterns. In the following experiments, we will use the dot as the pattern similarity function.