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THE DUODIRUN MERGING ALGORITHM - A NEW FAST ALGORITHM FOR PARALLEL MERGING

INFORMATION PROCESSING LETTERS 1983年第3期17卷 167-168页

作者： ZHENG, ZJ Department of Computer Architecture Institute of Computing Technology Academia Sinica Beijing The People's Republic of China

Batcher (1968) has presented some parallel merging algorithms. A new direct algorithm different from Batcher's, but with more global optimal properties in the simplicity, regularity, symmetry, and generality, is presented. A theorem is presented stating that for every general algorithm for merging, if it merges all elements of duodirun(N), then it will merge the array cascaded by 2 sorted arrays. The theorem is easily confirmed by the zero-one principle. According to the theorem, the DuoDirun Merging Algorithm (DDMA) can be composed. The purpose of DDMA is to transform arrays in the duodirun structure.

关键词： Parallel merging run duodirun symmetry regularity sorting

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Ambient living activity recognition based on feature-set ranking using intelligent systems

Ambient living activity recognition based on feature-set ran...

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2010 6th IEEE World Congress on Computational Intelligence, WCCI 2010 - 2010 International Joint Conference on Neural Networks, IJCNN 2010

作者： Baños, Oresti Pomares, Héctor Rojas, Ignacio Department of Computer Architecture and Computer Technology University of Granada Granada 18071 Spain

ISBN: (纸本)9781424469178

E-health and e-monitoring have become an increasingly important area during recent years, being the recognition of motion, postures and physical exercises one of the main topics. In this kind of problem is common to work with a huge training data set in a multidimensional space, so feature selection is absolutely necessary. Most works are based on knowledge extraction using features which permit to make decisions about the activity realized, being feature selection the most critical stage. Conventional feature selection procedures based on wrapper methods or 'branch and bound' are highly computationally expensive. In this work, we propose an alternative filter method using a feature-set ranking via a couple of two statistical criteria, which achieves remarkable accuracy rates in the classification process. We demonstrate the usefulness of our method on both laboratory and seminaturalistic activity ambient living datasets for real problems. © 2010 IEEE.

关键词： Feature Selection

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An adaptive, non-uniform cache structure for wire-delay dominated on-chip caches

An adaptive, non-uniform cache structure for wire-delay domi...

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作者： Kim, Changkyu Burger, Doug Keckler, Stephen W. Computer Architecture and Technology Laboratory Department of Computer Sciences University of Texas Austin

Growing wire delays will force substantive changes in the designs of large caches. Traditional cache architectures assume that each level in the cache hierarchy has a single, uniform access time. Increases in on-chip communication delays will make the hit time of large on-chip caches a function of a line's physical location within the cache. Consequently, cache access times will become a continuum of latencies rather than a single discrete latency. This nonuniformity can be exploited to provide faster access to cache lines in the portions of the cache that reside closer to the processor. In this paper, we evaluate a series of cache designs that provides fast hits to multi-megabyte cache memories. We first propose physical designs for these Non-Uniform Cache architectures (NUCAs). We extend these physical designs with logical policies that allow important data to migrate toward the processor within the same level of the cache. We show that, for multi-megabyte level-two caches, an adaptive, dynamic NUCA design achieves 1.5 times the IPC of a Uniform Cache architecture of any size, outperforms the best static NUCA scheme by 11%, outperforms the best three-level hierarchy-while using less silicon area-by 13%, and comes within 13% of an ideal, minimal hit latency solution. Copyright 2002 ACM.

关键词： Cache memory

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ENHANCED GRADIENT-BASED MOTION VECTOR COPROCESSOR

ENHANCED GRADIENT-BASED MOTION VECTOR COPROCESSOR

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19th International Conference on Field Programmable Logic and Applications

作者： Botella, Guillermo Garcia, Antonio Meyer-Baese, Uwe Rodriguez, Manuel Molina, M. Carmen Parrilla, Luis FAMU-FSU College of Engineering Department of Electrical and Computer Electronics United States Department of Computer Architecture and Computer Technology Universidad de Granada Spain Department of Electronics and Computer Technology Universidad de Granada Spain Department of Computer Architecture and Automation Universidad Complutense de Madrid Spain

ISBN: (纸本)9781424438914

The present work describes a reliable improved gradient optical flow estimation system using FPGAs. This structure is based on space-temporal processing and the use of steerable filters. This model can be enhanced using psychophysical and bioinspired properties according to biological vision in order to mimic the singularity and the performance of mammalians. Experimental results and the resources used to analyze the associate customizability of the system are discussed.

