JeromeDL - the Semantic Digital Library

Slide 1: Digital Enterprise Research Institute www.deri.ie JeromeDL the Semantic Digital Library Sebastian R. Kruk, Stefan Decker  Copyright 2007 Digital Enterprise Research Institute. All rights reserved. www.deri.org

Slide 2: Outline Digital Enterprise Research Institute www.deri.ie Motivation  From paper books to social media  Semantic services in JeromeDL  Social services in JeromeDL  Metadata in use in JeromeDL  Semantic DL in eLearning and Museums  Conclusions  2

Slide 3: Social Semantic Information Spaces Digital Enterprise Research Institute www.deri.ie

Slide 4: Motivation (1) Digital Enterprise Research Institute www.deri.ie How to integrate and search information from  different sources? 4

Slide 5: Motivation (2) Digital Enterprise Research Institute www.deri.ie How to share and interconnect knowledge in a digital  library? 5

Slide 6: The old days of paper books Digital Enterprise Research Institute www.deri.ie Library:  Archive (storage space)  Bibliographic cards (metadata)  Librarian (interface)  Pros:  Someone to talk to, to explain, to help in searching  Library as a meeting place  Cons:  Based on physical location  Libraries are not connected – we have to visit every place  6

Slide 7: Yesterday’s world of digital content Digital Enterprise Research Institute www.deri.ie Digital library  Database and archive (storage)  Digital bibliographic descriptions (metadata)  Full-text search (interface)  Pros:  Content accessible online  Federations of libraries – visit less places  Cons:  Lonely user  No one to talk to, we need to find the right keywords, what if we do not  know them (“man without an ear” paintings example) Still many problems with interconnecting (different) libraries  7

Slide 8: Tomorrow of interconnected, social media Digital Enterprise Research Institute www.deri.ie Semantic Digital Libraries  Semantic bibliographic description (interconnected metadata)  Annotations provided by users (social metadata)  Collaborative search and browsing (interface)  Features  Search and browsing based on semantics empowers users  Users contribute to the classification process  Users can understand community driven annotations  Users enhance digital content using blogs, wikis on the side  RDF provides bases for interconnection of digital libraries  8

Slide 9: JeromeDL - Introduction Digital Enterprise Research Institute www.deri.ie Joint effort of DERI, National University of Ireland, Galway  and Gdansk University of Technology (GUT) Distributed under BSD Open Source license  Digital library build on semantic web technologies to  answer requirements from: librarians, scientists and communities.

Slide 10: JeromeDL - Properties Digital Enterprise Research Institute www.deri.ie Support for different kinds of bibliographic medatata, like: DublinCore,  BibTeX and MARC21 at the same time. Making use of existing rich sources of bibliographic descriptions (like  MARC21) created by human. Supporting users and communities:  users have control over their profile information;  community-aware profiles are integrated with bibliographic descriptions  support for community generated knowledge  Delivering communication between instances:  P2P mode for searching and user authentication  Hierarchical mode for browsing 

Slide 11: Metadata and Services in JeromeDL Digital Enterprise Research Institute www.deri.ie 11

Slide 12: Semantic Metadata and Services Digital Enterprise Research Institute www.deri.ie 12

Slide 13: Semantic Metadata and Services Digital Enterprise Research Institute www.deri.ie MarcOnt  Bibliographic Ontology  MarcOnt Portal and feedback agent  Mediation services: ontologizing metadata and interconnecting  with other libraries Search and Browsing  RDF Query and Natural Language Templates  MultiBeeBrowse  Communication with heterogeneous networks of digital  libraries 13

Slide 14: MarcOnt Initiative – Overview Digital Enterprise Research Institute www.deri.ie Motivation: Provide set of tools for  collaborative ontology development MarcOnt Initiative goals: Create a framework for collaborative ontology improvement  Provide domain experts with tools to share their knowledge  Offer tools for data mediation between different data formats 

Slide 15: MarcOnt Portal and MarcOnt Ontology Digital Enterprise Research Institute www.deri.ie Initial Ontology MarcOnt Ontology: Central point of MarcOnt Initiative  Sugested Poposals Translation and mediation format  Versioning Proposal discussion Continuos collaborative ontology  Proposal anotations improvement Knowledge from the domain experts  Proposal autopromoting Proposal voting MarcOnt Portal (source of Next Revision MarcOnt Portal knowledge): Suggestions  Annotations  Versioning  Ontology editor 

