Artificial intelligence publications
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Using Information Extraction to Improve Information Retrieval
The authors describe an approach to applying a particular kind of Natural Language Processing NLP system to the TREC routing task in Information Retrieval IR.
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Diagrammatic Methods for Deriving and Relating Temporal Neural Network Algorithms
We present an alternative approach based on a set of simple block diagram manipulation rules. The approach provides a common framework to derive popular algorithms including backpropagation and backpropagation-through-time, without…
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Using Differential Constraints to Reconstruct Complex Surfaces from Stereo
Stereo reconstruction algorithms often fail to properly deal with complex surfaces, because there is not enough image information. We propose to guide the reconstruction process using a priori information about…
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A Collaborative Environment for Authoring Large Knowledge Bases
Collaborative knowledge base (KB) authoring environments are critical for the construction of high-performance KBs. In this paper, we present an environment that satisfies many of these goals.
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Estimation of Equilibrium Constants Using Automated Group Contribution Methods
Group contribution methods are frequently used for estimating physical properties of compounds from their molecular structures. An algorithm for estimating Gibbs energies of formation through group contribution methods has been…
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EcoCyc: Enyclopedia of Escherichia coli Genes and Metabolism
The Encyclopedia of Genes and Metabolism (EcoCyc) is a database that combines information about the genome and the intermediary metabolism of Escherichia coli.
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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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The Saphira Architecture: A Design for Autonomy
Autonomy has many different aspects; here we concentrate on three central ones: the ability to attend to another agent, to take advice about the environment, and to carry out assigned…
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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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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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A chemical assessment and HPLC assay validation of bulk paromomycin sulfate
This paper describes the compositional analyses of four paromomycin sulfate samples and features a validated HPLC assay method that relies on the fluorescence detection of isoindole derivatives of paromomycin, formed…
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The complete genome sequence of the gastric pathogen Helicobacter pylori
Sequence analysis indicates that H. pylori has well-developed systems for motility, for scavenging iron, and for DNA restriction and modification.