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子模式

子模式的相关文献在1979年到2022年内共计124篇,主要集中在自动化技术、计算机技术、经济计划与管理、教育 等领域,其中期刊论文73篇、会议论文1篇、专利文献66662篇;相关期刊63种,包括领导决策信息、黄河.黄土.黄种人、外国经济与管理等; 相关会议1种,包括2008国际粉体技术与应用论坛暨全国粉体产品与设备应用技术交流大会等;子模式的相关文献由286位作者贡献,包括K·姬优、N·佩甘巴里安、T·N·阮等。

子模式—发文量

期刊论文>

论文:73 占比:0.11%

会议论文>

论文:1 占比:0.00%

专利文献>

论文:66662 占比:99.89%

总计:66736篇

子模式—发文趋势图

子模式

-研究学者

  • K·姬优
  • N·佩甘巴里安
  • T·N·阮
  • 代旭
  • 任成娟
  • 余宇
  • 储泽世
  • 兰梦珂
  • 刘倩
  • 刘崇文
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 黄晶
    • 摘要: 共享经济模式下,在企业资源整合与创新过程中融入共享理念,可以全面提升运营能力。作为共享经济的子模式,众包模式在互联网时代得到更多关注。为了及时反馈新产品缺陷,针对性完善,应在企业设计、研发、创新等阶段融入众包技术,为新产品改良提供更多时间,树立良好的营销口碑,在制定科学营销策略的前提下,增加营销渠道。本文着重分析了众包模式下,企业营销创新策略与方法,以便切实提升自身运营水平。
    • 沈瑛; 王辉; 叶阳; 董天阳
    • 摘要: For the problem of difficult to extract discriminant feature of each individual in single sample face recognition,this paper proposes a single sample face recognition method based on sub-pattern.The Proposed method considers that different parts of the face have different contributions to the face recognition accuracy and discriminant feature of each individual can be learned from external face dataset.During the face recognition process,the whole face is divided into five face sub-patterns with five key points detected by the face alignment algorithm.In the feature extraction of each sub-pattern,combined with SVM algorithm to get the classifier belongs to each sub-mode with external face dataset.Finally the classification results of each person's face sub-pattern are weighted to obtain best recognition object.The experiments were evaluated with the existing methods in Extend-Yale-B,ORL,and AR.The experimental results show that the proposed method has a great improvement in recognition accuracy.%针对在单样本人脸识别中每类个体的鉴别性特征难以提取的问题,提出一种基于子模式的单样本人脸识别方法.所提方法考虑了人脸的不同部位对人脸识别精度有不同的贡献度,并引入外部人脸数据集来训练学习得到每类个体的鉴别性特征.在进行人脸识别时,采用人脸校准算法提取人脸的5个基准点,并以此为中心将人脸划分成5个固定大小的子模式.在每个子模式的特征提取上,引入外部人脸数据集,并结合SVM 算法训练得到属于每个子模式的分类器.最后,对每个子模式的分类结果做加权融合,得到最佳识别对象.在3个公开的人脸数据集Extend-Yale-B,ORL,AR上与现有方法进行实验比较,结果表明所提方法在识别精度上有较大提升.
    • 李林; 魏新华; 沈宝国
    • 摘要: 为了实现复杂工业环境中单目视觉三维工件的实时精确定位,提出了一种基于自适应子模式流形学习(SP-IVP)的三维工件位姿估计方法.给出了通过非线性降维框架和重构高维空间的流形构建方法,获得最优保持本质变量连续性的低维特征子空间;实现了基于该流形构建方法的工件位姿估计;进而给出了自适应子模式的分割规则,并提出了遮挡情况下基于SP-IVP的工件位姿估计方法.以3种常见工件为试验对象,水平旋转和垂直旋转为零件的本质变量,完成了遮挡以及无遮挡情况下的工件位姿估计.结果表明:所提出方法的平均位姿估计时间为73.6 ms,可满足实时处理的需求;螺丝钳、曲柄轴和圆柱体定位准确率为95.4%,96.1%,98.4%;在不同遮挡情况下,新方法的识别率高于其他方法,并且进行子模式分割的识别率高于不进行子模式分割的方法.%To locate three-dimensional workpiece of monocular vision timely and accurately in complex industrial environment , a pose estimation method of three-dimensional workpiece was proposed based on adaptive sub-pattern manifold learning ( SP-IVP ) . The constructing manifold method was given by nonlinear reduction of dimension framework and reconstruction of high dimension space , and the low dimensional feature sub-space was obtained to maintain the optimal continuity of nature variable .The pose estimation of workpiece was realized based on the manifold construction method .The pose estimation method of workpiece with occlusion was proposed based on SP-IVP after the segmentation rules of adaptive sub-pattern was given .Three kinds of common workpieces were tested , and the horizontal rotation and the vertical rotation were chosen as natural variables to conduct pose estimation of workpieces with or without occlusion .The results show that the average pose estimation time of the proposed method is 73 .6 ms, which can meet the requirement of real-time processing .The positioning accuracy rates of screwdriver , crankshaft and cylinder are 95 .4%, 96 .1% and 98 .4%, respectively .The recognition accuracy of the proposed method is higher than those of other methods in different occlusion cases .The sub-pattern segmentation method is performed with higher recognition rate than the method without sub -pattern segmentation .
    • ZHANG Xiang; LI Zhanbin; LI Peng; TANG Shanshan; WANG Tian; ZHANG Hui
