Now showing items 1-20 of 23

    • ALACA: a platform for dynamic alarm collection and alert notification in network management systems 

      Solmaz, S. E.; Gedik, B.; Ferhatosmanoğlu, H.; Sözüer, S.; Zeydan, E.; Etemoğlu, Ç. Ö. (John Wiley and Sons Ltd., 2017)
      Mobile network operators run Operations Support Systems that produce vast amounts of alarm events. These events can have different significance levels and domains and also can trigger other ones. Network operators face the ...
    • Algorithms for effective querying of compound graph-based pathway databases 

      Dogrusoz, U.; Cetintas, A.; Demir, E.; Babur, O. (BioMed Central Ltd., 2009)
      Background: Graph-based pathway ontologies and databases are widely used to represent data about cellular processes. This representation makes it possible to programmatically integrate cellular networks and to investigate ...
    • Architectural sketch recognition 

      Durgun, Fatoş Bengi; Özgüç, Bülent (1990)
      Sketch recognition is applied to freehand architectural drawings. The purpose is to recognize the architect’s intentions from a quick sketch and generate a detailed drawing. The system can also calibrate itself to interpret ...
    • Autofocus methodin thermal cameras basedon image histogram 

      Turgay, E.; Teke, O. (2011)
      In this paper, a new histogram based auto-focusing method for thermal cameras is proposed. This proposed method is realized by FPGA (Field Programmable Gate Array) and DSP (Digital Signal Processor) working together and ...
    • Çizge kesit yöntemi ile hiperspektral görüntülerde anomali tabanlı hedef tespiti 

      Batı, E.; Erdinç, Acar; Çeşmeci, D.; Çalışkan, A.; Koz, A.; Aksoy, Selim; Ertürk, S.; Alatan, A. A. (IEEE, 2015-05)
      Hiperspektral hedef tespiti için yürütülen çalışmalar genel olarak iki sınıfta degerlendirilebilir. İlk sınıf olan anomali tespit yöntemlerinde, hedefin görüntünün geri kalanından farklı oldugu bilgisi kullanılarak görüntü ...
    • Distributed block formation and layout for disk-based management of large-scale graphs 

      Yaşar, A.; Gedik, B.; Ferhatosmanoğlu, H. (Springer, 2017)
      We are witnessing an enormous growth in social networks as well as in the volume of data generated by them. An important portion of this data is in the form of graphs. In recent years, several graph processing and management ...
    • Economic design of EWMA control charts based on loss function 

      Serel, D. A. (Elsevier, 2009)
      For monitoring the stability of a process, various control charts based on exponentially weighted moving average (EWMA) statistics have been proposed in the literature. We study the economic design of EWMA-based mean and ...
    • An experiment to observe the impact of UML diagrams on the effectiveness of software requirements inspections 

      Albayrak, Ö. (IEEE, 2009)
      Software inspections aim to find defects early in the development process and studies have found them to be effective. However, there is almost no data available regarding the impact of UML diagram utilization in software ...
    • Fast ray tracing 3D models 

      İşler, Veysi; Özgüç, Bülent (1991)
      In many computer graphics applications such as CAD, realistic displays have very important and positive effects on the users of the system. There are several techniques to generate realistic images with the computer. Ray ...
    • Finding faces in news photos using both face and name information 

      Ozkan, D.; Duygulu P. (2006)
      We propose a method to associate names and faces for querying people in large news photo collections. On the assumption that a person's face is likely to appear when his/her name is mentioned in the caption, first all the ...
    • GCap: Graph-based automatic image captioning 

      Pan J.-Y.; Yang H.-J.; Faloutsos C.; Duygulu, P. (IEEE Computer Society, 2004)
      Given an image, how do we automatically assign keywords to it? In this paper, we propose a novel, graph-based approach (GCap) which outperforms previously reported methods for automatic image captioning. Moreover, it is ...
    • Human action recognition with line and flow histograms 

      Ikizler, N.; Cinbis, R.G.; Duygulu P. (2008)
      We present a compact representation for human action recognition in videos using line and optical flow histograms. We introduce a new shape descriptor based on the distribution of lines which are fitted to boundaries of ...
    • Image classification using subgraph histogram representation 

      Özdemir, B.; Aksoy, S. (2010)
      We describe an image representation that combines the representational power of graphs with the efficiency of the bag-of-words model. For each image in a data set, first, a graph is constructed from local patches of interest ...
    • Image histogram thresholding using Gaussian kernel density estimation (English) 

      Suhre, Alexander; Çetin, A. Enis (IEEE, 2013)
      In this article, image histogram thresholding is carried out using the likelihood of a mixture of Gaussians. In the proposed approach, a prob ability density function (PDF) of the histogram is computed using Gaussian kernel ...
    • Large flat plate models in the physical optics method for RCS calculations 

      Altintas, A.; Celik, A. (2004)
      The calculation of Radar Cross Section (RCS) of arbitrarily large perfectly conducting body is presented. The body is modelled as triangular meshes of any size by the help of graphical tools. For the calculation of scattered ...
    • A line based pose representation for human action recognition 

      Baysal, S.; Duygulu, P. (2013)
      In this paper, we utilize a line based pose representation to recognize human actions in videos. We represent the pose in each frame by employing a collection of line-pairs, so that limb and joint movements are better ...
    • LinGraph: a graph-based automated planner for concurrent task planning based on linear logic 

      Kortik S.; Saranli, U. (Springer New York LLC, 2017)
      In this paper, we introduce an automated planner for deterministic, concurrent domains, formulated as a graph-based theorem prover for a propositional fragment of intuitionistic linear logic, relying on the previously ...
    • Ottoman archives explorer: a retrieval system for digital Ottoman archives 

      Yalniz, I. Z.; Altingovde, I. S.; Güdükbay U.; Ulusoy, Ö. (Association for Computing Machinery, 2009-12)
      This article presents Ottoman Archives Explorer, a Content-Based Retrieval (CBR) system based on character recognition for printed and handwritten historical documents. Several methods for character segmentation and ...
    • Quantifying input uncertainty in an assemble-to-order system simulation with correlated input variables of mixed types 

      Akcay, A.; Biller, B. (Institute of Electrical and Electronics Engineers Inc., 2015)
      We consider an assemble-to-order production system where the product demands and the time since the last customer arrival are not independent. The simulation of this system requires a multivariate input model that generates ...
    • RailwayDB: adaptive storage of interaction graphs 

      Soulé R.; Gedik, B. (Association for Computing Machinery, 2016)
      We are living in an ever more connected world, where data recording the interactions between people, software systems, and the physical world is becoming increasingly prevalent. These data often take the form of a temporally ...