Research

Big Data Analytics

Data in digital form keeps growing with the advances in Internet and Web technologies. Big Data Analytics is the the process of examining large, unconventional (structured, unstructured, semi-structured and mixed) data to find hidden patterns, unknown correlations, other useful information so that the discovered knowledge can be used by organizations, individuals, and governments to make informed decisions. Big Data research area covers a number of different research directions. Our focus is both (1) on the discovery of new methods for the processing, exploration and analysis of large datasets, and (2) on the application of known methods to the existing big data problems in order to discover, learn, and predict from data. Towards this end we use and apply methods from machine learning, data mining, statistical analysis, and recently deep learning techniques. We also utilize and extend many methods in the areas of text mining and analytics, web analytics, information extraction, graph data and analytics, and semantics. Application areas include web, semantic web, Internet of Things (IoT), financial data, and large corpus of text data.

Recent Projects

  • SPM2M: Standard M2M Software Platform. Development of a generic semantic web and big data analtyics-based IoT framework using OneM2M standards. Includes ontology-based knowledge base, rule-based anomaly detection, time-series data analysis, stream data processing, distributed data analytics (map reduce) and data visualisation with applications on smart grid data. Sponsored by TUBITAK TEYDEB program. Consultant: Erdogan Dogdu. 2015-2017.

Recent Publications

Lab

  • Big Data Analytics Lab

Faculty

Semantic Web and Linked Data

The Semantic Web is made up of technologies that will shape the future of the Web, also referred to as Web 3.0, designed to overcome the shortcomings of the current Web. The future of the Web will continue to be a Web of Documents, but at the same time will be a data network (Web of Data). This data network (Semantic Web) will be easily used by not just people, but by machines, computers and software, and the desired information will be found much faster. In the field of semantic web, we are working on the design and development of (1) ontology-based complex software systems, (2) the discovery and analysis of linked data, and (3) the semantically analysing the meaning of texts using linked data. These studies will lead to the development of question-and-answer systems, smart search engines, smart digital assistants. (translation from Turkish by Google, amazing! with some minor corrections)

Recent Projects

  • SEAS: Smart Energy Aware Systems: Increasing energy efficiency and sustainability via smart energy aware systems in building and micro-grid environments. Use case analysis, SEAS information model and ontology design, SEAS information exchange and web services platform. Consultant: Erdoğan Doğdu, Funded by EU ITEA3. 2014-2016
  • Waste Management Information System: An Expert System Using Ontologies: Funded by The Ministry of Science, Industry, and Technology Research Fund (SAN-TEZ) program. PI: Erdogan Dogdu. 2014-2015
  • Virtual Enterprise (VE): An ontology and agent-based expert information system that will capture the domain knowledge as well as SME information in detail, and help create VEs quickly and respond to market demands. Funded by The Ministry of Science, Industry, and Technology Research Fund (SAN-TEZ) program. Co-PI: Erdogan Dogdu. 2012-2014

Recent Publications

Lab

  • Big Data Analytics Lab

Faculty

Virtual Reality, Serious Games and Gamification

Virtual reality is the use of computing techniques such as 3D modeling, animation, and programming to create interactive 3D worlds in which the individuals have a sense of spatial presence. There is actually a virtual existence without real existence. Inspired by these considerations, these synthetic environments may also provide virtual existence for virtual humans and promotes multimodal interaction in immersive environments. Serious games are a special kind of games with primary goal is not entertainment. They extensively used to simulate real-world events, inform people about social responsibilities or raise individuals’ awareness, and ultimately trigger their problem-solving skills. They may provide participants not only physical but also cognitive, or emotional challenges. Gamification is the use of game elements or design techniques in non-gaming contexts. It is used, as a tool to improve motivation and promote desired behaviors.

Recent Projects

  • ET-044 Modular Game Architectures - The NATO Modeling and Simulation Group (NMSG) Exploratory Team (ET044) Sponsored by NATO. Team Member: Murat YILMAZ 2017-2018
  • DEPS:Doktora Derecesine Sahip İnsan Kaynağına Yönelik Yönetim Destek Sistemi Geliştirilmesi Projesi, Sponsored by TÜBİTAK (KAMAG), Researcher: Murat YILMAZ 2016-2017.
  • Sanal Gerçeklik Teknolojilerine yönelik Lokomosyon ve Haptik Tepki Sistemleri Geliştirme , Sponsored by Ideasis A.Ş,  granted by TÜBİTAK (1507), Consultant: Murat YILMAZ 2017-2018
  • Examining a Reward Mechanisms for Effective Usage of Application Lifecycle Management Tools, Sponsored by HAVELSAN A.Ş., applied for the grant TÜBİTAK (1505), Consultant: Murat YILMAZ 2017-2018

Thesis

  • Ulaş Güleç, Educational Game-Based Learning Framework About Laws Of The Game For Football Referees, 2015.
  • Ali AL-TAEI, Automated Classification of MMOG Players among the Participants Profiles in MOOCs, 2015.
  • Şahin Kayalı, An exploratory study to assess analytical and logical thinking skills of the software practitioners using a gamification perspective, 2015.
  • Mert Yılmaz, A Gamification approach to improve the software development process by exploring the personality types of software practitioners, 2016.
  • Ufuk, Aydan, Serious Game to Teach ISO/IEC 12207 Software Lifecycle Process: An Interactive Learning Approach, 2016.

