Bilgisayar Mühendisliği: Recent submissions

  • Multivariate decision trees for machine learning 
    Yıldız, Olcay Taner. (Thesis (M.S.)- Bogazici University. Institute for Graduate Studies in Science and Engineering, 2000., 2000.)
    In this thesis, we detail and compare univariate, linear decision tree methods using a set of simulations on twenty standard data sets. For univariate decision tree methods, we have used the ID3 algorithm and for multivariate ...
  • Translation with user computation 
    Aydoğdu, Salih Can. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    Human Computation aims to solve problems by means of combining the power of human and computer computation. The typical approach is to assign tasks to computers and humans based on what they are better capable of performing. ...
  • Model checking of ambient calculus specifications against ambient logic formulas 
    Akar, Ozan. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    Formal methods are mathematical techniques applied in specification and verification of concurrent interactive systems. Model checking is a widely used formal method for formal verification of systems. In model checking, ...
  • Morphological annotation of a corpus with a collaborative multiplayer game 
    Güngör, Onur. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    In most of the natural language processing tasks, state of the art systems usually rely on machine learning methods for building their mathematical models. Given that the majority of these systems employ supervised learning ...
  • Imitation of human arm movements by a humanoid robot using monocular vision 
    Kurt, Barış. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    A sociable robot must have the capability to imitate agents around it. In a human society, people generally teach new skills to other people by demonstration. Hence, our artificial partners should be able to learn from us ...
  • Parser evaluation using textual entailments 
    Eker, Önder. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    Syntactic parsing is a basic problem in natural language processing. It can be de ned as assigning a structure to a sentence. Two prevalent approaches to parsing are phrase-structure parsing and dependency parsing. A related ...
  • Alignment and multimodal analysis in signed speech 
    Santemiz, Pınar. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    In this thesis, we attack the problem of extracting isolated signs from continuous signed speech videos. Signed speech is a language that uses the signs of sign language and the grammar of spoken language. It is a visual ...
  • RFID enhanced wireless sensor networks for healthcare monitoring 
    Alemdar, Hande Özgür. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    Becoming mature enough to be used for improving the quality of life, wireless sensor network technologies are considered as one of the key research areas in computer engineering and healthcare application industries. In-home ...
  • Design and implementation of a biped walking algorithm for Nao humanoid robots 
    Gökçe, Barış. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    In this thesis, we proposed a signal-based omni-directional bipedal walking algorithm which will be used in humanoid robot soccer domain. We generate a central periodic signal which is used to synchronize other signals in ...
  • Statistical comparison of classifiers using receiver operating characteristics information 
    Aslan, Özlem. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    Statistical tests in the literature mainly use error rate for comparison and assume equal loss for false positives and negatives. Receiver Operating Characteristics (ROC) curves and/or the Area Under the ROC Curve (AUC) ...
  • Modeling and performance analysis of cognitive radio networks 
    Çavdar, Derya. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    Cognitive radio heralds the next step in the evolution of wireless communications. Cognitive radio networks are inherently priority based and preemptive. Hence, keeping track of each resource in each cell is mandatory. In ...
  • A virtual path routing algorithm for ATM networks based on the equivalent bandwidth concept 
    Bür, Kaan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1998., 1998.)
    The coexistence of services with different quality of service (QoS) requirements in today's networks makes the efficient use of resources a major issue. It is desirable to improve network efficiency by adaptively assigning ...
  • Prediction of code refactoring using class and file level software metrics 
    Köşker, Yasemin. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    Maintenance costs as a proportion of software development cost could be very high, especially in multi version real-time systems such as in telecommunications domain due to tight coupling of modules. The readability of the ...
  • Channel selection algorithm for software defined radio based cognitive radios 
    Zümbül, Adem. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    Radio spectrum is a finite resource and effective utilization of it in wireless networks is a key challenge as the number of users increase. Current wireless networks are expected to fail to satisfy increasing user demands ...
  • Automatic TV logo detection and classification 
    Özay, Nedret. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    Television (TV) logos are the only semantic objects that appear commonly in all TV broadcast videos. And they can be utilized in the development of many useful applications such as TV commercial detection, and audience ...
  • Parallel AAA and mobile IP registrarion for high performance and scalable mobile roaming 
    Demirkol, Aykut Soner. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    An important part of the communication technology currently depends on the wireless networking. With the increase in the connectivity needs, many types of wireless technologies have been deployed to ensure the coverage of ...
  • Cooperative sign language tutoring: a multiagent approach 
    Yıldırım, İlker. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    Sign language is the natural means of communication for the hearing-impaired. Sign languages are based on signs, which are a combination of hand gestures, facial expressions, and head movements. Teaching these visual ...
  • Mitigation techniques for the energy hole problem in wireless sensor networks 
    Bojaxhiu, Ilir. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    Uneven energy consumption in wireless sensor networks can drastically reduce the network lifetime. The large number of sensors reporting to a single data collection sink exposes the sensors around the sink to a higher ...
  • Source file level software defect prediction framework 
    Çelik, Melih. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    Defect prediction techniques are used to address defective sections of source code in software products. Applying a defect prediction technique before proceeding to testing phase of software development helps the managers ...
  • Moving object information for location based services 
    Kantar, Sabri. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    Delivering personalized services to subscribers is a relatively new challenging area for GSM content providers. One of the most effective ways to personalize mobile services is to make use of the location of the mobile ...

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