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International eConference on computer and Knowledge engineering (ICCKE)

作者： Mahsa Keshtkar Hooman Tahayori Department of Computer Science and Engineering & IT School of Electrical and Computer Engineering Shiraz University Shiraz Iran

ISBN: (数字)9798331511272

ISBN: (纸本)9798331511289

In recent years, significant efforts have been dedicated to detect human emotions. This interest primarily stems from the fact that emotions influence individuals' reactions and behaviors. Understanding these impacts can be beneficial in various fields, ranging from developing healthcare surveillance systems for the elderly to identifying adverse emotions in those engaged in high-stakes occupations, such as pilots, sailors, and long-haul truckers. This paper presents a solution based on the application of interval type two fuzzy sets and systems to detect individuals' emotions using their physiological signals. The physiological signals on the same emotion varies from person to person and even for the same person in different situations. This variability has led us to employ interval type-2 fuzzy sets. We defined five footprints of uncertainty for each physiological signal to cover its whole range and employed instance selection technique to optimize the rule base. We develop a rule-based fuzzy system that employs the fewest feasible number of rules for the purpose of emotion recognition. In order to enhance the comprehensibility of the system, we have also utilized a minimal set of features in the construction of the rules. This study implemented on physiological signals from the K-EmoCon dataset. Obtained results shows that the proposed method outperform other existing method with lower computational complexity.

关键词： Knowledge engineering Emotion recognition Fuzzy sets Uncertainty Surveillance Medical services Physiology Distance measurement Older adults Fuzzy systems

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Multi-level Learning for Semi-supervised Multi-view Classification 11

Multi-level Learning for Semi-supervised Multi-view Classifi...

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11th International Conference on Advanced Cloud and Big Data, CBD 2023

作者： Song, Na Yang, Shundong Cai, Zhiling Lin, Jian Huang, Sujia Putian University School of Mechanical Electrical and Information Engineering Putian China Hainan University School of Computer Science and Technology Haikou China Fujian Agriculture and Forestry University College of Computer and Information Science Fuzhou China Fuzhou University College of Computer and Data Science Fuzhou China

ISBN: (纸本)9798350345346

Multi-view semi-supervised classification primarily aims to enhance classification accuracy when dealing with limited labeled samples. Although existing methods have shown impressive performance, significant challenges still persist in efficiently propagating label information and capturing global relationship information within multi-view data. To address the aforementioned challenges, a Graph Convolutional Network (GCN)-based framework is presented, which explores the acquisition of multilevel representations, encompassing feature-level representations and the fusion of global structural associations. The state-of-the-art performance of the proposed model is unequivocally supported by a comprehensive set of empirical results. © 2023 IEEE.

关键词： computer vision

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Two-Stage Piezoelectric Resonator / Switched Capacitor DC-DC Converter

Two-Stage Piezoelectric Resonator / Switched Capacitor DC-DC...

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2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023

作者： Wanyeki, Babuabel M. Boles, Jessica D. Lang, Jeffery H. Perreault, David J. Meta Platforms Inc New York CityNY United States University of California Berkeley Electrical Engineering and Computer Sciences BerkeleyCA United States Massachusetts Institute of Technology Electrical Engineering and Computer Science CambridgeMA United States

ISBN: (纸本)9798350316445

Magnetics pose a significant challenge for power converter miniaturization. Approaches to address this include power converters based on piezoelectric resonators (PRs) rather than magnetics, and switched-capacitor (SC) converters which utilize only capacitors. However, PR-based converter efficiencies tend to decrease at high voltage conversion ratios, and purely SC-based converters are not capable of efficiently regulating voltage. Through the hybridization of PR and SC-based converters, there is an opportunity for each to address the drawbacks of the other to create a high power density, high efficiency power converter for applications requiring high voltage conversion ratios and wide, continuous voltage conversion ranges. In this paper, we propose a two-stage dc-dc converter with a PR-based regulation stage and a SC-based transformation stage. We detail a new simplified eight-stage switching sequence for the PR stage and experimentally validate this concept in a prototype converter. © 2023 IEEE.

