Here you can find theses of Know-Center employees

Modelling and Acquiring Knowledge about Human Goals

Dissertation Mark Kröll 2012

Realizing the vision of machines behaving intelligently requires theacquisition of real-world knowledge including, but not limited to, knowledgeabout human goals. Understanding human goals can help (i) to answer "why"questions about user behavior and user interactions, (ii) to reason aboutpeople's goals or (iii) to generate action sequences that implement goals (plangeneration).…

Aufzeichnung von mobilen Sensordaten

Master's thesis Stefan Edler 2012

  Mobile phone sensing has started as an area of research and development when mobile phones became smartphones due to the different technological improvements. Research in this area, referring to the amount of publications, is growing very fast and it is not restricted to a large research group. Mobile phone…

Extraction and Evaluation of Facts from Tweets

Bachelor's thesis Michael R. Kralowetz 2012

The goal of this thesis is to extract, evaluate and store information from tweets, thereby creating a gateway between the Semantic Web and the World Wide Web. Using a generated dataset from the social networking- and microblogging service Twitter, so called, from us defined, facts are filtered by using regular…

A User-centered Approach to Information Quality Assessment in Social Software Systems

Dissertation Nicolas Weber 2012

Over the past decade, the enormous increase in user generated content on the Web has provided an inexhaustible source of information, so much so that being able to find or locate a required piece of information has become more and more like finding a needle in a haystack. The problem…

Discovery, Triplification and Consumption of Pertinent Resources from Linked Open Data

Dissertation Atif Latif 2011

Linked Data provides a framework for the generation, publishing and sharing of information by use of semantic technologies. The Linking Open Data initiative plays a vital role in the realization of the Semantic Web at a global scale by publishing and interlinking diverse data sources on the Web. The access…

Identifikation von relevanten Konzepten in einem Ontologie-basierten Kontext-Modell

Master's thesis Georg Kompacher 2011

Managing the massive amount of continously increasing personal information is becoming ever more difficult. Unobstrusive observation of the user in order to understanding the present user context can enable better support for the knowledge worker. The goal of this thesis is to identify entities of a user interaction context model…

Focused Crawling in the Context of Digital Libraries

Thesis (old curriculum) Andreas Juffinger 2011

Automated document development within digital libraries and also the World Wide Web is gathering increasing momentum. Focused Crawling aims to retrieve relevant documents and has been primarily used in combination with search engines to build topic specific indexes. Automated crawling can also assist people to find data on the World…

Evaluierung web-basierter 3D-Technologien

Master's thesis Markus Bader 2010

People are confronted with an ever increasing amount of information each day, therefore meaningful information visualisations become more and more important. High quality 3D contents can be found on the web more often, due to faster computer hardware and higher internet bandwidth. So information visualisations on the web provide an…

Analyse und Kategorisierung von Twitter Feeds

Master's thesis Christopher Horn 2010

Social networks like Twitter are the latest trend in the globalized world. Twitter is used in different scenarios by a broad set of different users. Mining their messages may reveal valuable information. In this thesis, we propose a way to automatically classify Tweets (and thus the users) using a supervised…

Visualisierung und dynamische Aggregierung von semantischen Graphen

Master's thesis Martin Kandlhofer 2010

The enormous growth of data and content over the last few years resulted in large amounts of complex information hosted on heterogeneous systems. Semantic technologies, which have seen rapid adoption in recent years, employ a formalized, machine-understandable representation of knowledge to facilitate sharing and reuse of the stored information and…

Automatic Support for Ontology Evaluation - Review of Entailed Statements and Assertional Effects for OWL Ontologies

Dissertation Viktoria Pammer 2010

The typical goal of representing knowledge formally is to make knowledge accessible to machines. Hence, knowledge representation formalisms are chosen to accommodate well to the strengths of machines, often at the expense of being less easy to understand for humans. At the same time, formal representations are most often created…

User Interaction Context - Studying and Enhancing Automatic User Task Detection on the ComputerDesktop via an Ontology-based User Interaction Context Model

Dissertation Andreas S. Rath 2010

User context detection has recently gained momentum, thanks to the interest shown by several established research areas, such as information retrieval, personal information management, technology enhanced learning as well as task and process management. In the information retrieval area user context is exploited for personalizing search, in personal information management…

Umsetzung einer Web 2.0 Plattform zur Diskussion von strukturierten Inhalten

Master's thesis Philipp Ast 2010

As more and more companies spread and get connected externally, a huge part of the key success factors is located beyond their own sphere of action. For success in management, it is more important than ever to collect information about the views and objectives of one's core partners and stakeholders…

Tracing and Understanding Discussions on the Web

Thesis (old curriculum) Selver Softic 2009

This work investigates methods to trace and understand discussions in on-line communities primarily in discussion forums carried out on the Web. The scope of this work focuses on opinion mining possibilities regarding Web-based discussion forums. A prototype was developed and evaluated as proof of concept, regarding a given domain, for…

Authentifizierung in Netzwerken unter Verwendung eines Single Sign-On Systems

Thesis (old curriculum) Alexander Plaschke 2009

Usage of distributed network services and applications has recently become an integral element in daily corporate business as well as in private use. Nevertheless, users have to interact and communicate with a variety of systems, each one using its own dedicated identification mechanism. Over a certain period of time users…


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