The Key Problem of Today's Web o The meaning of Web content is not machine accessible: lack of semantics o It is simply difficult to distinguish the meaning between these two sentences I am a professor of computer science I am a professor of computer science you may think. Well, 6 Chapter 1 A Semantic Web primer
6 Chapter 1 A Semantic Web Primer The Key Problem of Today’s Web ⚫ The meaning of Web content is not machineaccessible: lack of semantics ⚫ It is simply difficult to distinguish the meaning between these two sentences: I am a professor of computer science. I am a professor of computer science, you may think. Well, . .
The Semantic Web Approach o Represent Web content in a form that is more easily machine-processable o Use intelligent techniques to take advantage of these representations o The semantic Web will gradually evolve out of the existing Web, it is not a competition to the current ww 7 Chapter 1 A Semantic Web primer
7 Chapter 1 A Semantic Web Primer The Semantic Web Approach ⚫ Represent Web content in a form that is more easily machine-processable. ⚫ Use intelligent techniques to take advantage of these representations. ⚫ The Semantic Web will gradually evolve out of the existing Web, it is not a competition to the current WWW
Lecture Outline Todays Web 2. The Semantic Web Impact 3. Semantic Web Technologies 4. A Layered Approach 8 Chapter 1 A Semantic Web primer
8 Chapter 1 A Semantic Web Primer Lecture Outline 1. Today’s Web 2. The Semantic Web Impact 3. Semantic Web Technologies 4. A Layered Approach
The Semantic Web Impact Knowledge Management o Knowledge management concerns itself with acquiring, accessing, and maintaining knowledge within an organization o Key activity of large businesses: internal knowledge as an intellectual asset o It is particularly important for international geographically dispersed organizations e Most information is currently available in a weakl structured form(e.g. text, audio, video 9 Chapter 1 A Semantic Web primer
9 Chapter 1 A Semantic Web Primer The Semantic Web Impact – Knowledge Management ⚫ Knowledge management concerns itself with acquiring, accessing, and maintaining knowledge within an organization ⚫ Key activity of large businesses: internal knowledge as an intellectual asset ⚫ It is particularly important for international, geographically dispersed organizations ⚫ Most information is currently available in a weakly structured form (e.g. text, audio, video)
Limitations of Current Knowledge Management Technologies e Searching information Keyword-based search engines EXtracting information human involvement necessary for browsing, retrieving interpreting, combining Maintaining information inconsistencies in terminology, outdated information ● Viewing information Impossible to define views on Web knowledge 10 Chapter 1 A Semantic Web primer
10 Chapter 1 A Semantic Web Primer Limitations of Current Knowledge Management Technologies ⚫ Searching information – Keyword-based search engines ⚫ Extracting information – human involvement necessary for browsing, retrieving, interpreting, combining ⚫ Maintaining information – inconsistencies in terminology, outdated information. ⚫ Viewing information – Impossible to define views on Web knowledge