The Ph.D. degree is the highest form of academic accomplishment. The Ph.D. dissertations below present some of the most advanced research being done at the time of their publication.
2001
| Graduate | Advisor(s) | Dissertation | Employer Upon Graduation |
| Yan Qu | Carbonell, Green | A Constraint-Based Model of Mixed-Initiative Dialogue for Information-Seeking Interactions | Clairvoyance |
| Laura Tomokiyo | Waibel | Recognizing Non-Native Speech: Characterizing and Adapting to Non-Native Usage in Speech Recognition | Cepstral |
| Klaus Zechner | Waibel | Automatic Summarization of Spoken Dialogues in Unrestricted Domains | Educational Testing Service |
2000
| Graduate | Advisor(s) | Dissertation | Employer Upon Graduation |
| Gregory Aist | Mostow | Helping Children Learn Vocabulary During Computer-Assisted Oral Reading | |
| Marsal Gavalda | Waibel | Growing Semantic Grammars | Dictaphone |
| Gerald Penn | Carpenter | The Algebraic Structure of Attributed Type Signatures | Associate Professor, University of Toronto |
| Akira Ushioda | Carbonell, Lafferty | Word and Compound Clustering for Natural Language Processing | Fujitsu |
1999
| Graduate | Advisor(s) | Dissertation | Employer Upon Graduation |
| Thomas Polzin | Waibel | Detecting Verbal and Non-verbal Cues in the Communication of Emotions | ISI (Speech Company) |
1998
| Graduate | Advisor(s) | Dissertation | Employer Upon Graduation |
| Ye Yi Wang | Waibel | Grammar Inference and Statistical Machine Translation | Microsoft Corporation |
1997
| Graduate | Advisor(s) | Dissertation | Employer Upon Graduation |
| Stephen Beale | Nirenburg | Hunter-Gatherer: Applying Constraint Satisfaction, Branch-and-Bound and Solution Synthesis to Computational Semantics | Faculty, New Mexico State University |
| Boyan Onyshkevych | Nirenburg | An Ontological-Semantic Framework for Text Analysis | U.S. Government |
| Carolyn Rosé | Levin | Robust Interactive Dialogue Interpretation | Faculty, LTI CMU |