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IEEJ Transactions on Electronics, Information and systems 2008年第11期128卷 1610-1618+3页

作者： Nakamura, Kazutoyo Satake, Shinsuke Inai, Hiroshi Faculty of Computer Science and System Engineering Okayama Prefectural University 111 Kuboki Soja Okayama 719-1197 Japan

In a wireless LAN, since two or more terminals in a service area do the random access in a signal channel, it is necessary to achieve an efficient access that reduces the frame collision. Under the standard IEEE 802.11 protocol, each terminal sets a random backoff. Collision avoidance are being achieved while it generates useless standby time and acheives low throughput. To solve that problem, this paper proposes a channel access method which fixed backoff after success transmission. Via simulation, the proposed method reduces frame collisions and improves throughput. Furthermore, our method provides less frame loss probability and smaller file transfer delay. © 2008 The Institute of Electrical Engineers of Japan.

关键词： IEEE Standards

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Relevance feedback of content-based image retrieval using support vector machine

Relevance feedback of content-based image retrieval using su...

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2009 5th IEEE GCC Conference and Exhibition, GCC 2009

作者： Selamat, Ali Lim, Pei-Geok Department of Software Engineering Faculty of Computer Science and Information System Malaysia

ISBN: (纸本)9781424438853

The rapid growth of computer technologies and the advent of the World Wide Web have increased the amount and the complexity of multimedia information. A content-based image retrieval (CBIR) system has been developed as an efficient image retrieval tool, whereby the user can provide their query to the system to allow it to retrieve the user's desired image from the image database. However, the traditional relevance feedback of CBIR has some limitations that will decrease the performance of the CBIR system, such as the imbalance of training-set problem, classification problem, limited information from user problem, and insufficient training-set problem. Therefore, in this study, we proposed an enhanced relevance-feedback method to support the user query based on the representative image selection and weight ranking of the images retrieved. The support vector machine (SVM) has been used to support the learning process to reduce the semantic gap between the user and the CBIR system. From these experiments, the proposed learning method has enabled users to improve their search results based on the performance of CBIR system. In addition, the experiments also proved that by solving the imbalance training set issue, the performance of CBIR could be improved.

关键词： Support vector machines

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Mixed Structural Choice Operator: Enhancing Technology Mapping with Heterogeneous Representations

arXiv

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arXiv 2025年

作者： Hu, Zhang Pan, Hongyang Xia, Yinshui Wang, Lunyao Chu, Zhufei Faculty of Electrical Engineering and Computer Science Ningbo University Ningbo315211 China School of Microelectronics State Key Laboratory of Integrated Chips and System Fudan University Shanghai200433 China

—The independence of logic optimization and technology mapping poses a significant challenge in achieving high-quality synthesis results. Recent studies have improved optimization outcomes through collaborative optimization of multiple logic representations and have improved structural bias through structural choices. However, these methods still rely on technology-independent optimization and fail to truly resolve structural bias issues. This paper proposes a scalable and efficient framework based on Mixed Structural Choices (MCH). This is a novel heterogeneous mapping method that combines multiple logic representations with technology-aware optimization. MCH flexibly integrates different logic representations and stores candidates for various optimization strategies. By comprehensively evaluating the technology costs of these candidates, it enhances technology mapping and addresses structural bias issues in logic synthesis. Notably, the MCH-based lookup table (LUT) mapping algorithm set new records in the EPFL Best Results Challenge by combining the structural strengths of both And-Inverter Graph (AIG) and XOR-Majority Graph (XMG) logic representations. Additionally, MCH-based ASIC technology mapping achieves a 3.73% area and 8.94% delay reduction (balanced), 20.35% delay reduction (delay-oriented), and 21.02% area reduction (area-oriented), outperforming traditional structural choice methods. Furthermore, MCH-based logic optimization utilizes diverse structures to surpass local optima and achieve better results. Copyright © 2025, The Authors. All rights reserved.

