Sanders, K.E., CHIRON: Planning in an Open-Textured Domain, Technical report 94-38, Computer Science Department, Brown university, (1994).  Home/Search   Document Details and Download   Summary   Related Articles   Check

....structures exist in the case content and must be encoded completely and expressively. The beauty of the graph structured representation is its power to show the inherent structures for cases in complex application domains such as university timetabling [8] transport logistics [9] tax planning [10], academic tutoring [11] design [12, 13] and scheduling [14] Graphs used by present CBR systems include attribute graphs (directed labelled graphs) semantic nets and conceptual graphs. In this research, we consider directed labelled graphs as the other two graph types can be transformed into ....

Sanders, K.E., CHIRON: Planning in an Open-Textured Domain, Technical report 94-38, Computer Science Department, Brown university, (1994).

.... rules that generate other category members at the spokes, and other category members along the rim [ Lakoff, 1987, pp.83 84 ] More recently in the law, Sanders applied a notion of example prototypes plus deformations of so called safe harbor plans to creating plans for income tax transactions [ Sanders, 1994 ] Safeharbor plans are stereotypical plans to achieve a certain result under the tax code. The ReMind CBR development shell [ Cognitive Systems, Inc. 1990 ] also incorporates a facility for the user to create prototypes to index a case base. Prototypes are combinations of simple predicates on ....

Sanders, K. E. 1994. Chiron: planning in an open-textured domain. Technical Report 94-38, Computer Science Department, Brown University, Providence, RI. (PhD Thesis).

.... and contrasting it with cases that have already been classified (e.g. Ashley Rissland, 1987) For example, interpretive CBR plays a fundamental role in interpreting legal concepts and applying laws in the American legal system (e.g. Ashley, 1990; Bain, 1986; Branting, 1991; Cuthill, 1992; Sanders, 1994). A tax lawyer arguing that his or her client should receive a home office deduction does so by using precedents: by showing that the deduction was granted in similar previous cases and showing that those cases are more relevant than cases in which the deduction was not granted. Interpretive CBR ....

Sanders, K. 1994. Chiron: planning in an open-textured domain. Ph.D. Dissertation, Brown University. Computer Science Department Technical Report 94-38.

....Other systems that have used structure based representations include plexus [1] grebe [5] arcs [25] and sme [8] and cookie [20] These systems are described briefly in Section 5. 2 Overview of caper and chiron This section gives a brief overview of chiron and caper. Details can be found in [24] and [15] chiron is a hybrid rule based and case based system in the domain of tax planning. It uses rules and structured cases to solve a cluster of problems having to do with buying, selling, renting, and owning residential housing. chiron s knowledge base includes representations of part of ....

....every node has one or more such labels. Node labels correspond to unary predicates on a given object. For example, Hughston is a lawyer; house1 is both a house and real property; Shell Oil Company is a corporation; and so forth. For the actual representation and the original text of the case, see [24]. In this case, the taxpayer, Hughston, was a lawyer for Shell Oil, in Texas. 1 We use indexing to mean the use of pointers for case retrieval, rather than a more recent, broader interpretation of indexing that includes any domain knowledge used in the retrieval of cases (e.g. 18] tile ....

K. E. Sanders. Chiron: planning in an open-textured domain. Technical Report 94-38, Computer Science Department, Brown University, 1994. (PhD Thesis).

....for a year, you may try selling your house after six months. In other words, you will extrapolate from the cases in your casebase, rather than interpolating between them. 1 I have implemented this approach in chiron, a system that constructs plans in the domain of personal income tax planning [ Sanders, 1994 ] In Section 2 of this paper, I give an overview of the system; in Section 3, I describe the representation it uses for rules, cases, and other knowledge; in Section 4, I give a brief example; in Section 5 I discuss related work; and in Section 6, I summarize the results of this paper. 2 ....

.... is influenced by McDermott s temporal logic and also by the work of McCarty in representing legal concepts, especially [ McCarty, 1989b ] Part of the representation of one of chiron s cases is given in Figure 3; for the full representation of this case and the original text of the case, see [ Sanders, 1994 ] Associated with each strategy is a prototype. A prototype is represented using the same structure as a case, but with a conservative, safe set of facts, very likely to satisfy the open textured provisions setting forth that strategy. The prototypes facts are derived from general domain ....

Kathryn E. Sanders. Chiron: planning in an open-textured domain. Technical Report 9438, Computer Science Department, Brown University, 1994. (PhD Thesis).

....planning in two different domains. We discuss the costs associated with graph structured representations and describe an approach to reducing those costs, implemented in caper. 2 Overview of caper and chiron This section gives a brief overview of chiron and caper. Details can be found in [22] and [15] chiron is a hybrid rule based and case based system in the domain of tax planning. It uses rules and structured cases to solve a cluster of problems having to do with buying, selling, renting, and owning residential housing. chiron s knowledge base includes representations of part of ....

....every node has one or more such labels. Node labels correspond to unary predicates on a given object. For example, Hughston is a lawyer; house1 is both a house and real property; ShellOil Company is a corporation; and so forth. For the actual representation and the original text of the case, see [22]. In this case, the taxpayer, Hughston, was a lawyer for Shell Oil, in Texas. When he was transferred to a new location in Texas, he sold his old house (which had a bathroom with a tile floor) and bought another, closer to his new place of work. He had three children, of whom the oldest was ten ....

K. E. Sanders. Chiron: planning in an open-textured domain. Technical Report 94-38, Computer Science Department, Brown University, 1994. (PhD Thesis).

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Sanders, K. E. 1994. CHIRON: planning in an open-textured domain. Ph.D. Dissertation, Computer Science Department, Brown University, Providence, RI.

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