Now showing items 18-37 of 48

  • Eigenclassifiers for combining correlated classifiers 

    Ulaş, Aydın; Yıldız, Olcay Taner; Alpaydın, Ahmet İbrahim Ethem (ELSEVIER SCIENCE INC, 2012-03-15)
    In practice, classifiers in an ensemble are not independent. This paper is the continuation of our previous work on ensemble subset selection [A. Ulas, M. Semerci, O.T. Yildiz, E. Alpaydin, Incremental construction of ...
  • Facial expression recognition based on anatomy 

    Eskil, Mustafa Taner; Benli, Kristin Surpuhi (Academic Press INC Elsevier Science, 2014-02)
    In this study, we propose a novel approach to facial expression recognition that capitalizes on the anatomical structure of the human face. We model human face with a high-polygon wireframe model that embeds all major ...
  • Factored particle filtering with dependent and constrained partition dynamics for tracking deformable objects 

    Eskil, Mustafa Taner (SPRINGER, 2014-10)
    In particle filtering, dimensionality of the state space can be reduced by tracking control (or feature) points as independent objects, which are traditionally named as partitions. Two critical decisions have to be made ...
  • A factorized high dimensional model representation on the nodes of a finite hyperprismatic regular grid 

    Tunga, Mehmet Alper; Demiralp, Metin (Elsevier Science inc, 2005-05)
    When the values of a multivariate function f(x(1),...,x(N)), having N independent variables like x(1),...,x(N) are given at the nodes of a cartesian, product set in the space of the independent variables and ail interpolation ...
  • Force-Directed Approaches to Sensor Localization 

    Efrat, Alon; Forrester, David; Iyer, Anand; Kobourov, Stephen G.; Erten, Cesim; Kılıç, Yasin Ozan (ASSOC COMPUTING MACHINERY, 2010-09)
    As the number of applications of sensor networks increases, so does the interest in sensor network localization, that is, in recovering the correct position of each node in a network of sensors from partial connectivity ...
  • Fully Decentralized and Collaborative Multilateration Primitives for Uniquely Localizing WSNs 

    Çakıroğlu, Arda; Erten, Cesim (SPRINGER INTERNATIONAL PUBLISHING AG, 2009)
    We provide primitives for uniquely localizing WSN nodes. The goal is to maximize the number of uniquely localized nodes assuming a fully decentralized model of computation. Each node constructs a cluster of its own and ...
  • A hybrid approach to private record matching 

    İnan, Ali; Kantarcıoğlu, Murat; Ghinita, Gabriel; Bertino, Elisa (IEEE COMPUTER SOC, 2012-10)
    Real-world entities are not always represented by the same set of features in different data sets. Therefore, matching records of the same real-world entity distributed across these data sets is a challenging task. If the ...
  • Hybrid high dimensional model representation (HHDMR) on the partitioned data 

    Tunga, Mehmet Alper; Demiralp, Metin (Elsevier B.V, 2006)
    A multivariate interpolation problem is generally constructed for appropriate determination of a multivariate function whose values are given at a finite number of nodes of a multivariate grid. One way to construct the ...
  • Implicit theories and self-efficacy in an introductory programming course 

    Tek, Faik Boray; Benli, Kristin Surpuhi; Deveci, Ezgi (IEEE-Inst Electrical Electronics Engineers Inc, 2018-08-01)
    Contribution: This paper examined student effort and performance in an introductory programming course with respect to student-held implicit theories and self-efficacy. Background: Implicit theories and self-efficacy ...
  • Incremental construction of classifier and discriminant ensembles 

    Ulaş, Aydın; Semerci, Murat; Yıldız, Olcay Taner; Alpaydın, Ahmet İbrahim Ethem (ELSEVIER SCIENCE INC, 2009-04-15)
    We discuss approaches to incrementally construct an ensemble. The first constructs an ensemble of classifiers choosing a subset from a larger set, and the second constructs an ensemble of discriminants, where a classifier ...
  • Integrating vendors into cooperative design practices 

    Eskil, Mustafa Taner; Sticklen, Jon (TAYLOR & FRANCIS LTD, 2009)
    This paper describes a new approach to cooperative design using distributed, off-the-shelf design components. The ultimate goal is to enable assemblers to rapidly design their products and perform simulations using parts ...
  • Kaotik kriptografinin çilesi 

    Solak, Ercan (IEEE, 2013)
    Despite being an active research area for the last two decades, chaotic cryptography has not found a place in mainstream cryptography literature. This paper explores the reasons for this separation.
  • Mapping classifiers and datasets 

    Yıldız, Olcay Taner (PERGAMON-ELSEVIER SCIENCE LTD, 2011-04)
    Given the posterior probability estimates of 14 classifiers on 38 datasets, we plot two-dimensional maps of classifiers and datasets using principal component analysis (PCA) and Isomap. The similarity between classifiers ...
  • Mobile applications discovery: a subscriber-centric approach 

    Erman, Bilgehan; İnan, Ali; Nagarajan, Ramesh; Uzunalioğlu, Hüseyin (WILEY PERIODICALS, 2011-03)
    Rapid adoption of smartphones and the business success of the Apple App Store have resulted in the rampant growth of mobile applications. Seeking new revenue opportunities from application development has created a gold ...
  • Model selection in omnivariate decision trees using Structural Risk Minimization 

    Yıldız, Olcay Taner (ELSEVIER SCIENCE INC, 2011-12)
    As opposed to trees that use a single type of decision node, an omnivariate decision tree contains nodes of different types. We propose to use Structural Risk Minimization (SRM) to choose between node types in omnivariate ...
  • Modeling and simulation support to the defense planning process 

    Çayırcı, Erdal; Özçakır, Lütfü (SAGE Publications Inc., 2017-04)
    Defense planning is a crucial part of the defense process. It identifies the capabilities required for the future defense environment, analyzes the capability shortfalls, prioritizes them, and provides the fundamental ...
  • Nearest neighbor weighted average customization for modeling faces 

    Abeysundera, Hasith Pasindu; Benli, Kristin Surpuhi; Eskil, Mustafa Taner (Springer Berlin Heidelberg, 2013-10)
    In this paper, we present an anatomically accurate generic wireframe face model and an efficient customization method for modeling human faces. We use a single 2D image for customization of the generic model. We employ ...
  • A novel kernel to predict software defectiveness 

    Yıldız, Olcay Taner; Okutan, Ahmet (Elsevier Science Inc., 2016-09)
    Although the software defect prediction problem has been researched for a long time, the results achieved are not so bright. In this paper, we propose to use novel kernels for defect prediction that are based on the ...
  • An observation based muscle model for simulation of facial expressions 

    Erkoç, Tuğba; Ağdoğan, Didem; Eskil, Mustafa Taner (Elsevier Science Bv, 2018-05)
    This study presents a novel facial muscle model for coding of facial expressions. We derive this model from unintrusive observation of human subjects in the progress of the surprise expression. We use a generic and ...
  • Omnivariate Rule Induction Using a Novel Pairwise Statistical Test 

    Yıldız, Olcay Taner (IEEE Computer Soc, 2013-09)
    Rule learning algorithms, for example, RIPPER, induces univariate rules, that is, a propositional condition in a rule uses only one feature. In this paper, we propose an omnivariate induction of rules where under each ...