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PrediCalc: a logical spreadsheet management system

Published online by Cambridge University Press:  01 September 2007

MICHAEL KASSOFF  and
MICHAEL R. GENESERETH
MICHAEL KASSOFF
Affiliation:
Gates Hall, Computer Science Department, Stanford University, Stanford, CA 94305, USA e-mail: mkassoff@stanford.edu, genesereth@stanford.edu
MICHAEL R. GENESERETH
Affiliation:
Gates Hall, Computer Science Department, Stanford University, Stanford, CA 94305, USA e-mail: mkassoff@stanford.edu, genesereth@stanford.edu
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Abstract

In this article, we describe PrediCalc, a logical spreadsheet that allows for many-to-many constraints and propagation in all directions. We explain PrediCalc’s update mechanism and PrediCalc’s unique approach to handling inconsistencies between the spreadsheet values and the spreadsheet formulas. We have developed a paraconsistent entailment relation for the purpose of computing the consequences of PrediCalc’s value assignments under inconsistency.

We close with thoughts on the prospects of logical spreadsheets on the World Wide Web, and describe our initial Websheet prototypes.

Type
Research Article
Information
The Knowledge Engineering Review , Volume 22 , Issue 3 , September 2007 , pp. 281 - 295
Copyright
Copyright © Cambridge University Press 2007

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