关键词： Coprocessor

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Critical path analysis of the TRIPS architecture

Critical path analysis of the TRIPS architecture

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ISPASS 2006: IEEE International Symposium on Performance Analysis of Systems and Software, 2006

作者： Nagarajan, Ramadass Xia, Chen McDonald, Robert G. Burger, Doug Keckler, Stephen W. Computer Architecture and Technology Laboratory Department of Computer Sciences University of Texas Austin

ISBN: (纸本)1424401860

Fast, accurate, and effective performance analysis is essential for the design of modern processor architectures and improving application performance. Recent trends toward highly concurrent processors make this goal increasingly difficult. Conventional techniques, based on simulators and performance monitors, are ill-equipped to analyze how a plethora of concurrent events interact and how they affect performance. Prior research has shown the utility of critical path analysis in solving this problem [5,18]. This analysis abstracts the execution of a program with a dependence graph. With simple manipulations on the graph, designers can gain insights into the bottlenecks of a design. This paper extends critical path analysis to understand the performance of a next-generation, high-ILP architecture. The TRIPS architecture introduces new features not present in conventional superscalar architectures. We show how dependence constraints introduced by these features, specifically the execution model and operand communication links, can be modeled with a dependence graph. We describe a new algorithm that tracks critical path information at a fine-grained level and yet can deliver an order of magnitude (30x) improvement in performance over previously proposed techniques [5, 18]. Finally, we provide a breakdown of the critical path for a select set of benchmarks and show an example where we use this information to improve the performance of a heavily-hand-optimized program by as much as 11%. © 2006 IEEE.

关键词： Critical path analysis

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March U: A test for unlinked memory faults

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IEE PROCEEDINGS-CIRCUITS DEVICES AND SYSTEMS 1997年第3期144卷 155-160页

作者： vandeGoor, AJ Gaydadjiev, GN Department of Electrical Engineering Section Computer Architecture & Digital Technique Delft University of Technology Mekelweg 4 Delft 2628 CD The Netherlands

Short and efficient memory tests is the goal of every test designer. To reduce the cost of production tests, often a simple test which covers most of the faults, e.g. all simple (unlinked) faults, is desirable to eliminate most defective parts;a more costly test can be used thereafter to eliminate the remainder of the bad parts. Such a test-cost efficient approach is used by most manufacturers. In addition, system power-on tests are not allowed a long test time while a high fault coverage is desirable. The authors propose a new realistic fault model (the disturb fault model), and a set of tests for unlinked faults. These tests have the property of covering all simple (unlinked) faults at a very reasonable test time compared with existing tests.

关键词： memory tests March tests memory faults fault model simple faults disturb fault

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YOLO-LLTS: Real-Time Low-Light Traffic Sign Detection via Prior-Guided Enhancement and Multi-Branch Feature Interaction

arXiv

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arXiv 2025年

作者： Lin, Ziyu Wu, Yunfan Ma, Yuhang Chen, Junzhou Zhang, Ronghui Wu, Jiaming Yin, Guodong Lin, Liang Guangdong Key Laboratory of Intelligent Transportation System School of intelligent systems engineering Sun Yat-sen University Guangzhou510275 China Department of Architecture and Civil Engineering Chalmers University of Technology Sven Hultins gata 6 GothenburgSE-412 96 Sweden School of Mechanical Engineering Southeast University Nanjing211189 China School of Computer Science and Engineering Sun Yat-sen University Guangzhou510275 China

Detecting traffic signs effectively under low-light conditions remains a significant challenge. To address this issue, we propose YOLO-LLTS, an end-to-end real-time traffic sign detection algorithm specifically designed for low-light environments. Firstly, we introduce the High-Resolution Feature Map for Small Object Detection (HRFM-TOD) module to address indistinct small-object features in low-light scenarios. By leveraging high-resolution feature maps, HRFM-TOD effectively mitigates the feature dilution problem encountered in conventional PANet frameworks, thereby enhancing both detection accuracy and inference speed. Secondly, we develop the Multi-branch Feature Interaction Attention (MFIA) module, which facilitates deep feature interaction across multiple receptive fields in both channel and spatial dimensions, significantly improving the model’s information extraction capabilities. Finally, we propose the Prior-Guided Enhancement Module (PGFE) to tackle common image quality challenges in low-light environments, such as noise, low contrast, and blurriness. This module employs prior knowledge to enrich image details and enhance visibility, substantially boosting detection performance. To support this research, we construct a novel dataset, the Chinese Nighttime Traffic Sign Sample Set (CNTSSS), covering diverse nighttime scenarios, including urban, highway, and rural environments under varying weather conditions. Experimental evaluations demonstrate that YOLO-LLTS achieves state-of-the-art performance, outperforming the previous best methods by 2.7% mAP50 and 1.6% mAP50:95 on TT100K-night, 1.3% mAP50 and 1.9% mAP50:95 on CNTSSS, and achieving superior results on the CCTSDB2021 dataset. Moreover, deployment experiments on edge devices confirm the real-time applicability and effectiveness of our proposed approach. Copyright © 2025, The Authors. All rights reserved.

