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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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Towards safe data flow processing by integration of design by contract in deterministic UML activities

Towards safe data flow processing by integration of design b...

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2011 23rd International Symposium on Information, Communication and Automation Technologies, ICAT 2011

作者： Daw, Zamira Vetter, Marcus Boercsoek, Josef Institute of Embedded Systems Hochschule Mannheim - University of Applied Sciences Mannheim Germany Dept. of Computer Architecture and System Programming University of Kassel Kassel Germany

ISBN: (纸本)9781457707469

Data flow processing is a common task of embedded systems which is usually modeled as a pipeline. Errors in a block of this pipeline can be propagated through it thus leading to unexpected and erroneous behaviors. For safety related applications, this pipeline has to be able to identify and react to failures. The DMOSES model-driven development method uses deterministic UML activities to describe and implement data flow processing. This method ensures deterministic behavior of concurrent processing. Design by Contract defines formal, precise and verifiable interfaces for software components. We propose a development method for safe data flow processing based on the integration of this concept in deterministic UML activities. This integration allows the identification of errors by detection of contracts violation. This paper presents an extension of the DMOSES tool for contracts verification at the model level and their monitoring at runtime. © 2011 IEEE.

关键词： Pipelines

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Comodeling revisited: Execution of behavior trees in modelica

Comodeling revisited: Execution of behavior trees in modelic...

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4th International Workshop on Equation-Based Object-Oriented Modeling Languages and Tools, EOOLT 2011

作者： Myers, Toby Schamai, Wladimir Fritzson, Peter Institute of Intelligent and Integrated Systems Griffith University Australia EADS Innovation Works Germany PELAB- Programming Environment Lab Linköping University IDA Sweden

Large-scale systems increasingly consist of a mixture of co-dependent software and hardware. The differing nature of software and hardware means that they are often modeled separately and with different approaches. Comodeling is a design strategy that allows hardware/software integration issues to be identified, investigated and resolved in the early stages of development. Previous work described a comodeling approach that integrates Behavior Engineering with Modelica. This paper revisits this approach and introduces a new means of integration that natively executes Behavior Trees in Modelica rather than utilizing external functions. This enhanced integration has several benefits. Firstly, it makes comodeling easier to apply as the comodel is captured solely in Modelica. Secondly, it makes the ability to execute Behavior Trees widely available. Finally, it opens the possibility to use comodeling with other complementary approaches such as the virtual verification of system designs against system requirements.

关键词： Large scale systems

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METHODS FOR IMPROVING THE QUALITY OF CLASSIFICATION ON IMBALANCED DATA 4

METHODS FOR IMPROVING THE QUALITY OF CLASSIFICATION ON IMBAL...

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4th IEEE KhPI Week on Advanced Technology, KhPI Week 2023

作者： Gavrylenko, Svitlana Vladislav, Zozulia Khatsko, Nataliia Department of Computer Engineering and Programming National Technical University "Kharkiv Polytechnic Institute" Kharkiv Ukraine Department of Information Systems and Technologies National Technical University «Kharkiv Polytechnic Institute» Kharkiv Ukraine

ISBN: (纸本)9798350395532

The subject of the study is methods of balancing raw data. The purpose of the article is to improve the quality of intrusion detection in computer networks by using class balancing methods. Task: to investigate methods of balancing classes and to develop a classification method on imbalanced data to increase the level of network security. The methods used are: methods of artificial intelligence, machine learning. The following results were obtained: Class balancing methods based on Undersampling, Oversampling and their combinations were studied. The following methods were chosen for further research: SMOTEENN, SVMSMOTE, BorderlineSMOTE, ADASYN, SMOTE, KMeansSMOTE. The UNSW-NB 15 set was used as the source data, which contains information about the normal functioning of the network and during intrusions. A decision tree based on the CART (Classification And Regression Tree) algorithm was used as the basic classifier. According to the research results, it was found that the use of the SMOTEENN method provides an opportunity to improve the quality of detection of intrusions in the functioning of the network. Conclusions. The scientific novelty of the obtained results lies in the complex use of data balancing methods and the method of data classification based on decision trees to detect intrusions into computer networks, which made it possible to reduce the number of Type II errors. © 2023 IEEE.

关键词： Classification (of information)

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Information system model for implementation and maintenance of stochastic control over a nonlinear object on manifolds

Information system model for implementation and maintenance ...

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2020 International Conference on Information Technology in Business and Industry, ITBI 2020

作者： Kolesnikova, S.I. Institute of Computational Systems and Programming St. Petersburg State University of Aerospace Instrumentation Bolshaya Morskaia str. 67 St. Petersburg190000 Russia

The paper presents a problem statement for a robust stochastic regulator synthesis based on the principles of control on manifolds, a solution algorithm of a new information system and its structure maintaining the synthesis algorithm for a stochastic discrete object. The object under study is presented as a system of stochastic, difference nonlinear equations. The mathematical tools of the classical method of analytical design of aggregated regulators are used, which were developed earlier for a deterministic nonlinear object with a complete description. The robust stochastic nonlinear regulator ensures the following characteristics of the control system: A) minimum deviation of the output variable;b) minimum dispersion of the target invariant;c) minimum average value of the control quality functional. © Published under licence by IOP Publishing Ltd.

关键词： Nonlinear equations

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Synthesis Algorithm for a Continuous Robust Regulator on a Manifold for a Manipulator under Non-Random Noise Conditions

Synthesis Algorithm for a Continuous Robust Regulator on a M...

