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International Symposium on Digital Forensic and Security (ISDFS)

作者： Bahaddin Erdem Murat Karabatak Department of Computer Programming Bitlis Eren University Bitlis Turkey Department of Software Engineering Firat University Elaziğ Turkey

ISBN: (数字)9798331509934

ISBN: (纸本)9798331509941

This study aims to reveal the best deep learning models that are improved and optimized by predicting undesirable behavior patterns using a dataset consisting of artificial and real exam data of students taking online distance education courses in an online environment through the distance education system. Using online exam data of 129 students, the researchers conducted analysis with two different scenarios to determine the best prediction performance through regression and classification models. The model we proposed was determined as a four-layer DNN with 80.4% test performance in detecting students who “cheated” from undesirable behavior patterns, which was performed with K-10, K-5 and K-3 cross-validation. The results prove that students' online distance education exam data can be easily applied to the DNN model. The models presented in the study provide a roadmap for educational institutions to evaluate their online examination practices and develop more effective strategies for academic honesty.

关键词： Deep learning Analytical models Digital forensics Predictive models Nonhomogeneous media Data models Educational courses Fraud Security

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Prediction and graph visualization of cyber attacks using graph attention networks

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computers & Security 2025年 157卷

作者： Mucahit Soylu Resul Das Inonu University Department of Organized Industrial Zone Vocational School Computer Programming Malatya Turkiye Firat University Faculty of Technology Department of Software Engineering 23119 Elazig Turkiye

This study proposes a hybrid approach for visualizing cyberattacks by combining the deep learning-based GAT model with JavaScript-based graph visualization tools. The model processes large, heterogeneous data from the UNSW-NB15 dataset to generate dynamic and meaningful graphs. In the data cleaning phase, missing and erroneous data were removed, unnecessary columns were discarded, and the data was transformed into a format suitable for modeling. Then, the data was converted into homogeneous graphs, and heterogeneous structures were created for analysis using the GAT model. GAT prioritizes relationships between nodes in the graph with an attention mechanism, effectively detecting attack patterns. The analyzed data was then converted into interactive graphs using tools like SigmaJS, with attacks between the same nodes grouped to reduce graph complexity. Users can explore these dynamic graphs in detail, examine attack types, and track events over time. This approach significantly benefits cybersecurity professionals, allowing them to better understand, track, and develop defense strategies against cyberattacks.

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A modeling framework for the development of provably secure E-commerce applications

A modeling framework for the development of provably secure ...

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2nd International Conference on software engineering Advances - ICSEA 2007

作者： Moebius, Nina Haneberg, Dominik Reif, Wolfgang Schellhorn, Gerhard Institute of Computer Science University Augsburg Department of Software Engineering and Programming Languages 86135 Augsburg Germany

ISBN: (纸本)0769529372

Developing security-critical applications is very difficult and the past has shown that many applications turned out to be erroneous after years of usage. For this reason it is desirable to have a sound methodology for developing security-critical E-Commerce applications. We present an approach to model these applications with the unified modeling language (UML) [1] extended by a UML profile to tailor our models to security applications. Our intent is to (semi-) automatically generate a formal specification suitable for verification as well as an implementation from the model. Therefore we offer a development method seamlessly integrating semi-formal and formal methods as well as the implementation. This is a significant advantage compared to other approaches not dealing with all aspects from abstract models down to code. Based on this approach we can prove security properties on the abstract protocol level as well as the correctness of the protocol implementation in Java with respect to the formal model using the refinement approach. In this paper we concentrate on the modeling with UML and some details regarding the transformation of this model into the formal specification. We illustrate our approach on an electronic payment system called Mondex [10]. Mondex has become famous for being the target of the first ITSEC evaluation of the highest level E6 which requires formal specification and verification. © 2007 IEEE.

关键词： Unified Modeling Language

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Boolean differential calculus

Boolean differential calculus

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作者： Steinbach, Bernd Posthoff, Christian Department of Computer Science Software Engineering and Programming Freiberg University of Mining and Technology Germany

ISBN: (纸本)9781608451821

Boolean Differential Calculus (BDC) extends Boolean *** Boolean algebra is focused on values of logic functions,BDC allows the evaluation of changes of the function values. Such changes can be investigated between certain pairs of function values as well as regarding whole subspaces. Due to the same basic data structures, BDC can be applied to any task described by logic functions and equations together with the Boolean *** used is BDC in analysis, synthesis, and testing of digital circuits. In this chapter, we introduce basic definitions of BDC together with some typical applications.

