Modeling electoral choices in multiparty systems with high-dimensional data: A regularized selection of parameters using the Lasso approach
Modeling electoral choices in multiparty systems with high-dimensional data: A regularized selection of parameters using the Lasso approach
复制标题
使用高维数据对多党系统中的选举进行建模:使用 Lasso 方法对参数进行正则化选择
DOI:
10.1016/j.jocm.2015.09.004
复制
发表时间:
2015
影响因子:
2.4
通讯作者:
und Tutz
中科院分区:
文献类型:
--
作者:
Mauerer;Pößnecker;Thurner;und Tutz
The increased usage of discrete choice models in the analysis of multiparty elections faces one severe challenge: the proliferation of parameters, resulting in high-dimensional and difficult-to-interpret models. For example, the application of a multinomial logit model in a party system with J parties results in maximally J− 1 parameters for chooser-specific attributes (eg, sex and age). For the specification of alternative-specific attributes (usually: positions on issues and issue distances), maximally J parameters for each political issue can be estimated. Thus, a model of party choice with five parties based on three political issues and ten voter attributes already produces 59 possible coefficients. As soon as we allow for interaction effects to detect segment-specific reactions to issues, the situation is even aggravated. In order to systematically and efficiently identify relevant predictors in voting models, we derive and use Lasso-type regularized parameter selection techniques that take into account both individual-and alternative-specific variables. Most importantly, our new algorithm can handle for the first time the alternative-wise specification of the attributes of alternatives. Applying the specifically adjusted Lasso method to the 2009 German Parliamentary Election, we demonstrate that our approach massively reduces the models' complexity and simplifies their interpretation. Lasso-penalization clearly outperforms the simple ML estimator. The results are illustrated by innovative visualization methods, the so-called effect star plots.
登录
查看更多内容
影响因子:
4.2
作者:
Berry, William D.;DeMeritt, Jacqueline H. R.;Esarey, Justin
通讯作者:
Esarey, Justin
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
Isabelle Guinaudeau;Simon Persico
通讯作者:
Simon Persico
影响因子:
6.8
作者:
Bonnie M. Meguid
通讯作者:
Bonnie M. Meguid
DOI:
10.3998/mpub.206871
发表时间:
2007-07
期刊:
--
影响因子:
--
作者:
R. Franzese;Cindy D. Kam
通讯作者:
R. Franzese;Cindy D. Kam
DOI:
--
发表时间:
1997
期刊:
影响因子:
--
作者:
S. Merrill;B. Grofman
通讯作者:
B. Grofman