Recent Publications

  • Aydan, U., Yilmaz, M., Clarke, P. and O’Connor, R., Teaching ISO/IEC 12207 Software Lifecycle Processes: A Serious Game Approach, accepted for publication, Computer Standards and Interfaces, 2017.
  • Gulec, U., & Yilmaz, M. (2016). A serious game for improving the decision making skills and knowledge levels of Turkish football referees according to the laws of the game. SpringerPlus, 5, 622.
  • Murat Yilmaz, Berke Atasoy, Rory V. O'Connor, Jean-Bernard Martens, Paul Clarke: Software Developer's Journey - A Story-Driven Approach to Support Software Practitioners. EuroSPI 2016: 203-211
  • Mehmet Kosa, Murat Yilmaz: Gamifying the Onboarding Process for Novice Software Practitioners. EuroSPI 2016: 242-248
  • Yilmaz, M. and O’Connor, R. V., A Scrumban Integrated Gamification Approach To Guide Software Process Improvement: A Turkish Case Study, Tehnicki Vjesnik (Technical Gazette), Vol. 23, No. 1, 2016
  • Gulec U., Yilmaz, M. (2015) Futbol Hakemleri İçin Futbol Oyun Kurallarının Eğitimi Amaçlı Oyun Tabanlı Öğrenme Çerçevesi, 9. Ulusal Yazılım Mühendisliği Konferansı (UYMS 2015), İzmir.
  • Ulaş Güleç, Murat Yilmaz and Mert Ali Gozcu. (2015) Futbol Hakemlerinin Eğitimi Amacıyla Tasarlanan Futbol Simülasyonunda Maçın Dinamizmini Sağlayan Etmenler. (UYMS 2016), Çanakkale.
  • Merve Kaymak, Mehmet Namıduru, Eray Tüzün and Murat Yılmaz.(2016) Sanal Ofis Ortamında Kod Gözden Geçirme ile Kod Değerlendirmesi. (UYMS 2016), Çanakkale.
  • Yılmaz, M., Saran, M. & O’Connor, R. (2014). Towards a Quest-Based Contextualization Process for Game-Based Learning, 8th European Conference on Games Based Learning ECGBL 2014, Berlin, Almanya.

Lab

  • Virtual Reality Laboratory

Faculty

  • Asst. Prof. Dr. Murat YILMAZ
  • Asst. Prof. Dr. Murat SARAN
  • Lecturer Faris Serdar TAŞEL
  • Specialist Ulaş GÜLEÇ

Collaborators

  • Res. Asst. Merve DENİZCİ NAZLIGÜL
  • Dr. Eray TÜZÜN

Applications of Graph Theory

Social Network Analysis

Social network analysis is the process of investigating social structures through the use of networks and graph theory. A social network is a social structure made up of a set of social actors (such as individuals or organizations) and a complex set of the dyadic ties between these actors. The social network perspective provides a clear way of analyzing the structure of whole social entities. The study of these structures uses social network analysis to identify local and global patterns, locate influential entities, and examine network dynamics. Social networks analysis is an inherently interdisciplinary academic field which emerged from social psychology, sociology, statistics, and graph theory.

Query Processing in Spatial Networks

Complex systems are very often organized under the form of networks where nodes and edges are embedded in space. Transportation and mobility networks, Internet, mobile phone networks, power grids, social and contact networks, neural networks, are all examples where space is relevant and where topology alone does not contain all the information. Characterizing and understanding the structure and the evolution of spatial networks is thus crucial for many different fields. An important consequence of space on networks is that there is a cost associated to the length of edges which in turn has dramatic effects on the topological structure of these networks. Efficient query processing on these networks play a critical role e.g., navigation in road networks.

Recent Projects

  • (Engin Demir, Researcher) Similarity-Based Indexing and Integration of Protein Sequence and Structure Databases, Ohio State University, USA. NSF - 0750891 (2009-2011)

Recent Publications

  • M.O. Ozek, E. Demir "Pixel-Based Level of Detail on Hardware Tessellated Terrain Rendering" Proc. of ACM SIGGRAPH, Los Angeles, CA, USA, 2017.
  • E. Demir, C. Aykanat. “Efficient Successor Retrieval Operations for Aggregate Query Processing on Clustered Road Networks” Information Sciences, 180(14): 2743-2762, 2010.
  • E. Demir, C. Aykanat, B. B. Cambazoglu. "A Link-Based Storage Scheme for Efficient Aggregate Query Processing On Clustered Road Networks" Information Systems 35(1): 75-93 , 2010.
  • E. Demir, C. Aykanat, B.B. Cambazoglu "Clustering Spatial Networks for Aggregate Query Processing: A Hypergraph Approach" Information Systems 33(1): 1-17, 2008.
  • Çınar, S., Genc, B., and Sever, H. (2018) Terör Örgütlerinin Etkisizleştirilmesinde Sosyal Ağ Analizinin Kullanımı, SAVTEK, 27-29 Haziran 2018, Ankara.
  • Cınar, M.S., Genc, B., Sever, H., ve Raghavan V.V. (2017) Analyzing Structure of Terrorist Networks by Using Graph Metrics, IEEE ICBK'17, 9-16, August, in Hefei, China.
  • Oruc, M., Akal, F., Sever, H. (2016) Detecting Design Patterns in OO Design Models by using a Graph Mining Approach, Proceedings of IEEE ConiSoft'16, April 27-29, Puebla, Mexico.
  • Ahmadlouei, A., Sever, H., Mengusoglu, E. (2016) Link Detection Based on Named Entity Keywords in Turkish News Corpus, In Proceedings of The Second International Conference on Big Data, Small Data, Linked Data and Open Data (ALLDATA 2016), February 21 - 25 - Lisbon, Portugal