关键词： Differentiation (calculus)

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Cross-language code analysis and refactoring

Cross-language code analysis and refactoring

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2012 IEEE 12th International Working Conference on Source Code Analysis and Manipulation, SCAM 2012

作者： Mayer, Philip Schroeder, Andreas Department of Programming and Software Engineering Institute for Computer Science Ludwig-Maximilians-Universität München Germany

ISBN: (纸本)9780769547831

software composed of artifacts written in multiple (programming) languages is pervasive in today's enterprise, desktop, and mobile applications. Since they form one system, artifacts from different languages reference one another, thus creating what we call semantic cross-language links. By their very nature, such links are out of scope of the individual programming language, they are ignored by most language-specific tools and are often only established - and checked for errors - at runtime. This is unfortunate since it requires additional testing, leads to brittle code, and lessens maintainability. In this paper, we advocate a generic approach to understanding, analyzing and refactoring cross-language code by explicitly specifying and exploiting semantic links with the aim of giving developers the same amount of control over and confidence in multi-language programs they have for single-language code today. © 2012 IEEE.

关键词： Semantics

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Spam detection with fasttext based features

Spam detection with fasttext based features

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2024 Innovations in Intelligent Systems and Applications Conference, ASYU 2024

作者： Karadeniz, Talha Tokdemir, Gül Maraş, H. Hakan Department of Software Engineering Çankaya University Ankara Turkey Department of Computer Engineering Çankaya University Ankara Turkey Department of Computer Programming Çankaya University Ankara Turkey

ISBN: (纸本)9798350379433

Fasttext is a powerful word representation method that creates word representations based on vectors of character n-grams. In this work, we propose a method that utilizes fasttext features for a novel feature engineering model for the spam detection problem. In the feature engineering method, the combination of average, mean of second derivative;mean peak and standard deviation of fasttext features are computed. Finally, tf-idf features are also considered for the modeling process. The success of each feature engineering technique is measured and reported. The combination of the five feature extraction methods, tested on two spam detection datasets, yielded promising results with an accuracy of 0.978 on e-mail spam detection and an accuracy of 0.986 on sms spam classification. © 2024 IEEE.

关键词： Support vector machines

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WIP: An Engaging Undergraduate Intro to Model Checking in software engineering Using TLA+ 54

WIP: An Engaging Undergraduate Intro to Model Checking in So...

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54th IEEE Frontiers in Education Conference, FIE 2024

作者： Läufer, Konstantin Mertin, Gunda Thiruvathukal, George K. Loyola University Software and Systems Laboratory Department of Computer Science Chicago United States Institute for Software Engineering and Programming Languages University of Lübeck Germany

ISBN: (纸本)9798350351507

Background: In this Innovative Practice Work in Progress, we present our initial efforts to integrate formal methods, with a focus on model-checking specifications written in Temporal Logic of Actions (TLA+), into computer science education, targeting undergraduate juniors/seniors and graduate students. Many safety-critical systems and services crucially depend on correct and reliable behavior. Formal methods can play a key role in ensuring correct and safe system behavior, yet remain underutilized in educational and industry contexts. Aims: We aim to (1) qualitatively assess the state of formal methods in computer science programs, (2) construct level-appropriate examples that could be included midway into one's undergraduate studies, (3) demonstrate how to address successive 'failuresy' through progressively stringent safety and liveness requirements, and (4) establish an ongoing framework for assessing interest and relevance among students. Methods: We detail our pedagogical strategy for embedding TLA+ into an intermediate course on formal methods at our institution. After starting with a refresher on mathematical logic, students specify the rules of simple puzzles in TLA+ and use its included model checker (known as TLC) to find a solution. We gradually escalate to more complex, dynamic, event-driven systems, such as the control logic of a microwave oven, where students will study safety and liveness requirements. We subsequently discuss explicit concurrency, along with thread safety and deadlock avoidance, by modeling bounded counters and buffers. Results: Our initial findings suggest that through careful curricular design and choice of examples and tools, it is possible to inspire and cultivate a new generation of software engineers proficient in formal methods. Conclusions: Our initial efforts suggest that 84% of our students had a positive experience in our formal methods course. Our future plans include a longitudinal analysis within our own institution and

关键词： Students

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Optimistic Versioning for Conflict-tolerant Collaborative Blended Modeling 10

Optimistic Versioning for Conflict-tolerant Collaborative Bl...

