Mr. Stephyn Butcher

Computer Science

Current Courses

Personal Bio

Stephyn Butcher is a Data Product Solutions Engineer for Appriss Safety where he works on data driven prototypes geared to serve specific client needs. He was formerly a Senior Software Engineer for ThreatGRID, a division of Cisco, which focused on malware detection. He has worked as a Data Scientist/Engineer for Clubhouse Software, LivingSocial, NIH/HPCIO and Mercury Analytics. A long time ago, in a galaxy far, far away, he as an Economist (but he got better).

He is a Doctoral Student in Computer Science at the Johns Hopkins University, Baltimore, Maryland, Homewood campus.

He has taught Machine Learning (Homewood), Artificial Intelligence (EP), Reasoning Under Uncertainty (EP) and Data Science (EP). He has an MS in Computer Science, an MA in Economics and a BA in Economics. His dissertation research focuses on swarm intelligence. His research interests include games programming, machine learning, programming languages, software engineering and statistics.

He is also an ordained Zen priest.

Education History

  • BA Economics, California State University, Sacramento
  • MA Economics, The American University
  • MS Computer Science, Johns Hopkins University
  • Ph. D. Computer Science, Johns Hopkins University

Work Experience

Data Scientist, Appriss Safety

Publications

Strasser, Shane, Rollie Goodman, John Sheppard, and Stephyn Butcher. "A New Discrete Particle Swarm Optimization Algorithm." In Proceedings of the 2016 on Genetic and Evolutionary Computation Conference, pp. 53-60. ACM, 2016.

Butcher, Stephyn, Shane Strasser, Jenna Hoole, Benjamin Demeo, and John Sheppard. "Relaxing Consensus in Distributed Factored Evolutionary Algorithms." In Proceedings of the 2016 on Genetic and Evolutionary Computation Conference, pp. 5-12. ACM, 2016.

John W. Sheppard, Stephyn G. W. Butcher and Patrick J. Donnelly, "Demonstrating semantic interoperability of diagnostic reasoners via AI-ESTATE", Proceedings of the IEEE: IEEE Aerospace Conference, Big Sky, MT, March 2010. p. 1-10.

John W. Sheppard, Stephyn G. W. Butcher and Patrick J. Donnelly, "Standard Diagnostic Services for the ATS framework", IEEE AUTOTESTCON 2009 Conference Record, Baltimore, MD, September 2009. p 393-400.

John W. Sheppard, Stephyn G. W. Butcher, Patrick J. Donnelly, and Benjamin R. Mitchell, "Demonstrating Semantic Interoperability of Diagnostic Models via AI-ESTATE", Proceedings of the IEEE: IEEE Aerospace Conference, Big Sky, MT, March 2009.

Stephyn G. W. Butcher and John W. Sheppard, "Asset-Specific Bayesian Diagnostics in Mixed Contexts". IEEE AUTOTESTCON 2007 Conference Record, Baltimore, MD, September 2007.

Stephyn G. W. Butcher and John W. Sheppard, "Improving Diagnostic Accuracy by Blending Probabilities: Some Initial Experiments", Proceedings of the 18th International Workshop on Principles of Diagnosis (DX-07), Nashville, TN, May 2007

Stephyn G. W. Butcher, John W. Sheppard, Mark A. Kaufman, Hanh Ha, and Craig MacDougall, "Experiments in Bayesian Diagnostics with IUID-Enabled Data,", IEEE AUTOTESTCON 2006 Conference Record, Anaheim, California, September 2006, pp. 605-614

John W. Sheppard and Stephyn G. W. Butcher, "On the Linear Separability of Diagnostic Models,", IEEE AUTOTESTCON 2006 Conference Record, Anaheim, California, September 2006, pp. 626-635.

John W. Sheppard, Stephyn G. W. Butcher, Mark A. Kaufman, and Craig MacDougall, "Not-So-Naive Bayesian Networks and Unique Identification in Developing Advanced Diagnostics," Proceedings of the IEEE Aerospace Conference, Big Sky, Montana, March 2006.