Faculty

  • Asst. Prof. Dr. Engin DEMİR

Artificial Intelligence and Knowledge Discovery

Data Mining

Data mining is the the practice of examining large pre-existing databases in order to generate new information. The goal of the data mining process is to extract information from a data set and transform it into an understandable structure for further use. Aside from the raw analysis step, it involves database and data management aspects, data preprocessing, model and inference considerations, interestingness metrics, complexity considerations, post-processing of discovered structures, visualization, and online updating. Considering the sheer volume of data produced by both social networks and infrastructures today, manual analysis and innovation over such data without automated means is impossible.

Machine Learning

Machine learning is the science of getting computers to act without being explicitly programmed. Evolved from the study of pattern recognition and computational learning theory in artificial intelligence, machine learning explores the study and construction of algorithms that can learn from and make predictions on data– such algorithms overcome following strictly static program instructions by making data-driven predictions or decisions, through building a model from sample inputs. Machine learning is employed in a range of computing tasks where designing and programming explicit algorithms with good performance is difficult or infeasible; example applications include email filtering, detection of network intruders or malicious insiders working towards a data breach, optical character recognition (OCR), learning to rank, and computer vision.

Information Retrieval

Information retrieval (IR) is finding a material of an unstructured nature that satisfies an information need from within large collections. Indeed, IR is the science of searching for information in a document, searching for documents themselves, and also searching for metadata that describe data, and for databases of texts, images or sounds. Most popular application area is the web search engines.

Recent Projects

  • (Engin Demir, Academic Advisor) TUBITAK TEYDEB 1507 Project No: 7141177 Targeted Audience Based Digital Signage System (2015 - 2016) Bilimtek Teknoloji A.Ş., Ankara, Turkey
  • (Engin Demir, Academic Advisor) TUBITAK TEYDEB 1507 Project No: 7130694 Location Based Real Estate Database Generation using Information Retrieval and Extraction (2013-2015) NODA Bilişim Teknolojileri, Ankara, Turkey
  • (Engin Demir, Researcher) Query-driven Data Acquisition from Web-based Data Sources, Oxford University, UK. EPSRC EP/H017690/1 (2011-2012)
  • (Engin Demir, Researcher) Similarity-Based Indexing and Integration of Protein Sequence and Structure Databases, Ohio State University, USA. NSF - 0750891 (2009-2011)

Recent Publications

  • E. Demir, V. B. Demir "Predicting Flight Delays with Artificial Neural Networks: Case Study of an Airport" Proc. of 25th Signal Processing and Communications Applications Conference (SIU), Antalya, Turkey, 2017.
  • E. Demir, A. Güneş "Decision Support System for the Unification of Legal Precedents" Proc. of International Conference on Computer Science and Engineering (UBMK), Tekirdağ, Turkey, 2016.
  • B. Sriram, D.Fuhry, E. Demir, H. Ferhatosmanoglu, M. Demirbas "Short text classification in Twitter to improve information filtering" Proc. of ACM SIGIR 2010: 841-842.
  • I.S. Altingovde, E. Demir, F. Can, O. Ulusoy "Site-based dynamic pruning for query processing in search engines" Proc. of ACM SIGIR 2008: 861-862.
  • I.S. Altingovde, E. Demir, F. Can, O. Ulusoy "Incremental cluster-based retrieval using compressed cluster-skipping inverted files" ACM Transactions on Information Systems. 26(3): 1-36, 2008.
  • F. Can, I. S. Altingovde, E. Demir "Efficiency and effectiveness of query processing in cluster-based retrieval" Information Systems 29(8): 697-717, 2004.
  • E. Demir, E. Arkun "Constraint Based Update of Large Itemsets" Proc. of 16th International Symposium on Computer and Information Sciences (ISCIS XVI), Antalya, Turkey, Nov. 2001, 105-112.
  • Mertoglu, U., Sever, H., and Genc, B. (2018) Savunmada Yenilikci bir Dijital Donusum Alani: Sahte Haber Tespit Modeli, SAVTEK, 27-29 Haziran 2018, Ankara.
  • Canbay, A., Sever, H., and Sezer, E.A. (2018) Determining of discriminative blog size for authorship attribution on the Turkish texts, 6th international Symposium on Digital Forensic and Security (iSDFS), Antalya, Turkey.
  • Nasser, A., Sever, H. and Raghavan, V.V. (2017). Utilization of Rough Sets for Intrusion Detection, 17th World Congress of IFSA-SCIS'17, Otsu, Japan.
  • Nasser, A., Dincer, K., Sever, H. (2016) Investigation of Feature Selection Problem in Sentiment Analysis for Arabic Language, Proceedings of 17th International Conference on Intelligent Text Processing and Computational Linguistics, April 3-9, Konya, Turkiye.
  • Saglam, F., Genc, B., and Sever, H. (2016). Developing Turkish sentiment lexicon for sentiment analysis using online news media, 2016 IEEE/ACS 13th International Conference of Computer Systems and Applications (AICCSA), Agadir, Morocco, Nov 29 – Dec 02.
  • Canbay, P., & Sever, H. (2015, Dec). The Effect of Clustering on Data Privacy. In 14th Int. Conf. on Machine Learning and Applications (IEEE ICMLA), Miami FL, Dec 9-11 2015.

