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…

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…

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…

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…

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…

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…

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…

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…

Intraorganisationaler Wissenstransfer mit Wikis und Weblogs: Eine explorative Mehrfachfallstudie

Dissertation Alexander Stocker 2009

Web 2.0 has emerged as the new user-centered Web equipped with social features. It empowers users to become the main creators of content: Many successful platforms including Wikipedia, Youtube, Facebook and MySpace are built upon the principle of user-generated content. Stimulated by the huge success, innovative managers want to adopt…

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…

Social-focused Network Analysis of User Goals Extracted from a Large Search Query Log

Master's thesis Christian Körner 2009

Search engines represent a primary instrument for users of the World Wide Web to express their informational needs. However, during the process of search query formulation, the original intention behind a search query is often lost. This master's thesis aims to address this problem by studying the construction of different…

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…

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