Understanding Learners' Opinion about Participation Certificates in Online Courses using Topic Modeling. - Gaurav Nanda; Nathan M. Hicks; David R. Waller; Kerrie Anna Douglas; Dan Goldwasser (EDM, 2018)

Analyzing Large Collections of Open-Ended Feedback From MOOC Learners Using LDA Topic Modeling and Qualitative Analysis. - Gaurav Nanda; Kerrie A. Douglas; David R. Waller; Hillary E. Merzdorf; Dan Goldwasser (IEEE Trans. Learn. Technol., 2021)