Faculty

  • Asst. Prof. Dr. Engin DEMİR

Multimedia, Video Coding and Processing

The recent developments in communication technology have resulted in relying on visual information more heavily. However, the available technologies is not sufficient to support the rapid growth in usage of high definition video. Moreover, the demand for high-definition is not expected to slow down and with the increased connectivity of humans on Earth, the available bandwidth is even further stretched despite continuous improvement in network technologies. Therefore, solutions were sought after to fit increasingly higher quality content on the current network technologies leading to compression techniques. Multimedia processing techniques try to find the optimum solutions for encoding and communicating multimedia. One of these solution is Scalable Video Coding. Scalable video coding methods however, are very sensitive to data loss or corruption which are common in wireless networks. Robust and adaptive video coding methods are being developed and used for improving the available methods in scalable video coding.

Recent Publications

  • R. Choupani, Scalable Video Coding, PhD Thesis, TU Delft, 2017
  • R. Choupani, S. Wong, M.R. Tolun, Drift-free video coding for privacy protected video scrambling (December 2015), 10th International Conference on Information, Communications and Signal Processing (ICICS 2015), 2-4 December 2015, Singapore
  • R. Choupani, S. Wong, M.R. Tolun, Using wavelet transform self-similarity for effective multiple description video (December 2015), 10th International Conference on Information, Communications and Signal Processing (ICICS 2015), 2-4 December 2015, Singapore
  • R. Choupani, S. Wong, M.R. Tolun, Hierarchical SNR Scalable Video Coding with Adaptive Quantization for Reduced Drift (March 2015), 10th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications (VISAPP 2015), 11-14 March 2015, Berlin, Germany
  • R. Choupani, S. Wong, M.R. Tolun, Spatial multiple description coding for scalable video streams (August 2014), International Journal of Digital Multimedia Broadcasting, volume 2014
  • R. Choupani, S. Wong, M.R. Tolun, Multiple Description Coding for SNR Scalable Video Transmission over Unreliable Networks (April 2014), Multimedia Tools and Applications, volume 69, issue 3
  • R. Choupani, S. Wong, M.R. Tolun, Optimized Multiple Description Coding for Temporal Video Scalability (August 2013), Chapter "Advances in Intelligent Systems and Computing", Published by Springer, Heidelberg
  • Bilge, Y.C., Kaya, F., Cinbis, N.I., Celikcan, U., Sever, H. (2017) Gelistirilmis Arka Plan Cıkarımı ile Anomali Tespiti, SIU'17, 1-4, Antalya, TR.
  • Mutlu, B., Hacıomero_lu, M., Guzel, M.S., Sever, H. Silhoutte Extraction from Street View _mages, International Journal of Advanced Robotic Systems, IJARS-D-14-00082R1, 2014.

Lab

  • Multimedia Lab

Faculty

  • Dr. Roya CHOUPANI

Digital Image Processing, Computer Vision and Pattern Recognition

Digital image processing refers to the techniques used for improving the quality, enhancing or suppressing specific visual features, and extracting information from digital images. Computer vision as the subsequent stage of processing the visual information includes object recognition, interpretation of visual data, and analyzing the extracted information. This stage which imitates the human visual system on computers performs high level processing such as recognition, tracking, and interpretation through a-priori patterns or through learning from the sample images. Image processing and computer vision covers a vast range of applications from industrial, space, gaming, medical, security or military technologies, to robotics, human-computer interaction, navigation as well as facilitating daily life.

