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中间塔 1

二元相似度测量;二元特征;测量组合;软件模块化 1

代码复用;代码推荐;树相似度;结构信息 1

元素亲和性 1

元素周期表 1

冶金学 1

卡尔曼滤波;多重统计相似度量;多样野值;定点迭代;状态估计 1

地区行动计划 1

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字符串相似性连接;编辑距离;过滤再细化;数据划分;组合频率向量 1

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彩色图像灰度化;子空间建模;二阶多项式模型;梯度相关相似;离散搜索 1

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New approach for distinguishing the similarity of links

XIANG Jianyun, GE Maozhong, WANG Zhiping

《机械工程前沿(英文)》 2008年 第3卷 第1期   页码 55-58 doi: 10.1007/s11465-008-0004-7

摘要: Based on the problem of distinguishing the similarity of links in the regenerative innovation design of a kinematic chain, a new approach using the standard power matrix of the adjacent matrix is presented in this paper. The implementation of the approach is illustrated with an example. This method solves the technically baffling problem in mechanism type synthesis and reduced redundant design scheme, and raises the reliability and the efficiency of the regenerative innovation design of the kinematic chain.

关键词: kinematic     similarity     implementation     mechanism     standard    

Case modifying of high-speed cutting database based on CSP and similarity theory

Kejun XIANG, Zhanqiang LIU, Xing AI

《机械工程前沿(英文)》 2009年 第4卷 第1期   页码 83-87 doi: 10.1007/s11465-009-0014-0

摘要: By analyzing the reasoning of a high-speed cutting database system, a case modifying method is put forward. According to the variables’ difference of the solution part in a case, a constraint satisfaction problem (CSP) and similarity calculation are used to modify a case. The constraint relationship of discrete variables is described by establishing a rule knowledge base. The algorithm of CSP is used to solve the discrete variable constraint problem. On the basis of the high-speed cutting theory, a similarity calculation formula is deduced to calculate the consecutive variables. The CSP and similarity calculation are applied to case modifying, which is possible to automatically modify cases in the high-speed cutting database system.

关键词: high-speed cutting database     case modifying     CSP     similarity calculation    

Subspace transform induced robust similarity measure for facial images

Jian Zhang, Heng Zhang, Li-ling Bo, Hong-ran Li, Shuai Xu, Dong-qing Yuan,zhangjian@jou.edu.cn,zhangheng@jou.edu.cn

《信息与电子工程前沿(英文)》 2020年 第21卷 第9期   页码 1267-1412 doi: 10.1631/FITEE.1900552

摘要: Similarity measure has long played a critical role and attracted great interest in various areas such as and machine perception. Nevertheless, there remains the issue of developing an efficient two-dimensional (2D) robust similarity measure method for images. Inspired by the properties of subspace, we develop an effective 2D technique, named transformation similarity measure (TSM), for robust . Specifically, the TSM method robustly determines the similarity between two well-aligned frontal facial images while weakening interference in the by linear transformation and singular value decomposition. We present the mathematical features and some odds to reveal the feasible and robust measure mechanism of TSM. The performance of the TSM method, combined with the nearest neighbor rule, is evaluated in under different challenges. Experimental results clearly show the advantages of the TSM method in terms of accuracy and robustness.

Modeling of oil near-infrared spectroscopy based on similarity and transfer learning algorithm

Yifei Wang, Kai Wang, Zhao Zhou, Wenli Du

《化学科学与工程前沿(英文)》 2019年 第13卷 第3期   页码 599-607 doi: 10.1007/s11705-019-1807-2

摘要: Near-infrared spectroscopy mainly reflects the frequency-doubled and total-frequency absorption information of hydrogen-containing groups (O‒H, C‒H, N‒H, S‒H) in organic molecules for near-infrared lights with different wavelengths, so it is applicable to testing of most raw materials and products in the field of petrochemicals. However, the modeling process needs to collect a large number of laboratory analysis data. There are many oil sources in China, and oil properties change frequently. Modeling of each raw material is not only unfeasible but also will affect its engineering application efficiency. In order to achieve rapid modeling of near-infrared spectroscopy and based on historical data of different crude oils under different detection conditions, this paper discusses about the feasibility of the application of transfer learning algorithm and makes it possible that transfer learning can assist in rapid modeling using certain historical data under similar distributions under a small quantity of new data. In consideration of the requirement of transfer learning for certain similarity of different datasets, a transfer learning method based on local similarity feature selection is proposed. The simulation verification of spectral data of 13 crude oils measured by three different probe detection methods is performed. The effectiveness and application scope of the transfer modeling method under different similarity conditions are analyzed.

