The use of large pretrained neural networks to create contextualized word embeddings has drastically improved performance on several natural language processing (NLP) tasks. These computationally expensive models have begun to be applied to domain-specific NLP tasks such as re-hospitalization prediction from clinical notes. This paper demonstrates that using large pretrained models produces excellent results on common learning analytics tasks. Pre-training deep language models using student forum data from a wide array of online courses improves performance beyond the state of the art on three text classification tasks. We also show that a smaller, distilled version of our model produces the best results on two of the three tasks while limiting computational cost. We make both models available to the research community at large.
- Pub Date:
- December 2019
- Computer Science - Computers and Society;
- Computer Science - Artificial Intelligence;
- Computer Science - Computation and Language;
- Computer Science - Machine Learning
- Accepted for poster presentation at the 10th International Learning Analytics and Knowledge (LAK20) Conference