Recent Projects

  • 2 and 3 dimensional segmentation tools for the mitochondria from electron microscope images (2013-2016)
  • Organ Segmentation in Computed Tomography images (2012-2014)
  • Video Stabilization Using Radon Transform (2011-2012)

Recent Publications

  • Tasel, S.F., Mumcuoglu, E.U., Hassanpour, R.Z., Perkins, G., “A validated active contour method driven by parabolic arc model for detection and segmentation of mitochondria”, J. Struct. Biol. 194, 253–271, 2016. doi:10.1016/j.jsb.2016.03.002
  • Tasel, S.F., Hassanpour R., Mumcuoglu E.U. et al, “Automatic detection of mitochondria from electron microscope tomography images: a curve fitting approach”, Proc. SPIE 9034, Medical Imaging 2014: Image Processing, 903449, 21 March 2014. doi:10.1117/12.2043517
  • Mumcuoglu, E.U., Hassanpour, R., Tasel, S.F., Perkins, G., Martone, M.E., Gurcan, M.N., “Computerized detection and segmentation of mitochondria on electron microscope images”, J. Microsc. 246, 248–265, 2012. doi:10.1111/j.1365-2818.2012.03614.x
  • Jafari A., Hassanpour R., Shahbahrami A., Wong S., “A Combined Spatial and Frequency Based Texture Model for Organ Segmentation in Computed Tomography Examinations”, Journal of Medical Imaging and Health Informatics, vol 4(2), pp. 230-236, 2014.
  • Babagholami-Mohamadabadi B., Bagheri-Khaligh A., Hassanpour R., “Digital Video Stabilization Using Radon Transform”, International Conference on Digital Image Computing Techniques and Applications (DICTA), pp. 1-8, 2012.

Faculty

Networking and Communication

Data communication refers to transmission of the digital data between two or more computers using cable media or wireless media. Wireless and wired communications are two main components of networking.

Computer Network

Computer network is a set of computers connected together for the purpose of sharing resources. The most common resource shared today is connection to the Internet.

Wireless Sensor Networks

The sensor networks can be used for various application areas (e.g., smart cities, homes, cars, military and health applications). For different application areas, there are different technical issues that researchers are currently resolving. Some problems in this field can be listed as mobile applications, security threats, real-time data analysis, energy efficiency, protocols, algorithms, mac and network layers and optimization.

Energy efficiency is the most important design objective in wireless sensor networks. Optimization of the network architecture for maximal energy efficiency to achieve longest possible lifetime necessitates a sound exploration of the design space.

Cloud Computing

Cloud computing is shared pools of configurable computer system resources and higher-level services that can be rapidly provisioned with minimal management effort, often over the Internet.

Recent Projects

  • Fully Accessible Network Based Cloud System and Remote Client ThinCloud Project, sponsored by Rakun Bilişim, granted by TUBITAK 1507 Kobi - Arge Program. Consultant: Sibel T. Özyer, 2017-2019.
  • Fully Automated Remote Control Life Saving Robot, sponsored by Rakun Bilişim, granted by KOSGEB Arge Innovation Program. Consultant: Sibel T. Özyer, 2018-2019.

Recent Publications

  • Al-Zaghir S, Ozyer, Sibel T., Al-Dagdoog M. "Recruitment of security features for securing VTP3 domain in Campus Environment", UBMK’17, 2nd International Conference on Computer Science and Engineering, IEEE 2017.
  • Khalaf, Abdulrahman Z., Ozyer, Sibel T. “An Energy-Efficient Clustering Based Communication Protocol with Dividing the Overall Network Area for Wireless Sensor Networks”, New York Science Journal (2014): (11):110-114.
  • Sarhan, Khalid J., Ozyer, Sibel T. “Design, Implementation and Evaluation of a Low Energy Consumption Method for Wireless Sensor Networks”, New York Science Journal, (2014): 7(11):105-109.
  • Ozyer, Sibel T., Tavli, B., Dursun, K., Koyuncu, M. "Systematic investigation of the effects of unidirectional links on the lifetime of wireless sensor networks" Computer Standards & Interfaces 36(1): (2013): 132-142.
  • Ozyer, Sibel T., Bulent Tavli, and Murat Koyuncu. “Optimal energy efficient routing in wireless sensor networks with link asymmetry”, Communications (COMM), 2012 9th International Conference on. IEEE, 2012 (Received Tubitak Event Participation Grant)
  • Ozyer, Sibel T., B. Tavli, and Murat Koyuncu. "Energy dissipation characteristics of Wireless Sensor Networks with unidirectional links." Signal Processing and Communications Applications Conference (SIU), 2012 20th. IEEE, 2012.

Labs

  • Cisco Laboratoires, Department of Computer Engineering

Faculty

  • Assoc. Prof. Reza Hassanpour
  • Dr. Sibel Tarıyan Özyer
  • Lecturer Efe Çiftci

