Talk in 4 parts Basic principles of the Semantic Web

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Presentation transcript:

Talk in 4 parts Basic principles of the Semantic Web Current state & results of the Semantic Web New challenges of the Semantic Web Very large-scale reasoning

Semantic Web Intro in 6 slides & a movie Frank van Harmelen

The Current Web of text and pictures The Future Web of Data and another web page about Frank This page is about the Vrije Uniersitei a web page in English about Frank And this page is about LarKC And this page is about Stefano ? ? ? linked web-pages, written by people, written for people, used only by people... ? ? linked data, usable by computers! useful for people! Many of these pages already come from data, that is usable by computers! But we can’t link the data....

http://www.youtube.com/watch?v=tBSdYi4EY3s

P1. Give all things a name

P2. Relations form a graph between things

P3. The names are addresses on the Web [<x> IsOfType <T>] x different owners & locations T <analgesic>

P1+P2+P3 = Giant Global Graph

P4. explicit & formal semantics assign types to things assign types to relations organise types in a hierarchy empose constraints on possible interpretations

Examples of “semantics” married-to Frank Lynda married-to Hazel Frank is male married-to relates males to females married-to relates 1 male to 1 female Lynda = Hazel lowerbound upperbound Semantics = predictable inference