THE MANAGEMENT OF PROBABILISTIC DATA

被引：169

作者：

BARBARA, D

GARCIAMOLINA, H

PORTER, D

机构：

[1] ORACLE CORP,REDWOOD SHORES,CA 94065

[2] STANFORD UNIV,DEPT COMP SCI,STANFORD,CA 94305

来源：

IEEE TRANSACTIONS ON KNOWLEDGE AND DATA ENGINEERING | 1992年 / 4卷 / 05期

基金：

美国国家科学基金会;

关键词：

RELATIONAL DATABASE SYSTEM; PROBABILITY; DATA MODEL; QUERY LANGUAGE; PROBABILISTIC DATA; UNCERTAINTY; MISSING PROBABILITY; RELATIONAL OPERATORS;

D O I：

10.1109/69.166990

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

It is often desirable to represent in a database entities whose properties cannot be deterministically classified. We develop a new data model that includes probabilities associated with the values of the attributes. The notion of missing probabilities is introduced for partially specified probability distributions. This new model offers a richer descriptive language allowing the database to more accurately reflect the uncertain real world. Probabilistic analogs to the basic relational operators are defined and their correctness is studied. Also, a set of new operators that have no counterpart in conventional relational systems is presented.

引用

页码：487 / 502

页数：16