Richard A. Caruana

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The effectiveness of combinatorial search heuristics, such as Genetic Algorithms (GA), is limited by their ability to balance the need for a diverse set of sampling points with the desire to quickly focus search upon potential solutions. One of the methods often used to address this problem is to simulate the theory of punctuated equilibria in the GA. The(More)
The recent series of anthrax attacks has reinforced the importance of biosurveillance systems for the timely detection of epidemics. This paper describes a statistical framework for monitoring grocery data to detect a large-scale but localized bioterrorism attack. Our system illustrates the potential of data sources that may be more timely than traditional(More)
A surge of development of new public health surveillance systems designed to provide more timely detection of outbreaks suggests that public health has a new requirement: extreme timeliness of detection. The authors review previous work relevant to measuring timeliness and to defining timeliness requirements. Using signal detection theory and decision(More)
The use of numerical uncertainty representations allows better modeling of some aspects of human evidential reasoning. It also makes knowledge acquisition and sys­ tem development, test, and modification more difficult. We propose that where possible, the assignment and/or refinement of rule weights should be performed automatically. We present one approach(More)
The effectiveness of combinatorial search heuristics, such as Genetic Algorithms (GA), is limited by their ability to balance the need for a diverse set of sampling points with the desire to quickly focus search upon potential solutions. One of the methods often used to address this problem is to simulate the theory of punctuated equilibria in the GA. The(More)
According to Ta ta r , the main purpose of A Programmer's Guide to COMMON LISP is "to guide p rogrammers through the first difficult stages of learning LISP." It is most appropr ia te for those seeing LISP for the first t ime, or for those who have used LISP but are not familiar wi th Common LISP and might find COMMON LISP: The Language by Guy Steele, Jr.(More)
The effectiveness of combinatorial search heuristics, such as Genetic Algorithms (GA), is limited by their ability to balance the need for a diverse set of sampling points with the desire to quickly focus search upon potential solutions. One of the methods often used to address this problem is to simulate the theory of punctuated equilibria in the GA. The(More)