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STAF 2022 Workshop: 10th International Workshop on Bidirectional Transformations, BX 2022, 2nd International Workshop on Foundations and Practice of Visual Modeling, FPVM 2022 and 2nd International Workshop on MDE for Smart IoT Systems, MeSS 2022

作者： Exelmans, Joeri Pietron, Jakob Raschke, Alexander Vangheluwe, Hans Tichy, Matthias Department of Computer Science University of Antwerp - Flanders Make Antwerp Belgium Institute of Software Engineering and Programming Languages Ulm University Ulm Germany

Optimistic versioning is a key component in supporting collaborative workflows. Text-based versioning has been widely adopted for versioning code, but in model-driven engineering, dealing with visual concrete syntaxes, new methods are required. In the case of blended modeling, a mixture of both textual and visual syntaxes, concurrently editable and synchronizable, introduces additional challenges. We propose a type of operation-based versioning to record not only user edits, but also bi-directional change propagations between concrete and abstract syntax. This way we can support blended modeling with layout continuity, and flexible handling of missing information (e. g., layout information) when rendering changes from abstract to concrete syntax. In addition, the proposed versioning approach enables collaborative conflict resolution by allowing partial conflict resolution, thus deferring a final resolution. © 2022 Copyright for this paper by its authors. Use permitted under Creative Commons License Attribution 4.0 International (CC BY 4.0).

关键词： Abstracting

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Evaluating Length of a Shortest Adaptive Homing Sequence for Weakly Initialized FSMs

Evaluating Length of a Shortest Adaptive Homing Sequence for...

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2020 IEEE East-West Design and Test Symposium, EWDTS 2020

作者： Vinarskii, Evgenii Yevtushenko, Nina Lomonosov Moscow State University Department of Computer Science Moscow Russia Ivannikov Institute for System Programming of Ras Software Engineering Deparment Moscow Russia

ISBN: (数字)9781728198996

ISBN: (纸本)9781728198996

There are many research papers devoted to the state identification problem of finite state machines (FSMs) which are widely used for analysis of discrete event systems. A deterministic complete reduced FSM always has a homing sequence (HS) but a number of non-deterministic FSMs not necessarily have a preset HS;nevertheless, those FSMs can still have an adaptive HS. Moreover, adaptive HS can be shorter than the preset. If each state can be an initial state of a complete FSM, i.e., an FSM is non-initialized, then a shortest adaptive HS (if it exists) has polynomial length in the number of FSM states. We show that it is not the case for weakly-initialized FSMs: such FSMs can have a shortest adaptive HS of exponential length in the number of FSM states/transitions. However, the experimental evaluation shows that the non-polynomial upper bound for a shortest adaptive HS was never reached for randomly generated weakly-initialized two-input FSMs. © 2020 IEEE.

关键词： Adaptive homing sequence Non-deterministic FSM weakly initialized FSM

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Integrated smart home services and smart wearable technology for the disabled and elderly 4

Integrated smart home services and smart wearable technology...

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4th International Conference on Data Management Technologies and Applications, DATA 2015

作者： Tuna, Ayse Das, Resul Tuna, Gurkan School of Foreign Languages Trakya University Edirne Turkey Department of Software Engineering Firat University Elazig Turkey Department of Computer Programming Trakya University Edirne Turkey

ISBN: (纸本)9789897581038

Smart Home is indeed a broad concept which includes the techniques and systems applied to living spaces. While its main goal is to reduce the consumption of energy, it provides many benefits including living in comfort, security and increasing flexibility. Smart homes are achieved through networking, control and automation technologies. Since smart homes offer more comfort and security and provide novel innovative services, people with disabilities or the elderly can take the advantages and improve their life quality. However, for such novel services, an analytical infrastructure which can manage overall data flow provided by various sensors, understand anomalous behaviour, and make necessary decisions. In this study, for efficient data handling and visualisation, an integrated smart service approach based on the use of a smart vest is proposed. The smart vest plays a key role in the proposed system since it provides the main health parameters of the monitored person to the smart home service and enables tracking of the monitored person's location. The proposed system offers many benefits to both people with disabilities and the elderly and their families in terms of increased efficiency of health care service and comfort for the monitored person. It can also reduce the cost of health care services by reducing the number of periodical visits.

关键词： Wearable technology

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