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Patrick Minder, Aggregating social networks - entity resolution with face recognition, 08 2010. (bachelorsthesis)
The Internet, especially social network sites have become an integral part of our daily lives. Personal
data, stored in Internet resources, build a huge data set for social network analyis.
This bachelor thesis evaluates the feasibility of an entity resolution system based on face recogntion
with the goal to integrate several social networks in an aggregated one.
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Damian Schärli, AMIS risk score application - Applikationsaufbau und Vergleich mit Grace Score, 08 2010. (bachelorsthesis)
For the patients best care and assistance there are more and more new approaches and helps. There
is a need of data for a forecast of their medical condition. The evaluation of this data assists the
doctors with the planing of the medical therapy cycle. This thesis takes an established algorithm
and describes a new software, which can do this evaluation of data. The old software is replaced
by this newly developed program. There is the possibility to evaluate big amount of data, instead
of single data, in statistical analysis to show how well the algorithm works. Beyond this implementation
there is integrated another algorithm in the application, called Grace. Afterwards there
where done some statistical comparison, that showed the AMIS Prediction accuracy is better than
this of Grace.
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David Oertle, Kostenstellenbericht fu?r Professoren, 09 2010. (bachelorsthesis)
The professors of the University of Zurich never had the possibility to access their financial information,
which are stored and managed in the SAP system. In David Oertle?s bachelor thesis, supported
by the Business Applications BAP department of the University of Zurich, a project was
conducted that should resolve this issue. It resulted a SAP Web Dynpro based web application, on
which access can be granted through the already existing lecturer?s portal. The program allows the
users, among other things, to survey the actual status of their cost units as well as to see their
bookings and to export them.
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Minh Khoa Nguyen, Optimized disk oriented tree structures for RDF indexing: the B+Hash Tree, 08 2010. (bachelorsthesis)
The increasing growth of the Semantic Web has substantially enlarged the amount of data available
in RDF (Resource Description Framework) format. One proposed solution is to map RDF
data to relational databases. The lack of a common schema, however, makes this mapping inefficient.
RDF-native solutions often use B+Trees, which are potentially becoming a bottleneck, as the
single key-space approach of the Semantic Web may even make their O(log(n)) worst case performance
too costly. Alternatives, such as hash-based approaches, suffer from insufficient update
and scan performance. In this thesis a novel type of index structure called B+HASH TREE is being
proposed, which combines the strengths of traditional B-Trees with the speedy constant-time
lookup of a hash-based structure. The main research idea is to enhance the B+Tree with a Hash
Map to enable constant retrieval time instead of the common logarithmic one of the B+Tree. The
result is a scalable, updatable, and lookup-optimized, on-disk index-structure that is especially
suitable for the large key-spaces of RDF datasets. The approach is evaluated against existing RDF
indexing schemes using two commonly used datasets and show that a B+HASH TREE is at least
twice as fast as its competitors ? an advantage that this thesis shows should grow as dataset sizes
increase.
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Patrick Leibundgut, Ranking im Vergleich mit Hyperrectangle und Normalisierung als Verfahren zur Klassifizierung von Daten, 09 2010. (bachelorsthesis)
For the classification of instances you can use different methods. The use of geometric
distance or semantic distance for the kNN method provides a different result depending
on the distribution of the attributes. The semantic distance is because of its incorrect
interpretation of the distance significantly less correct with the classifications and thus
proves to be unsuitable for a classification. The comparison of the results of the ranking
and the normalization as pre-processing methods shows, that the ranking got better
results in the classification as the normalization with skew distributed attributes. The
normalisation performs better for attributes, that are not skew distributed.
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Stefan Christiani, A study on activity and location recognition using various sensors, October 2007. (bachelorsthesis)
In our everyday life, we move through different environments and undertake different activities. During some of those moments, we can handle disturbances, in others they become intolerable. Because of this, context sensitive mobile-phones become a potentially important part of our future. This paper presents an experiment, in which a series of sensors was analysed for their capacity to predict the context of a mobile phone on which they were attached to. This test device was then used to record data in real world scenarios, and the accuracy of the resulting predictions was measured. It could be shown that both activities and locations could be detected quite reliably in real world conditions and that certain sensors fare better then others.
