[回归分析求助] probit回归 [推广有奖]

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lucywitherspoon 发表于 2011-4-23 20:42:03 |AI写论文

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请问各位：我在用probit回归的时候，出现如下结果，但是就是一直出不来结果，是怎么回事呢
Iteration 0: log likelihood =  -3040.353
Iteration 1: log likelihood = -2255.4113
Iteration 2: log likelihood = -2234.2656
Iteration 3: log likelihood = -2234.1027
Iteration 4: log likelihood = -2234.0995
Iteration 5: log likelihood = -2234.0992
Iteration 6: log likelihood = -2234.0992  (not concave)
Iteration 7: log likelihood = -2234.0992  (not concave)
Iteration 8: log likelihood = -2234.0992  (not concave)
Iteration 9: log likelihood = -2234.0992  (not concave)
Iteration 10:  log likelihood = -2234.0992  (not concave)
Iteration 11:  log likelihood = -2234.0992  (not concave)
Iteration 12:  log likelihood = -2234.0992  (not concave)
Iteration 13:  log likelihood = -2234.0992  (not concave)
Iteration 14:  log likelihood = -2234.0992  (not concave)
Iteration 15:  log likelihood = -2234.0992  (not concave)
Iteration 16:  log likelihood = -2234.0992  (not concave)
Iteration 17:  log likelihood = -2234.0992  (not concave)
Iteration 18:  log likelihood = -2234.0992  (not concave)
Iteration 19:  log likelihood = -2234.0992  (not concave)
Iteration 20:  log likelihood = -2234.0992  (not concave)
Iteration 21:  log likelihood = -2234.0992  (not concave)
Iteration 22:  log likelihood = -2234.0992  (not concave)
Iteration 23:  log likelihood = -2234.0992  (not concave)
Iteration 24:  log likelihood = -2234.0992  (not concave)
Iteration 25:  log likelihood = -2234.0992  (not concave)
Iteration 26:  log likelihood = -2234.0992  (not concave)
--Break--