Browsing MF  Makale Koleksiyonu  Bilgisayar Mühendisliği Bölümü / Department of Computer Engineering by Issue Date
Now showing items 120 of 68

A factorized high dimensional model representation on the nodes of a finite hyperprismatic regular grid
(Elsevier Science inc, 20050525)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 ... 
Hybrid high dimensional model representation (HHDMR) on the partitioned data
(Elsevier B.V., 20060101)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 ... 
Parallel univariate decision trees
(Elsevier B.V., 20070501)Univariate decision tree algorithms are widely used in data mining because (i) they are easy to learn (ii) when trained they can be expressed in rule based manner. In several applications mainly including data mining, the ... 
Comment on "Encryption and decryption of images with chaotic map lattices" [Chaos 16, 033118 (2006)]
(American Institute of Physics Inc., 200809)In this paper, we comment on the chaotic encryption algorithm proposed by A. N. Pisarchik et al. [Chaos 16, 033118 (2006)]. We demonstrate that the algorithm is not invertible. We suggest simple modifications that can ... 
Cryptanalysis of a cryptosystem based on discretized twodimensional chaotic maps
(Elsevier Science BV, 20081117)Recently, an encryption algorithm based on twodimensional discretized chaotic maps was proposed [Xiang et al., Phys. Lett. A 364 (2007) 252]. In this Letter, we analyze the security weaknesses of the proposal. Using the ... 
The routine designmodular distributed modeling platform for distributed routine design and simulationbased testing of distributed assemblies
(Cambridge University Press, 20081212)In this paper we describe a conceptual framework and implementation of a tool that supports taskdirected, distributed routine design (RD) augmented with simulationbased design testing. In our research, we leverage the ... 
Integrating vendors into cooperative design practices
(Taylor & Francis Ltd, 2009)This paper describes a new approach to cooperative design using distributed, offtheshelf design components. The ultimate goal is to enable assemblers to rapidly design their products and perform simulations using parts ... 
Algebraic break of a cryptosystem based on discretized twodimensional chaotic maps
(Elsevier Science BV, 20090330)Recently, a cryptosystem based on twodimensional discretized chaotic maps was proposed [T. Xiang, et al., Phys. Lett. A 364 (2007) 252]. In this Letter, we cryptanalyze the proposal using algebraic methods. We give three ... 
Cryptanalysis of a chaosbased image encryption algorithm
(Elsevier Science BV, 20090330)A chaosbased image encryption algorithm was proposed in [Z.H. Guan, F. Huang, W. Guan, Phys. Lett. A 346 (2005) 153]. In this Letter, we analyze the security weaknesses of the proposal. By applying chosenplaintext and ... 
Incremental construction of classifier and discriminant ensembles
(Elsevier Science Inc, 20090415)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 ... 
Comment on "Modified Baptista type chaotic cryptosystem via matrix secret key" [Phys. Lett. A 372 (2008) 5427]
(Elsevier Science BV, 20090907)In this comment, we analyze a recently proposed Baptistalike cryptosystem and show that it is not invertible. Others weaknesses are also reported. A modified version of this cryptosystem is proposed to show how to overcome ... 
Crossing minimization in weighted bipartite graphs
(Elsevier B.V., 200912)Given a bipartite graph G = (L0, L1, E) and a fixed ordering of the nodes in L0, the problem of finding an ordering of the nodes in L1 that minimizes the number of crossings has received much attention in literature. The ... 
Fully decentralized and collaborative multilateration primitives for uniquely localizing WSNs
(Springer International Publishing AG, 2010)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 ... 
Cryptanalysis of a multichaotic systems based image cryptosystem
(Elsevier Science BV, 20100115)This paper is a cryptanalysis of a recently proposed multichaotic systems based image cryptosystem. The cryptosystem is composed of two shuffling stages parameterized by chaotically generated sequences. We propose and ... 
Cryptanalysis of Fridrich's chaotic image encryption
(World Scientific Publishing, 201005)We cryptanalyze Fridrich's chaotic image encryption algorithm. We show that the algebraic weaknesses of the algorithm make it vulnerable against chosenciphertext attacks. We propose an attack that reveals the secret ... 
Cryptanalysis of a new substitutiondiffusion based image cipher
(Elsevier Science BV, 201007)This paper introduces two different types of attacks on a recently proposed cryptosystem based on chaotic standard and logistic maps. In the two attacks, only a pair of (plaintext/ciphertext) was needed to totally break ... 
Forcedirected approaches to sensor localization
(Assoc Computing Machinery, 201009)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 ... 
Algebraic break of image ciphers based on discretized chaotic map lattices
(Elsevier Science Inc, 20110101)In this paper, we provide an algebraic cryptanalysis of a recently proposed chaotic image cipher. We show that the secret parameters of the algorithm can be revealed using chosenplaintext attacks. Our attack uses the orbit ... 
Mobile applications discovery: a subscribercentric approach
(Wiley Periodicals, 201103)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 ... 
Mapping classifiers and datasets
(PergamonElsevier Science Ltd, 201104)Given the posterior probability estimates of 14 classifiers on 38 datasets, we plot twodimensional maps of classifiers and datasets using principal component analysis (PCA) and Isomap. The similarity between classifiers ...