关键词: 决策形式背景, 证据理论, 基本信度分配, 证据权重, 证据合成法则

Abstract: In order to resolve the problems that exist in the decision-making process in respect of the application of evidence theory such as the difficulty to acquire evidence, the different weight of evidence, this paper aims to provide an evidence reasoning model based on the combination of objective data and subjective knowledge under the framework of decision format. In the model, each condition attribute within the decision format will be treated as evidence, and evidence will also be extracted from the underlying information of the decision formal context, thus acquiring the function of basic probability assignment so as to modify the integrated formula by introducing evidence weighting. Simulated results and relevant analysis indicate that the proposed method is effective.

Key words: decision formal context, evidence theory, Basic Probability Assignment（BPA）, weight of evidence, evidence combination rule