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检索条件"主题词=sorting algorithm"

共 460 条记录，以下是11-20 订阅

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Super Sort sorting algorithm 3

Super Sort Sorting Algorithm

引用

3rd International Conference for Convergence in Technology (I2CT)

作者： Gugale, Yash PES Modern Coll Engn Dept Comp Engn Pune Maharashtra India

ISBN: (纸本)9781538642733

sorting algorithms are a major area of research in computer science and engineering where the simple task of sorting the numbers leads to complex algorithms. In recent years, many researchers have proposed several sorting techniques to enhance time and space complexities of the algorithms. The sorting technique presented in this paper makes use of the natural sequence of sorted elements in an array of random numbers so as to reduce the number of steps needed to sort. The complexity of the proposed algorithm is O(nlogn) where n represents the number of elements in the input array.

关键词： sorting algorithm super sort time complexity space complexity

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An Image sorting algorithm Based on SIFT Feature Matching

An Image Sorting Algorithm Based on SIFT Feature Matching

引用

Computer and Computational Sciences (ICCCS)

作者： Ying, Zhou Jun, Zhang Northwestern Polytech Univ Sch Elect & Informat Xian Peoples R China Northwestern Polytech Univ Sch Automat Xian Peoples R China

ISBN: (纸本)9781479918195

The panoramic image mosaic technology means images with partial overlapping area are composited to a 360-degree circular image which describes the information of a certain scene. A hotspot of this technology is how to determine the image order accurately and fast when the number of images is large. In this paper, we present a novel image sorting algorithm based on SIFT(Scale-Invariant Features Transform). In the proposed method, matching feature is firstly characterized by calculating the number of matching points between images to find the nearest image of a certain one. After calculating the matching points one by one, an accurate picture order could be finally obtained. The results show the effectiveness of the proposed algorithm.

关键词： Panoramic image mosaic SIFT sorting algorithm

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A Optimized Capacitor Voltage Balance Strategy using Binary Number sorting algorithm for Modular Multilevel Converter 8

A Optimized Capacitor Voltage Balance Strategy using Binary ...

引用

8th IEEE International Symposium on Next-Generation Electronics (ISNE)

作者： Wang, Donghao Zhang, Baoge Lanzhou Jiaotong Univ Dept Automat & Elect Engn Lanzhou Peoples R China

ISBN: (纸本)9781728120621

Capacitor voltage balancing strategy for Suhmodules (SMs) is one of the key technologies for modular multi-level converters(MMC). The conventional strategy has the problems of large computation and high switching frequency of devices. In order to solve these problems, a mark and operation voltage balancing strategy (MOVBS) is proposed. This strategy marks SMs with two different labels according to the amplitude of capacitor voltage of SMs and current direction of arms, then do sorting and selecting operations to SMs based on the marking results. It reduces sorting times, switching frequency and power loss of devices. For capacitor voltage sorting process, a binary radix sorting algorithm(BRSA) is proposed to improve sorting speed and efficiency of MOVBS. Finally, the feasibility and effectiveness of the MOVBS is verified with a 11-level MMC-HVDC simulation model created in Matlab/Simulink.

关键词： modular multilevel converters capacitor voltage balancing switching frequency power loss sorting algorithm

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MONTRES-NVM: an External sorting algorithm for Hybrid Memory 7

MONTRES-NVM: an External Sorting Algorithm for Hybrid Memory

引用

7th IEEE Non-Volatile Memory Systems and Applications Symposium (NVMSA)

作者： Khernache, Mohammed Bey Ahmed Laga, Arezki Boukhobza, Jalil Univ Bretagne Sud Lab STICC UMR 6285 F-56100 Lorient France Univ Bretagne Occidentale Lab STICC UMR 6285 F-29200 Brest France

