1. Collection Service

2. 19 February 2001CYCLADES Kick-off meeting Collection A set of documents A set of services on the documents A set of polices that regulate the use of the services

3. 19 February 2001CYCLADES Kick-off meeting Why a dynamic collection functionality? The Cyclades data environment will be huge and heterogeneous The dynamic collection functionality will provide a user view of the data environment as organised into community meaningful information spaces accessible throught specific set of services

4. 19 February 2001CYCLADES Kick-off meeting User View Collection descriptions documents in computer science domain documents in physics domain stored in ArXiv and PhysNet, published after 1990 ……. Collection names Computer Science Recent Physics …….

5. 19 February 2001CYCLADES Kick-off meeting User view European Computer Science attribute-based search, cross-language search, … Computer Science simple-search, … Collection namesOperations simple-search Input: keywords in the abstract Preconditions: keywords in English Output:set of Effect:returns the specified output for all the documents that contains the given keywords in their abstract

6. 19 February 2001CYCLADES Kick-off meeting Why a dynamic collection functionality? The dynamic collection mechanism will provide a support for the optimisation of the services

7. 19 February 2001CYCLADES Kick-off meeting Architecture Create.coll(criterion) Remove.coll(coll.name) Collection Server Get.collection.description (coll.name) List.collections

8. 19 February 2001CYCLADES Kick-off meeting Collection server Collection descriptive metadata Relation between collection and system descriptive metadata System descriptive metadata List of available collections For each collection: name, subject, description, signature and effect of services, access polices List of metadata repositories, indexes,… and their address For each metadata repository: Subject, percentage accessible digital documents, language, ….. Mapping between metadata repositories and indexes Search, Browse specifications ….

9. 19 February 2001CYCLADES Kick-off meeting Dynamic creation Admissible criteria Those documents and those services that are relevant for the new identified community

10. 19 February 2001CYCLADES Kick-off meeting Dynamic creation Admissible criteria - initial assumption d d / (C1, C2, …,Cn) P(d) Composition Selection of existing collections Restriction on the document metadata fields

11. 19 February 2001CYCLADES Kick-off meeting system driven criterion formulation The user interface presents the possible options and their description List of available collections and their description Composition operators Indexed metadata fields for the documents that belong to the chosen composition Services and polices are automatically derived

12. 19 February 2001CYCLADES Kick-off meeting Time 0 options List of available collections Cyclades selected archives Description of each collection Derived by the answers to the OAI protocol requests + …..? Restriction fields DC + indexed fields of parallel metadata formats Services Cyclades services on the selected documents

13. 19 February 2001CYCLADES Kick-off meeting This is the end of the story

14. 19 February 2001CYCLADES Kick-off meeting Create collection Criterion specification: –Selection of existing collections –Composition of existing collections –Restriction

15. 19 February 2001CYCLADES Kick-off meeting Abstract collection metadata Polices description –????

16. 19 February 2001CYCLADES Kick-off meeting The collection criteria Selection of one or more existing collections Technical reports Composition of existing collections Health and Information technology Restriction Tecnical reports on medicine, written in Italian, and available in downloadable digital form Theses and dissertations produced by students at Virgina Tech

17. 19 February 2001CYCLADES Kick-off meeting Other collection criteria plus others….

18. 19 February 2001CYCLADES Kick-off meeting Implementable criterion The given collection specification (criterion) must be implementable Selection must operate on existing collections (which can be mapped into …. Restriction must specify condition that can be evaluated on the collection/collection composition e.g. Theses of the Virginia Tech collection Set of services/polices must be defined on the set of collection documents e.g.Search by author last name