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eGovernment Services Composition Using Multi-Faceted Metadata Classification Structures


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As presented in eGov 2007 Conference

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eGovernment Services Composition Using Multi-Faceted Metadata Classification Structures

  1. 1. National Technical University of Athens eGovernment Research Unit e-Government Services Composition Using Multi-Faceted Metadata Classification Structures Fenareti Lampathaki, Yannis Charalabidis, Demetrios Sarantis, Sotirios Koussouris and Dimitris Askounis Dr. Yannis Charalabidis eGOV 2007 Conference Regensburg, Germany
  2. 2. Outline <ul><li>Introduction </li></ul><ul><li>Building eGovernment Portals – Methodology </li></ul><ul><li>Designing eGovernment Portals </li></ul><ul><ul><li>Selecting Services to be offered </li></ul></ul><ul><ul><li>Services and Data Modelling </li></ul></ul><ul><ul><li>Architecture Definition </li></ul></ul><ul><li>Conclusions </li></ul>
  3. 3. Introduction Availability and benefits of e-Government systems in EU
  4. 4. The need for a Taxonomy in EGovernment <ul><li>E-Government services effectively bring descriptions of lots of documents, services, people, systems, organizations and other resources together and use that information to broker access to a subset of the network services available to that user in the government sphere. </li></ul><ul><li>A structured and transparent preparation of relevant information, about the processes’ steps and their interdependencies each government service includes, is missing. </li></ul><ul><li>The Service Data Worksheet comes to build upon the results of the other initiatives (Dublin Core, UK e-Government Metadata Standard, etc) and aims to focus, specialize and collect all the relevant to public services metadata leading to automated service process and contributing in solving the problem of the Homogeneous Service Composition. </li></ul><ul><li>100 Core Services, as extracted from the Greek eGIF complete inventory of services, have been populated in the taxonomy of the SDW and guide the design of patterns that homogenize and generalize the complete list of services. </li></ul><ul><li>The resulting overall populated taxonomy is maintained in the Services Descriptions Database, providing the mechanisms for creating, updating and modifying service descriptions-nodes as well as for querying the whole multi-facet tree. </li></ul>
  5. 5. Methodology Designing and Creating the Taxonomy
  6. 6. Methodolocial Approach <ul><li>The Methodology compromises of the following steps: </li></ul><ul><li>Complete Service Set Identification </li></ul><ul><li>Core Services Definition </li></ul><ul><li>Data and Metadata Modelling (Using the SDW) </li></ul><ul><li>Process Modelling (use of BPMN) </li></ul><ul><li>Services Homogenizations & Generalization (Service Pattern Extraction </li></ul>
  7. 7. Selection of Core Services <ul><li>First step is plotting the “Complete Map of Governmental Services”. About 2,2000 governmental services were identified </li></ul><ul><li>The Core Services have been systematically chosen in order to constitute a representative sample of the services oriented towards citizens and businesses and embrace the majority of the Greek Public Authorities. </li></ul><ul><li>Factors for Core Services Selection (amongst others): </li></ul><ul><li>the services’ frequency </li></ul><ul><li>the services’ importance according to the European Commission's strategic policy i2010 </li></ul><ul><li>The service “independence” (whether these services are a prerequisite for other services) </li></ul>
  8. 8. Services Data & Metadata <ul><li>Retrieval and evaluation of information for the Core Services under review. </li></ul><ul><li>The Service Description Worksheets (SDW) is used for retrieving details, such as the service execution steps, the exchanged documents among the involved parties and the business and legal rules guiding the service execution, and results in the design of service models. </li></ul><ul><li>Results are stored in a relational database (the Services Descriptions Database) that facilitates data processing and is appraised by a group of domain experts on the specific service. </li></ul><ul><li>A spherical view of the services to be deployed for citizens or businesses on a central and municipal level can be obtained. This includes aspects like: sophistication level, security requirements, means of service provision, authentication and personalization issues. </li></ul>
  9. 9. Services Modeling <ul><li>Service Description Worksheet, all relevant details regarding the service execution pattern is extracted from the Service Description Worksheet and depicted in process using BPMN </li></ul><ul><li>The Service Modelling Phase is designed to further distinguish between different description views that show particular points of view for understanding the service. </li></ul><ul><li>Private Processes – Inner Organisation Modelling, rich information on business rules. </li></ul><ul><li>Public Processes – External Process View, indication about the exchanged document and message. </li></ul><ul><li>Collaboration Processes - Consolidation of public processes for two entities/roles, recognition of the interoperability points among different public organizations. </li></ul>
