Abstract: This paper studies a software trustworthiness evaluation model, considering the correlation of information sources.Firstly, an improved Denoeux cautious conjunctive rule and a horizontal evidence combination algorithm are introduced.Secondly, an association coefficient is defined to the index or group opinion aggregation.Finally, on the analysis of objective problems, such as information uncertainty and correlation of information sources in the process of evaluation, a software trustworthiness evaluation model based on evidence theory is proposed.Experimental results show the rationality and validity of the model.

Key words: software trustworthiness, correlation of information sources, evidence theory, evaluation model