Slide 16: Mediation Services Digital Enterprise Research Institute www.deri.ie 16

Slide 17: Networks of Digital Libraries Digital Enterprise Research Institute www.deri.ie ELP (Extensible Library Protocol) implementation  communication within JeromeDL network  adapters for communication with other networks  D-FOAF integration (distributed user profile management)  single sign on and single registration within D-FOAF network  HyperCuP integration  0 (scalable P2P network) 2 2 1 1 0 Independent ELP network entry point  0 1 1 2 2 0 0

Slide 18: Browsing the data graph Digital Enterprise Research Institute www.deri.ie JeromeDL exploits interconnected data  18

Slide 19: Browsing the data graph Digital Enterprise Research Institute www.deri.ie … to allow browsing  19

Slide 20: Semantic Metadata and Services Digital Enterprise Research Institute www.deri.ie 20

Slide 21: Social Semantic Collaborative Filtering Digital Enterprise Research Institute www.deri.ie Goal: to enhance individual bookmarks with  shared knowledge within a community Users annotate catalogues of bookmarks with semantic  information taken from DMoz or WordNet vocabularies Catalogs can include (transclusion) friend's catalogues  Access to catalogues can be restricted with social  networking-based polices 21

Slide 22: Social Semantic Collaborative Filtering Digital Enterprise Research Institute www.deri.ie Community-oriented, semantically-rich taxonomies  Information about a user's interest  Flows of expertise from the domain expert  Recommendations based on users previous actions  Support for metadata of community portals  Integration with search and browsing in JeromeDL to  support collaborative search and browsing 22

Slide 23: Social Semantic Collaborative Filtering Digital Enterprise Research Institute www.deri.ie foaf:knows xfoaf:include xfoaf:bookmark 23

Slide 24: Sharing Knowledge with SSCF Digital Enterprise Research Institute www.deri.ie 24

Slide 25: Delivering Semantic Content Digital Enterprise Research Institute www.deri.ie Providing semantic annotations during uploading process:  open module for handling any taxonomies  keywords based on WordNet and free tagging  defining structure of resources in the JeromeDL ontology  Lifting legacy metadata to MarcOnt ontology  Community maintained annotations  social semantic collaborative filtering  semantic descriptions based on the FOAF metadata 

Slide 26: Annotating Library Resources Digital Enterprise Research Institute www.deri.ie 26

Slide 27: Semantic Information In Use Digital Enterprise Research Institute www.deri.ie Searching:  Keyword-based search with semantic query expansion  Semantic search:  – Direct RDF quering – Natural language templates Browsing the data graph  Sharing:  Social Semantic Collaborative Filtering  Semantically Interlinked Online Communities  Heterogeneous communication:  Bibster,  OpenSearch/A9,  OAI-PMH 

Slide 28: Evaluation of e-Learning Solution Digital Enterprise Research Institute www.deri.ie Comparison between process based on  JeromeDL and a set of other services Some tasks take shorter to execute with JeromeDL  Some tasks are automated within JeromeDL  Roughly 50% less time spend with JeromeDL  28

Slide 29: Museum Scenario Digital Enterprise Research Institute www.deri.ie Museums have physical objects  Should bind digital annotations with physical objects  Real-virtual tours  Start with real, guided tour  Ubiquitous browse through context information  Locate other exhibitions in the vicinity  Share your knowledge and experience with others, leave bread-  crumbs for others Get the most of the exhibition during your visit  29

Slide 30: Conclusions Digital Enterprise Research Institute www.deri.ie New generation of Internet services can bring digital  libraries: Closer to each other (interoperability)  Closer to the users (online communities)  Social and semantic services delivered in digital libraries  can enhance user experience in: E-Learning  Real world (!) museums  ... and other online and real services  JeromeDL is the first digital library that aims to implement  these services Growing number of JeromeDL instances world-wide:  http://wiki.jeromedl.org/Instances 30

Slide 31: Digital Enterprise Research Institute www.deri.ie JeromeDL answers various expectations as the Digital Library on Social Semantic Information Spaces http://www.jeromedl.org/ http://wiki.jeromedl.org/ Sebastian Ryszard Kruk, Stefan Decker DERI, NUI Galway, Ireland sebastian.kruk@deri.org 31