Theses

Here you can find theses of Know-Center employees

SPARQL-Query Wizard

Master's thesis Karl Kappaun 2012

The Internet evolves from a simple collection of linked documents and a user which is only a consumer of the offered information, to an more interactive space, where the concept of „meaning“ gains more and more importance. The Semantic Web is born and comes with an evolution of interlinked, machine…

A general, web-based Information Extraction System using GATE and the Stanford Parser

Bachelor's thesis Paul Laufer 2012

This work presents the design and scientific background of a web-based information extraction system using the open-source GATE-library 1 (General Architecture for text engineering) [Ham12]. The application provides an extendable architecture for server-based high-level information extraction. Textual resources are annotated using a set of tools according to both, their semantic…

Usage-based Calculation of Knowledge Maturing Indicators for Digital Resources in a Personal and Organizational Learning and Maturing Environment

Master's thesis Dieter Theiler 2012

Research in the field of ‘Knowledge Maturing’ focuses on improving knowledge construction processes within organizations. As guidance of knowledge workers plays an important role when it comes to developing knowledge, tools are sought to foster ‘Knowledge Maturing’-related activities. In this master thesis, ‘Knowledge Maturing Indicators’ get calculated upon traces of…

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…

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…

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…

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…

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…

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…

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…

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