关键词： Traffic signs

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An integrative approach to undergraduate and graduate change

An integrative approach to undergraduate and graduate change

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2008 ASEE Annual Conference and Exposition

作者： Eppes, Tom Milanovic, Ivana Girouard, Janice University of Hartford Department of Electrical and Computer Engineering College of Engineering Technology and Architecture Department of Mechanical Engineering College of Engineering Technology and Architecture College of Engineering Technology and Architecture

This paper describes the efforts we undertook when faced with several strategic challenges and opportunities in strengthening our graduate and undergraduate programs. First, a Flex Advantage Plan (FAP) was developed to enhance our undergraduate engineering technology (ET) programs by better utilizing the inherent curricular flexibilities that were laying dormant. FAP provides distinction and uniqueness to program majors by presenting students with educational choices that add depth in a chosen discipline and/or another area of study. A proposal to enhance our graduate program was subsequently prepared. A new Masters of Industrial Management (MIM) would be introduced as an interdisciplinary course-based program with a curriculum that spans three realms of study: technical, management and special topics. MIM is envisioned to complement the current project-based Masters program and enable its transition to a thesis-based track. The need to improve the linkage between our undergraduate and graduate studies is also discussed. We intend to expand eligibility and increase awareness for undergraduate students as well as create more relevant alternatives for part-time graduate students. Such an integrated approach is expected to yield a sequence of enrollment increments as the proposed changes are implemented and publicized within our target market. This in turn should set the stage for the migration to a thesis-based Masters. The changes we have made or proposed create an array of educational pathways greater than the sum of their parts. © American Society for Engineering Education, 2008.

关键词： Students

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A MAPLE PACKAGE OF AUTOMATED DERIVATION OF HOMOTOPY ANALYSIS SOLUTION FOR PERIODIC NONLINEAR OSCILLATIONS

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Journal of Systems Science & Complexity 2012年第3期25卷 594-616页

作者： Yinping LIU Shijun LIAO Zhibin LI Department of Computer Science and Technology East China Normal University State Key Lab of Ocean Engineering School of Naval ArchitectureOcean and Civil EngineeringDepartment of MathematicsShanghai Jiaotong University Department of Computer Science East China Normal University

Based on the homotopy analysis method, a general analytic technique for strongly nonlinear problems, a Maple package of automated derivation （ADHO） for periodic nonlinear oscillation systems is presented. This Maple package is valid for periodic oscillation systems in rather general, and can automatically deliver the accurate approximations of the frequency co and the mean of motion δof a nonlinear periodic oscillator. Based on the homotopy analysis method which is valid even for highly nonlinear problems, this Maple package can give accurate approximate expressions even for nonlinear oscillation systems with strong nonlinearity. Besides, the package is user-friendly： One just needs to input a governing equation and initial conditions, and then gets satisfied analytic approximations in few seconds. Several different types of examples are given in this paper to illustrate the validity of this Maple package. Such kind of package provides us a helpful and easy-to-use tool in science and engineering to analyze periodic of this Maple package from the is published publicly. nonlinear oscillations. And it is free address http：//*** to download the electronic version ***/*** once the paper

关键词： Automated derivation homotopy analysis method homotopy Pade technique nonlinear oscillation Wu＇s elimination method.

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Smart environment application architecture

Smart environment application architecture

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2nd International Conference on Pervasive Computing Technologies for Healthcare 2008, PervasiveHealth

作者： Salvador, Zigor Larrea, Mikel Lafuente, Alberto Department of Computer Architecture and Technology University of the Basque Country Spain

ISBN: (纸本)9789639799158

Pervasive computing is a field where many different entities come into play. In particular, development of useful applications in the field of pervasive healthcare requires dealing with substantial levels of complexity regarding the management of the pervasive environment where users and applications coexist. Service oriented middleware architectures simplify the task of creating those applications and turn the management of pervasive environments into a productive activity. We present our ongoing approach to the design of such a middleware architecture, known as the Smart Environment Application architecture.

关键词： Ubiquitous computing

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