关键词： dc-dc power converters piezoelectric resonators switched capacitor converters switching sequences

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Impact of Parametric Uncertainties on the Steady-State Performances of DFIG-Based WECS 10th

Impact of Parametric Uncertainties on the Steady-State Perfo...

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10th EAI International Conference on Advancements of science and Technology, EAI ICAST 2022

作者： Ayenew, Endalew Biru, Getachew Mulatu, Asrat Berhanu, Milkias Electrical Power and Control Engineering School of Electrical Engineering and Computing Adama Science and Technology University Adama Ethiopia School of Electrical and Computer Engineering Addis Ababa Institute of Technology Addis Ababa University Addis Ababa Ethiopia Center of Excellence for Sustainable Energy College of Electrical and Mechanical Engineering Addis Ababa Science and Technology University Addis Ababa Ethiopia

ISBN: (纸本)9783031411724

This chapter presents the study carried out to discover uncertain parameters in a model of a doubly-fed induction generator (DFIG)-based wind energy conversion system (WECS) and to investigate their effects on WECS plant while harvesting energy from wind at varying speeds. This is carried out by analytically formulating the steady-state models of a DFIG-based WECS and computing the parameters of these models at different wind speeds that drive wind turbines at rotor speed from sub-synchronous to super-synchronous. The main uncertain parameters in this system are the mutual reactances between stator and rotor windings, and the reactance of rotor winding. These variations happen due to the varying wind speed. The effect of parametric uncertainties on the steady-state performances of DFIG-based WECS is examined. The results depicted that the steady-state performances of DFIG-based WECS are influenced by uncertain phenomena. Typically a 0.5% change in mutual reactances caused up to 10 kW change in the generator output power. Mainly, it causes instability in the performances of the DFIG-based WECS and slightly reduces overall efficiency at a higher value of the wind speed. © 2024, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： DFIG-based WECS HAWT Performances of WECS Uncertain parameter

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Building the metaverse using digital twins at all scales,states,and relations

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Virtual Reality & Intelligent Hardware 2022年第6期4卷 459-470页

作者： Zhihan LV Shuxuan XIE Yuxi LI M.Shamim HOSSAIN Abdulmotaleb El SADDIK Department of Game Design Faculty of ArtsUppsala UniversitySweden College of Computer Science and Technology Qingdao UniversityQingdaoChina Department of Software Engineering College of Computer and Information SciencesKing Saud UniversityRiyadhSaudi Arabia School of Electrical Engineering and Computer Science(EECS) University of OttawaOttawaOntarioCanada

Developments in new-generation information technology have enabled Digital Twins to reshape the physical world into a virtual digital space and provide technical support for constructing the *** objects can be at the micro-,meso-,or *** Metaverse is a complex collection of solid,liquid,gaseous,plasma,and other uncertain ***,the Metaverse integrates tangibles with social relations,such as interpersonal(friends,partners,and family)and social relations(ethics,morality,and law).This review introduces some principles and laws,such as broken windows theory,small-world phenomenon,survivor bias,and herd behavior,for constructing a Digital Twins model for social ***,from multiple perspectives,this article reviews mappings of tangible and intangible real-world objects to the Metaverse using the Digital Twins model.

关键词： Digital twins Metaverse Sensor

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A Robust Security Method for Medical Image Based on 2D Schaffer Map 4

A Robust Security Method for Medical Image Based on 2D Schaf...