关键词: near-infrared spectroscopy     transfer learning     similarity     modeling    

Dynamic simulation of gas turbines via feature similarity-based transfer learning

Dengji ZHOU, Jiarui HAO, Dawen HUANG, Xingyun JIA, Huisheng ZHANG

《能源前沿(英文)》 2020年 第14卷 第4期   页码 817-835 doi: 10.1007/s11708-020-0709-9

摘要: Since gas turbine plays a key role in electricity power generating, the requirements on the safety and reliability of this classical thermal system are becoming gradually strict. With a large amount of renewable energy being integrated into the power grid, the request of deep peak load regulation for satisfying the varying demand of users and maintaining the stability of the whole power grid leads to more unstable working conditions of gas turbines. The startup, shutdown, and load fluctuation are dominating the operating condition of gas turbines. Hence simulating and analyzing the dynamic behavior of the engines under such instable working conditions are important in improving their design, operation, and maintenance. However, conventional dynamic simulation methods based on the physic differential equations is unable to tackle the uncertainty and noise when faced with variant real-world operations. Although data-driven simulating methods, to some extent, can mitigate the problem, it is impossible to perform simulations with insufficient data. To tackle the issue, a novel transfer learning framework is proposed to transfer the knowledge from the physics equation domain to the real-world application domain to compensate for the lack of data. A strong dynamic operating data set with steep slope signals is created based on physics equations and then a feature similarity-based learning model with an encoder and a decoder is built and trained to achieve feature adaptive knowledge transferring. The simulation accuracy is significantly increased by 24.6% and the predicting error reduced by 63.6% compared with the baseline model. Moreover, compared with the other classical transfer learning modes, the method proposed has the best simulating performance on field testing data set. Furthermore, the effect study on the hyper parameters indicates that the method proposed is able to adaptively balance the weight of learning knowledge from the physical theory domain or from the real-world operation domain.

关键词: gas turbine     dynamic simulation     data-driven     transfer learning     feature similarity    

Chemically reactive solute transfer in a boundary layer slip flow along a stretching cylinder

Swati Mukhopadhyay

《化学科学与工程前沿(英文)》 2011年 第5卷 第3期   页码 385-391 doi: 10.1007/s11705-011-1101-4

摘要: This paper presents the distribution of a solute undergoing a first order chemical reaction in an axisymmetric laminar boundary layer flow along a stretching cylinder. Velocity slip condition at the boundary is used instead of no-slip condition. Similarity transformations are used to convert the partial differential equations corresponding to momentum and concentration into highly nonlinear ordinary differential equations. Numerical solutions of these equations are obtained by the shooting method. The velocity decreases with increasing slip parameter. The skin friction as well as the mass transfer rate at the surface is larger for a cylinder than for a flat plate.

关键词: boundary layer     stretching cylinder     partial slip     mass transfer     similarity solution    

A dynamic procedure based on the scale-similarity hypotheses for large-eddy simulation

ZHOU Bing, CUI Guixiang, CHEN Naixiang

《能源前沿(英文)》 2007年 第1卷 第4期   页码 468-472 doi: 10.1007/s11708-007-0069-z

摘要: Current dynamic procedures in large-eddy simulation treat the two subgrid-scale stresses in the Germano identity with the same subgrid base model. Thus to get the base model coefficient, the coefficient must be assumed to be consta

关键词: large-eddy simulation     Germano identity     coefficient     subgrid-scale    

一种面向软件缺陷预测的相似性度量特征选择方法 Article

Qiao YU, Shu-juan JIANG, Rong-cun WANG, Hong-yang WANG

《信息与电子工程前沿(英文)》 2017年 第18卷 第11期   页码 1744-1753 doi: 10.1631/FITEE.1601322

摘要: 针对软件缺陷预测中不同特征与类别的相关性差异,本文提出一种基于相似性度量(similarity measure, SM)的特征选择方法。

关键词: 软件缺陷预测;特征选择;相似性度量;特征权重;特征排序列表    

频率连接:基于数据划分的一种高效字符串相似性连接算法 Article

Ji-zhou LUO, Sheng-fei SHI, Hong-zhi WANG, Jian-zhong LI

《信息与电子工程前沿(英文)》 2017年 第18卷 第10期   页码 1499-1510 doi: 10.1631/FITEE.1601347

摘要: 字符串相似性连接(string similarity join, SSJ)在很多应用中,特别是在需要找出重复对象的应用中发挥着关键作用。本文关注基于编辑距离的字符串相似性连接。

关键词: 字符串相似性连接;编辑距离;过滤再细化;数据划分;组合频率向量    

改进的软件模块化二元相似度测量 Article

Rashid NASEEM, Mustafa BinMat DERIS, Onaiza MAQBOOL, Jing-peng LI, Sara SHAHZAD, Habib SHAH

《信息与电子工程前沿(英文)》 2017年 第18卷 第8期   页码 1082-1107 doi: 10.1631/FITEE.1500373

摘要: 目的:各种各样的二元相似度测量在聚类方法中被用来确定数据中的相似实体的同类组。这些相似度测量大多数仅基于特征的存在或缺失。二元相似度测量在软件模块化中亦能与不同的聚类方法一起用于提高软件系统的可理解性与可管理性。每种相似度测量都有其优势与不足,分别能使聚类结果优化或恶化。 创新点:本文强调了软件模块化中一些已有的著名的二元相似度测量的优势。此外,基于这些已有的相似度测量,新提出了几种改进的相似度测量。 方法:首先,介绍了一些软件模块化中已有的著名的二元相似度测量的优势。接着,提出了几种改进的新的相似度测量。结合具体例子,说明这些新方法整合了JC、JNM和RR这几种已有的二元相似度测量的优势。最后,通过实验比较新方法与已有方法的结果,验证所提新方法的有效性。 结论:实验结果表明相较于已有的相似度测量,本文所提出的新的二元相似度测量结果的可信度更高。这些新方法能减少任意决策的数量,增加聚类过程中聚类的数量。尽管这些新方法仅基于数据的二元特征向量表达,它们能被用来测试任何编程语言编写的软件系统。

