| 2012 | EACL | When Did that Happen? - Linking Events and Relations to Timestamps. | Dirk Hovy, James Fan, Alfio Massimiliano Gliozzo, Siddharth Patwardhan, Christopher A. Welty |
| 2011 | FlAIRS | Using Part-Of Relations for Discovering Causality. | Rutu Mulkar-Mehta, Christopher A. Welty, Jerry R. Hobbs, Eduard H. Hovy |
| 2006 | FOIS | OntOWLClean: Cleaning OWL ontologies with OWL. | Christopher A. Welty |
| 2006 | FOIS | A Reusable Ontology for Fluents in OWL. | Christopher A. Welty, Richard Fikes |
| 2006 | ICLP | Semantic Web: The Story of the RIFt so Far. | Christopher A. Welty |
| 2006 | WWW | Supporting online problem-solving communities with the semantic web. | Anupriya Ankolekar, Katia P. Sycara, James D. Herbsleb, Robert E. Kraut, Christopher A. Welty |
| 2004 | AAAI | Evaluating Ontology Cleaning. | Christopher A. Welty, Ruchi Mahindru, Jennifer Chu-Carroll |
| 2002 | CaiSE | Ontology-Driven Conceptual Modeling. | Christopher A. Welty |
| 2002 | KR | Panel: Are Upper-Level Ontologies Worth the Effort?. | Christopher A. Welty |
| 2001 | FOIS | FOIS introduction: Ontology - towards a new synthesis. | Barry Smith, Christopher A. Welty |
| 2000 | AAAI | Untangle: A New Ontology for Card Catalog Systems. | Christopher A. Welty, Jessica Jenkins |
| 2000 | ECAI | Identity, Unity, and Individuality: Towards a Formal Toolkit for Ontological Analysis. | Nicola Guarino, Christopher A. Welty |
| 2000 | EKAW | A Formal Ontology of Properties. | Nicola Guarino, Christopher A. Welty |
| 2000 | ER | Ontological Analysis of Taxonomic Relationships. | Nicola Guarino, Christopher A. Welty |
| 2000 | ER | Towards Ontology-Based Harmonization of Web Content Standards. | Nicola Guarino, Christopher A. Welty, Christopher Partridge |
| 1998 | FlAIRS | Teaching Bottom-up AI from the Top Down. | Christopher A. Welty, Kenneth Livingston, Calder Martin, Julie Hamilton, Christopher Rugger |