Replication Data for What Makes Party Systems Different? A Principal Component Analysis of 17 Advanced Democracies 1970-2013
<|begin_of_text|><|start_header_id|>system<|end_header_id|> You are a research archivist expert in dataset metadata. Answer the question truthfully.  <|eot_id|><|start_header_id|>user<|end_header_id|> Here is the Description of a dataset. Description:'Party systems, that is the number and the size of all the parties within a country can vary greatly across countries.  I conduct a principal component analysis on a party seat share dataset of 17 advanced democracies from 1970-2013 to reduce the dimensionality of the data. I find that the most important dimensions that differentiate party systems are: “the size of the biggest two parties” and the level of “competition between the two biggest parties.” I use the results to compare the changes in electoral and legislative party systems. I also juxtapose the results to previous party system typologies and party system size measures. I find that typologies sort countries into categories based on variation along both dimensions.  On the other hand, most of the current political science literature use measures (for instance, the Effective Num' . Please return only a json list of at most 3 Keywords corresponding to the Description:.<|eot_id|><|start_header_id|>assistant<|end_header_id|> {"Answer" : ["Principal component analysis, Party system, Typology, Effective Number of Parties"]} <|eot_id|>
 Here is the Description of a dataset. Description:'Party systems, that is the number and the size of all the parties within a country can vary greatly across countries.  I conduct a principal component analysis on a party seat share dataset of 17 advanced democracies from 1970-2013 to reduce the dimensionality of the data. I find that the most important dimensions that differentiate party systems are: “the size of the biggest two parties” and the level of “competition between the two biggest parties.” I use the results to compare the changes in electoral and legislative party systems. I also juxtapose the results to previous party system typologies and party system size measures. I find that typologies sort countries into categories based on variation along both dimensions.  On the other hand, most of the current political science literature use measures (for instance, the Effective Num' . Please return only a json list of at most 3 Keywords corresponding to the Description:.
Party systems, that is the number and the size of all the parties within a country can vary greatly across countries.  I conduct a principal component analysis on a party seat share dataset of 17 advanced democracies from 1970-2013 to reduce the dimensionality of the data. I find that the most important dimensions that differentiate party systems are: “the size of the biggest two parties” and the level of “competition between the two biggest parties.” I use the results to compare the changes in electoral and legislative party systems. I also juxtapose the results to previous party system typologies and party system size measures. I find that typologies sort countries into categories based on variation along both dimensions.  On the other hand, most of the current political science literature use measures (for instance, the Effective Num
Principal component analysis, Party system, Typology, Effective Number of Parties