CFP: W3C Workshop on Rule Languages for Interoperability

From: Sandro Hawke (
Date: 02/15/05

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    		      - Call For Participation -
    			   W3C Workshop on
    			   27-28 April 2005
    			   Washington, D.C.
    		  Position Papers Due: 18 March 2005
       Rule languages and rule systems are widely used in applications
       ranging from database integration, service provisioning, and
       business process management to loan underwriting, privacy policies
       and Web services composition. General purpose rule languages remain
       relatively unstandardized, however, and rule systems from different
       suppliers are rarely interoperable.
       Meanwhile, the Web has achieved remarkable success in allowing
       documents to be shared and linked throughout the world. More
       recently, Semantic Web languages like RDF and OWL are beginning to
       support data/knowledge sharing on the same scale and with
       considerable flexibility. Having a language for sharing rules is
       often seen as the next step in promoting data exchange on the Web.
       This workshop, held by W3C with support from DARPA and hosted by
       ILOG, is intended to gather various participants and inputs needed
       to see how a standard rule framework might be developed, informed
       by Web Architecture and useful for addressing real user challenges.
       * Rules everywhere
       Rules are everywhere. They are found in many domains, disciplines, and
       industries. Business policies, laws and regulations, guidelines and
       best practices, definitions and axioms, database schema translations,
       workflow branching and technical constraints, all require a
       declarative and modular approach to their implementation. There is a
       thriving commercial market in several families of rule technologies,
       including production rules, event-condition-action rules, Prolog,
       relational database systems, and others. However, practical
       interoperability between these systems, especially across the
       different families, is currently quite limited.
       Rules are a key element of the Semantic Web vision, allowing
       integration, derivation, and transformation of data from multiple
       sources in a distributed, transparent, and scalable manner. Rules can
       themselves be treated as data, published on the web, and when URIs (or
       QNames) are used as symbol-constants in a rule language, they can form
       useful links between knowledge bases. In a Web services environment,
       rules offer the opportunity to enable the automation of the
       enforcement and composition of policies governing the delivery of
       information, the access to services, or the execution of processes.
       Rules have advantages of flexibility and manageability. In addition,
       the declarative nature of rules gives them a special appeal as a
       programmatic and knowledge representation device in a distributed and
       Web-based environment, where they can be owned, specified and managed
       in one place, and applied in many other places. This requires,
       however, a standard way to represent rules unambiguously for
       publication and interchange purposes.
       * Different rules and a common foundation
       Rules come in a variety of forms for different uses and applications.
       Business rules, decision tables, and decision trees are used to
       automate the enforcement of business policies and regulations. Logical
       formulas, constraints, ontologies, association and transformation
       rules are used for inferencing in information retrieval and
       information integration, including databases, and metadata
       repositories (e.g. Dublin Core Initiative), or in analytical,
       forecasting and/or optimization applications.
       Rules, however, trace their roots back to formal logic. There,
       semantics can be represented via a logical model theory and inference
       can be based on logical proof theory. The most important de facto
       semantic standard is first order predicate calculus, unchanged for
       nearly a hundred years. In the last three decades, declarative logic
       programs have emerged as a complement to first order logic, and
       provided the foundation for the semantics of relational databases and
       many rule languages. Algorithmic techniques and theory for formal
       logic have been extended to enable, and semantically treat: procedural
       attachments for built-ins, tests, and actions; and non-monotonicity
       for negation-as-failure, defaults, inheritance, prioritization,
       updating, revision, and conflict handling.
       * Candidate Languages and related work
       To be effective, practical, and deployable, a Web standard on rules
       needs to focus on the requirements of end users and the needs of rule
       technology providers. The goal of being able to transfer rulebases /
       knowledge bases, or simply to process them with different software,
       has helped motivate several important standardization or
       standards-proposing efforts including RuleML and SWRL, n3, Metalog,
       KIF and ISO Common Logic, ISO Prolog, and others. Some of those have
       been aimed at more or less specialized purposes, e.g., in the domains
       of Web Service policies (WS-Policy, WSPL, Policy RuleML, SWSL, WSML),
       access control and authorization (XACML, EPAL, P3P/APPEL), Business
       Rules (BRML, SRML), and other areas as well. Related standardization
       efforts have also started with respect to rule modeling (OMG's
       Business Semantics for Business Rules RFP and Production Rules
       Representation RFP) and rulebase execution (JSR 94 - Java API for
       Rules Engine).
      Workshop Goals
       This workshop is a step along the path to establishing a standard
       language framework to support rule system interoperation on the Web.
       It aims at gathering vendors, technologists, application developers
       and users to discuss and provide recommendations to the W3C regarding
       what is the best approach to the specification of a standard or family
       of standards for the public representation and exchange of rules on
       the Web, in terms of avoiding redundant efforts, of optimizing the
       potential for wide adoption, and of promoting consistency and
       interoperability between different applications or layers, while
       preserving their specific requirements.
       The specific goals for this workshop are:
        1. Gather and refine use cases and requirements for a framework;
        2. Gather information about available technologies and relevant areas
           of practice and research;
        3. Help establish a common ground for this work as well as a
           community of possible participants;
        4. Understand priorities and time frames and gather information to
           establish a strategy and a calendar;
        5. Help organizations and individuals learn enough about this work to
           determine their level of commitment going forward.
       The workshop is expected to result in the following deliverables:
         * Use Cases (ideally with Test Cases) and Potential Requirements
         * Candidate Technologies
         * Workshop position papers
         * Workshop presentations
