送交者: xj 于 2005-4-11, 13:33:32:
回答: 预测准确率50%左右的一律按巫术论处。怎么也得有个百分之六七十吧 由 随便 于 2005-4-11, 13:25:56:
the cross-validation has not been widely used in social science but I did see many predictive error rates at the level of 0.75.
However, there are lots of models with R^2 0.20,the models are even not internally valid, how much can you expect its predictibility?