关键词： Mapping

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HILBERT-KAMKE EQUATIONS AND GEOMETRIC DESIGNS OF DEGREE FIVE FOR CLASSICAL ORTHOGONAL POLYNOMIALS

arXiv

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arXiv 2025年

作者： Mishima, Teruyuki Lu, Xiao-Nan Sawa, Masanori Uchida, Yukihiro Accenture Japan Ltd 2-2-2 Nakanoshima Kita-ku Osaka530-0005 Japan Department of Electrical Electronics and Computer Engineering Faculty of Engineering Gifu University 1-1 Yanagido Gifu-shi Gifu501-1193 Japan Graduate School of System Informatics Kobe University 1-1 Rokkodai Nada Hyogo Kobe657-8501 Japan Department of Mathematical Sciences Graduate School of Science Tokyo Metropolitan University 1-1 Minami-Osawa Hachioji Tokyo192-0397 Japan

In this paper we elucidate the advantage of examining the connections between Hilbert-Kamke equations and geometric designs, or Chebyshev-type quadrature, for classical orthogonal polynomials. We first establish a classification theorem for such equations of degree 5 in 6 variables. The proof is based on an elementary polynomial identity, which Kawada and Wooley (1999) employed in their work on the Waring problem, and some advanced techniques on the computation of the genus of a certain irreducible curve. We then prove a necessary and sufficient condition for the existence of rational solutions of Hilbert-Kamke equations of degree 5, especially for the Chebyshev measure of the first kind. It is noteworthy that this result presents a completely explicit construction of rational solutions. Moreover, we create novel connections among Hilbert-Kamke equations, geometric designs and the Prouhet-Tarry-Escott (PTE) problem. For example, we establish that our solutions of Hilbert-Kamke equations of degree 5 in 6 variables appear in the famous parametric solution for the PTE problem found by Borwein (2002).MSC Codes 33C45, 05E99, 65D32 (Primary) 12E10, 11E76 (Secondary) Copyright © 2025, The Authors. All rights reserved.

关键词： Chebyshev polynomials

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Exploring diabetes through the lens of AI and computer vision: Methods and future prospects

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computers in Biology and Medicine 2025年 185卷 109537-109537页

作者： Chundi, Ramesh G., Sasikala Basivi, Praveen Kumar Tippana, Anitha Hulipalled, Vishwanath R. N., Prabakaran Simha, Jay B. Kim, Chang Woo Kakani, Vijay Pasupuleti, Visweswara Rao School of Computer Applications Dayananda Sagar University Bangalore India School of Computer Science and Applications REVA University Rukmini Knowledge Park Bangalore560064 India Pukyong National University Industry-University Cooperation Foundation Pukyong National University Busan48513 Korea Republic of Department of Biotechnology School of Applied Sciences REVA University Rukmini Knowledge Park Bangalore560064 India School of Computing and Information Technology REVA University Rukmini Knowledge Park Bangalore560064 India School of Computer Science and Engineering Vellore Institute of Technology Tamilnadu Vellore632014 India Abiba Systems CTO and RACE Labs REVA University Rukmini Knowledge Park Bangalore560064 India Department of Nanotechnology Engineering College of Engineering Pukyong National University Busan48513 Korea Republic of Integrated System Engineering Inha University 100 Inha-ro Nam-gu Incheon22212 Korea Republic of School of Biosciences Taylor's University Lakeside Campus Selangor Subang Jaya47500 Malaysia Faculty of Earth Sciences Universiti Malaysia Kelantan Campus Jeli Jeli Kelantan17600 Malaysia

Early diagnosis and timely initiation of treatment plans for diabetes are crucial for ensuring individuals’ well-being. Emerging technologies like artificial intelligence (AI) and computer vision are highly regarded for their ability to enhance the accessibility of large datasets for dynamic training and deliver efficient real-time intelligent technologies and predictable models. The application of AI and computer vision techniques to enhance the analysis of clinical data is referred to as eHealth solutions that employ advanced approaches to aid medical applications. This study examines several advancements and applications of machine learning, deep learning, and machine vision in global perception, with a focus on sustainability. This article discusses the significance of utilizing artificial intelligence and computer vision to detect diabetes, as it has the potential to significantly mitigate harm to human life. This paper provides several comments addressing challenges and recommendations for the use of this technology in the field of diabetes. This study explores the potential of employing Industry 4.0 technologies, including machine learning, deep learning, and computer vision robotics, as effective tools for effectively dealing with diabetes related aspects. © 2024 Elsevier Ltd

