Elsevier- The Contribution of Semantic Web Technology o Ontologies and thesauri(very lightweight ontologies) have proved to be a key technology for effective information access They help to overcome some of the problems of free-text search They relate and group relevant terms in a specific domain They provide a controlled vocabulary for indexing information 6 Chapter 6 A Semantic Web primer
6 Chapter 6 A Semantic Web Primer Elsevier – The Contribution of Semantic Web Technology ⚫ Ontologies and thesauri (very lightweight ontologies) have proved to be a key technology for effective information access – They help to overcome some of the problems of free-text search – They relate and group relevant terms in a specific domain – They provide a controlled vocabulary for indexing information
Elsevier- The Contribution of Semantic Web Technology(2) o A number of thesauri have been developed in different domains of expertise Medical information Mesh and elsevier's life science thesaurus ENtree o RDF is used as an interoperability format between heterogeneous data sources EMTREE is itself represented in RDF 7 Chapter 6 A Semantic Web primer
7 Chapter 6 A Semantic Web Primer Elsevier – The Contribution of Semantic Web Technology (2) ⚫ A number of thesauri have been developed in different domains of expertise – Medical information: MeSH and Elsevier’s life science thesaurus EMTREE ⚫ RDF is used as an interoperability format between heterogeneous data sources ⚫ EMTREE is itself represented in RDF
Elsevier- The Contribution of Semantic Web Technology (3) o Each of the separate data sources is mapped onto this unifying ontology The ontology is then used as the single point of entry for all of these data sources 8 Chapter 6 A Semantic Web primer
8 Chapter 6 A Semantic Web Primer Elsevier – The Contribution of Semantic Web Technology (3) ⚫ Each of the separate data sources is mapped onto this unifying ontology – The ontology is then used as the single point of entry for all of these data sources
Lecture Outline Horizontal Information products at elsevier 2. Data Integration at Aud 3. Skill Finding at Swiss Life 4. Think Tank Portal at enersearch 5. E-Learning 6. Web services 7. Other Scenarios 9 Chapter 6 A Semantic Web primer
9 Chapter 6 A Semantic Web Primer Lecture Outline 1. Horizontal Information Products at Elsevier 2. Data Integration at Audi 3. Skill Finding at Swiss Life 4. Think Tank Portal at EnerSearch 5. E-Learning 6. Web Services 7. Other Scenarios
Audi- The problem o Data integration is also a huge problem internal to companies It is the highest cost factor in the information technology budget of large companies Audi operates thousands of databases e Traditional middleware improves and simplifies the integration process But it misses the sharing of information based on the semantics of the data 10 Chapter 6 A Semantic Web primer
10 Chapter 6 A Semantic Web Primer Audi – The Problem ⚫ Data integration is also a huge problem internal to companies – It is the highest cost factor in the information technology budget of large companies – Audi operates thousands of databases ⚫ Traditional middleware improves and simplifies the integration process – But it misses the sharing of information based on the semantics of the data