About:

Abraham has worked on a world champion robotic soccer team, a publish-subscribe system for location-based services, and single-agent search algorithms. Prior to attending the University of Toronto, he explored high-performance processing of XML at the IBM T.J. Watson Research Center. Currently, he applies classical artificial intelligence techniques to organic synthesis planning and builds tools for protein active-site analysis.

Projects:

Computer-Assisted Organic Synthesis Planning - Tools to simplify drug discovery, design and production. In collaboration with Malcolm Bersohn and Izhar Wallach.

LigAlign - Automated Ligand-Based Active Site Alignment. Poster presented at ISMB2008. [PDF]

Matsa, M., Perkins, E., Heifets, A., Kostoulas M. G., Silva, D., Mendelsohn, N., Leger, M. A High-Performance Interpretive Approach to Schema-Directed Parsing. Proceedings of the 16th International Conference on World Wide Web (Banff, Canada, May 8 - 12, 2007). WWW '07. ACM Press, New York, NY, 1093-1102. Presented at WWW2007. [PDF]
Kostoulas, M. G., Matsa, M., Mendelsohn, N., Perkins, E., Heifets, A., and Mercaldi, M. XML Screamer: an integrated approach to high performance XML parsing, validation and deserialization. Proceedings of the 15th International Conference on World Wide Web (Edinburgh, Scotland, May 23 - 26, 2006). WWW '06. ACM Press, New York, NY, 93-102. Nominated for Best Paper Award. [PDF]
Perkins, E., Matsa, M., Kostoulas, M. G., Heifets, A., and Mendelsohn, N. 2006. Generation of efficient parsers through direct compilation of XML Schema grammars. IBM Systems Journal 45(2):225-245. 2006. [PDF]
Perkins, E., Kostoulas, M. G., Heifets, A., Matsa, M., Mendelsohn, N. Performance Analysis of XML APIs. Proceedings of the XML 2005 Conference and Exposition (November 14-18, 2005). XML2005. [PDF]

Babu, A., Heifets, A., Krauszer, A., Paterson, R., White Eagle, B., System and method for aggregating information to determine users' locations. US Patent 7,139,252. Granted November 21, 2006.
Babu, A., Heifets, A., Krauszer, A., Paterson, R., White Eagle, B., System and method for handling location information. US Patent Application 20020143930. Filed October 3, 2002.
Quan, D., Perkins, E., Murthy, C., Heifets, A., Kesselman, J., Matsa, M., Methods and apparatus for views of input specialized references. US Patent Application 20080034010. Filed August 7, 2006.
Heifets, A., Kostoulas, M., Matsa, M., Perkins, E., High-level Virtual Machine for Fast XML Parsing and Validation. US Patent Application 20080104592. Filed June 5, 2007.
Heifets, A., Kostoulas, M., Matsa, M., Perkins, E., Schema Specific Parser Generation. US Patent Application 20080104105. Filed June 5, 2007.
Heifets, A., Kostoulas, M., Matsa, M., Perkins, E., Orthogonal Integration of De-serialization into an Interpretive Validating XML Parser. US Patent Application 20080104095. Filed June 5, 2007.