In this paper, we select eight indicators from the aspects of an enterprise’s bill transaction information, namely, whether the enterprise’s loan is in breach of contract, effective invoice rate, total utilization rate of price and tax, negative invoice rate, strength of enterprise, coefficient of variation, flow efficiency of assets, and influence of upstream and downstream enterprises; then, we construct an evaluation index system. According to different industries, different categories, and the impact of random factors, we divide the types of enterprises into 10 categories. Then, we use three kinds of Poisson random numbers to carry out numerical simulation on the total price and tax of enterprises in different industries under the influence of COVID-19.

中文翻译：

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基于随机因素的中小微企业信用多目标规划策略

本文从企业票据交易信息方面选取8个指标，即企业贷款是否违约、有效发票率、价税总利用率、负发票率、企业实力、变异系数、资产流动效率、上下游企业影响；然后，我们构建了一个评价指标体系。根据不同行业、不同类别以及随机因素的影响，我们将企业类型分为10类。然后，我们使用三种泊松随机数对 COVID-19 影响下不同行业企业的总价税进行数值模拟。