NDLI: Model Checking Data-Aware Workflow Properties with CTL-FO+

Content Provider	IEEE Xplore Digital Library
Author	Halle, S. Villemaire, R. Cherkaoui, O. Ghandour, B.
Copyright Year	2007
Description	Author affiliation: Univ. du Quebec a Montreal, Montreal (Halle, S.; Villemaire, R.; Cherkaoui, O.; Ghandour, B.)
Abstract	Most works that extend workflow validation beyond syntactical checking consider constraints on the sequence of messages exchanged between services. However, these constraints are expressed only in terms of message names and abstract away their actual data content. Using the context of the User-controlled Lightpath initiative (UCLP) hosted by the CANARIE consortium, we provide examples of real- world "data-aware" web service constraints where the sequence of messages and their content are interdependent. We present $CTL-FO^{+},$ an extension over Computation Tree Logic that includes first-order quantification on state variables in addition to temporal operators. We show how CTL- $FO^{+}$ is adequate for expressing data-aware constraints, give a complete model checking algorithm for $CTL-FO^{+}$ and establish its complexity to be PSPACE-complete. This makes using $CTL-FO^{+}$ for validating workflow properties no harder than using the Linear Temporal Logic (LTL) already used by some web service tools. Finally, we show how the modelling of data-aware properties is an increase in expressiveness that cannot be efficiently simulated by these tools.
Starting Page	267
Ending Page	267
File Size	605743
Page Count	1
File Format	PDF
ISBN	9780769528915
ISSN	15417719
DOI	10.1109/EDOC.2007.36
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-10-15
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Web services Logic Context-aware services Formal languages Distributed computing Web and internet services Standards organizations Councils Simple object access protocol Guidelines
Content Type	Text
Resource Type	Article

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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
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