Recent Submissions

  • Pragmatics in human-computer conversations 

    Saygin, A. P.; Cicekli, I. (Elsevier, 2002-03)
    This paper provides a pragmatic analysis of some human-computer conversations carried out during the past six years within the context of the Loebner Prize Contest, an annual competition in which computers participate in ...
  • 3D Model compression using Connectivity-Guided Adaptive Wavelet Transform built into 2D SPIHT 

    Kose, K.; Cetin, A. E.; Gudukbay, U.; Onural, L. (Elsevier, 2010-01)
    Connectivity-Guided Adaptive Wavelet Transform based mesh compression framework is proposed. The transformation uses the connectivity information of the 3D model to exploit the inter-pixel correlations. Orthographic ...
  • Hypergraph Partitioning-Based Fill-Reducing Ordering for Symmetric Matrices 

    Catalyurek, U. V.; Aykanat, C.; Kayaaslan, E. (Society for Industrial and Applied Mathematics, 2011-08-18)
    A typical first step of a direct solver for the linear system Mx = b is reordering of the symmetric matrix M to improve execution time and space requirements of the solution process. In this work, we propose a novel ...
  • A link-based storage scheme for efficient aggregate query processing on clustered road networks 

    Demir, E.; Aykanat, C.; B. Barla Cambazoglu (Elsevier, 2010-01)
    The need to have efficient storage schemes for spatial networks is apparent when the volume of query processing in some road networks (e.g., the navigation systems) is considered. Specifically, under the assumption that ...
  • Reducing query overhead through route learning in unstructured peer-to-peer network 

    Ciraci, S.; Korpeoglu, I.; Ulusoy, O. (Elsevier, 2009-05)
    In unstructured peer-to-peer networks, such as Gnutella, peers propagate query messages towards the resource holders by flooding them through the network. This is, however, a costly operation since it consumes node and ...
  • The State of the Art in Mobile Graphics Research 

    Capin, T.; Pulli, K.; Aenine Moller, T. (IEEE, 2008-07)
    High-quality computer graphics let mobile-device users access more compelling content. Still, the devices' limitations and requirements differ substantially from those of a PC. This survey of mobile graphics research ...
  • Rate-Distortion Efficient Piecewise Planar 3D Scene Representation from 2-D Images 

    Imre, E.; Alatan, A. Aydin; Gudukbay, U. (IEEE, 2009-01-20)
    In any practical application of the 2-D-to-3-D conversion that involves storage and transmission, representation effi- ciency has an undisputable importance that is not reflected in the attention the topic received. In ...
  • Nearest-Neighbor based Metric Functions for indoor scene recognition 

    Cakir, F.; Gudukbay, U.; Ulusoy, O. (Elsevier, 2011-11)
    Indoor scene recognition is a challenging problem in the classical scene recognition domain due to the severe intra-class variations and inter-class similarities of man-made indoor structures. State-of-the-art scene ...
  • Exploiting interclass rules for focused crawling 

    Sengor Altingovde, I.; Ulusoy, O. (IEEE, 2004-11)
    A focused crawler gathers relevant Web pages on a particular topic. This rule-based Web-crawling approach uses linkage statistics among topics to improve. a baseline focused crawler's harvest rate and coverage.
  • A layout algorithm for undirected compound graphs 

    Dogrusoz, U.; Giral, E.; Cetintas, A.; Civril, A.; Demir, E. (Elsevier, 2009-03-15)
    We present an algorithm for the layout of undirected compound graphs, relaxing restrictions of previously known algorithms in regards to topology and geometry. The algorithm is based on the traditional force-directed layout ...
  • A novel method for scaling iterative solvers: avoiding latency overhead of parallel sparse-matrix vector multiplies 

    Selvitopi, R. O.; Ozdal, M. M.; Aykanat, C. (IEEE, 2015-03)
    In parallel linear iterative solvers, sparse matrix vector multiplication (SpMxV) incurs irregular point-to-point (P2P) communications, whereas inner product computations incur regular collective communications. These P2P ...
  • Experiences in teaching a graduate course on model-driven software development 

    Tekinerdogan, B. (Taylor & Francis, 2011-12-01)
    Model-driven software development (MDSD) aims to support the development and evolution of software intensive systems using the basic concepts of model, metamodel, and model transformation. In parallel with the ongoing ...
  • A catalog of stream processing optimizations 

    Hirzel, M.; Soute, R.; Schneider, S.; Gedik, B.; Grimm, R. (Association for Computing Machinery, Inc., 2014-04-01)
    Various research communities have independently arrived at stream processing as a programming model for efficient and parallel computing. These communities include digital signal processing, databases, operating systems, ...
  • Novelty detection for topic tracking 

    Aksoy, C.; Can, F.; Kocberber, S. (John Wiley and Sons, 2011-12-06)
    Multisource web news portals provide various advantages such as richness in news content and an opportunity to follow developments from different perspectives. However, in such environments, news variety and quantity can ...
  • Deriving feasible deployment alternatives for parallel and distributed simulation systems 

    Celik, T.; Tekinerdogan, B.; Imre, K. (ACM New York, NY, USA, 2013-07-01)
    Parallel and distributed simulations (PADS) realize the distributed execution of a simulation system over multiple physical resources. To realize the execution of PADS, different simulation infrastructures such as HLA, DIS ...
  • MaterialVis: Material visualization tool using direct volume and surface rendering techniques 

    Okuyan, E.; Gudukbay, U.; Bulutay, C.; Heinig, K. H. (Elsevier, 2014-05)
    Visualization of the materials is an indispensable part of their structural analysis. We developed a visualization tool for amorphous as well as crystalline structures, called Material Vis. Unlike the existing tools, ...
  • Bounding the equilibrium distribution of Markov population models 

    Dayar, T.; Hermanns, H.; Spieler, D.; Wolf, V. (John Wiley and Sons, 2011-10-17)
    We propose a bounding technique for the equilibrium probability distribution of continuous-time Markov chains with population structure and infinite state space. We use Lyapunov functions to determine a finite set of ...
  • First turkish software product line engineering workshop summary 

    Tekinerdogan, B. (ACM New York, NY, USA, 2012-11-27)
    Software reuse has been a goal of the software community since the early days of software engineering. In this context software product line engineering (SPLE) has gained a broad interest in both academic institutions and ...
  • BilKristal 2.0: A tool for pattern information extraction from crystal structures 

    Okuyan, E.; Gudukbay, U. (Elsevier, 2014-01)
    We present a revised version of the BilKristal tool of Okuyan et al. (2007). We converted the development environment into Microsoft Visual Studio 2005 in order to resolve compatibility issues. We added multi-core CPU ...
  • Vertical framing of superimposed signature files using partial evaluation of queries 

    Kocberber, A. S.; Can, F. (Elsevier, 1997-05)
    A new signature file method, Multi-Frame Signature File (MFSF), is introduced by extending the bit-sliced signature file method. In MFSF a signature file is divided into variable sized vertical frames with different on-bit ...

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