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In risk analysis in health insurance, one fundamental duty is to classify the insured into the risk categories which are essentially the vague concepts. A defining feature of vague concepts that their boundaries are uncertain. Inthis paper, we take a prototype theory approach to represent risk categories. In this representation, each label is associated with a prototype and has a probability density...
The insurance credit evaluation often involves qualitative and quantitative information. This paper presents a unified framework to synthesize and aggregate them. In this framework, the qualitative information is expressed by the linguistic labels or expressions, and the quantitative information is expressed by the numerical values. The semantics of linguistic expression is described by a semantic...
The risk evaluation problem of insurance companies often has two prominent characteristics: one is that there are multiple risk attributes with the different weights, the other is that the risk evaluations are the natural words or qualitative descriptions. The latter characteristic provides a big challenge for the qualitative aggregation method. This paper presents a new method to deal with this problem...
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