%0 Journal Article %T A comparison of closed world assumptions
A Comparison of Closed World Assumptions %A Yidong Shen %A
Shen %A Yidong %J 计算机科学技术学报 %D 1992 %I %X In this paper, we introduce a notion of the family of closed world assumptions and compare several well-known closed world approaches in the family to the extent to which an incomplete database is completed. %K 演绎数据库 %K 数据查询 %K 封闭世界假设比较 %U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=F57FEF5FAEE544283F43708D560ABF1B&aid=B68AE62DB7B81D3D63BBC5C678085FC1&yid=F53A2717BDB04D52&vid=DF92D298D3FF1E6E&iid=38B194292C032A66&sid=B78CD622C1934236&eid=28F9D9CF04F424FF&journal_id=1000-9000&journal_name=计算机科学技术学报&referenced_num=0&reference_num=9