  10. 10. Services Homogenization & Generalization <ul><li>Huge amount off services and descriptive data has to be processed </li></ul><ul><li>Relational Database System used for extraction of generalized Service Patterns </li></ul><ul><li>A consolidation of the results acquired in the previous steps guides at the extension of the Core Services to the whole Public State </li></ul><ul><li>The Core Services are the guidance to generic Service Patterns creation </li></ul><ul><li>In Greece, the homogenization and categorization of the Core Services has led to Services Patterns which guide the implementation and evolution of the Complete List of Governmental Services to be included in the Greek eGIF </li></ul>
  11. 11. Building the Taxonomy Recording all Service related aspects and Populating the Taxonomy
  12. 12. The Idea Behind the SDW <ul><li>The Service Description Worksheet (SDW) contains all the service-related information, aiming at the description of the service “as-is” without penetrating into “to-be” scenarios. </li></ul><ul><li>6 identified groups of facets for a service which are divided into sub-facets and have the purpose of describing specific characteristics of a service provided either electronically or conventionally in a methodological and coherent way that will facilitate the organization of the services into taxonomy. </li></ul><ul><li>The objective of this taxonomy is twofold: </li></ul><ul><li>to provide the means – based on its structure – for the systematic analysis of the contained services in order to deduct conclusions regarding, for example, the impact of the provided services </li></ul><ul><li>To provide the required sophistication level, and to facilitate the service modeling with the help of an enterprise modeling tool. </li></ul>
  13. 13. The SDW facets <ul><li>General Information Service Code, Service Title, e Providing Organisation, Involved Organisations, Final Service, Service Recipient, Service Nature, Legal Framework, Self-appointed call of Service, Information System support. </li></ul><ul><li>Conventional way of Service Provision Requirement for Personal Presence at the submission of the application, Requirement for Personal Presence at the delivery of the service, Authentication Method. </li></ul><ul><li>Electronic Service Availability Website URL, Means of service provision, Target Level of Sophistication, Service Personalization, Service Usability, Multilingual Content, Online/Offline Service Operation, Potential for XML file dispatch, Service Progress Review, Authentication Method, Security Need </li></ul><ul><li>Service Implementation Required Documents List, the Delivered Documents List, Differences from service template model , Clarifying Information </li></ul><ul><li>Service Importance Service Frequency, Service Importance according to European Policies (i2010) </li></ul><ul><li>Service Tracing Information Source, Date of the Last Update. </li></ul>
  14. 14. Process Modelling using the Multi-facet e-Services Taxonomy <ul><li>The necessary information for designing modeling diagrams is easily extracted, leading to a Collaboration Diagram </li></ul><ul><li>The Collaboration Diagram reaches the level of analysis of a Private Diagram for each party involved to the service </li></ul><ul><li>Compliance with the BPMN notation (possible extraction to BPEL) </li></ul>
  15. 15. Conclusions Results, Conclusions and Future Work
  16. 16. Results <ul><li>???? </li></ul>
  17. 17. Conclusions <ul><li>By populating the Service Description Worksheets, creating Service Models and storing them in a relational database - the Services Description Database, the composition of service hierarchies and the design of Service Patterns is facilitated. </li></ul><ul><li>The proposed multi-faceted taxonomy besides allows for: </li></ul><ul><li>Comprehension of public governmental services under a single prism. </li></ul><ul><li>Homogenization and harmonization of the Core Governmental Services leading to Service Patterns which can be customized to the needs and requirements of any Public Administration. </li></ul><ul><li>e-Government Services Modelling using the BPMN notation. </li></ul><ul><li>Facilitation of e-Government service reengineering </li></ul>
  18. 18. Future Steps <ul><li>Formalization of the documents exchanged in the context of a service </li></ul><ul><li>Formalization of the information systems that support the service processing </li></ul><ul><li>Identification of the Government Administrations that provide or are involved in a service in corresponding Description Worksheets </li></ul><ul><li>To providing the entire taxonomy and query output in XML schema for easier exchange of data in a universal format, further assisting the population and the extraction of results from the proposed taxonomy. </li></ul><ul><li>Issue guidelines on how to design, deploy and modify patterns based on the lessons learned from the set of Service Patterns for the Greek Public State </li></ul>
  19. 19. National Technical University of Athens eGovernment Research Unit e-Government Services Composition Using Multi-Faceted Metadata Classification Structures Fenareti Lampathaki, Yannis Charalabidis, Demetrios Sarantis, Sotirios Koussouris and Dimitris Askounis Dr. Yannis Charalabidis eGOV 2007 Conference Regensburg, Germany