2015
Examining political mobilization of online communities through e-petitioning behavior in <i>We the People</i>.
Big Data Soc., December, 2015

Identifying risk factors for heart disease over time: Overview of 2014 i2b2/UTHealth shared task Track 2.
J. Biomed. Informatics, 2015

Automated systems for the de-identification of longitudinal clinical narratives: Overview of 2014 i2b2/UTHealth shared task Track 1.
J. Biomed. Informatics, 2015

A systematic comparison of feature space effects on disease classifier performance for phenotype identification of five diseases.
J. Biomed. Informatics, 2015

Understanding Citizens' Direct Policy Suggestions to the Federal Government: A Natural Language Processing and Topic Modeling Approach.
Proceedings of the 48th Hawaii International Conference on System Sciences, 2015

Introducing textual analysis tools for policy informatics: a case study of e-petitions.
Proceedings of the 16th Annual International Conference on Digital Government Research, 2015

Challenges in Synthesizing Surrogate PHI in Narrative EMRs.
Proceedings of the Medical Data Privacy Handbook, 2015

2006
TreePlus: Interactive Exploration of Networks with Enhanced Tree Layouts.
IEEE Trans. Vis. Comput. Graph., 2006