The Closed World of Databases Meets the Open World of the Semantic Web
From ESIWiki
Workshops related to exploiting diverse sources of scientific data
Contents |
Overview
Exploiting scientific data inevitably involves scientists sharing their data. However to share their data which is frequently stored in databases, requires understanding the semantics of the data to be shared. An earlier workshop, RDF, Ontologies and Meta-Data Workshop, investigated experiences in using semantic web technologies to aid in the sharing and integration of scientific (and other) information, through the use of meta-data, OWL, RDF and globally unique identifiers such as Life Science Identifiers (LSIDs) and identified some problems worthy of further exploration. It was noted that the database community traditionally operates under the closed world assumption (CWA), while the semantic web community an open world assumption (OWA) therefore this workshop will explore some of the issues around this area with Chris Date presenting the database perspective and speakers from the semantic web and the scientific user community giving their views on these issues The workshop will begin by reviewing the CWA and the OWA from both communities and discuss the implications for data processing when the two worlds meet such as when database queries return data to be reasoned across. The problem of nullology, i.e. the study of the empty set will be presented and how this should be interpreted will be discussed. The important issue of missing information is something that can be interpreted differently between the CW and OW therefore how to deal with it and in fact the question of what is missing information will be explored. Finally the identification of objects or concepts is a common issue in both databases and the semantic web and poses many challenging problems. Issues that may be discussed include the mechanisms for identifying objects or concepts, how they may be referenced, do the approaches differ between databases and the semantic web and if so can they work together effectively? Of course many of these topics are related and discussion sessions will give participants a chance to explore the issues currently facing them in exploiting their data.
This workshop will bring together researchers from the database and the semantic web with emphasis on scientific applications to present the approaches from the 2 communities and to discuss the implications of combining these two worlds when sharing and integrating data. The workshop will be of interest to scientists and researchers in both database and semantic web communities and to and data managers responsible for managing scientific data where semantic web technologies are being used along with database technologies.
Draft Programme
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Thursday, Thursday October 12th
| 09:00 | Welcome | Jessie Kennedy |
| 9:15 | Data webs: new visions for research data on the Web | David Shotton |
| 9:45 | Closed World Assumption | Chris Date |
| 10:30 | Open World Assumption | Nick Drummond/Rob Shearer |
| 11:00-11:30 | Tea/Coffee | |
| 11:30 | The Semantic Gap between Databases and Ontologies | Catherine Dolbear |
| 12:00 | Nullogy | Chris Date |
| 13:00 - 14:00 | Lunch | |
| 14:00 | Missing Information | Chris Date |
| 15.30-16:00 | Tea/Coffee | |
| 16:00 | Incomplete and missing data in geoscience databases | Steve Henley |
| 16:30 | Integrating Genomic Mapping Data using Ontologies: A View from the Closed World | Trevor Paterson |
| 17:00 | Comparagrid Semantic Integration Technology | Matt Pocock |
Friday, October 13th
| 09:00 | Open ontologies | Dr Dave Robertson |
| 09:30 | Identity, URIs and the Semantic Web | Dr Henry Thompson |
| 10:30-11:00 | Tea/Coffee | |
| 11:00 | Don’t mix pointers and relations | Chris Date |
| 12:00 | Discussion | |
| 12:30-13:30 | Lunch | |
| 14:00 | Breakout Groups/Discussion | |
| 15:30-16:00 | Tea/Coffee | |
| 16:00 | End Workshop |
Questions for Discussion/Breakout sessions
Closed Versus Open World Questions
Registration
Registration can be made through the e-Science Institute web page for the workshop
Directions and Further Information
Information and Directions to the eScience Institute.
