This approach not only extracts schema from level structured data,but also from OEM data which include circle,while some other approaches can not extract schema from OEM data which includ...

• 这种方法不但能从层次结构数据中抽取模式,而且还能从包含环路的OEM数据中进行模式抽取,克服了其它一些算法不能从带有环路的数据中进行模式抽取的缺点。