关键词： Artificial intelligence computer vision Diabetes Deep learning Machine learning

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Advancing agriculture with machine learning:a new frontier in weed management

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Frontiers of Agricultural science and engineering 2025年第02期 288-307页

作者： Mohammad MEHDIZADEH Duraid K.A.AL-TAEY Anahita OMIDI Aljanabi Hadi Yasir ABBOOD Shavan ASKAR Soxibjon TOPILDIYEV Harikumar PALLATHADKA Renas Rajab ASAAD Department of Agronomy and Plant Breeding Faculty of Agriculture and Natural Resources University of Mohaghegh Ardabili Ilam Science and Technology Park Department of Horticulture College of Agriculture University of Al-Qasim Green Department of GIS and Remote Sensing Faculty of Geography University of Tehran Medical Laboratories Techniques Department Al-Mustaqbal University College Erbil polytechnic university Technical engineering college information system engineering department Department of Fundamental Economics Tashkent State University of Economics Manipur International University Department of Computer Science Nawroz University

Weed management is a crucial aspect of modern agriculture as invasive plants can negatively impact crop yields and profitability. Long-established methods of weed control, such as manual labor and synthetic herbicides, have been widely used but come with their own set of challenges. These methods are often time-consuming, labor-intensive, and pose environmental *** have been the primary method of weed control due to their efficiency and cost-effectiveness. However, over-reliance on herbicides has led to environmental contamination, weed resistance, and potential health hazards. To address these issues, researchers and industry experts are now exploring the integration of machine learning into chemical weed management strategies. As technology advances, there is a growing interest in exploring innovative and sustainable weed management approaches. This review examines the potential of machine learning in chemical weed *** learning offers innovative and sustainable approaches by analyzing large data sets, recognizing patterns, and making accurate *** learning models can classify weed species and optimize herbicide usage. Real-time monitoring enables timely intervention, preventing invasive species spread. Integrating machine learning into chemical weed management holds promise for enhancing agricultural practices, reducing herbicide usage and minimizing environmental impact. Validation and refinement of these algorithms are needed for practical application.

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Matched design method for concatenated trellis-coded modulation

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IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS COMMUNICATIONS AND computer scienceS 1996年第11期E79A卷 1911-1917页

作者： Wadayama, T Wakasugi, K Kasahara, M Faculty of Computer Science and System Engineering Okayama Prefectural University Soja-shi 719-11 Japan Department of Electronics and Information Science Kyoto Institute of Technology Kyotoshi 606 Japan

A new design method, which is referred to as the matched design method, for concatenated trellis-coded modulation (TCM) is presented. Most of the conventional concatenated TCM employs TCM designed to maximize the minimum squared Euclidean free distance, d(free)(2). With the matched design method, we maximize d(1)(2)(t) instead of d(free)(2), where d(1)(2)(t) is the effective minimum squared Euclidean distance (MSED) when the outer code has a t-error correcting capability. The effective MSED is derived from the Euclidean/Hamming (E/H) joint weight distribution of terminated TCM. We here assume the concatenated TCM whose transmitted symbol corresponds to a symbol of outer code. The new classes of 2-dimensional(2D) and 4-dimensional(4D) codes are found by a computer search. Under the performance measures of the effective MSED or the effective multiplicity, these codes are superior to the conventional codes such as the Ungerboeck's 2D-codes when those are used as an inner code. We disclose an interesting fact that the new class of codes using rate-1/2 encoder is superior to the class of codes using rate-2/3 encoder. This fact implies that the codes using rate-1/2 encoder have two advantages: 1) better overall decoding performance and 2) less decoding complexity.

