日本の上場企業における売上過大計上による不正会計の検知
—マハラノビス距離を用いた機械学習による方法—
東海林 和雄, 中村 亮介, 尾崎 幸謙
The purpose of this study is construction of the prediction model to discriminate incorrect accounting information. Two features of this research are to adopt methods of detecting auditing practices and to target for analysis that the accounting information which the sales are overestimated. Specifically, unlike in previous research, we approach to detect fraudulent means without uniform accounting phenomena for each fraudulent means. Furthermore, we applied accounting distortions and discomfort auditors feel as explanatory variables. This discomfort is measured by Mahalanobis distance. In the results of this analysis, the prediction model of machine learning that is adopted practical methods that detect incorrect accounting shows a high probability of fraud.