Huang, Po-Sen, et al. "Learning deep structured semantic models for web search using clickthrough data." Proceedings of the 22nd ACM international conference on Conference on information & knowledge management. ACM, 2013.
该网络把两个不同的输入映射到相同的语义空间，采用有监督学习。使用1个正样本，4个负样本。使用cosine计算相似度，softmax计算概率。
Shen, Yelong, et al. "Learning semantic representations using convolutional neural networks for web search." Proceedings of the 23rd International Conference on World Wide Web. ACM, 2014.
在DSSM中加入了用CNN做文本embedding。