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4th IEEE International Conference on electrical, computer, and Energy Technologies, ICECET 2024

作者： Sharma, Suvita Rani Kaur, Manpreet Singh, Birmohan Minocha, Sachin Sant Longowal Institute of Engineering and Technology Department of Computer Science and Engineering Sangrur Punjab Longowal148106 India Bennett University SCSET Greater Noida India Sant Longowal Institute of Engineering and Technology Department of Electrical and Instrumentation Engineering Sangrur Punjab Longowal148106 India School of Computer Science Engineering and Technology Bennett University Greater Noida India

ISBN: (纸本)9798350395914

In this work, a methodology has been propounded for the security of the medical images containing Confusion and Diffusion phases in which a 2D Schaffer map is utilized. The confusion phase rearranges the row and column of medical images using the sorted indexes of the chaotic sequences produced by the Schaffer map. During the diffusion phase, the chaotic sequences are utilized to alter the pixel values of the original image through the XOR operation. This phase applies to both the row and column pixel values of the images, enhancing security. The efficacy of the proposed security method has been assessed through histogram analysis, chi-square, and variance test, revealing uniformity in encrypted image pixel values. The correlation analysis shows results closer to zero and an entropy value nearly equal to the ideal 8. Moreover, the encrypted image exhibits lower Peak Signal-to-Noise Ratio (PSNR) and higher Mean Square Error (MSE) values, indicating structural dissimilarity with the original image. The Unified Averaged Changed Intensity (UACI) value exceeds 33.40% and the Number of Changing Pixel Rate (NPCR) value exceeds 99.60%, indicating resistance against differential attacks, while the Structural Similarity Measure (SSIM) values closer to zero for the encrypted image indicates structural dissimilarity. The results affirm that the propounded methodology is secure from entropy, differential, statistical, and brute force attacks. © 2024 IEEE.

关键词： Image enhancement

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Extending LLMs to New Languages: A Case Study of Llama and Persian Adaptation 31

Extending LLMs to New Languages: A Case Study of Llama and P...

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31st International Conference on Computational Linguistics, COLING 2025

作者： Sani, Samin Mahdizadeh Sadeghi, Pouya Vu, Thuy-Trang Yaghoobzadeh, Yadollah Haffari, Gholamreza Department of Electrical and Computer Engineering University of Tehran Iran Tehran Institute for Advanced Studies Khatam University Iran Department of Data Science & AI Monash University Australia

ISBN: (纸本)9798891761964

Large language models (LLMs) have made great progress in classification and text generation tasks. However, they are mainly trained on English data and often struggle with low-resource languages. In this study, we explore adding a new language, i.e., Persian, to Llama (a model with a limited understanding of Persian) using parameter-efficient fine-tuning. We employ a multi-stage approach involving pretraining on monolingual Persian data, aligning representations through bilingual pretraining and instruction datasets, and instruction-tuning with task-specific datasets. We evaluate the model's performance at each stage on generation and classification tasks. Our findings suggest that incorporating the Persian language, through bilingual data alignment, can enhance classification accuracy for Persian tasks, with no adverse impact and sometimes even improvements on English tasks. Additionally, the results highlight the model's initial strength as a critical factor when working with limited training data, with cross-lingual alignment offering minimal benefits for the low-resource language. Knowledge transfer from English to Persian has a marginal effect, primarily benefiting simple classification tasks. © 2025 Association for Computational Linguistics.

关键词： Computational linguistics

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Enhancing Lung Cancer Diagnosis with Machine Learning Methods and Systematic Review Synthesis 8

Enhancing Lung Cancer Diagnosis with Machine Learning Method...

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8th International Conference on electrical, Electronics and Information engineering, ICEEIE 2023

作者： Khan, Razib Hayat Miah, Jonayet Nipun, Shah Ashisul Abed Islam, Majharul Amin, Md Shahedul Taluckder, Md Siam Independent University Bangladesh Department of Computer Science and Engineering Dhaka Bangladesh University of South Dakota Department of Computer Science SD United States North South University Department of Electrical and Computer Engineering Dhaka Bangladesh University of Tennessee Chattanooga Department Finance & Economics United States Lamar University Phillip M. Drayer Department of Electrical Engineering United States

