Theses

Here you can find theses of Know-Center employees

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…

Visual Approach of Utilizing Mobile Sensor Data

Master's thesis Georg Bachmann 2012

When looking at the development of mobile devices in the past few years, it is obvious that smartphones and tablet computers are gaining more and more relevance. In Austria alone, smartphones constitute around one third of all mobile phones in use. Not only do smartphones get faster processors, more efficient…

Aspects of User Motivation in Social Tagging Systems

Dissertation Christian Körner 2012

Tagging describes the process of annotating resources with terms - so called "tags" - in order to enable better organization, retrieval and sharing of information. Today, a large number of diverse applications exist that allow users to annotate digital information from their libraries on the web. These systems are referred…

Visual Analysis of Relatedness and Dynamics in Complex, Enterprise-Scale Repositories

Dissertation Vedran Sabol 2012

Large data repositories, such as those used in enterprises, typically store many millions of unstructured, human-readable documents, which contain complex, high-dimensional, multi-faceted information. Such repositories exhibit a highly dynamic behavior characterized by continuous adding, removing and modification of the data set elements. This work deals with the development and application…

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…

Entwicklung einer Toolbar zur kollaborativen Qualitätsbewertung und Qualitätssteigerung in MediaWiki

Bachelor's thesis Wilhelm Jobstmann 2011

A MediaWiki is a Social Web application which supports a group or users to collaboratively create, maintain and share content. The main functionalities of a MediaWiki are creating, editing and linking articles to supply navigation between them and to add articles to categories ([Barrett, 2009]). In some cases it is…

Webbasierte Überwachung und Visualisierung von Anlagedaten

Master's thesis Thomas Gebhard 2010

The 21st century is characterized by a tremendous waste of energy and non-renewable resources. The effects of this behavior can be noticed throughout the world. Our society has already started to some extent to change their way of consumption towards a more sustainable utilization of available resources. The increasing importance…

Suche und Klassifikation von informationstechnologischen Spezifikationen

Master's thesis Matthias Hilpold 2010

In our days the amount of digital data increases every day. A part of this data is available through the Internet for everyone and at any time. Different search engines support the user to find the desired information on the Internet. Even on an Intranet of a large company the…

Analysis of Sequences of Machine States

Master's thesis Martin Stimpfl 2010

Data Mining is a keyword for methods and algorithms which are more and more evolving and raising expectations in many fields of information technology nowadays. Computer-aided "mining" for complex correlations in huge bulks of data is a topic of particular interest for a software company from Graz being engaged in…

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…

Erfassung semantischer Informationen aus enzyklopädischen Daten

Master's thesis Andreas Augustin 2008

In the last years the amount of data has been massivly growing and keeps on growing, hence it became necessary to develop new methods to overcome this large amount of data. Besides the search capability improvements, one of the main forces in current research on data mining is the need…

Managementreporting mittels Java SOA Framework

Thesis (old curriculum) Mario Prettner 2008

Business management do have to make decisions. Key data and operating figures are building the main support rising these challenges. But the enormously growth of transactional data mostly stored in databases with enhancement of functionality of software systems at the same time, reuse and expandability of software components or libraries,…

Examining E-Learning And Discovering Issues Far More Important

Dissertation Narayanan Kulathuramaiyer 2008

E-Learning has been predominantly seen as a course management system focusing mainly on the needs of the instructor. We view E-Learning as being the Knowledge Transfer aspect of Knowledge Management, with networked systems facilitating knowledge creation, organization and archiving. We propose a Knowledge Management Model for Guided Internalisation that enables…

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