    • 摘要: Aeolian-fluvial interplay erosion regions are subject to intense soil erosion and are of particular concern in loess areas of northwestern China.Understanding the composition,distribution,and transport processes of eroded sediments in these regions is of considerable scientific significance for controlling soil erosion.In this study,based on laboratory rainfall simulation experiments,we analyzed rainfall-induced erosion processes on sand-covered loess slopes(SS)with different sand cover patterns(including length and thickness)and uncovered loess slopes(LS)to investigate the influences of sand cover on erosion processes of loess slopes in case regions of aeolian-fluvial erosion.The grain-size curves of eroded sediments were fitted using the Weibull function.Compositions of eroded sediments under different sand cover patterns and rainfall intensities were analyzed to explore sediment transport modes of SS.The influences of sand cover amount and pattern on erosion processes of loess slopes were also discussed.The results show that sand cover on loess slopes influences the proportion of loess erosion and that the compositions of eroded sediments vary between SS and LS.Sand cover on loess slopes transforms silt erosion into sand erosion by reducing splash erosion and changing the rainfall-induced erosion processes.The percentage of eroded sand from SS in the early stage of runoff and sediment generation is always higher than that in the late stage.Sand cover on loess slopes aggravates loess erosion,not only by adding sand as additional eroded sediments but also by increasing the amount of eroded loess,compared with the loess slopes without sand cover.The influence of sand cover pattern on runoff yield and the amount of eroded sediments is larger than that of sand cover amount.Furthermore,given the same sand cover pattern,a thicker sand cover could increase sand erosion while a thinner sand cover could aggravate loess erosion.This difference explains the existence of intense erosion on slopes that are thinly covered with sand in regions where aeolian erosion and fluvial erosion interact.
    • 丁强龙; 王津; 张学杰
    • 摘要: For addressing problems such as multi-layer relational query and community detection, graph database outper-forms relational database. However, most data of existing applications have stored in the form of relationship. Therefore, how to extract-transform-load(ETL)relational data to graph data efficiently and absolutely is still an important problem of deploying graph database applications. Existing researches suffer from three major limitations:(1)The quality of con-verted graph data are poor;(2)the efficiency of transforming is low;(3)the transformed results are not suitable for dis-tributed storage. To overcome these limitations, a sub-schema-based ETL method for transforming relational data to graph data is proposed in this paper. By splitting schema of relational database to several sub-schemas, this method improves the algorithm and procedure of previous ETLs and provides an efficient way for parallel ETL. The transformed results can sat-isfy the requirements of distributed storage, and conduct to be the basis data for Spark GraphX computing framework. Fi-nally, Java EE and Neo4j are applied to implement the prototype system for experimental verification. The comparative re-sults show that the improved ETL method yields better performance than previous methods.%图数据库在解决多层关系查询、社区发现等问题时性能优于关系数据库.然而目前大量的数据以关系数据的形式存储,如何高效完整地进行关系数据到图数据的ETL,即抽取、转换、加载,是图数据库应用领域研究的重要问题.国内外对该问题有了一些研究,但存在转换后的图数据质量不高、转换效率低、转换结果不利于分布式存储等问题.因此,提出基于子模式的关系数据到图数据ETL方法,改进原有ETL方法的流程和算法.该方法将关系数据库模式拆分为若干个子模式,并行进行ETL.不仅提高了ETL的效率,转换结果能满足图数据的分布式存储要求,也可以作为Spark GraphX计算框架的基础数据.最后,使用Java EE和Neo4j开发了原型系统,并进行了实验验证.结果表明,改进后的ETL方法获得了较已有方法更好的转化性能.
    • 王洋
    • 摘要: Debian的架构通过详细分析软件包的相关性来了解软件包之间的相互作用进行了研究.Debian中的依赖是广泛的,这使得其成为一个有趣的架构,但它们使得分析更为复杂.研究中提供了分层模式的分析,此模式基于如何使用它们将每个软件包分类为五个层之一.这些层也可以被可视化以给出应用如何被结构化的简明视图.使用这些视图,研究发现有新的架构子模式和反子模式,可以帮助开发人员创建和维护软件包.
    • 罗璨; 徐万江; 朱灿焰
    • 摘要: 步态识别的准确性容易受到衣着类型及携带背包等局部变化的影响.针对这一问题,首先提出一种基于局部信息熵值的子模式划分方法;然后对正常行走和局部变化两种状态下的每一对子特征进行典型相关分析,得到多个最佳投影矩阵对,并将子特征分别投影到基于上述最佳投影矩阵对的特征子空间中;最后以整体相关系数作为分类依据,以减小局部变化对于整体识别结果的影响.在CASIA-B数据库上的实验表明在所有视角下所提算法都能取得较好的性能.
    • 宫海晓; 贺杰; 郭慧
    • 摘要: 借助非对称逆布局思想,提出一种改进的正方形NAM二值图像表示方法,对其存储结构、数据量进行了理论分析,同时选取部分常用的二值图像,对该方法进行了实验测试。结果表明:与正方形NAM和线性四元树图像表示方法相比,该方法有效地降低了图像的存储空间、减少了子模式的数据量。%A representation method for binary image using improved NAM with square , which is based on the concept of non -symmetry anti-packing theory , is proposed in this paper .With the help of this method , a theoretical analysis has been conducted on its storage structure and data amount .Besides, some general binary images have been selected so as to test the method .The results show that, compared with the image representation method using NAM with square or linear quadtree , the method can decrease the im-age storage space effectively as well as reduce the data amount of subpatterns .
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