ISBN: (纸本)9781538674031

DRAM technology is approaching its scaling limit and the use of emerging NVM is seen as one possible solution to such an issue. As NVM technologies are not mature enough and does not outperform DRAMs, several studies expect the use of hybrid main memories containing both DRAM and PCM NVM. Redesigning applications for such systems is mandatory as PCM does not have the same performance model as DRAM. In this context, we designed a hybrid memory-aware sorting algorithm called MONTRES-NVM. Since an NVM-based hybrid memory presents a performance gap between DRAM and PCM, we believe that the sorting algorithm falls in the external sorting category. As a matter of fact, we extended our previously designed flash-based external sorting algorithm MONTRES for a hybrid memory by taking profit of byte addressability, and performance asymmetry between reads and writes. MONTRES-NVM enhances the performance of the merge sort algorithm on PCM by more than 60%, the merge sort on DRAM by 3-40% and MONTRES (on a hybrid memory) by 3-33% according to the proportion of already sorted data in the dataset.

关键词： sorting algorithm Hybrid memory Non Volatile Memory Phase Change Memory

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Research And Implementation of Database High Performance sorting algorithm With Big Data 2

Research And Implementation of Database High Performance Sor...

引用

2017 IEEE 2nd International Conference on Big Data Analysis（ICBDA 2017）

作者： Chen Hongyan Wan Junwei Lu Xianli Beijing Institute of Tracking and Telecommunicaitons Technology

ISBN: (纸本)9781509036202

According to the demand of large data sorting algorithm,a new efficient algorithm for large data sorting is *** algorithm by constructing the equivalent sort keys,optimized quicksort algorithm;through the technology of task driven,AIO and double buffer mechanism to make full use of system resources;in algorithm implementation,using multi thread processing tasks,by controlling the number of threads of control *** utilization of these technologies,the algorithm will achieve the separation of database connections and threads,and improve the concurrency of database support,so that the ranking of big data performance close to the theoretical limit value.

关键词： domestic database Big data sorting algorithm Independently controllable Equivalent sort keys

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ImageRank: A Novel sorting algorithm with Relevance Feedback in Application of National Costume Image Retrieval 2

ImageRank: A Novel Sorting Algorithm with Relevance Feedback...

引用

2nd IEEE International Conference on Signal and Image Processing (ICSIP)

作者： Ma, Baiyou Xu, Tianwei Zhou, Juxiang Yunnan Normal Univ Key Lab Educ Informatizat Nationalities Minist Educ Kunming Yunnan Peoples R China Jining Med Univ Acad Affairs Off Jining Peoples R China

ISBN: (纸本)9781538609699

It is difficult to obtain fairly satisfactory result for national costume images retrieval in real application using existing search engine due to the complexity of visual features and semantic information implied in national costume. Given the fact, a novel sorting algorithm ImageRank is proposed for image retrieval with relevance feedback in this paper, inspired by the PageRank algorithm used by Google Search to rank websites or webpages in their search engine results. ImageRank is realized based on Lucene Image Retrieval (LIRE) toolkit, which is a Java library that provides a simple way to retrieve images and photos based on color and texture characteristics. And it assimilates a good deal of PageRank to accomplish efficient image retrieval by ensuring accurate level of images correlation in resource repository through update the indexical (points-to) relationship timely according to user's behavior dynamically. Experimental results investigate that the performance of ImageRank is better than LIRE. In addition, the conservativeness and convergence of IR value in ImageRank are also verified.

关键词： image retrieval relevance feedback LIRE sorting algorithm national costume

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Bit-index Sort: A Fast Non-comparison Integer sorting algorithm for Permutations

Bit-index Sort: A Fast Non-comparison Integer Sorting Algori...