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2020 International Russian Automation Conference, RusAutoCon 2020

作者： Kolesnikov, A.A. Kolesnikova, S.I. Institute of Computer Technology and Information Security South Federal University Taganrog Russia Institute of Computational Systems and Programming St.Petersburg State University of Aerospae Instrumentation St. Petersburg Russia

ISBN: (纸本)9781728161303

The nonlinear adaptation algorithm is considered as applied to stabilization of the center of mass of a moving object subject to nonrandom noise in the control variable. An unknown disturbance is a bounded and continuous function of time. To solve the problem of its modeling and suppression, the following result is used: continuous functions can be described as partial solutions of some differential equations. The developed control algorithm guarantees full compensation of the external disturbance under certain conditions. The simulation result of the obtained control is applied to a manipulation object. © 2020 IEEE.

关键词： Differential equations

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Runtime Analysis of a Self-Adaptive Hard Real-Time Robotic Control System

Runtime Analysis of a Self-Adaptive Hard Real-Time Robotic C...

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IEEE Workshop on Engineering of Autonomic and Autonomous systems (EASE)

作者： Jens Steiner Matthias Hagner Institute for Programming and Reactive Systems Technical University of Braunschweig Germany

This paper describes a software architecture for parallel kinematic machines and its evolvement to a self-adaptive system striving to optimize, protect and heal itself Self-* properties are provided by self-manager components that observe and manipulate their associated system parts. A development approach for the self-managers is outlined, as is a first realization of a self-manager responsible for the control core. This self-manager distributes control components during runtime and makes feasibility decisions based on a runtime schedulability analysis

关键词： Runtime Real time systems Robot control Control systems Software architecture Digital signal processing TCPIP Kinematics Actuators Parallel robots

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A conceptual model of a computer-aided learning knowledge base 2nd

A conceptual model of a computer-aided learning knowledge ba...

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2nd International Conference on Computer Assisted Learning, ICCAL 1989

作者： Spirov, Krasimir Draganov, Mihail Centre of Engineering Pedagogics The ‘Lenin’ Higher Institute of Mechanical and Electrical Engineering Sofia1156 Bulgaria Programming and Applied Systems Department The ‘Lenin’ Higher Institute of Mechanical and Electrical Engineering Sofia1156 Bulgaria

ISBN: (纸本)9783540511427

Recent developments in the theory of artificial intelligence and the advent of the expert systems made it possible to actually produce intelligent systems for computer-aided learning (CAL). A major component of such a system is its knowledge base. The paper presents a model for a knowledge base and an approach to building it. To solve the task set, a sufficiently abstract hierarchical model has been developed of a knowledge base consisting of notions. By definition the model is recursive and subject-independent. The transition to a learning-oriented knowledge base is achieved by using a well-known model for a content-information description of the process of learning. The basic element in it is the ‘elementary cognitive structure’ (ECS), which the authors identify with the ‘notion’ element of the general conceptual model. On this basis a model has been designed of a learning-oriented knowledge base, comprising ECS. The very structure of ECSs that is to be built in the knowledge base could be different, depending on the goals, learning theories and strategies, the students' individual characteristics, etc. © Springer-Verlag Berlin Heidelberg 1989.

关键词： Expert systems

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Self-management in a control architecture for parallel kinematic robots

Self-management in a control architecture for parallel kinem...

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2008 ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, DETC 2008

作者： Maaß, Jochen Steiner, Jens Amado, Ana Michaela, Huhn Raatz, Annika Hesselbach, Jurgen Institute for Machine Tools and Production Technology Department of Mechanical Engineering TU Braunschweig 38106 Braunschweig Germany Institute for Programming and Reactive Systems Department of Computer Science TU Braunschweig 38106 Braunschweig Germany

ISBN: (纸本)9780791843253

Maintainability, extendibility and reusability of components in the design of robot control architectures is a major challenge. Parallel kinematic robots feature a wide variety of structures and applications. They are subject to easy reconfiguration because of the passive structure limbs. This class of robots requires more extensive calculations in their control laws than serial manipulators. During complex motion tasks, such as the ones required in assembly sequences, the algorithmic load may also vary over time. However, no generic control approach exists in order to reduce the complexity of control design for these kind of robots. In this paper the authors introduce an architecture for handling and assembly applications featuring self-management techniques as an approach to tackle these problems. The existing architecture features a modular and layered design. Concepts of self-management and self-optimization applied to this architecture are outlined. These properties are realized by the integration of self-managers within crucial system components. The mechanisms are extended for a future distributed version of the architecture. Real-time properties are guaranteed by an online formal analysis that verifies planned adaptations before realizing them. Copyright © 2008 by ASME.

关键词： Reusability

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Analysis of Trade-Offs Between Accuracy And Speed of Real-Time Object Detectors for the Tasks of Explosive Ordnance Detection 5

Analysis of Trade-Offs Between Accuracy And Speed of Real-Ti...

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5th IEEE KhPI Week on Advanced Technology, KhPIWeek 2024

作者： Mishchuk, Vadym Podorozhniak, Andrii Department of Computer Systems Networks and Cybersecurity National Aerospace University "Kharkiv Aviation Institute" Kharkiv Ukraine Department of Computer Engineering and Programming National Technical University "Kharkiv Polytechnic Institute" Kharkiv Ukraine

ISBN: (纸本)9798350384499

This paper investigates the performance trade-offs between accuracy and inference time in real-time object detection models, particularly for detecting landmines and unexploded ordnance (UXO). Using subsets from the COCO validation dataset, the models' performance is evaluated across various input resolutions. Object detection has seen substantial advancements over the past few decades, propelled by deep learning and enhanced computational resources. However, the balance between accuracy and inference time differs among models and configurations, requiring detailed evaluation to identify the optimal solution for specific applications like landmine and UXO detection. This balance is critical for autonomous robotic systems, where swift and accurate decision-making is imperative. ©2024 IEEE.

关键词： Landmine detection

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