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arXiv 2023年

作者： Preda, Andrei-Alexandru Cercel, Dumitru-Clementin Rebedea, Traian Chiru, Costin-Gabriel Computer Science and Engineering Department Faculty of Automatic Control and Computers University Politehnica of Bucharest Bucharest060042 Romania

This paper describes the solutions submitted by the UPB team to the AuTexTification shared task, featured as part of IberLEF-2023. Our team participated in the first subtask, identifying text documents produced by large language models instead of humans. The organizers provided a bilingual dataset for this subtask, comprising English and Spanish texts covering multiple domains, such as legal texts, social media posts, and how-to articles. We experimented mostly with deep learning models based on Transformers, as well as training techniques such as multi-task learning and virtual adversarial training to obtain better results. We submitted three runs, two of which consisted of ensemble models. Our best-performing model achieved macro F1-scores of 66.63% on the English dataset and 67.10% on the Spanish dataset. © 2023, CC BY.

关键词： Deep learning

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A Framework for Anything-as-a-Service on a Cloud platform

A Framework for Anything-as-a-Service on a Cloud platform

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International Conference on System Theory, control, and Computing (ICSTCC)

作者： Adrian Alexandrescu Cătălin Mironeanu Faculty of Automatic Control and Computer Engineering Gheorghe Asachi Technical University of Iaşi Iaşi Romania

There is an increasing need for computational and storage capabilities for complex distributed applications. Existing solutions need to be deployed in an environment that allows for an increase in performance, scalability, and availability. This paper takes looks at the state-of-the-art regarding methods that take existing applications and make them more efficient by using Cloud services. The novelty of the paper consists of a proposed framework for deploying applications on three major Cloud providers (i.e., Amazon’s AWS, Google Cloud and Microsoft Azure) and on the OpenStack open-source Cloud. After the main services from the four Cloud providers are identified, different deployment methods are described depending on the Cloud services and on the requirements of the application. Also, some examples of migrations are discussed with reference to specific Cloud provider services. The proposed solution for Anythingas-a-Service (YaaS) is a straightforward framework for taking different types of applications and migrating them to the Cloud. Therefore, the deployed applications benefit from Cloud features such as resource pooling, availability or scalability, while also being wary of the incurring costs.

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Admissible modeling disturbances for the control of a road sector

Admissible modeling disturbances for the control of a road s...

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International Symposium on Applied Computational Intelligence and Informatics ( SACI)

作者： Catalin Dimon Dumitru Popescu Department of Automatic Control and Systems Engineering Faculty of Automatics and Computer Science University Politehnica of Bucharest Bucharest Romania

Usually when modeling a real process the effects of nonlinearities must be taken into account. A road traffic sector is one such process. Considering it from a macroscopic point of view, the sector is modeled both as a nonlinear and as a linearized process. An 110 model is proposed and a RST control algorithm is used to ensure the imposed performances for the closed loop system. The robustness of the system is obtained by determining the modulus margin and based upon it the admissible nonlinearities are analyzed in order to determine the limits between which the system maintains its stability.

关键词： Analytical models Robustness

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The influence of the Cole-Cole model coefficients on the parameters of the recovery voltage phenomena of paper-oil insulation

The influence of the Cole-Cole model coefficients on the par...

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International Conference on Conduction and Breakdown in Dielectric Liquids

作者： S. Wolny M. Zdanowski Faculty of Electrical Engineering Automatic Control and Computer Science Chair of Electrical Power Engineering Opole University of Technology Opole Poland

The paper presents the application of the Cole-Cole model for determining the runs of the return voltage of the paper-oil insulation sample through a computer simulation. Different insulation conditions were simulated through an adequate selection of parameters alpha and tau of the Cole-Cole model. For calculation purposes, a series-parallel substitute scheme, obtained through approximation of a discrete characteristic operator impedance Z a of the model applied, was used. The diagnostics of the simulated insulation condition was based on the analysis of a few selected parameters of the return voltage, obtained from time characteristics.

关键词： Insulation Impedance Mathematical model Approximation methods Voltage measurement Frequency measurement Computational modeling

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The Development of an ERP Application within a computer Integrated Manufacturing Laboratory

The Development of an ERP Application within a Computer Inte...

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第25届中国控制会议

作者： Dumbrava Stefan “Gh．Asachi”Technical University of lasi Faculty of Automatic Control and Computer Engineering Iasi 700050Romania

＜正＞Enterprise control applications are becoming more and more complex, exploiting distributed object technology in multi-tier architectures. For educational purposes, the development of a manufacturing control laboratory that may emphasize the new control techniques and the overall integration of the system activities with business processes is a complex and challenging task. In the paper, an educational enterprise application that integrates the ERP concept together with a Flexible Manufacturing System in a computer Integrated Laboratory is presented. It contains modularized, distributed subsystems in configurable and maintainable software, covering the business processes, from the customer order, to planned order dispatch. The software architecture contains the ERP components that are implemented using Enterprise Java Beans, deployed in a J2EE application server. It enables transactions with the business environment, shop-floor system and the database. The application is conceptually designed and analyzed using a visual model developed in Unified Modeling Language.

关键词： computer-integrated enterprises Manufacturing systems control engineering Conceptual representation Software engineering

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A Secure Real Estate Transaction Framework Based on Blockchain Technology and Dynamic Non-Fungible Tokens

A Secure Real Estate Transaction Framework Based on Blockcha...

