Semantic Similarity Matching Using Contextualized Representations

Farhood Farahnak, Elham Mohammadi, MohammadReza Davari, Leila Kosseim

Abstract: Different approaches to address semantic similarity matching generally fall into one of the two categories of interaction-based and representation-based models. While each approach offers its own benefits and can be used in certain scenarios, using a transformer- based model with a completely interaction-based approach may not be practical in many real-life use cases. In this work, we compare the performance and inference time of interaction-based and representation-based models using contextualized representations. We also propose a novel approach which is based on the late interaction of textual representations, thus benefiting from the advantages of both model types.