2017

A Deep Neural-Network Based Stock Trading System Based on Evolutionary Optimized Technical Analysis Parameters
OB Sezer, M Ozbayoglu, E Dogdu
Procedia Computer Science 114, 473-480
Sentiment Analysis for the Social Media: A Case Study for Turkish General Elections
E Uysal, S Yumusak, K Oztoprak, E Dogdu
Proceedings of the SouthEast Conference, 215-218
An Artificial Neural Network-based Stock Trading System Using Technical Analysis and Big Data Framework
OB Sezer, AM Ozbayoglu, E Dogdu
Proceedings of the SouthEast Conference, 223-226
SpEnD: Linked Data SPARQL Endpoints Discovery Using Search Engines
S Yumusak, E Dogdu, H Kodaz, A Kamilaris, PY Vandenbussche
IEICE TRANSACTIONS on Information and Systems 100 (4), 758-767
The Impact of Incapacitation of Multiple Critical Sensor Nodes on Wireless Sensor Network Lifetime
HU Yildiz, B Tavli, BO Kahjogh, E Dogdu
IEEE Wireless Communications Letters
An ontology-based multi-agent virtual enterprise system (OMAVE): part 1: domain model l ing and rule management
BL Sadigh, HO Unver, S Nikghadam, E Dogdu, AM Ozbayoglu, SE Kilic
International Journal of Computer Integrated Manufacturing 30 (2-3), 320-343
An ontology-based multi-agent virtual enterprise system (OMAVE): part 2: partner selection
BL Sadigh, S Nikghadam, AM Ozbayoglu, HO Unver, E Dogdu, SE Kilic
International Journal of Computer Integrated Manufacturing, 1-21
Topic Distribution Constant Diameter Overlay Design Algorithm (TD-CD-ODA)
K Öztoprak, S Layazali, E Dogdu
Semantic Computing (ICSC), 2017 IEEE 11th International Conference on, 482-487
Parallelization of Sparsity-driven Change Detection method
A Özgür, AN Saran, F Nar
Signal Processing and Communications Applications Conference (SIU), 2017 …
Pixel-based level of detail on hardware tessellated terrain rendering
MÖ Özek, E Demir
ACM SIGGRAPH 2017 Posters, 44
Predicting flight delays with artificial neural networks: Case study of an airport
E Demir, VB Demir
Signal Processing and Communications Applications Conference (SIU), 2017 …
Proceduralization of urban models
E Demir, DG Aliaga, B Benes
Signal Processing and Communications Applications Conference (SIU), 2017 …
New knowledge in strategic management through visually mining semantic networks
G Ertek, G Tokdemir, M Sevinç, MM Tunç
Information Systems Frontiers 19 (1), 165-185
Adoption of e-government services in Turkey
M Kurfalı, A Arifoğlu, G Tokdemir, Y Paçin
Computers in Human Behavior 66, 168-178
Teaching ISO/IEC 12207 software lifecycle processes: A serious game approach
U Aydan, M Yilmaz, PM Clarke, RV O’Connor
Computer Standards & Interfaces 54, 129-138
A Systematic Investigation into the Use of Game Elements in the Context of Software Business Landscapes: A Systematic Literature Review
RVOC Serhan Olgun, Murat Yilmaz, Paul M Clarke
International Conference on Software Process Improvement and Capability …
Overcoming Public Speaking Anxiety of Software Engineers Using Virtual Reality Exposure Therapy
MD Nazligul, M Yilmaz, U Gulec, MA Gozcu, RVO Connor, PM Clarke
European Conference on Software Process Improvement
Examining Reward Mechanisms for Effective Usage of Application Lifecycle Management Tools
Ç Üsfekes, M Yilmaz, E Tuzun, PM Clarke, RVO Connor
European Conference on Software Process Improvement, 259-268
Exploring software process variation arising from differences in situational context
RT Paul M Clarke, Rory V O’Connor, David Solan, Peter Elger, Murat Yilmaz ...
European Conference on Software Process Improvement, 29-42
An examination of personality traits and how they impact on software development teams
M Yilmaz, RV O’Connor, R Colomo-Palacios, P Clarke
Information and Software Technology 86, 101-122
The Design Process of a Board Game for Exploring the Territories of the United States
M Kosa, M Yilmaz
Press Start 4 (1), 36-52
Uygulama Yaşam Döngüsü Yönetim Araçlarının Verimini Arttırmak İçin Ciddi Oyun Uygulaması.
Ç ÜSFEKES, M YILMAZ, E TÜZÜN
11th Turkish National Software Engineering Symposium (UYMS 2017)
Yazılım Yönetiminde İşe Alıştırma Süreçlerinin İyileştirilmesi İçin Düşünülmüş Bir Endüstriyel Vaka Çalışması
M Yılmaz, U Güleç, RVO Connor, P Clarke, E Tüzün
11th Turkish National Software Engineering Symposium (UYMS 2017)
An Exploratory Study to Assess Analytical and Logical Thinking Skills of the Software Practitioners using a Gamification Perspective
Ş KAYALI, M YILMAZ
Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi 21 (1), 178-189
Bireylerin Programlama Yeteneklerini ve Bilgi Seviyelerini Arttırmak Amacıyla Düşünülmüş Ciddi Oyun Tabanlı Öğrenme Çatısı - CENGO
MAG Ulas Gulec, Murat Yilmaz
Ulusal Yazılım Mühendisliği Sempozyumu (UYMS 2017)
Overcoming Public Speaking Anxiety of Software Engineers Using Virtual Reality Exposure Therapy
MD Nazligul, M Yilmaz, U Gulec, MA Gozcu, RV O’Connor, PM Clarke
European Conference on Software Process Improvement, 191-202
A Literature Survey: Is it Necessary to Develop a New Software Development Methodology for Virtual Reality Projects?
U Gulec, M Yilmaz, V Isler
Journal of Universal Computer Science 23 (8), 725-754
An industrial case study to improve the onboaring process in software management. Yazılım Yönetiminde İşe Alıştırma Süreçlerinin İyileştirilmesi İçin Düşünülmüş Bi...
M Yilmaz, U Güleç, R O'Connor, P Clarke, E Tüzün

