Abstract:

In order to solve the problems that traditional evidence conflict measurement methods can not express the difference of mutual conflict degrees between evidences and work poorly under special situation, a directional evidence conflict measurement based on the improved cosine similarity is proposed. By importing the support coefficient matrix into the cosine similarity model, the proposed model can be asymmetrical, so that the difference of mutual conflict degrees between evidences can be expressed, and the problem that the basic cosine similarity model is not suitable to measure the evidence conflict when the evidences include multisubset focal -elements can be overcame. Simulation results show that the proposed method is effective and accurate.