         * Workshop minutes
         * Recommendations regarding future work
       These will be published on the workshop home page.
      Scope of the Workshop
       The scope of this workshop is restricted in order to make the best use
       of participants' time. In general, discussion at the workshop and in
       the position papers should stay focused on the workshop goals and
       In scope:
         * Collecting use cases and articulating requirements
         * Analyses of the rules market and user base
         * Comparisons across languages and systems, including both widely
           deployed and research systems
         * Discussing the scope of a W3C Working Group in this area
         * Test cases which clarify use cases and demonstrate key differences
           between candidate technologies
       Out of scope:
         * Detailed technical discussion or presentation of new results,
           beyond what is necessary to resolve issues concerning the main
           group of participants. This is not an academic workshop or
         * Significantly revisiting existing W3C Recommendations
         * Making decisions. While people can discuss the desirability or
           practicality of features and observe "straw poll" consensus, the
           lack of time or structure for deliberation rules out formal
           decision making.
         * To avoid a common time sink, we ask that people avoid trying to
           define the term "rule". An impulse to label something as "not
           being about rules" or circumscribe the territory can often be
           reframed as asking more details about a use case.
      Expected Audience
       We expect several communities to contribute to the workshop:
         * Rule users, especially those with a need for system
         * Rule systems providers (commercial or non commercial)
         * Representatives of and participants in related standards efforts
         * Technical experts
      Requirements for Participation
         * Position papers are required to participate in this workshop. Each
           organization or individual wishing to participate must submit a
           position paper no later than 18 March. Participation is pending
           acceptance of the position paper by the program committee.
           (Government employees who wish to participate but are unable to
           submit position papers should contact the workshop chairs.)
         * To ensure maximum interaction among participants, the number of
           participants will be limited. To ensure maximum diversity, the
           number of participants per organization will be limited in the
           event the overall participation limit is reached
         * There will be no participation fee.
         * W3C membership is not required
         * Workshop sessions and documents will be in English
         * Instructions for how to register will be sent to submitters of
           accepted position papers.
      Position Papers
       Position papers are the basis for the discussion at the workshop.
       These papers will also be made available to the public from the
       workshop site.
       * Topics
       Position papers discussing applications are expected to focus on the
       requirements for the public representation and interchange of rules.
       Position papers discussing interchange formats are expected to focus
       on the requirements and types of application covered by the proposal.
       Position papers discussing specifications including a rule interchange
       format are expected to focus on that aspect and on how they could link
       to/import rules represented in other existing or emerging formats (or
       why they cannot). Position papers discussing general issues regarding
       rules interchange and rule systems interoperability are expected to
       focus on how relevant existing standards or proposal or parts of an
       approach can be reused, evolved, extended; on principles and
       architecture; on related efforts in other communities (OMG, JCP, ISO,
       RuleML, SWSI, WSMO, etc).
       * Format
       All papers should be 1 to 5 pages, although they may link to longer
       versions or appendixes. Papers should explain the participant's
       interest in the workshop, explain their position with respect to a
       standard for publishing and interchanging rules on the Web and include
       concrete examples of the kind of rules they are interested in.
       Accepted position papers will be published on the public Web pages of
       the workshop. Submitting a position paper comprises a default
       recognition of these terms for publication. Allowed formats are
       (valid) HTML/XHTML, PDF, or plain text. Papers in any other formats
       (including invalid HTML/XHTML) will be returned with a request for
       correct formatting. Good examples of position papers can be seen in
       the QL'98 workshop.
       The Program Committee may ask the authors of particularly salient
       position papers to explicitly present their position at the workshop
       to foster discussion. Presenters will be asked to make the slides of
       the presentation available on the workshop home page in HTML, PDF, or
       plain text.
       Position papers must be submitted via email to no later than 18 March 2005.
       Early submissions are appreciated.
    Workshop Organization
      Workshop Chairs
         * Sandro Hawke (W3C)
         * Christian de Sainte Marie (ILOG)
         * Said Tabet (The RuleML Initiative)
      Program Committee
       At this time, the program committee is still being assembled. The list
       so far:
         * Harold Boley (NRC Canada, RuleML)
         * Dan Connolly (W3C)
         * Mike Dean (BBN, DAML)
         * Stefan Decker (DERI)
         * Marc Goodner (SAP)
         * Benjamin Grosof (MIT Sloan, RuleML)
         * Pat Hayes (IHMC, Common Logic)
         * Jim Hendler (University of Maryland)
         * Ian Horrocks (University of Manchester)
         * Sridhar Iyengar (IBM)
         * Massimo Marchiori (University of Venice)
         * Deborah McGuinness (Stanford KSL)
         * Bob McWhirter (OpenXource, Drools)
         * Eric Miller (W3C)
         * Jon Pellant (Pegasystems)
         * Jos de Roo (Agfa)
         * Chris Swan (Credit Suisse First Boston)
         * Paul Vincent (Fair Isaac)
       The workshop program will run from 8:30 am to 6 pm on both days.
       ILOG, S.A. will host the workshop, although not in their own
       Significant funding for organizing this workshop was provided by DARPA
       through the DAML program.
       The workshop will be held in a conference facility (such as a hotel)
       to be determined, in the Washington, D.C. area. Details will be
       included with acceptance notification.
      Important Dates
             Date                           Event
       15 February 2005 Call For Participation issued
       18 March 2005    Deadline for position papers.
       1  April 2005    Acceptance notification sent; Program released
       15 April 2005    Deadline for registration
       27 April 2005    Workshop Begins (8:30 AM)
       28 April 2005    Workshop Ends (6 PM)
    Sandro Hawke, Said Tabet, Christian de Sainte Marie, with help from
    Benjamin Grosof
    Id: cfp.html,v 1.103 2005/02/14 18:53:31 sandro Exp

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