From Causes for Database Queries to Repairs and Model-Based Diagnosis and Back

被引:20
作者
Bertossi, Leopoldo [1 ]
Salimi, Babak [2 ]
机构
[1] Carleton Univ, Sch Comp Sci, Ottawa, ON, Canada
[2] Univ Washington, Comp Sci & Engn, Seattle, WA 98195 USA
基金
加拿大自然科学与工程研究理事会;
关键词
Causality; Diagnosis; Repairs; Consistent query answering; Integrity constraints;
D O I
10.1007/s00224-016-9718-9
中图分类号
TP301 [理论、方法];
学科分类号
081202 ;
摘要
In this work we establish and investigate connections between causes for query answers in databases, database repairs with respect to denial constraints, and consistency-based diagnosis. The first two are relatively new research areas in databases, and the third one is an established subject in knowledge representation. We show how to obtain database repairs from causes, and the other way around. Causality problems are formulated as diagnosis problems, and the diagnoses provide causes and their responsibilities. The vast body of research on database repairs can be applied to the newer problems of computing actual causes for query answers and their responsibilities. These connections are interesting per se. They also allow us, after a transition inspired by consistency-based diagnosis to computational problems on hitting-sets and vertex covers in hypergraphs, to obtain several new algorithmic and complexity results for database causality.
引用
收藏
页码:191 / 232
页数:42
相关论文
共 60 条
[1]  
Afrati Foto N., 2009, ACM International Conference Proceeding Series, P31
[2]  
[Anonymous], 2011, Database Repairing and Consistent Query Answering
[3]  
[Anonymous], NUMERICAL METHODS SO, DOI DOI 10.1007/978-1-4612-1984-2_19
[4]  
[Anonymous], 1979, Computers and Intractablity: A Guide to the Theory of NP-Completeness
[5]   Answer sets for consistent query answering in inconsistent databases [J].
Arenas, M ;
Bertossi, L ;
Chomicki, J .
THEORY AND PRACTICE OF LOGIC PROGRAMMING, 2003, 3 :393-424
[6]   Scalar aggregation in inconsistent databases [J].
Arenas, M ;
Bertossi, L ;
Chomicki, J ;
He, X ;
Raghavan, V ;
Spinrad, J .
THEORETICAL COMPUTER SCIENCE, 2003, 296 (03) :405-434
[7]  
Arenas M., 1999, Proceedings of the Eighteenth ACM SIGMOD-SIGACT-SIGART Symposium on Principles of Database Systems, P68, DOI 10.1145/303976.303983
[8]   Coherent integration of databases by abductive logic programming [J].
Arieli, O ;
Denecker, M ;
Van Nuffelen, B ;
Bruynooghe, M .
JOURNAL OF ARTIFICIAL INTELLIGENCE RESEARCH, 2004, 21 :245-286
[9]  
Barcelo P., 2003, LNCS, V2582, P1
[10]  
Bertossi L., 1 INT WORKSH BIG UNC