Research Article
Construction and Application Research of Isomap-RVM Credit Assessment Model
Table 1
Sample size of listed companies.
| ST implementation year | 2009 | 2010 | 2011 | 2012 | 2013 | Total |
| ST companies | 26 | 36 | 13 | 22 | 19 | 116 | Non-ST companies | 78 | 108 | 39 | 66 | 57 | 348 |
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