Before revision: Recent years have witnessed  a new paradigm of building natural language processing (NLP) systems: general-purpose, pre-trained language models (LMs) are fine-tuned with simple downstream models to attain state-of-the-art performance for a variety of target tasks.
After revision: Recent years have witnessed a new paradigm of building natural language processing (NLP) systems: general-purpose, pre-trained language models (LMs) are composed with simple downstream models to attain state-of-the-art performance for a variety of target tasks.