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…

Visualisierung heterogener Datensätze in strukturierten Informationsressourcen

Master's thesis Belgin Mutlu 2012

The concept of the semantic web provides a pragmatic way for the structured informa- tion retrieval based on relationships within a content of the linked data. This retrieval is realized by applying the specific queries, i.e. SPARQL queries, on well-constructed data models. Besides the filter and navigation functions, a result…

Rule-based test data extraction for training machine learning algorithms

Bachelor's thesis Florian Salbrechter 2011

In this thesis we examine the automatic generation of training data in order to train a machine learning algorithm. We will use a rule-based approach to generate the training data which is build using the GATE Natural Language Processing framework. The machine learning algorithm is using a statistical model, the…

Content Facets for Individual Information Needs in Media

Dissertation Elisabeth Lex 2011

The amount of content published in traditional media is huge and steadily growing. Additionally, social media gained momentum since people use blogs to share comments and opinions to current events. However, blog content is questionable in respect to quality since blogs are neither reviewed nor edited. From the media consumer…

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…

User Model Serivces for Adaptive Work-integrated Learning

Master's thesis Günter Beham 2011

A major challenge when designing software for work-integrated learning (WIL) is that the system provides real-time learning support adapted to a user’s situation and background knowledge (adaptive system). In order to adapt to the user’s situa- tion and characteristics, a user model is needed that is continuously updated to the…

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…

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…

Pragmatic Analysis of Tagging Motivation in Social Tagging Systems

Master's thesis Hans-Peter Grahsl 2010

Social tagging systems allow users to annotate different kinds of web-resources (URLs, photos, publications etc.) by means of a freely chosen and unbounded vocabulary of terms, so-called tags. While earlier research has been primarily focused on the analysis of the structure and the dynamics of social tagging systems, research has…

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…

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…

Evaluating the Domain Model of Adaptive Work-Integrated Learning Systems

Dissertation Barbara Kump 2010

Adaptive learning systems have been suggested as highly promising means to support work-integrated learning. Adaptivity in a learning system is the result of a complex interaction between a domain model, a learner model and an instructional model. Existing approaches for evaluating adaptive learning systems take into account the learner model…

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…

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