simcse-pytorch

最近出圈的无监督语义表示模型simcse，依然是基于苏神的keras版本改造的pytorch版本， 先占坑待后续补充更多实验，并补充Danqi女神的pytorch版本在中文上效果

目前仅实验了roberta-wwm在LCQMC上无监督训练效果，评测指标是Spearman correlation

Model	correlation score
roberta-wwm	0.67029
dropout_rate=0.1
learning_rate=1e-5
pooling: first-last-avg
roberta-wwm(no training)	0.60377
pooling: first-last-avg

环境

• python==3.6.*
• pytorch==1.8
• transformers==4.4.2

参考

SimCSE: Simple Contrastive Learning of Sentence Embeddings https://arxiv.org/pdf/2104.08821.pdf https://kexue.fm/archives/8348