Ph.D. Theses: Recent submissions

  • Sevim, İsmail. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2022., 2022)
    In the Network Design Problem (NDP), one aims to design the configuration of a network by installing links between a set of given nodes and determine the flow of a set of commodities over these installed links. In this ...
  • Sivrikaya, Özgür Emre. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2022., 2022)
    Multiple Instance Learning (MIL) is a weakly supervised approach that focuses on the labeling of a set of instances (i.e. bags) where the label information of in dividual instances is generally unknown. Many of the earlier ...
  • Ahat, Betül. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2022., 2022)
    With the expansion of mobile devices and new trends in mobile communication technologies, there is an increasing demand for diversified services. To accommodate a large number of services on a common network, it becomes ...
  • Baykut, Alper. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2002., 2002.)
    This thesis studies methodologies to combine multiple classifiers to improve classification accuracy. Different classifiers, training methods and combination algorithms are covered throughout this study. The classifiers ...
  • Tanınmış, Kübra. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)
    Influence Maximization Problem involves nding a set of individuals in a social network to trigger an in uence/information spread, i.e., a seed set, such that the maximum possible number of individuals are in uenced. In ...
  • Aras, Necati. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1999., 1999.)
    Neural networks are among the most rapidly developing new scientific tools. There are numerous publications reporting their success in estimation and optimization. This work concentrates on both of these aspects and applies ...
  • Yıldız, Zeynep Gökçe. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)
    Disease spread models are important in controlling the new infectious diseases that suddenly threaten the public health. Mathematical tools are especially impor tant to understand the spread of the disease since experiments ...
  • Çivi, Hakan. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Sciences and Engineering, 1997., 1997.)
    Implicit algebraic 2D curves and 3D surfaces are among the most powerful shape representations. With this approach, objects in 2D images are described by their silhouettes (em surfaces in 3D) and then represented by 2D ...
  • Sivrikaya-Şerifoğlu, Funda. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1997., 1997.)
    In this thesis, a new uniform order-based crossover operator to be used in genetic algorithm applications to combinatorial optimization problems is presented. There are three pure types of combinatorial problems: assignment, ...
  • Şahinkoç, Hayrullah Mert. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)
    Many-objective evolutionary approaches try to characterize and overcome the challenges posed by the large number of objectives and have been shown to be very e ective for achieving good Pareto approximations. Despite the ...
  • Adıyeke, Esra. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)
    Multi-target datasets (MTD) require simultaneous prediction of several variables hence they are considered to be more challenging in terms of predictive tasks compared to single-target datasets. Mining of MTD requires ...
  • Kalay, Serkan. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)
    We investigate tactical level production planning problem in process industries, with float glass manufacturing being the specific application domain. Process industries are cost intensive, and as a result, efficient usage ...
  • Dursun, Pınar. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    Volumetric modulated arc therapy is the state-of-the-art technique for external radiation therapy treatment, where radiation can be delivered continuously during the rotation of the linear accelerator’s gantry. This property ...
  • Şuvak, Zeynep. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    It is a commonly used approach to model real life problems as network flow prob lems and they appear in a wide range of areas including telecommunication, wireless networks, transportation, healthcare and scheduling. Our ...
  • Lök, Emel Şeyma. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    Many real-world applications of classification require flexibility in representing complex objects to preserve the relevant information for class separation. Multiple instance learning (MIL) aims to solve classification problem ...
  • Erbeyoğlu, Gökalp. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    Humanitarian logistics activities, which aim to alleviate the suffering of the population after a sudden and calamitous event, confront us with a large number of interrelated and challenging network optimization problems. ...
  • Edalı, Mert. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    In this thesis, we propose a three-stage analysis procedure to interpret input output relationships of agent-based simulation models. In the first stage, we use meta models of agent-based models to approximate the input-output ...
  • Şeker, Oylum. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    Graph coloring is the problem of assigning a minimum number of colors to all vertices of a graph such that no two vertices that are linked by an edge receive the same color. The selective graph coloring problem is a ...
  • Kabakulak, Banu. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    Channel coding is the term used for the collection of techniques that are employed in order to minimize errors which occur during the transmission of digital information from one place to another. Low–density parity–check ...
  • Özdamar, Linet. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1991., 1991.)
    Resource constrained scheduling problems are generally solved by optimization techniques which cannot accomodate large size problems with respect to computation time. Yet, fast and near optimal schedules are required in ...

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