Possibly imperfect ontologies for effective information retrieval [Elektronische Ressource] / by Gábor Nagypál

Gabor Nagypal

Sujets

• Informatik

Informations

• Publié par: karlsruher_institut_fur_technologie
• Publié le: 01 janvier 2007
• Nombre de lectures: 32
• Langue: English
• Poids de l'ouvrage: 5 Mo

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Gábor Nagypál
Possibly imperfect ontologies for effective information retrieval Possibly imperfect ontologies
for effective information retrieval
by
Gábor NagypálDissertation, Universität Karlsruhe (TH)
Fakultät für Informatik, 2007
Referenten: Prof. em. Dr. Dr. h. c. Peter C. Lockemann, Prof. Dr. Rudi Studer
Tag der mündlichen Prüfung: 16.05.2007
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ISBN: 978-3-86644-190-3ToBeaandBendi.Acknowledgments
I wrote this work during my time at the FZI Research Center for Information Technologies. I
would like to thank to all of my colleagues at FZI and especially to Simone Braun, Stephan
Grimm,HeikoPaoli,AndreasSchmidt,PeterTomczyk,andAndreasWalterforthegreatwork
ingatmospherethatmademyyearsatFZIenjoyable.
MyverywarmthanksgotoDr.WassiliosKazakos. Hesupportedmyworkduringhistimein
FZIandalsothereafter. Hereadandcommentedmanyversionsofmythesisfromtheearliest
versionstothelatestones. WealsoshareacommoninterestinhistoryandWassili’shistorical
comments definitely improved the historical quality of my examples in the thesis. Finally,
Wassili also helped me to start my life after my PhD work (yes, it seems that such a thing
reallyexists).
I am deeply indebted to Dr. Boris Motik who helped me to polish my ideas on fuzzy time
intervals that finally lead to this thesis. Boris also showed me how to pursue a PhD research
andhowtosuccessfullyfinishit,justbydoingitperfectlyright.
I am much obliged to Prof. em. Dr. Dr. h. c. Peter C. Lockemann, my thesis supervisor. He
helped start my research carrier in Germany by inviting me to FZI as a Marie Curie fellow.
Later he supported my application as a PhD student to Karlsruhe. He read and corrected
all of my written ideas and thesis versions amazingly fast but thoroughly during the last
years. It is clear that without him this thesis would not exist. I would also like to thank to
Prof. Dr. Rudi Studer who accepted my request to be my second supervisor despite of his nu
merous duties. In general, the scientific works of Prof. Studer’s group were always a great
inspirationtome.
My warm thanks go to dr. Sándor Gajdos, my thesis supervisor in Hungary, for his support
in the early times and also that he encouraged me to make this huge step and continue my
researchinGermany.
Iwouldliketothanktomystudents. Withouttheirsupport,workandideasitwouldhavebeen
impossible to implement and evaluate such a complex system. József Vadkerti implemented
thefirstversionofthesemanticsearchengineonLucenebasis. ZhigaoYuworkedalotonthe
userinterfaceoftheIRCONprototype. AndreasHintermeierimplementedthetooltoconstruct
fuzzytimeintervals. Finally,ÜmitYoldaselaboratedonandmyfirstvagueideas
about metadata generation. His work served as the basis for the metadata generation part of
thisthesis.
iAcknowledgments
Last but not least my biggest thank goes to my family. Without the whole life support of my
parents I would have not even dared to start my PhD research. My wife, Bea and my son,
Bendi, to whom this thesis is dedicated, tolerated the many evenings, nights and weekends I
hadtostealfromthemtofinishthiswork. BeapersuadedmetostayinGermanyandfinishmy
thesishere. Hercontinuoussupportwasinvaluableforsuccessfullyfinishingthisjourney.
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