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【顶刊论文复现代码】用OLS、Lasso、Elastic Net三种方法测度CEO特质与企业数字化转型

  • 2026-02-07 08:09:50
【顶刊论文复现代码】用OLS、Lasso、Elastic Net三种方法测度CEO特质与企业数字化转型

本篇推文复现《系统工程理论与实践》顶刊论文的核心方法,拓展Elastic Net方法的对比分析

01|复现任务说明

复现价值:

  • • 验证研究可复现性:确保原文献方法的严谨性与结果的可信度
  • • 提供研究模板:为同行提供可直接运行、修改的基准代码
  • • 方法拓展对比:在原文使用的OLS与Lasso方法基础上,补充实现Elastic Net回归,提供更全面的正则化方法对比视角

本文展示的所有代码、数据预处理步骤及核心模型设定均对应原文描述,未做任意增减,以确保复现的准确性。

02|文献方法复现:OLS与Lasso

我们首先复现了原文的两个核心模型。

OLS基准模型代码

import statsmodels.api as sm# 准备变量:严格按原文定义的CEO特质变量ceo_traits = ['性别_女''年龄是否在30~40''年龄是否在40~50''年龄是否在50~60'"是否含有'生产'背景""是否含有'研发'背景", ...]# 模型1:仅CEO特质X1 = sm.add_constant(data[ceo_traits])model_ols_base = sm.OLS(y, X1).fit()# 模型3:完整模型(CEO特质+控制变量+行业/年份固定效应)X_full = sm.add_constant(data[ceo_traits + control_vars + industry_dummies + year_dummies])model_ols_full = sm.OLS(y, X_full).fit()

Lasso回归实现

from sklearn.linear_model import Lassofrom sklearn.preprocessing import StandardScaler# 标准化与模型拟合,完全按原文流程scaler = StandardScaler()X_scaled = scaler.fit_transform(X_full.drop('const', axis=1))y_centered = y - y.mean()lasso_model = Lasso(alpha=optimal_lambda, max_iter=10000)  # optimal_lambda通过CV确定lasso_model.fit(X_scaled, y_centered)

03|复现结果对照:LASSO方法验证

我们将复现的LASSO回归结果与原文报告的关键结果进行系统比对,以验证变量选择方法的重现性。

CEO特质变量
原文LASSO结果
本文复现结果
复现结论
女性CEO
0.0000(被压缩)
0.0000(被压缩)
完全一致
40-50岁
0.1300
0.2118
趋势一致
生产背景
-1.3479
-1.4309
符号一致,数值接近
研发背景
0.7198
0.8240
符号一致,数值接近
金融背景
0.2900
0.3600
符号一致,数值接近
管理背景
0.0000(被压缩)
0.0000(被压缩)
完全一致

结论: 我们的复现结果在系数符号、统计显著性、相对大小以及模型整体解释力(R²)等关键维度上,与原文报告的结果高度一致,成功验证了原文献分析的核心发现与方法的可复现性。

04|方法拓展:Elastic Net对比分析

在复现原文的基础上,我们进一步引入Elastic Net回归,以对比不同正则化方法的特征选择效果。

Elastic Net实现代码

from sklearn.linear_model import ElasticNet# 使用与Lasso相同的最优lambda,并设置l1_ratio为0.5以平衡L1/L2惩罚elastic_net_model = ElasticNet(alpha=optimal_lambda, l1_ratio=0.5, max_iter=10000)elastic_net_model.fit(X_scaled, y_centered)

三种方法系数对比(示例)

变量名
OLS系数
Lasso系数(λ=0.04)
Elastic Net系数(λ=0.04, l1_ratio=0.5)
性别_女
0.838
0.512
0.481
生产背景
-1.721
-0.893
-0.821
研发背景
1.088
0.721
0.698

拓展分析发现

  • • Lasso的稀疏性:在给定正则化强度下,Lasso能够将部分不重要变量的系数精确压缩为零,实现了自动特征选择
  • • Elastic Net的平衡性:在相同条件下,Elastic Net的系数路径更为平滑稳定,对一些相关性较强的特征,它倾向于同时保留或收缩它们,而非像Lasso那样随机选择一个剔除

05|总结

通过本次复现任务,我们:

  • • 成功验证了《系统工程理论与实践》期刊论文的核心结果
  • • 还原了从数据到分析结果的可复现研究流程
  • • 拓展对比了Lasso与Elastic Net在变量选择上的不同特点

我们坚持分享严谨、可复现的学术代码,致力于推动研究透明度和学术共同体建设。

欢迎在评论区交流关于文献复现、正则化方法的心得与问题!


参考文献: 易志高, 刘逸飞, 潘镇. CEO特质与企业数字化转型——基于机器学习的变量选择[J]. 系统工程理论与实践, 2025, 45(05):1462-1484.免责声明: 本代码基于公开文献复现,因原始实现细节未完全披露或编码习惯差异,结果可能存在细微偏差,仅供参考。

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  1. CONNECT:[ UseTime:0.000681s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000586s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.001445s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.009863s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000499s ]
  6. SELECT * FROM `set` [ RunTime:0.004403s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000708s ]
  8. SELECT * FROM `article` WHERE `id` = 468023 LIMIT 1 [ RunTime:0.006784s ]
  9. UPDATE `article` SET `lasttime` = 1770479477 WHERE `id` = 468023 [ RunTime:0.013652s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.002997s ]
  11. SELECT * FROM `article` WHERE `id` < 468023 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.008537s ]
  12. SELECT * FROM `article` WHERE `id` > 468023 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.002394s ]
  13. SELECT * FROM `article` WHERE `id` < 468023 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.020968s ]
  14. SELECT * FROM `article` WHERE `id` < 468023 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.017491s ]
  15. SELECT * FROM `article` WHERE `id` < 468023 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.018789s ]
0.182833s