RQ4

Each CSV file contains information about the number of classes in a framework according to the number of extension points defined in them.This file can be used as input to the plots.R scriptThe pdf files show the resulting graphics corresponding to the data of the csv files.每个CSV文件均存储某框架内的类别数量统计信息，该统计结果基于框架中定义的扩展点（extension points）数目生成。该文件可作为plots.R脚本的输入数据源。PDF文件则会展示与各CSV文件数据对应的最终生成图表。