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Python超详细多元回归分析3:生成新变量

  • 2026-02-26 00:55:12
Python超详细多元回归分析3:生成新变量

我们接着用陈强老师《高级计量经济学》第二版的数据。为了回归的需要，我们常常需要生成一些的变量，比如交互项、平方项、虚拟变量等等。虽然生成新的变量比较简单，但是在实际操作。中异常重要。因此一定要自己动手做，锻炼实操能力。做到熟能生巧，运用自如。有需要源代码者欢迎打扰：18226605361；

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  1. CONNECT:[ UseTime:0.000908s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001589s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.001245s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.001242s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001361s ]
  6. SELECT * FROM `set` [ RunTime:0.001452s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001532s ]
  8. SELECT * FROM `article` WHERE `id` = 476765 LIMIT 1 [ RunTime:0.000972s ]
  9. UPDATE `article` SET `lasttime` = 1772318685 WHERE `id` = 476765 [ RunTime:0.002950s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000683s ]
  11. SELECT * FROM `article` WHERE `id` < 476765 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001238s ]
  12. SELECT * FROM `article` WHERE `id` > 476765 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001121s ]
  13. SELECT * FROM `article` WHERE `id` < 476765 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.002268s ]
  14. SELECT * FROM `article` WHERE `id` < 476765 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.003542s ]
  15. SELECT * FROM `article` WHERE `id` < 476765 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.003736s ]
0.114112s