引用

International Conference on Technological Advances in Electrical, Electronics and Computer Engineering (TAEECE)

作者： Curi-Quintal, L. F. Cadenas, J. O. Megson, G. M. Univ Yucatan UADY Fac Math Merida Venezuela Univ Reading Sch Syst Engn Reading RG6 2AH Berks England Univ Westminster Sch Elect & Comp Sci London W1R 8AL England

ISBN: (纸本)9781467356138;9781467356121

This paper describes a fast integer sorting algorithm, herein referred to as Bit-index sort, which does not use comparisons and is intended to sort partial permutations. Experimental results exhibit linear complexity order in execution time. Bit-index sort uses a bit-array to classify input sequences of distinct integers, and exploits built-in bit functions in C compilers, supported by machine hardware, to retrieve the ordered output sequence. Results show that Bit-index sort outperforms quicksort and counting sort algorithms when compared in their execution time. A parallel approach for Bit-index sort using two simultaneous threads is also included, which obtains further speedups of up to 1.6 compared to its sequential case.

关键词： sorting algorithm pernmtations linear complexity bit-array index counting leading zeros counting trailing zeros

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Mapping sorting algorithm

Mapping Sorting Algorithm

引用

SAI Computing Conference (SAI)

作者： Osama, Hoda Omar, Yasser Badr, Amr Arab Acad Sci Technol & Maritime Transport Fac Comp & Informat Cairo Egypt Cairo Univ Fac Comp & Informat Cairo Egypt

ISBN: (纸本)9781467384605

computing algorithms are a basic research area in computer science. In last years, many researchers proposed several sorting techniques to enhance time complexity and space complexity [8]. In this paper we present a sorting algorithm for any datatype, which uses mapping methodology. The mapping will be between elements of array and indexes without using any comparisons and swapping. The paper analyzes time complexity of proposed algorithm mathematically and empirically. The complexity of proposed algorithm is O(xlogm)+O(n) where n represents number of sorted elements and m, x<sorting algorithm is better than or almost equal to quick sorting.

关键词： sorting algorithm mapping time complexity space complexity

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Study on Information Retrieval sorting algorithm in Network-based Manufacturing Environment

Study on Information Retrieval Sorting Algorithm in Network-...

引用

3rd International Conference on Green Power, Materials and Manufacturing Technology and Applications

作者： Yang, JiYing Zhang, Bei Mao, Yu Yunnan RTV Univ Kunming 650223 Yunnan Peoples R China Yunnan Univ Kunming 650223 Yunnan Peoples R China YunnanNormal Univ Kunming 650223 Yunnan Peoples R China

ISBN: (纸本)9783037859865

The core problem of information retrieval is concentrated in the document for the user to retrieve the most relevant sub-set of documents, relying on sorting algorithms on the search results according to relevance sort, sorted the results as the user asked the query response information retrieval performance is determined by many factors, such as to query expressions quality index stemmer nonsense word disabled, query expansion technology, but fundamentally it is determined by the sort function sort function in some Standards document query indicates the degree of matching with the user, and accordingly to make a document with respect to the user's judgment, then the document in accordance with the degree of correlation with respect to the user in descending order, and returns the ordered list of documents as a result of the retrieval the pros and cons of the sorting algorithm directly affect the efficiency of the retrieval.

关键词： Information Retrieval sorting algorithm Intelligent

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The sorting algorithm of analytic hierarchy process based on grey incidence

The sorting algorithm of analytic hierarchy process based on...

引用

6th International Conference on Measuring Technology and Mechatronics Automation (ICMTMA)

作者： Zhan Tangsen Wu Qian Fang Xiaohong Jingdezhen Ceram Inst Sch Informat Engn Jingdezhen 333403 Jiangxi Peoples R China

ISBN: (纸本)9781479934348

Aimed at uniformity of sorting about analytic hierarchy process(AHP),analytic hierarchy process based on grey incidence is brought *** sorting results are got through ways of different weights and several ***,overcoming uniformity of sorting,complex process of rectifying judgment Matrix and consistence verification,that favor to analysis difference of algorithm and correctness of sorting results, more science and equitable sorting result is gained,it favor extension and application of AHP.

关键词： grey incidence analytic hierarchy process sorting algorithm mean weight

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