SELSA系统是一个通过添加潜在语义分析（latent semantic analysis，LSA）和一些简单的句法特征从而进行评分的系统，此外，该系统也用到了词性等方面的知识。

参考资料：D.Kanejiya，A.Kumar，S.Prasad. Automatic Evaluation of Students’ Answers Using Syntactically Enhanced LSA. In：Proceedings of the HLTNAACL 03 Workshop on Building Educational Applications Using Natural Language Processing. Edmonton：the HLTNAACL 03 Workshop on Building Educational Applications Using Natural Language Processing ，2003.53~60.