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OpenHPI 1.2 - The Limits of the Web
 

OpenHPI 1.2 - The Limits of the Web

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Free online Lecture "Semantic Web Technologies" at OpenHPI. Visit the Course website, registration is free. You will find the lecture recordings as mp3 and also as video at ...

Free online Lecture "Semantic Web Technologies" at OpenHPI. Visit the Course website, registration is free. You will find the lecture recordings as mp3 and also as video at https://openhpi.de/course/semanticweb

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    OpenHPI 1.2 - The Limits of the Web OpenHPI 1.2 - The Limits of the Web Presentation Transcript

    • Semantic Web Technologies Lecture 1: The Web of Data 02: The Limits of the Web Dr. Harald Sack Hasso Plattner Institute for IT Systems Engineering University of Potsdam Spring 2013This file is licensed under the Creative Commons Attribution-NonCommercial 3.0 (CC BY-NC 3.0)
    • 2 Lecture 1: The Web of Data Open HPI - Course: Semantic Web Technologies Semantic Web Technologies , Dr. Harald Sack, Hasso Plattner Institute, University of Potsdam
    • 3 02: The Limits of the Web ... OpenHPI - Course Semantic Web Technologies - Lecture 1: The Web of Data Semantic Web Technologies , Dr. Harald Sack, Hasso Plattner Institute, University of Potsdam
    • How can we find something in the Web?4 Semantic Web Technologies , Dr. Harald Sack, Hasso Plattner Institute, University of Potsdam
    • current solution:5 Semantic Web Technologies , Dr. Harald Sack, Hasso Plattner Institute, University of Potsdam
    • 6 The Web is big. Really big. You just wont believe how vastly, hugely, mind-bogglingly big it is. (...according to Douglas Adams) Semantic Web Technologies , Dr. Harald Sack, Hasso Plattner Institute, University of Potsdam
    • 7 The Web is really big... •ca. 25 x 109 indexed documents in search engines (TNL Blog: Google has 24 billion items index, considers MSN search nearest competitor, September 2005) •Web Crawler: > 1012 (1 trillion) documents (The Official Google Blog: We knew the Web was Big....., Juli 25, 2008) •Google Search Index Caffeine comprises ca.100 Million Gigabytes i.e. 1017 Byte (SMX Video: Google’s Matt Cutts On Caffeine Launch, June 9, 2010, http://searchengineland.com/smx-video-googles-matt-cutts-on-caffeine-launch-43933) •DeepWeb (Darkweb) estimated to be about 550 times bigger than Surface Web (Bergman, 2001) Semantic Web Technologies , Dr. Harald Sack, Hasso Plattner Institute, University of Potsdam
    • ...and it‘s getting bigger every minute! Dr. Harald Sack, Hasso-Plattner-Institut Potsdam, Workshop: Interaktion und Visualisierung im Datenweb (IVDW 2012), Braunschweig, 20.09.2012
    • http://www.visualnews.com/2012/06/19/how-much-data-created-every-minute/Dr. Harald Sack, Hasso-Plattner-Institut Potsdam, Workshop: Interaktion und Visualisierung im Datenweb (IVDW 2012), Braunschweig, 20.09.2012
    • http://www.visualnews.com/2012/06/19/how-much-data-created-every-minute/Dr. Harald Sack, Hasso-Plattner-Institut Potsdam, Workshop: Interaktion und Visualisierung im Datenweb (IVDW 2012), Braunschweig, 20.09.2012
    • Semantic Web Technologien Quo vadis WWW ?10 Multimedia, Real-Time Data, Sensor Data, .... Semantic Web Technologies , Dr. Harald Sack, Hasso Plattner Institute, University of Potsdam
    • Semantic Web Technologien Quo vadis WWW ?11 Multimedia, Real-Time Data, Sensor Data, .... Semantic Web Technologies , Dr. Harald Sack, Hasso Plattner Institute, University of Potsdam
    • 12 and all the things will connect with social networks... Vorlesung Semantic Web, Dr. Harald Sack, Hasso-Plattner-Institut, Universität Potsdam
    • 13 Semantic Web Technologies , Dr. Harald Sack, Hasso Plattner Institute, University of Potsdam
    • Information in the WWW13 • what is important and how do you know? • what is information, what is advertisement? • what does the information mean? • how credible/trustworthy is the information? • what belongs together? • what is redundant? • Humans have contextual knowledge, world knowledge and experience to solve the problem Semantic Web Technologies , Dr. Harald Sack, Hasso Plattner Institute, University of Potsdam
    • 14 • The Web is supposed to be used by humans • The Web is based on the markup language HTML • HTML describes • how information is presented • how information is linked • but not, what the information means Semantic Web Technologies , Dr. Harald Sack, Hasso Plattner Institute, University of Potsdam
    • 15 Semantic Web Technologies , Dr. Harald Sack, Hasso Plattner Institute, University of Potsdam
    • Next sect ion16 GAME OVER 03: The Importance of Meaning OpenHPI - Course Semantic Web Technologies - Lecture 1: The Web of Data Semantic Web Technologies , Dr. Harald Sack, Hasso Plattner Institute, University of Potsdam