Publications
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Applied Logic – It’s use and implementation as a programming tool
The ideas are illustrated by describing in detail one sizable prologue program which implements a simple compiler the advantages and practicability of using prologue for real compiler implementation are discussed.
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The Relationship Between Image Irradiance and Surface Orientation
A formulation of shape from shading is presented in which surface orientation is related to image irradiance without requiring detailed knowledge of either the scene illumination or the albedo of…
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Applied Logic and Its Use and Implementation As A Programming Tool
The first part of the thesis explains from first principles the concept of "logic programming’’ and its practical application in the programming language Prolog.
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Parsing As Deduction
By exploring the relationship between parsing and deduction, a new and more general view of chart parsing is obtained, which encompasses parsing for grammar formalisms based on unification, and is…
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A Prolegomenon to Situation Semantics
An attempt is made to compare Computational Linguistics with Situational Semantics.
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Providing A Unified Account Of Definite Noun Phrases In Discourse
This paper focuses on the use of various referring expressions such as definite noun phrases and pronouns and examines their interaction with mechanisms used to maintain discourse coherence.
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Semantical Considerations On Nonmonotonic Logic
We define an intuitively based semantics for which we can show autoepistemic logic to be both sound and complete. We then compare autoepistemic logic with the approach of McDermott and…
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Can Drawing Be Liberated From The Von Neumann Style?
Current graphics database tools give the user a view of drawing that is too constrained by the low-level machine operations used to implement the tools. A new approach to graphics…
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Telegram: A Grammar Formalism For Language Planning
The TELEGRAM system described in this paper solves this problem by annotating a unification grammar with assertions about how grammatical choices are used to achieve various goals, and by enabling…
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A Framework For Processing Partially Free Word Order
The linguistic framework of Generalized Phrase Structure Grammar offers tools for dealing with word order variation. Some slight modifications to the framework allow for an analysis of the German data…
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Shape From Shading: An Assessment
In dealing with the question of what surface parameters can be recovered locally from image shading, we show that, at most, shading determines relative surface curvature, i.e., the ratio of…
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Formal Constraints On Metarules
We evaluate several proposals for constraining them, basing our assessment on computational tractability and explanatory adequacy. We show that none of them satisfies both criteria, and suggest new directions for…