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The reserch of land appraisal is very special domain,because
the juncture of appraisal results is the proficient judgement
of the appraiser. This study tries to set up Expert System to
help land appraisal process by organize the experts'' knowledge
and establish the computerizational process used its
characteristics of symbol inference. We build up the learning
ability with the viewpoint of "Learning From Example" to learn
the knowledge how to appraise for alleviate the burden of
acquire knowledge and judge the results of inference to make
the process conincide the thought of experts.For the
representation and inference of know- ledge, we try to apply
"Fuzzy Theory" as to deal with the uncer- tainty factors to
avoid the problem of combinational explosion. Moreover, we make
the system take information to inference auto- matically and
more efficient through connecting with correlative information
systems. The Expert System phototype of urban land appraisal we
have set up two steps systematical with the viewpoint of
Comparative Sales Method, and have established three secondary
system, almost three hundred rules.The first step, it judge the
land value level by area factor analysis,then judge the land
value by land indivi- dual factor analysis. The second step,
appraise the land price is according to how to modify money by
learning with the method of approximate reasoning used the
results of the first step. We hope that it can assist the
appraisal process of public by appraise land price
automatically after clutchs the area factors and land
individual factors, and make the process can not only be
limited numeric compute but also judge the knowledge like
experts by com- puter aided, increase the efficience and make
the results more objective and reasonable in the future.
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