Theses

Here you can find theses of Know-Center employees

Visualizing Research Fields based on Scholarly Communication on the Web

Dissertation Peter Kraker 2014

In science, information overload is not a contemporary issue. At the beginning of a scientific study, it is therefore usually quite cumbersome to get an overview of a research field. In this thesis, I aim to address this problem of classic literature search with visualizations based on scholarly communication on…

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…

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…

Relevanz-Feedback in Information Retrieval Systemen

Thesis (old curriculum) Peter Prettenhofer 2009

This thesis explores the use of connectionist models for adaptive information retrieval. In general, adaptive information retrieval refers to the process of adapting the search towards the users context and need (cf. [Joho et al., 2008]). In particular, the goal of an adaptive information retrieval system is to improve retrieval…

Assoziative Suche für das Semantic Web - Ein netzbasierter Suchansatz unter Berücksichtigung semantischer und inhaltsbasierter Ähnlichkeiten

Dissertation Peter Scheir 2008

While in the current Web information is largely gathered by humans, the Semantic Web aims at having this task performed by computer programs. To achieve this goal information on the Web is enriched with machine-interpretable data that allows for identifying the meaning (semantics) of information on the Web. Approaches to…

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…

Magick - Ein Werkzeug für Cross-Media Clustering und Visualisierung

Thesis (old curriculum) Mathias Lux 2004

The high tide of digital information, that that takes course towards us in 21st century, brings along enough motivation for research and developments in the area of information retrieval. The con-junction of different media like TV, radio, Internet, newspapers and telephone leads to a heterogeneous information landscape in which uniform…

Anwendung von MPEG-7 für multimediale Suchsysteme

Thesis (old curriculum) Werner Klieber 2003

The aim of knowledge retrieval is an efficient knowledge finding in complex knowledge spaces. In this thesis a Multimedia query Framework is realized that supports Multimedia queries composed of different media types linked together for a unique query request. The user does not have to enter Low-level data. The Multimedia…

Visualisation Islands: Interactive Visualisation and Clustering of Search Result Sets

Thesis (old curriculum) Vedran Sabol 2001

The amount of knowledge available electronically is increasing exponentially. Huge amounts of information are available over the Internet and searching for a specific topic often results in a large number of matches. A significant portion of hits is often not at all of interest and the retrieved information contains no…

Detecting social interactions via mobile sensing

Master's thesis Markus Perndorfer

During a typical day, we have several social interactions with different people belonging to different semantic groups (e.g. Friends, family, co-workers). In this paper we try to find promising hypothesis to link data collected from a mobile sensing application running on the users smartphone to the social interactions he has…

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