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Christian Kündig, A User Model Editor for Ontology-based Cultural Personalization 2007. (bachelorsthesis)
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Anthony Lymer, Adaptivität im E-Learning: Entwicklung eines Ajax-basierten Eintrittstests für den Einsatz in Lernplattformen, October 2007. (bachelorsthesis)
Das Ziel dieser Arbeit ist es, einen adaptiven Eintrittstest fu?r ein bereits existierendes Lernsystem
zu gestalten. Dabei handelt es sich um das CasIS-Portal, welches das Bearbeiten von Fallstudien
elektronisch unterstu?tzt. In dieser Arbeit wird auf den Eintrittstest und dessen Schnittstellen zu
diesem Portal eingegangen.
Der Eintrittstest soll dem Benutzer vor der Bearbeitung einer Fallstudie helfen, indem er sein
aktuelles Können einschätzt und ihn dementsprechend berät. Nachdem der Test die Kompetenz
des Benutzers gepru?ft hat, werden ihm Lernmaterialien angeboten, damit ihm die Möglichkeit
eingeräumt wird, sich optimal auf die Fallstudie vorzubereiten. Der Eintrittstest ist dabei nicht
als Hu?rde zu verstehen, sondern bietet vielmehr eine Option, um Informationen u?ber das eigene
Können zu erhalten.
Die Arbeit umfasst sowohl die Entwicklung eines Authoring-Tools um Tests zu erstellen als
auch eine Delivery-Engine, welche den Benutzer mit Fragen beliefert und ihm anschliessend Vorbereitungsmodule
anbietet.The aim of this thesis is to develop an adaptive assessment test for the CasIS-Portal - an already
existing e-learning system, which assists users electronically with solving case studies.
This thesis is concerned with designing and attaching an assessment test to the portal.
The test should give support to a user by estimating his current knowledge and then informing
him accordingly.
After a test has been taken and the candidate?s competence has been assessed, he will be
shown the learning material, such that he has the possibility of preparing himself optimally for
the subsequent case study.
The test itself is not to be understood as an obstacle, but rather it provides an opportunity of
obtaining information about one?s current knowledge level.
The work done comprises not only the development of an authoring-tool to create tests but
also a delivery-engine, which presents questions to a candidate and offers him preparation modules.
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Peter Höltschi, Ein regel- und statistikbasiertes Empfehlungssystem für das Masterstudium in Informatik, September 2007. (bachelorsthesis)
In dieser Bachelorarbeit wird ein regel- und statistikbasiertes Empfehlungssystem für die Planung des
Masterstudiums in Informatik an der Universität Zürich spezifiziert, entworfen und an einem Prototypen
erprobt. Das System unterstützt Informatikstudierende bei der automatischen Erstellung von
Studienplänen. Dadurch wird zum einen die Einhaltung der Studienreglemente garantiert. Andererseits
erhalten die Studierenden ein Bild darüber, wie ihr Masterstudium aussehen könnte. Sie müssen dazu
die Daten ihres Leistungsausweises zur Verfügung stellen und Präferenzen zur Studienrichtung und zur
Modulwahl angeben. Aufgrund dieser Daten erstellt das System mittels mehrerer Filter- und
Sortierfunktionen die gewünschten Studienpläne. In einer Evaluation wurden Studierende um die
manuelle Erstellung eines Studienplans und der Angabe der Daten zur automatischen Erstellung
angefragt. Eine Analyse der Resultate und ein Vergleich zwischen dem manuellen und dem automatisch
erstellten Studienplan hat ergeben, dass die Qualität von letzterem stark von der Qualität und der
Menge der Präferenzangaben des Studenten abhängt. Zudem kam heraus, dass das System zur
optimalen Nutzung mit zusätzlichen Features ausgestattet werden sollte. This Bachelor Thesis describes the specification, design and implementation of a rule- and statistics
based recommendation system for the planning of the master study in informatics at the University of
Zurich. The system supports students in automatically generating study plans. On one hand, this
guaranties the compliance with the reglements of study. On the other hand, the students quickly get a
picture of how a master study plan can look like. For this to work, the student has to provide data of his
transcript of records, some details concerning his course of study and a choice of preferred lecture
contents. Based on this data, the system generates the study plans using filtering and sorting functions.
