Publications
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On the determination of epipoles using cross-ratios
We study the problem of computing the position of the epipoles in a pair of uncalibrated images. The approach, which is based on the invariance of the cross-ratio by the…
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Abductive Completion of Plan Sketches
With the objective of fostering increased user participation in the planning process, this paper presents an HTN-based framework for the abductive completion of plan sketches. Within this framework, user-supplied outlines…
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WebWatcher: A Tour Guide for the World Wide Web
We explore the notion of a tour guide software agent for assisting users browsing the World Wide Web. This paper describes a simple but operational tour guide, called WebWatcher, which…
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Secondary-Postsecondary Linkages: The Missing Link In School-To-Work Initiatives
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Using SIPE-2 to integrate planning for military air campaigns
Keywords: Artificial Intelligence, Artificial Intelligence Center, AIC
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The Saphira Architecture for Autonomous Mobile Robots
Mobile robots, if they are to perform useful tasks and become accepted in open environments, must be autonomous: capable of acquiring information and performing tasks without programmatic intervention.
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Handling Compound Nouns in a Swedish Speech-Understanding System
This paper describes and evaluates a simple and general solution to the handling of compound nouns in Swedish and other languages in which compounds can be formed by concatenation of…
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Disfluencies in Switchboard
Disfluencies are prevalent in spontaneous speech, and are relevant to both human speech communication and speech processing by machine. This paper reports selected results on Switchboard and two comparison corpora…
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Automatic Linguistic Segmentation of Conversational Speech
We present a simple automatic segmenter of transcripts based on N-gram language modeling. We also study the relevance of several word-level features for segmentation performance. Using only word-level information, we…
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Word Predictability After Hesitations: A Corpus-based Study
We ask whether lexical hesitations in spontaneous speech tend to precede words that are difficult to predict. We define predictability in terms of both transition probability and entropy, in the…
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Modeling Pitch Range Variation Within and Across Speakers: Predicting F0 Targets when “Speaking Up”
We study F0 variation produced by "speaking up", as part of a larger study of pitch range variation within and across speakers. We provide a function to predict target F0…
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Unusual ribulose-1,5-bisphosphate carboxylase/oxygenase genes from a marine manganese-oxidizing bacterium
Initial DNA hybridization screening showed that SI85-9A1 possesses a gene similar to cbbL, the gene coding for the large subunit of ribulose-1,5-bisphosphate carboxylase/oxygenase (RubisCO; EC 4.1.1.39). However, no RubisCO enzyme activity was…