如果企业存在一个连续交易的数据，我们就可以通过市场信息对企业的价值进行估计，通过企业的价值变化反映信用状况的变化。

If the company has a continuum trade data in the open market, we can estimate the market value of the company and get the credit situation by the volatility of them.

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选取了1 5家上市公司，使用其股票价格历史数据和财务报表数据计算各家公司的“违约距离”，从而对它们的信用状况进行比较。

Then, the paper selects 15 listed companies, analyzes their "Distance to Default" using their stock prices and their financial statement data, and compares their credit status.

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