Browsing Computer Science by OzU Authors "Aktemur, Tankut Barış"
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Adaptive domain-specific service monitoring
Ünsal, A. A.; Sazara, G.; Aktemur, Tankut Barış; Sözer, Hasan (Springer Science+Business Media, 2014)We propose an adaptive and domain-specific service monitoring approach to detect partner service errors in a cost-effective manner. Hereby, we not only consider generic errors such as file not found or connection timed ... -
ADVISOR: An adjustable framework for test oracle automation of visual output systems
Genç, A. E.; Sözer, Hasan; Kıraç, Mustafa Furkan; Aktemur, Tankut Barış (IEEE, 2020-09)Test oracles differentiate between the correct and incorrect system behavior. Automation of test oracles for visual output systems mainly involves image comparison, where a snapshot of the output is compared with respect ... -
Automatically learning usage behavior and generating event sequences for black-box testing of reactive systems
Kıraç, Mustafa Furkan; Aktemur, Tankut Barış; Sözer, Hasan; Gebizli, C. Ş. (The ACM Digital Library, 2019-06)We propose a novel technique based on recurrent artificial neural networks to generate test cases for black-box testing of reactive systems. We combine functional testing inputs that are automatically generated from a model ... -
Autotuning runtime specialization for sparse matrix-vector multiplication
Yılmaz, Buse; Aktemur, Tankut Barış; Garzaran, M. J.; Kamin, S.; Kıraç, Mustafa Furkan (ACM, 2016-04)Runtime specialization is used for optimizing programs based on partial information available only at runtime. In this paper we apply autotuning on runtime specialization of Sparse Matrix-Vector Multiplication to predict ... -
CPU design simplified
Yıldız, A.; Uğurdağ, Hasan Fatih; Aktemur, Tankut Barış; İskender, Deniz; Gören, S. (IEEE, 2018-12-10)The first goal of this paper is to introduce a simple and customizable soft CPU named VerySimpleCPU (VSCPU), which could be easily implemented on FPGAs with a complete toolchain including instruction set simulator, assembler, ... -
Effort estimation for architectural refactoring to introduce module isolation
Öztürk, F.; Sarılı, E.; Sözer, Hasan; Aktemur, Tankut Barış (Springer, 2014)The decomposition of software architecture into modular units is driven by both functional and quality concerns. Dependability and security are among quality concerns that require a software to be decomposed into separate ... -
FAS: introducing a service for avoiding faults in composite services
Gülcü, K.; Sözer, Hasan; Aktemur, Tankut Barış (Springer Science+Business Media, 2012)In service-oriented architectures, composite services depend on a set of partner services to perform the required tasks. These partner services may become unavailable due to system and/or network faults, leading to an ... -
Fast and efficient implementation of lightweight crypto algorithm PRESENT on FPGA through processor instruction set extension
Varıcı, Abdullah; Sağlam, Gürol; İpek, Seçkin; Yıldız, A.; Gören, S.; Aysu, A.; İskender, Deniz; Aktemur, Tankut Barış; Uğurdağ, Hasan Fatih (IEEE, 2019)As Internet of Things (IoT) technology becomes widespread, the importance of information security increases. PRESENT algorithm is a major lightweight symmetric-key encryption algorithm for IoT devices. Compared to the ... -
Fault masking as a service
Gülcü, Koray; Sözer, Hasan; Aktemur, Tankut Barış; Ercan, Ali Özer (Wiley, 2014-07)In SOA, composite services depend on a set of partner services to perform their tasks. These partner services may become unavailable because of system and/or network faults, leading to an increased error rate for the ... -
Optimization by runtime specialization for sparse matrix-vector multiplication
Kamin, S.; Jesus Garzaran, M.; Aktemur, Tankut Barış; Xu, D.; Yılmaz, Buse; Chen, Z. (ACM, 2014)Runtime specialization optimizes programs based on partial information available only at run time. It is applicable when some input data is used repeatedly while other input data varies. This technique has the potential ... -
