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2006

Cutumisu, Maria, Szafron, Duane, Roy, Thomas, Carbonaro, Mike, McNaughton, Matthew, Schaeffer, Jonathan, Onuczko, Curtis

Many computer games use custom scripts to control the ambient behaviors of non-player characters (NPCs). Therefore, a story writer must write fragments of computer code for the hundreds or thousands of NPCs in the game world. The challenge is to create entertaining and non-repetitive behaviors...

2008

Schaeffer, Jonathan, Cutumisu, Maria, Waugh, Kevin, Siegel, Jeff, Szafron, Duane, Schumacher, Allan, Duff, Harvey, Gillis, Stephanie, Carbonaro, Mike, Onuczko, Curtis

The unprecedented growth in numbers of children playing computer games has stimulated discussion and research regarding what, if any, educational value these games have for teaching and learning. The research on this topic has primarily focused on children as players of computer games rather than...

1992

Schaeffer, Jonathan

Technical report TR92-19. In August 1992, the first man versus machine world championship took place. The champion, Dr. Marion Tinsley, is arguably the greatest checkers player that ever lived. The challenger was the computer checkers program Chinook, a 3 year team effort from the University of...

1996

Li, John, Ozsu, M. Tamer, Szafron, Duane

Technical report TR96-12. Modeling moving objects has become a topic of increasing interest in the area of video databases. Two key aspects of such modeling are object spatial and temporal relationships. In this paper we introduce an innovative way to represent the trajectory of a single...

1996

Goralwalla, Iqbal, Ozsu, M. Tamer, Leontiev, Yuri, Szafron, Duane

Technical report TR96-03. Most of the work in modeling time in information systems has concentrated on issues such as support for historical information and providing query facilities to manipulate such information. In doing so, some simplistic view of the underling nature of time has been...

1996

Ozsu, M. Tamer, Li, John, Szafron, Duane

Technical report TR96-06. Video modeling has become a topic of increasing interest in the area of multimedia research. One of the key aspects in the video medium is spatial relationships. In this paper we propose a spatial representation, based on the temporal interval algebra, for specifying...

1998

Pang, Candy, Leontiev, Yuri, Holst, Wade, Szafron, Duane

Technical report TR98-12. Multiple Row Displacement (MRD) is a new dispatch technique for multi-method languages. It is based on compressing an n-dimensional table using an extension of the single-receiver row displacement mechanism. This paper presents the new algorithm and provides...

1997

Ozsu, M. Tamer, Li, John, Szafron, Duane

Technical report TR97-01. Declarative query languages are an important feature of database management systems and have played an important role in their success. As database management technology enters the multimedia information system domain, the availability of query languages for multimedia...

1994

de Bruin, Arie, Pijls, Wim, Schaeffer, Jonathan, Plaat, Aske

Technical report TR94-19. Knuth and Moore presented a theoretical lower bound on the number of leaves that any fixed-depth minimax tree-search algorithm traversing a uniform tree must explore, the so-called minimal tree Since real-life minimax trees aren't uniform, the exact size of this tree...

1998

Ozsu, M. Tamer, Szafron, Duane, Leontiev, Yuri

Technical report TR98-02. In this paper we present a model that supports a clean separation between the concepts of interface, implementation, and representation. We present several problems that are difficult to solve in the absence of such separation and describe how the proposed model can be...