Before revision:  While previous approaches have used earlier implementations of BERT to train their Dutch BERT, we used RoBERTa, a robustly optimized BERT approach, to train a Dutch language model called RobBERT.
After revision:  While previous approaches have used earlier implementations of BERT to train a Dutch version of BERT, we used RoBERTa, a robustly optimized BERT approach, to train a Dutch language model called RobBERT.