Preface
Kim, S.; Uchitel, S.; Garbervetsky, D.; Aktemur, Tankut Barış; Kroening, D.; Orso, A.; Nagappan, N.; Xie, T.; Mueller, P.; Cataldo, M.; Tillmann, N.; Margaria-Steffen, T.; Tonetta, S.; Bradley, A.; Chen, N.; Caso, G. de; Ferrara, P.; He, N.; Kassios, I.; Kicillof, N.; Lewis, M.; Meyer, D.; Nagel, R.; Nimal, V.; Pandita, R.; Pavese, E.; Rajan, A.; Roveri, M.; Sawadsky, N.; Schapachnik, F.; Seo, H.; Shakya, K.; Song, Y.; Summers, A.; Xiao, X.; Yilmaz, Buse; Zhang, L.; Bishop, J.; Breitman, K.; Notkin, D. (2011) -
Relating Staged Computation to the Record Calculus
Aktemur, Tankut Barış; Choi, W. (Özyeğin University, 06.09.2010)It has been previously shown that there is a close relation between record calculus and program generation (e.g. Lisp-like quasiquotations): A translation has been defined to convert staged expressions to record calculus ... -
Rumadai: A plug-in to record and replay client-side events of web sites with dynamic content
Yıldız, Asım; Aktemur, Tankut Barış; Sözer, Hasan (IEEE, 2012)Reproducing user events when testing web pages is challenging because of the dynamic nature of the web content and potential dependency on third party content providers. We present Rumadai, a Visual Studio plug-in, that ... -
Seyrek matris-vektör çarpımı için koşut zamanda özelleşmi̇ş kod üreti̇mi̇ ve deneysel opti̇mi̇zasyon
Aktemur, Tankut Barış; Yıldız, Asım; Kamin, S. (IEEE, 2012)Bu çalışmada seyrek matris-vektor çarpımı için matris içeriğine göre özelleşmiş, yüksek hızlı program üretimi yapan bir kütüphane tasarımı anlatılmaktadır. Kütüphane sinyal işleme uygulamaları, bilimsel hesaplamalar, sonlu ... -
Shonan challenge for generative programming: short position paper
Aktemur, Tankut Barış; Kameyama, Y.; Kiselyov, O.; Shan, C.-C. (ACM, 2013)The appeal of generative programming is "abstraction without guilt": eliminating the vexing trade-off between writing high-level code and highly-performant code. Generative programming also promises to formally capture the ... -
Software UART: A use case for VSCPU worst-case execution time analyzer
Yıldız, A.; İskender, Deniz; Özlü, G.; Uğurdağ, Hasan Fatih; Aktemur, Tankut Barış; Gören, S. (IEEE, 2019)This paper presents our early results of the development of a Worst-Case Execution Time (WCET) analyzer for VSCPU by implementing a software UART system. Our WCET analyzer takes a C program as input and gives the time taken ... -
A sparse matrix‐vector multiplication method with low preprocessing cost
Aktemur, Tankut Barış (Wiley, 2018-11-10)Sparse matrix-vector multiplication (SpMV) is a crucial operation used for solving many engineering and scientific problems. In general, there is no single SpMV method that gives high performance for all sparse matrices. ... -
Static analysis of multi-staged programs via unstaging translation
Choi, W.; Aktemur, Tankut Barış; Yi, K.; Tatsuta, M. (ACM, 2011)Static analysis of multi-staged programs is challenging because thebasic assumption of conventional static analysis no longer holds: the program text itself is no longer a fixed static entity, but rather a dynamically ... -
Towards subtyped program generation in F#
Aktemur, Tankut Barış (ACM, 2011)Program Generation is the technique of combining code fragments to construct a program. In this work we report on our progress to extend F# with program generation constructs. Our prototype implementation uses a translation ... -
VISOR: A fast image processing pipeline with scaling and translation invariance for test oracle automation of visual output systems
Kıraç, Mustafa Furkan; Aktemur, Tankut Barış; Sözer, Hasan (The ACM Digital Library, 2018-02)A test oracle automation approach proposed for systems that produce visual output.Root causes of accuracy issues analyzed for test oracles based on image comparison.Image processing techniques employed to improve the ...
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