KSL-86-33 + redirect page
The Myth of Modularity in Rule-Based Systems for Reasoning with Uncertainty + Has identifier
The Myth of Modularity in Rule-Based Systems for Reasoning with Uncertainty + Ksl tr id
The Myth of Modularity in Rule-Based Systems for Reasoning with Uncertainty + Number
| The Myth of Modularity in Rule-Based Systems for Reasoning with Uncertainty |
Bibtype
techreport
Has publishing details
1986
Has title
The Myth of Modularity in Rule-Based Systems for Reasoning with Uncertainty
Has where published
KSL-86-33
Has year
1986
Title
The Myth of Modularity in Rule-Based Systems for Reasoning with Uncertainty
Year
1986
Abstract
In this paper, we examine the concepts of … In this paper, we examine the concepts of modularity, an often cited advantage of the rule-based representation methodology. We argue that the notion of modularity consists of two distinct concepts which we call syntactic modularity and semantic modularity. We argue that when reasoning under certainty, it is reasonable to regard the rule-based approach as both syntactically and semantically modular. However, we argue that in the case of plausible reasoning, rules are syntactically modular but are rarely semantically modular. To illustrate this point, we examine a particular approach for managing uncertainty in rule-based systems called the MYCIN certainty factory model. We formally define the concept of semantic modularity with respect to the certainty factor model and discuss logical consequences of the definition. We show that the assumption of semantic modularity imposes strong restrictions on rules in a knowledge base. We argue that such restrictions are rarely valid in practical applications. Finally, we suggest how the concept of semantic modularity can be relaxed in a manner that makes it appropriate for plausible reasoning. es it appropriate for plausible reasoning.
Author
David Heckerman and Eric Horvitz +
Has author
David Heckerman and Eric Horvitz +
Has identifier
The Myth of Modularity in Rule-Based Systems for Reasoning with Uncertainty +
Institution
Knowledge Systems, AI Laboratory +
Ksl tr id
The Myth of Modularity in Rule-Based Systems for Reasoning with Uncertainty +
Number
The Myth of Modularity in Rule-Based Systems for Reasoning with Uncertainty +
Process note
YES +
Categories KSL Technical Report +, Publication +, Technical Report +
|