关键词： trellis-coded modulation concatenated code weight distribution

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On the energy based control for underactuated mechanical systems

On the energy based control for underactuated mechanical sys...

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ICROS-SICE International Joint Conference 2009, ICCAS-SICE 2009

作者： Xin, Xin Faculty of Computer Science and System Engineering Okayama Prefectural University Okayama Japan

ISBN: (纸本)9784907764333

The energy based control approach aiming to controlling the total energy and actuated variables of under-actuated mechanical systems has generated renewed interests in studying these systems. Successful applications of the approach to the swing-up control for the Pendubot (2-link planar robot with passive first joint), the Acrobot (2-link planar robot with passive second joint), and an n-link revolute planar robot with a passive joint robot, have been reported. This paper investigates whether the objective of controlling the energy and actuated variables to some given desired values can be achieved for any underactuated mechanical system. In this paper, we attempt to answer this question by studying the problem of swinging up the Acrobot like robot with a counterweight connected to its first link, called CWA (Counter-Weighted Acrobot). By analyzing globally the behavior of the solution of the closed-loop system consisted of the CWA and the controller designed via the energy based control approach, we show that unless the mechanical parameters of the CWA satisfying a constraint, the swing-up controller fails to achieve the goal of driving the energy to the desired value and stabilizing the actuated variable. Numerical simulation results are provided to validate the theoretical results. © 2009 SICE.

关键词： Controllers

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Redundancy of the giant swing backward movement on the high bar

Redundancy of the giant swing backward movement on the high ...

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ICCAS-SICE 2009 - ICROS-SICE International Joint Conference 2009

作者： Kanemoto, Yoshinori Yamasaki, Taiga Xin, Xin Gotoh, Kiyoshi Faculty of Computer Science and System Engineering Okayama Prefectural University Okayama Japan

ISBN: (纸本)9784907764296

Extent of redundancy in human movements under nonholonomic constraints can be an important factor to determine a resulting movement. However, the redundancy has seldom been examined concretely in previous studies concerning optimality of human movements under such constraints. This study focuses on a gymnastic movement on the high bar, called 'giant swing backward', as an almost periodic task under a second order nonholonomic constraint, and reveals a part of redundancy of the task by extending our previous study. To this end, a simple dynamical model of an expert gymnast performing the giant swing backward is constructed with parameterization of time histories of actuated joint angles by Fourier series, and is confirmed to approximately reproduce a measured movement of the gymnast. The redundancy is calculated in various parameter spaces composed of lower order Fourier coefficients. The results illustrate restricted but considerable redundancy underlying the giant swing backward. Moreover, within the set of the redundant movements, four kinds of optimization criteria are examined to explain the movement performed by the gymnast. © 2009 SICE.

关键词： Redundancy

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Effectiveness of server load estimation by using request file size for web server clusters

IEEJ Transactions on Electronics, Information and Systems

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IEEJ Transactions on Electronics, Information and systems 2008年第10期128卷 1543-1549+5页

作者： Satake, Shinsuke Inai, Hiroshi Arai, Tsuyoshi Department of Communication Engineering Faculty of Computer Science and System Engineering Okayama Prefectural University 111 Kuboki Soja-shi Okayama 719-1197 Japan

There have been proposed several dynamic load-balancing methods for web server clusters. In order to realize an effective load-balancing, they have required an almost real-time server load information which could be obtained from an observation of client-server interactions or a frequent polling from the load-balancer (dispatcher) to each server. However the observation provides an indirect server load information and the polling interval produces a time-lag. To overcome that problem, this paper proposes a load-balancing method based on a server load estimation. Under an employment of our method, the load-balancer selects an estimated least-loaded server, and then assigns the arriving request to that server. The estimation is based on a fact that the file transfer delay is proportional to the file size. The fact makes it possible to estimate each server load from the last request assigned time and the file size. From a performance comparison with the previously proposed methods, our method can realize an effective load balancing for web server clusters. © 2008 The Institute of Electrical Engineers of Japan.

关键词： Web services

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