NDLI: XPath Query Relaxation through Rewriting Rules

Content Provider	IEEE Xplore Digital Library
Author	Fazzinga, B. Flesca, S. Furfaro, F.
Copyright Year	1989
Abstract	Query relaxation is the process of weakening a query to a more general one, and it is frequently employed to support approximate query answering. In this paper, rewriting systems for a wide fragment of XPath are investigated, which accomplish query relaxation through the application of simple rewriting rules transforming navigational axes and node tests into relaxed ones. Specifically, a general yet simple form of rewriting rules is considered, which subsumes the forms adopted in several rewriting systems for approximate XPath query answering. The expressiveness of rewriting systems based on this form of rules is characterized in terms of their capability of transforming a query into every more general formulation. It is shown that traditional rewriting systems are not only incomplete w.r.t. containment, but also w.r.t. the stricter form known as containment by homomorphism. This limitation is overcome by defining a set R* of rewriting rules which are still of the same simple form of traditional ones, but are expressive enough to catch at least containment by homomorphism. Then, an algorithm is proposed which exploits R* to provide approximate answers of queries along with a measure of their approximation degree.
Sponsorship	IEEE IEEE Comput. Soc. Tech. Committee on Data Eng IEEE Computer Society
Starting Page	1583
Ending Page	1600
Page Count	18
File Size	2093665
File Format	PDF
ISSN	10414347
Volume Number	23
Issue Number	10
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	XML Approximation methods Databases Cities and towns Semantics Context Painting information systems. XPath query relaxation approximate query answering
Content Type	Text
Resource Type	Article
Subject	Information Systems Computational Theory and Mathematics Computer Science Applications

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Data Mining for XML Query-Answering Support

Top- (k) Approximate Answers to XPath Queries with Negation

Result Merging Technique for Answering XPath Query over XSLT Transformed Data

XSPath: Navigation on XML Schemas Made Easy

Processing and Evaluating Partial Tree Pattern Queries on XML Data

Static analysis of xml security views and query rewriting

Query relaxation by structure and semantics for retrieval of logical Web documents

XML Security Views Revisited

Relaxed Functional Dependencies—A Survey of Approaches

XPath Query Relaxation through Rewriting Rules

Similar Documents

Data Mining for XML Query-Answering Support

Top- (k) Approximate Answers to XPath Queries with Negation

Result Merging Technique for Answering XPath Query over XSLT Transformed Data

XSPath: Navigation on XML Schemas Made Easy

Processing and Evaluating Partial Tree Pattern Queries on XML Data

Static analysis of xml security views and query rewriting

Query relaxation by structure and semantics for retrieval of logical Web documents

XML Security Views Revisited

Relaxed Functional Dependencies—A Survey of Approaches

XPath Query Relaxation through Rewriting Rules