ISBN: (纸本)9798350340501

Lung cancer is the leading cause of death in the USA It is caused for various reasons, such as malignant tumors that grow spontaneously in the lung and spread to other parts of the body, where they can be devastating. Other than that, there are so many external reasons why smoking is the primary factor that gradually creates lung problems that lead to lung cancer. However, we can prevent this deadly cancer by detecting it at an early stage. A machine learning-based detection model has the potential to detect lung cancer, which helps to predict the early stage of cancer. So, we aim to build some powerful machine learning algorithms to predict this cancer that can help physicians make decisions about the diagnosis process of a particular patient, whether the patient needs a high or a regular diagnosis level. This can reduce the treatment cost of a patient because the physician knows from the result how many doses are needed for a patient, so it can avoid unnecessary treatment, which saves money and brings an efficient diagnosis system. We aimed to build a sustainable model that could predict the disease accurately, and finally, our models, such as XGBoost, achieved the highest value of other models. According to the accuracy level, XGBoost performed up to 95.92%, LightGBM, AdaBoost, Logistic Regression, and Support vector machine achieved 91.50%, 93.32%, 57.41 %, and 89.32% accuracy, respectively. © 2023 IEEE.

关键词： Diagnosis

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Feature Correlation Aggregation: on the Path to Better Graph Neural Networks

Feature Correlation Aggregation: on the Path to Better Graph...

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2023 International Conference on Digital Image Computing: Techniques and Applications, DICTA 2023

作者： Zhou, Jieming Zhang, Tong Fang, Pengfei Petersson, Lars Harandi, Mehrtash Australian National University College of Engineering and Computer Science Canberra Australia Image and Visual Representation Laboratory Epfl Lausanne Switzerland Imaging and Computer Vision Group Csiro Canberra Australia Monash University Department of Electrical and Computer Systems Engineering Melbourne Australia

ISBN: (纸本)9798350382204

Prior to the introduction of Graph Neural Networks (GNNs), modelling and analyzing irregular data, particularly graphs, was thought to be the Achilles' heel of deep learning. The core concept of GNNs is to find a representation by recursively aggregating the representations of a central node and those of its neighbor, and many GNNs' designs have demonstrated its success. However, most only focus on using the first-order information between a node and its neighbors. In this paper, we introduce a central node permutation variant function through a frustratingly simple and innocent-looking modification to the core operation of a GNN, namely the Feature cOrrelation aGgregation (FOG) module, which learns the second-order information from feature correlation between a node and its neighbors in the pipeline. By adding FOG into existing variants of GNNs, we empirically verify this second-order information complements the features generated by original GNNs across a broad set of benchmarks. A tangible boost in the model's performance is observed where the model surpasses previous state-of-the-art results by a significant margin while employing fewer parameters. e.g., 26.202% improvement on a real-world molecular dataset using graph convolutional networks. © 2023 IEEE.

关键词： Graph neural networks

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Common-Mode Drift Resilient Ring-Oscillator-Based Time-Domain Filter for Next-Generation Wireless 66

Common-Mode Drift Resilient Ring-Oscillator-Based Time-Domai...

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2023 IEEE 66th International Midwest Symposium on Circuits and Systems, MWSCAS 2023

作者： Xu, Qiuyan Lin, Chung-Ching Hut, Huan Gupta, Subhanshu School of Electrical Engineering and Computer Science Washington State University Pullman United States School of Microelectronics Southern University of Science and Technology China

ISBN: (纸本)9798350302103

Time-domain filters with single- and differential-ended architectures are technologically scalable and cost-efficient suited for next-generation wireless transmitters. Differential time-domain filters provide better linearity but are limited by common-mode drifts and other second-order effects. This paper provides detailed analysis of single- and differential-ended time-domain filter architecture for wireless transmitters with a solution to alleviate common-mode drift and achieve high linearity. © 2023 IEEE.

关键词： common-mode drift pseudo-differential time domain filter Voltage-controlled ring oscillator

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