In an evaluation, some students were asked to provide a manually created study plan and the data for
automatically generating study plans. The analysis of the results and a comparison of the manually and
automatically generated study plans showed that the quality and quantity of the provided data have a
strong impact on the quality of the resulting study plans. To enhance the system, further features should
be implemented.
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Michael Imhof, Entwicklung eines RDF Parsers für transaktionsbasierte Daten, August 2007. (bachelorsthesis)
Der Java RDF Parser (JRP) ist ein Programm zum Einlesen von Files im RDF
Format und Extrahieren von transaktionsbasierten Daten, die anschliessend in einer
Datenbank gespeichert werden können. Diese Arbeit handelt von der Entwicklung
von JRP und bietet dem Leser einen Einblick in das Design des Codes, das
Datenbank-Schema und die Anbindung sowie eine Evaluation von Jena, der Java
Library die fu?r das Parsen der Daten benutzt wird. Selbstverständlich wurde das
Programm mit realen Daten getestet und bewies auf diese Art und Weise seine
korrekte Funktionalität. Leider kann bis jetzt nichts u?ber die Skalierbarkeit des
Parsers gesagt werden, da fu?r die Performance Tests keine grossen Datensätze
vorhanden waren. The Java RDF Parser (JRP) is a program to read in files in RDF format and extract
transactional data from it that can be stored in a database afterwards. This thesis is
about the development of JRP and gives an insight into the design of the code, the
database schema and connection, as well as an evaluation of Jena, the Java library
that is used to parse the input files. Naturally, the program was tested with real data
and proved the desired functionality. Unfortunately, nothing can be said about the
scalability of the parser, because there were no large datasets available for
performance tests.
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Stefan Schurgast, Export von Datenbankinhalten in Datenformate von Statistikprogrammen, December 2007. (bachelorsthesis)
Das sesamDB Projekt ist ein Teilprojekt der interdisziplinären Langzeitstudie sesam zur Ätiologie von
psychischen Erkrankungen. Es beschäftigt sich mit der Entwicklung der Datenbank fu?r
wissenschaftliche und administrative Daten von sesam sowie der Implementierung verschiedener
Clientanwendungen. Um die in sesam erhobenen Daten mittels Statistiksoftware analysieren zu
können, wurde eine Applikation entwickelt, die Daten aus der sesamDB in gängige Statistikformate
exportiert. Eine grafische Benutzeroberfläche ermöglicht es dem Anwender, die benötigten Daten
ohne Kenntnisse u?ber den Datenbankaufbau oder Datenanfragesprachen zu erhalten. Diese Arbeit
enthält eine Zusammenstellung verwandter Arbeiten sowie den Entwicklungsprozess und die
Architektur des Exportprogramms, Sesam Export Manager.The sesamDB Project is a subproject of the interdisciplinary long time study sesam about the etiology
of mental health. Its main task is to develop a database for scientific and administrative data for
sesam as well as the implementation of client applications. In order to analyze the stored data with
statistical analysis software, Sesam Export Manager has been built to extract data from sesamDB to
data types of popular statistics applications. The therefore developed graphical user interface helps
the user to obtain the data he needs without having knowledge of the underlying database schemes
or query languages. This paper contains a composition of related work, the development process and
the architecture of Sesam Export Manager.
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Philippe Hungerbühler, The Influence of SPAM on Performance, August 2007. (bachelorsthesis)
Almost every Internet user knows about the problem of SPAM. At work, especially, it costs time
to sort out irrelevant emails. This thesis deals with the problem of SPAM and its consequences
on productivity at work. For this reason an experiment has been conducted to examine the distraction
of SPAM and its perception. A few hypotheses, stated in advance, have been reviewed
on basis of this experiment. The results and the interpretation are presented and discussed in this
thesis.