picard
第6楼2012/05/24
下面是在Unscrambler的帮助文件中找到的说明,根据其描述验证集应该是Test matrix。
Leverage
Correction A method used as a first pass model check. This should not to be used as a final model validation method, as it an overly optimistic approximation.
Cross Validation
This method is used when either there are not enough samples available to make a separate test set, or for simulating the effects of different validation test cases, e.g. systematically leaving samples out vs. randomly leaving samples out, etc. See Cross validation setup dialog usage
Test matrix
This is also known as Test Set Validation, and uses independent samples that have not taken part in the calibration for validation. This allows one to define either a new matrix, of the same number of variables, or a defined range within a single matrix to be used as an independent check of model performance. Both X- and Y-matrices need to be defined in this case. This is the preferred method for validation and should be aimed for.
tearguodong
第7楼2012/05/24
。
我看了帮助,不过我英语不好。我有些没有看明白。我不知道第一和第三用在哪些方面。我只知道第二个是交叉验证