David Alexander

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Automatic knowledge base population from text is an important technology for a broad range of approaches to learning by reading. Effective automated knowledge base population depends critically upon coreference resolution of entities across sources. Use of a wide range of features, both those that capture evidence for entity merging and those that argue(More)
This paper presents three case-based reasoning (CBR) prototypes developed for the RoboCats, a team of five soccer playing robots in the RoboCup small size league. CBR is used to help the RoboCats plan individual moves and team strategies, as well as to model the world of the playing field. More specifically, the case-based reasoners position the goalie,(More)
Psychology moved beyond the stimulus response mapping of behaviorism by adopting an information processing framework. This shift from behavioral to cognitive science was partly inspired by work demonstrating that the concept of information could be defined and quantified (Shannon, 1948). This transition developed further from cognitive science into(More)
We describe a set of techniques for Arabic cross-document coreference resolution. We compare a baseline system of exact mention string-matching to ones that include local mention context information as well as information from an existing machine translation system. It turns out that the machine translation-based technique outperforms the baseline, but(More)
We describe a set of techniques for Arabic cross-document coreference resolution. We compare a baseline system of exact mention string-matching to ones that include local mention context information as well as information from an existing machine translation system. It turns out that the machine translation-based technique outperforms the baseline, but(More)
INEX investigates focused retrieval from structured documents by providing large test collections of structured documents, uniform evaluation measures, and a forum for organizations to compare their results. This paper reports on the INEX 2010 evaluation campaign, which consisted of a wide range of tracks: Ad Hoc, Book, Data Centric, Interactive, QA, Link(More)
A hardened version of Texas Instruments'' VC33 Digital Signal Processor was created without any mask changes. The commercial mask set was processed using Silicon Space Technology''s HardSIL™ process variant to produce the hardened version. Radiation testing of the resulting hardened circuit demonstrated significant improvement in performance.