Browsing Ph.D. Theses by Title

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  • Network-centric warfare communications with wireless sensor networks and data fusion 
    Önel, Tolga. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    In this thesis we aim to design efficient algorithms for wireless ad hoc sensor networks that are supporting network-centric warfare operations. These algorithms should conform to the hard end to end QoS requirements. They ...
  • Neural named entity recognition for morphologically rich languages 
    Güngör, Onur. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2021., 2021.)
    Named entity recognition (NER) is an important task in natural language pro cessing (NLP). Until the revival of neural network based models for NLP, NER taggers employed traditional machine learning approaches or finite-state ...
  • New dynamic group key agreement protocols and their formal analysis and applications 
    Ermiş, Orhan. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    The essence of dynamic group key agreement protocols is to help compute a secure key for a group communication with a dynamic set of participants in distributed systems. Dynamic group key agreement protocols are expected ...
  • Nonuniformity in wireless sensor networks 
    Koşar, Rabun. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)
    Deemed as suitable for various challenging sensing tasks, wireless sensor networks evolve as candidates for deployment to different environments to perform the given task for as long as possible. Those networks operate ...
  • Novel models for credit card fraud detection 
    Kültür, Yiğit. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    Financial institutions attach great importance to credit card fraud detection, as a natural consequence of the multi-billion dollar annual losses incurred due to credit card fraud. Rule based systems have been commonly ...
  • On the evolutionary coupling and its measurement 
    Kırbaş, Serkan. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    Evolutionary Coupling (EC) is the implicit relationship between the artifacts or parts of the software system that are frequently changed together during evolution of a system. Understanding the EC in software systems is ...
  • Ontology-based entity tagging and normalization in the biomedical domain 
    Karadeniz Erol, Zeynep İlknur. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    One of the challenges for scientists in the biomedical domain is the huge amount and the rapid growth of information buried in the text of electronic resources. Developing text mining methods to automatically extract ...
  • Optimization and orchestration in multi-tier edge computing 
    Baktır, Ahmet Cihat. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2021., 2021.)
    In addition to the efforts in the next-generation cellular networks and traditional network services, the demand for a novel set of services leveraged through smart devices and artificial intelligence (AI) techniques ...
  • Optimization of next generation solar-powered radio access networks 
    Pamuklu, Turgay. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)
    Due to the incontrovertible effects of global warming, society grows its sustainabil ity awareness regularly, and governments start to change their energy policies to pro mote green energy sources. However, mobile network ...
  • Parallel network flow algorithms 
    Kara, Gökçehan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2022., 2022)
    Network flows is an active area of research that has applications in a wide variety of fields. Several network flow problems are reduced to either the maximum flow problem or the minimum cost flow problem. Maximum flow ...
  • Performance and cost efficient reliability framework for multicore architectures 
    Arslan, Sanem. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    Modern architectures become more vulnerable to soft errors with technology scaling. Enabling fault tolerance capabilities on all cache structures in a system is ine cient in terms of performance and power consumption. In ...
  • Person detection and tracking using omnidirectional cameras, and rectangle blanket problem 
    Demiröz, Barış Evrim. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    Person detection and tracking can provide the crucial analysis needed to avoid accidents with autonomous machinery, optimize environments for effciency and assist the elderly. Omnidirectional cameras have a large field ...
  • Player profiling and analysis of abusive behavior in social games 
    Balcı, Mehmet Koray. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    Online multiplayer games create new social platforms, with their own etiquette, social rules of conduct and ways of expression. What counts as aggressive and abusing behavior may change depending on the platform, but most ...
  • Priority scheduling for heterogeneous workloads in computing clusters 
    Çavdar, Derya. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2015., 2015.)
    Nowadays, large computing clusters constantly strive for an optimal tradeo between resource e ciency and performance. In this thesis, we are concerned with the e cient use of system resources and we also aim to improve ...
  • Privacy managment in online social networks 
    Kökciyan, Nadin. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    People are willing to share their personal information in social networks. The users are allowed to create and share content about themselves and others. When multiple entities start distributing content without a control, ...
  • Qualitative system identification 
    Say, Ahmet Celal Cem. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1992., 1992.)
    The main contribution of this research in the qualitative reasoning area of Artificial Intelligence is the development of the qualitative system identification algorithm QSI. QSI's input is a description of the qualitative ...
  • Quality of experience - driven dynamic adaptive streaming over HTTP 
    Özçelik, İhsan Mert. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2021., 2021.)
    Dynamic Adaptive Streaming över HTTP (DASH) became the pillax of mul timedia content delivery mechanisms in the last decade. Given fluctuating network conditions, over-the-top content platforms struggle with delivering a ...
  • Quality of service aware contention and deployment quality analysis in multimedia wireless sensor networks 
    Dönmez, Mehmet Yunus. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    Emerging multimedia applications for wireless sensor networks (WSN) require the co-existence of different types of traffic with different quality of service (QoS) provisions in terms of latency and throughput. Prioritization ...
  • Quality-of-service-aware multicast routing for multimedia applications in mobile ad hoc networks 
    Bür, Kaan. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    The conceptual shift in the expectations of wireless users towards multimedia andgroup-oriented computing has a significant impact on today̕s networks in terms of needfor mobility, quality of service (QoS) and multicast ...
  • Real-time human hand pose estimation and tracking using depth sensors 
    Kıraç, Mustafa Furkan. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2013., 2013.)
    The human hand has become an important interaction tool in computer systems. Using the articulated hand skeleton for interaction was a challenge until the development of input devices and fast computers. In this thesis, ...

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