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10.03.2017

CeBIT 2017

Also this year, tele-TASK and openHPI are at CeBIT (20-24 March, 2017). You can find us at the HPI booth ... [more]
01.08.2016

openHPI Course "Internetworking 2016"

A new openHPI course about "Internetworking" starts on September 5, 2016. The course is held by Prof. Dr. Christoph Meinel ... [more]
19.05.2016

openHPI Workshop "Embedded Smart Home"

We are going to offer a new openHPI workshop "Embedded Smart Home" in German language. More Infocan be found here ... [more]

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Lecture-Feed of Series: Semantic Web Technologien (WS 2012/13) Feed of Series: Semantic Web Technologien (WS 2012/13)

Semantic Web Technologien (WS 2012/13)

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Dr. Harald Sack

Successor of this series: Semantic Web Technologien (WS 2013/14)

Predecessor of this series: Semantic Web Technologien (WS 2011/12)

Das Web ist heute schon längst zum festen Bestandteil unseres täglichen Lebens geworden. Doch was haben wir außer einer gigantischen und unsortierten Flut von Informationen gewonnen? Wir alle kennen das Problem: Suchen wir nach einer bestimmten Information, werden wir von einer Lawine unnötiger und nicht relevanter Information erschlagen und das Herauspicken der wirklich wichtigen Details gestaltet sich als langwieriger und aufwändiger Prozess.

Semantic Web Technologien bieten mit Hilfe formaler interoperabler Metadatenstandards einen möglichen Ausweg aus diesem Dilemma. Grundgedanke dabei ist es, die Bedeutung der Web-Inhalte mit Hilfe geeigneter Wissensrepräsentationstechniken zu formalisieren und zu annotieren. Dadurch wird deren Semantik nicht nur maschinenlesbar, sondern maschinenverstehbar. Neue Fakten können aus vorhandenen Informationen gewonnen werden und automatisch von einer Vielzahl neuer Anwendungen automatisch kombiniert und genutzt werden.

Einleitung

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Date: 16.10.2012
Lang.: de
Dur.: 01:23:58
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• Introduction 00:18:26
• From Internet to Web 2.0 00:15:57
• Quo Vadis WWW? 00:23:19
• Semantic Web 00:16:20
• Applications 00:09:56

Semantic Web Basisarchitektur

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Date: 30.10.2012
Lang.: de
Dur.: 01:27:23
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• RDF und RDFa 00:11:58
• Vokabular 00:22:56
• Semantik im WWW 00:12:42
• Zusätzliche Funktionalität 00:26:13
• RDF und html 5 00:13:34
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Date: 06.11.2012
Lang.: de
Dur.: 01:31:04
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• SPARQL 00:10:14
• SPARQL 1.0 00:18:12
• SPARQL Query Format 00:20:33
• SPARQL Result Format 00:11:14
• SPARQL 1.1 00:12:52
• Property Parts 00:17:59
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Date: 13.11.2012
Lang.: en
Dur.: 01:30:19
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• Ontologies 00:20:23
• Ontology in Classical Greek Philosophy 00:20:01
• Ontologies in Late Antiquity and Early Middle Ages 00:19:44
• How should we represent Ontologies? 00:20:35
• Ontology Types 00:09:36

Knowledge Representation and Logics

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Date: 20.11.2012
Lang.: de
Dur.: 01:33:09
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• Foundations of Logic 00:16:11
• Variants of Semantics 00:23:41
• PL - Model-theoretic Semantics 00:16:53
• Canonical Form 00:16:38
• Resolution 00:19:46
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Date: 27.11.2012
Lang.: de
Dur.: 01:36:42
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• Motivation 00:12:55
• Description Logics Overview 00:17:11
• ALC - Syntax and Semantic 00:18:21
• Inference and Reasoning 00:18:35
• Tableaux Algorithm 00:14:03
• Tableaux Algorithm Extensions for FOL 00:15:37
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Date: 04.12.2012
Lang.: de
Dur.: 01:23:52
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• Why do we need semantics for RDF(S) 00:11:23
• Model-theoretic semantics 00:10:31
• Simple Interpretation 00:17:24
• RDF Interpretation 00:06:23
• RDFS Interpretation 00:11:22
• RDF(S) RDF(S) Entailment 00:18:36
• Completeness of the Deduction Calculus 00:07:43
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Date: 11.12.2012
Lang.: de
Dur.: 01:20:00
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• OWL 1 - Overview 00:14:57
• OWL 1 - Syntax Variants 00:34:39
• Properties 00:09:58
• Tools 01:20:00
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Date: 18.12.2012
Lang.: de
Dur.: 01:28:00
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• Development of OWL2 00:11:45
• From SHOIN(D) to SHROIK(D) 00:13:26
• General Property Inclusion 00:23:27
• OWL2 Syntax 00:17:00
• Complexity and other Properties 00:08:23
• OWL2 Profiles 00:13:59
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Date: 08.01.2013
Lang.: de
Dur.: 01:25:40
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• OWL2 Web Ontology Language 00:05:36
• Can we do SPARQL with OWL? 00:15:12
• Rules from a Semantic Web Perspective 00:18:20
• Rules for OWL and SWRL 00:09:36
• Rules expressible in OWL 00:25:08
• Exchanging Rules with RIF 00:11:48

Applications in the "Web of Data"

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Date: 15.01.2013
Lang.: de
Dur.: 01:25:06
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• In General 00:23:38
• Method of Ushold and King 00:13:50
• Ontology 101 00:10:23
• Unified Process for Ontology 00:10:10
• Ontology Design Patterns 00:07:20
• Ontology Learning 00:09:51
• Ontology Mapping 00:09:54
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Date: 22.01.2013
Lang.: de
Dur.: 01:27:18
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• How to get Data from the Web 00:06:38
• Linked Data Principles 00:18:24
• Creative Common CC-BY 00:11:56
• Information Retrieval 00:06:43
• Search Engines in the Web 00:23:08
• How to use semantic data in Retrieval 00:20:29
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