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International Conference on System Theory, control, and Computing (ICSTCC)

作者： Delia-Elena Bărbuţă Adrian Alexandrescu Faculty of Automatic Control and Computer Engineering Gheorghe Asachi Technical University of Iaşi Iaşi Romania

ISBN: (数字)9798350364293

ISBN: (纸本)9798350364309

The real estate market, as an engine of economic growth, directly affects both financial stability and the development of communities at local and global levels. Nevertheless, it faces significant challenges, ranging from complex legislative processes and bureaucratic inefficiencies to fraud risks and high costs. Addressing these issues requires a paradigm shift to improve efficiency and transparency in this sector. The proposed solution aims to integrate emerging technologies such as blockchain and smart contracts to secure transactions and create a tamper-proof digital history. The implementation of dynamic non-fungible tokens (dNFTs) facilitates property transfers and digitally models real estate assets. A novel communication protocol and store policy are proposed for storing real estate information on the blockchain network and on decentralized storage so that the digital token representing the property can change based on external factors, e.g., change in ownership, actual updates being done on the property, or an update in valuation. The proposed framework ensures trustworthiness, transparency, traceability and security, while providing a flexible architecture with the main system components, including ways to model, update, list and buy a real estate property.

关键词： Solid modeling Costs Metaverse Biological system modeling Smart contracts Virtual reality Aerodynamics Stability analysis Nonfungible tokens Time factors

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Learning the Dynamic Environment of an Original Game Using Hierarchical Reinforcement Learning Methods

Learning the Dynamic Environment of an Original Game Using H...

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International Conference on System Theory, control, and Computing (ICSTCC)

作者： Vlad Batalan Florin Leon Faculty of Automatic Control and Computer Engineering “Gheorghe Asachi” Technical University of Iași Iași Romania

This paper compares the performance of two reinforcement learning algorithms, Q-Learning and MAXQ-0, in learning to play an original game. An extension of MAXQ-0 algorithm, MAXQ-P is introduced, which enhances the variety of the tree nodes with simple, ordered and repetitive nodes. The hierarchical approach provided by MAXQ-P finds the optimal solution faster than the flat Q-Learning approach but converges more slowly. Furthermore, the performance of the MAXQ-P algorithm decreases after a certain number of episodes due to representation error in the weights of the model. To address this issue, the model is periodically tested with an exploration value of 0, and if the model successfully finds the solution, it is stored for future use. This study provides insights into the benefits and drawbacks of using hierarchical reinforcement learning algorithms for complex tasks and highlights the importance of carefully designing and training such algorithms for optimal performance.

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The comparative study of two analytical methods for detection and elimination of the static hazard in Combinational Logic Circuits

The comparative study of two analytical methods for detectio...

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International Conference on System Theory, control, and Computing (ICSTCC)

作者： Alexandru Valachi Bogdan I. Aignătoaiei Mihai G. Timiş Automatic Control and Computer Engineering Faculty of the Technical University Gheorghe Asachi of Ia&i Iasi Romania

In this paper, the authors do a comparative study of two methods to eliminate the static hazards from logical functions. The first method consists in determining the coupled terms and getting the term that masks the static hazards, and the second method consists in determining the masking additional term by solving a system of Boolean equations. From the presented examples, the authors deduced that the 2 nd method (solving a Boolean equations system) is more advantageous because it eliminates the heuristic nature of the first method (the determination of coupled terms) and, by solving the equations system it determines all prime implicants that needs to be added to the function's expression.

关键词： Hazards Equations Logic functions Combinational circuits Noise Steady-state Companies

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Travel Planning Optimization System Employing Genetic Algorithms with Multiple Parameters

Travel Planning Optimization System Employing Genetic Algori...

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International Conference on System Theory, control, and Computing (ICSTCC)

作者： Iuliana-Elena Rusu Adrian Alexandrescu Faculty of Automatic Control and Computer Engineering Gheorghe Asachi Technical University of Iaşi Iaşi Romania

ISBN: (数字)9798350364293

ISBN: (纸本)9798350364309

Many people around the world enjoy traveling as a popular leisure activity. The process of trip planning can be time-consuming, requiring travelers to choose between various options and make decisions based on their preferences and *** paper addresses the tourist trip design problem by proposing a Travel Planning Optimization System (TPOS), which includes an architecture that employs genetic algorithms to streamline travel planning. The paper’s novelty lies in considering numerous travel factors, such as duration of visits, travel time, preferred types of locations, operating hours, destination popularity and the scheduling of places to eat in the daily program, into a single metric. This approach holds great promise in transforming travel planning by providing customized experiences that closely match the unique preferences and interests of each traveler, while using real location-related information in determining an efficient multiple-day itinerary.

关键词： Measurement Processor scheduling Roads Systems architecture control systems Scheduling Planning Optimization Genetic algorithms Meteorology

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Cloud-based Architecture for Deploying a Distributed Ambient Assisted Living Environment

Cloud-based Architecture for Deploying a Distributed Ambient...

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International Conference on System Theory, control, and Computing (ICSTCC)

作者： Nicolae Botezatu Adrian Alexandrescu Faculty of Automatic Control and Computer Engineering Gheorghe Asachi Technical University of Iaşi Iaşi Romania

Ambient Assisted Living (AAL) is starting to become the norm as more and more smart devices and sensors are installed in people’s homes. This is an important aspect in improving the quality of life, especially for the elderly and for people with *** solution presented in this paper approaches this paradigm in a large scale deployment context, as it proposes an AAL architecture on three layers (Edge, Dew, and Cloud), which is capable of handling high amount of sensor data in near realtime. Using a distributed system of rules engines, the system is able to take actions based on the acquired data. An important novel concept is the “new home deployment”, which facilitates the integration of the devices from a new installation site - the software setup of the new edge infrastructure is done by using a dedicated Cloud service. In order to showcase the practicality and efficiency of the architecture, this paper presents the intricacies of the employed services and service-interaction when deploying the solution on the OpenStack Cloud platform.

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