2016

An extended IoT framework with semantics, big data, and analytics
OB Sezer, E Dogdu, M Ozbayoglu, A Onal
Big Data (Big Data), 2016 IEEE International Conference on, 1849-1856
A real-time autonomous highway accident detection model based on big data processing and computational intelligence
M Ozbayoglu, G Kucukayan, E Dogdu
Big Data (Big Data), 2016 IEEE International Conference on, 1807-1813
Identifying trolls and determining terror awareness level in social networks using a scalable framework
B Mutlu, M Mutlu, K Oztoprak, E Dogdu
Big Data (Big Data), 2016 IEEE International Conference on, 1792-1798
A survey on semantic Web and big data technologies for social network analysis
S Kulcu, E Dogdu, AM Ozbayoglu
Big Data (Big Data), 2016 IEEE International Conference on, 1768-1777
UPSP: Unique Predicate-based Source Selection for SPARQL Endpoint Federation.
EC Ozkan, M Saleem, E Dogdu, ACN Ngomo
PROFILES@ ESWC
EDL: A Framework for Entity Disambiguation and Linking to Knowledgebases
BO Kahjogh, J Karimov, E Dogdu
Semantic Computing (ICSC), 2016 IEEE Tenth International Conference on, 168-169
A scalable approach for sentiment analysis of turkish tweets and linking tweets to news
S Kulcu, E Dogdu
Semantic Computing (ICSC), 2016 IEEE Tenth International Conference on, 471-476
Opinion mining of microblog texts on Hadoop ecosystem
MA Ağca, Ş Ataç, MM Yücesan, YG Küçükayan, AM Özbayoğlu, E Doğdu
International Journal of Cloud Computing 5 (1-2), 79-90
A Hybrid Method for Rating Prediction Using Linked Data Features and Text Reviews.
S Yumusak, E Munoz, P Minervini, E Dogdu, H Kodaz
(KNOW@ LOD/CoDeS)@ ESWC
Automatic Coastline Detection Using Image Enhancement and Segmentation Algorithms.
EE Maraş, M Caniberk, HH Maraş
Polish Journal of Environmental Studies 25 (6)
Real-time 3D hand posture reconstruction using stereo vision
AC Mogol, R Hassanpour, K Oztoprak
Natural Computation, Fuzzy Systems and Knowledge Discovery (ICNC-FSKD), 2016 …
Power Aware Routing Protocols in Wireless Sensor Network
M Alsultan, K Oztoprak, R Hassanpour
IEICE Transactions on Communications 99 (7), 1481-1491
Illicit material detection using dual-energy x-ray images.
R Hassanpour
Int. Arab J. Inf. Technol. 13 (4), 409-416
A validated active contour method driven by parabolic arc model for detection and segmentation of mitochondria
SF Tasel, EU Mumcuoglu, RZ Hassanpour, G Perkins
Journal of structural biology 194 (3), 253-271
Sparsity-Driven Change Detection in Multitemporal SAR Images
NS Fatih Nar, Atilla Özgür
IEEE Geoscience and Remote Sensing Letters
Decision Support System for the Unification of Legal Precedents
E Demir, A Güneş
Proceedings of International Conference on Computer Science and Engineering …
Problems of Gaining Neuronavigation Skills on Surgical Education Programs: A case study in Turkey
NE Cagiltay, AO Borcek, G Tokdemir, HH Maras, D Topalli
E-Learn: World Conference on E-Learning in Corporate, Government, Healthcare …
Analysis of Neurooncological Data to Predict Success of Operation Through Classification
N Bagherzadi, AO Borcek, G Tokdemir, N Cagiltay, HH Maras
Proceedings of the 7th ACM International Conference on Bioinformatics …
Software Developer’s Journey
M Yilmaz, B Atasoy, RV O’Connor, JB Martens, P Clarke
European Conference on Software Process Improvement, 203-211
Gamifying the Onboarding Process for Novice Software Practitioners
M Kosa, M Yilmaz
European Conference on Software Process Improvement, 242-248
A gamification approach to improve the software development process by exploring the personality of software practitioners
M Yilmaz, M Yilmaz, RV O’Connor, P Clarke
International Conference on Software Process Improvement and Capability …
A serious game for improving the decision making skills and knowledge levels of Turkish football referees according to the laws of the game
U Gulec, M Yilmaz
SpringerPlus 5 (1), 1
Improving Social Aspects of the Software Development Process: Games, Gamification and Related Approaches J. UCS Special Issue
M Yilmaz, RV O’Connor, M Mora
Journal of Universal Computer Science 22 (12), 1487-1488
A Scrumban integrated gamification approach to guide software process improvement: a Turkish case study
M Yilmaz, RV O'Connor
Tehnicki Vjesnik (Technical Gazette) 23 (1), 237-245
A validated active contour method driven by parabolic arc model for detection and segmentation of mitochondria
SF Tasel, EU Mumcuoglu, RZ Hassanpour, G Perkins
Journal of structural biology 194 (3), 253-271
A serious game for improving the decision making skills and knowledge levels of Turkish football referees according to the laws of the game
U Gulec, M Yilmaz
SpringerPlus 5 (1), 622
Futbol Hakemlerinin Egitimi Amaciyla Tasarlanan Futbol Simulasyonunda Macin Dinamizmini Saglayan Etmenler.
U Güleç, M Yilmaz, MA Gozcu
UYMS, 284-294
Bilgisayar Muhendisligi Bitirme Projeleri icin Dusunulmus Bir Surec Yonetim Modeli.
M Yilmaz, S Tasel, U Güleç, U Sopaoglu
UYMS, 129-140

