Update README.md

README.md

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 license: cc-by-nc-4.0
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-KEPTlongfomer using [contrastive learning](https://arxiv.org/pdf/2210.03304.pdf).
+KEPTlongfomer pretrained using [contrastive learning](https://arxiv.org/pdf/2210.03304.pdf).
 
 
-First, init from RoBERTa-base-PM-M3-Voc-distill from [bio-lm](https://github.com/facebookresearch/bio-lm/blob/main/README.md).
+First, The model was first inited from RoBERTa-base-PM-M3-Voc-distill from [bio-lm](https://github.com/facebookresearch/bio-lm/blob/main/README.md).
 
 And then pretrained with Hierarchical Self-Alignment Pretrainumls (HSAP) using Knowledge Graph UMLS.
 This includes (a) Hierarchy, (b) Synonym, (c) Abbreviation. For more info, see section 3.3 in [paper](https://arxiv.org/pdf/2210.03304.pdf).