@article{jointtopicmodelingandfactoranalysisof,
  title = {Joint Topic Modeling and Factor Analysis of Textual Information and Graded Response Data},
  author = {Andrew S. Lan and Christoph Studer and Andrew E. Waters and Richard G. Baraniuk},
  year = {2013},
  eprint = {1305.1956},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1305.1956v2},
}