请问你们对于AC21 same or similar occupational classification 有没有研究? 到底similar的定义是什么? 我看到 O'net上career cluster, 定义为"Career Clusters contain occupations in the same field of work that require similar skills." 不知道是不是指只要在同一个cluster 里的都是 same or similar 的 occupation 呢? 比如这个连接里的都算?(Science, Technology, Engineering and Mathematics)
http://online.onetcenter.org/find/career?c=15&g=Go