{"type":"ScholarlyArticle","title":"A Revised Algorithm for Latent Semantic Analysis","authors":[{"name":"Xiangen Hu","slug":"xiangen-hu","given":"Xiangen","family":"Hu","affiliation":""},{"name":"Zhiqiang Cai","slug":"zhiqiang-cai","given":"Zhiqiang","family":"Cai","affiliation":""},{"name":"Max M. Louwerse","slug":"max-m-louwerse","given":"Max M.","family":"Louwerse","affiliation":""},{"name":"Andrew Olney","slug":"andrew-olney","given":"Andrew","family":"Olney","affiliation":""},{"name":"Phanni Penumatsa","slug":"phanni-penumatsa","given":"Phanni","family":"Penumatsa","affiliation":""},{"name":"Arthur C. Graesser","slug":"arthur-c-graesser","given":"Arthur C.","family":"Graesser","affiliation":""}],"abstract":"The intelligent tutoring system AutoTutor uses latent semantic analysis to evaluate student answers to the tutor's questions. By comparing a student's answer to a set of expected answers, the system determines how much information is covered and how to continue the tutorial . Despite the success of LSA in tutoring conversations, the system sometimes has difficulties determining at an early stage whether or not an expectation is covered . A new LSA algorithm significantly improves the precision of AutoTutor's natural language understanding and can b e applied to other natural language understanding applications.","doi":null,"url":"https://ijcai.org/proceedings/2003/246","pdf":"https://ijcai.org/proceedings/2003/0246.pdf","markdown":"https://ijcai.org/proceedings/2003/246.md","bibtex":"https://ijcai.org/proceedings/2003/bibtex/246","volume":{"slug":"2003","title":"Proceedings of the Eighteenth International Joint Conference on Artificial Intelligence","short_title":"IJCAI 2003","url":"https://ijcai.org/proceedings/2003/","year":2003,"location":"Acapulco, Mexico","dates":"","editors":"Georg Gottlob","isbn":"","publisher":"International Joint Conferences on Artificial Intelligence","doi_prefix":""},"section":null,"track":"","number":246,"pages":{"first":1489,"last":1490},"keywords":[],"videos":[],"references":[],"license_note":"Copyright International Joint Conferences on Artificial Intelligence."}