2015

Generic menu optimization for multi-profile customer systems
J Karimov, M Ozbayoglu, B Tavli, E Dogdu
Systems Engineering (ISSE), 2015 IEEE International Symposium on, 163-169
k-means Performance Improvements with Centroid Calculation Heuristics both for Serial and Parallel environments
J Karimov, M Ozbayoglu, E Dogdu
Big Data (BigData Congress), 2015 IEEE International Congress on, 444-451
Development of a smart home ontology and the implementation of a semantic sensor network simulator: An internet of things approach
OB Sezer, SZ Can, E Dogdu
Collaboration Technologies and Systems (CTS), 2015 International Conference …
Brilliant blue G assisted macular surgery: the effect of air infusion on contrast recognisability in internal limiting membrane peeling
Y Totan, E Güler, FB Gürağaç, E Uzun, E Dogdu
British Journal of Ophthalmology 99 (1), 75-80
A Two-Stage Matching Method for Multi-Component Shapes
R Hassanpour
Advances in Electrical and Computer Engineering 15 (1), 143-150
Patient safety & clinical decision support systems (CDSS): A case study in Turkey
GG Menekse, NE Cagiltay, G Tokdemir
E-Health and Bioengineering Conference (EHB), 2015, 1-4
The usability study for the personal health record systems
G Gokay, Y Ercil, G Tokdemir, N Cagiltay, YE Aykac
Medical Technologies National Conference (TIPTEKNO), 2015, 1-4
GUIs with Haptic Interfaces
MA Aydin, NE Cagiltay, E Ozcelik, E Tuner, H Sahin, G Tokdemir
International Conference on Human-Computer Interaction, 153-164
Multimodal Interaction Flow Representation for Ubiquitous Environments-MIF: A Case Study in Surgical Navigation Interface Design
G Tokdemir, G Altun, NE Cagiltay, HH Maras, AO Borcek
International Conference on Human-Computer Interaction, 797-805
Kişisel Sağlık Kaydı Sistemleri Kullanılabilirlik Durum Çalışması The usability Study for the Personal Health Record Systems
G GOKAY, Y ERCIL, G TOKDEMIR, N CAGILTAY, YE AYKAC
Vogue 15 (18)
A machine-based personality oriented team recommender for software development organizations
M Yilmaz, A Al-Taei, RV O’Connor
European Conference on Software Process Improvement, 75-86
Designing games for improving the software development process
M Kosa, M Yilmaz
European Conference on Software Process Improvement, 303-310
Kitlesel Açık Çevrimiçi Kurslardaki Katılımcı Profillerinin Yapay Sinir Agı Kullanılarak Sınıflandırılması (Classification of Participants Profiles in MOOCs Using Neural...
A Al-Taei, M Yilmaz, R O'Connor, U Halici
Exploring the Relationship between Software Process Adaptive Capability and Organisational Performance.
P Clarke, R O'Connor, B Leavy, M Yilmaz
IEEE Transactions on Software Engineering 41 (12), 1169-1183
Towards a serious game to teach ISO/IEC 12207 software lifecycle process: an interactive learning approach
U Aydan, M Yilmaz, RV O’Connor
International Conference on Software Process Improvement and Capability …
Software development roles: a multi-project empirical investigation
M Yilmaz, RV O'Connor, P Clarke
ACM SIGSOFT Software Engineering Notes 40 (1), 1-5
Exploring the belief systems of software development professionals
R O'Connor, M Yilmaz
Cybernetics and Systems: An International Journal 46 (6-7), 528-542
Understanding personality differences in software organizations using Keirsey Temperament Sorter
M Yilmaz, R O'Connor
IET Software 9 (5), 129-134
Exploration of the Design Space for Lifetime Optimization in Wireless Sensor Networks with Unidirectional Links
ST Özyer, M Koyuncu
Atılım Üniversitesi Fen Bilimleri Enstitüsü
Drift-free video coding for privacy protected video scrambling
R Choupani, S Wong, M Tolun
Information, Communications and Signal Processing (ICICS), 2015 10th …
Using wavelet transform self-similarity for effective multiple description video coding
R Choupani, S Wong, M Tolun
Information, Communications and Signal Processing (ICICS), 2015 10th …
Hierarchical SNR Scalable Video Coding with Adaptive Quantization for Reduced Drift Error.
R Choupani, S Wong, MR Tolun
VISAPP (1), 117-123
Futbol Hakemlerinin Karar Verme Yeteneklerini Geliştirmek İçin Düşünülmüş Ciddi Oyun Tabanlı Öğrenme Çatısı.
U Güleç, M Yilmaz
UYMS
Educational game-based learning framework about laws of the game for football referees
U Güleç