关键词: 二元相似度测量;二元特征;测量组合;软件模块化    

Centrifuge model test and field measurement analysis for foundation pit with confined water

Chunlin DING , Xiaohong MENG ,

《结构与土木工程前沿(英文)》 2009年 第3卷 第3期   页码 299-304 doi: 10.1007/s11709-009-0035-0

摘要: The similarity law of centrifuge test was developed for the seepage field and stress field of a foundation pit with confined water by analyzing control equations, and a similarity index and a similarity coefficient of centrifuge test were obtained. Based on the deep foundation pit of the Huangxing Road Station of the Shanghai metro line M8, the deformation stability of the pit was tested. Finally, a comparative study was conducted on the test results of the pit deformation and the field measurement results. Comparison results show that the pit deformation regularity of the test is basically identical with that of the field measurement, and the difference in pit deformation between the test and the field measurement is within 50%. The centrifuge model test can effectively simulate the displacement response of the ground and retaining structure during dewatering and excavation for the pit with confined water, which provides a reliable basis for the design and construction of the pit with confined water.

关键词: foundation pit with confined water     centrifuge model test     seepage-stress coupling field     similarity relation     field measurement     deformation    

规则库自提取和简化的模糊系统

郭海湘,刘涛,诸克军

《中国工程科学》 2004年 第6卷 第10期   页码 52-58

摘要:

介绍了一种新的规则自提取和简化的模糊模型算法,该算法由3个步骤组成:首先,通过构造一个模糊软划分判别准则对输入输出空间进行模糊划分,得到最佳分类数,从而得到了最佳的规则数;其次,根据最佳规则数和神经网络来构造初始的模糊模型;第三,通过运用模糊相似分析法,可以得到计算2个模糊集相似度的方程,从而根据事先确定的阈值来合并相似的模糊集。这样就得到了一个既满足对精度的要求又简单且具有可解释性的模糊系统。最后,用该算法对我国全要素生产力进行了模糊规则的提取。

关键词: 相似分析法     模糊模型     模糊规则     模糊集     神经网络    

基于文本挖掘的“中国制造”地区行动计划分析

孔德婧   董放   李昭甫   屈贤明

《中国工程科学》 2017年 第19卷 第3期   页码 149-158 doi: 10.15302/J-SSCAE-2017.03.021

摘要:

对各省市自治区“中国制造”地区行动计划重点发展领域的一致性与重点发展子领域的差异性开展分析,是全面了解各省市自治区行动计划的基础。本文提出了一种基于文本挖掘包括中文分词、特征筛选、相似度计算的政策文件分析方法,根据该方法所得的结果对各省市自治区行动计划的一致性和差异性进行了分析。

关键词: 地区行动计划     文本挖掘     相似度计算    

从学科交叉角度看地学周期表——地球化学与冶金学的相似性与联系 Perspective

孙丰龙, 赵中伟

《工程(英文)》 2020年 第6卷 第6期   页码 707-715 doi: 10.1016/j.eng.2020.04.002

摘要:

2003年,Railsback概括了地球自然环境中大量的元素地质学信息,提出了“地学元素和离子周期表”。作为一门应用科学,冶金学与地球化学一样也关注矿物组成和元素行为。本文基于地球化学规律和诸多冶金学实例,梳理了地质学与冶金学之间的相似性和联系。例如,高离子势和低离子势的简单阳离子大多通过湿法冶金提取,而中等离子势的简单阳离子大多通过火法冶金提取。再如,地质学中的元素亲和性与冶金过程中元素的迁移行为紧密相关。具体来说,在火法冶金中,亲石元素倾向于聚集在熔渣中、亲铜/硫元素倾向于进入锍相、亲铁元素容易进入金属熔体、亲气元素倾向于进入气相。此外,在湿法冶金中,可以利用软硬酸碱原理(HSAB)来解释不同溶液中的沉淀与溶解过程,尤其是氟化物与氯化物的行为。本文提供了多个与地球化学原理相关的冶金学案例,论证了冶金学与地球化学之间的相似性和联系。

关键词: 冶金学     地球化学     元素周期表     离子势     元素亲和性    

海洋天然气水合物藏开采若干问题研究

白玉湖,李清平

《中国工程科学》 2011年 第13卷 第5期   页码 103-112

摘要:

文章阐述了在开采天然气水合物方面所取得的研究进展,包括天然气水合物开采模型及数值模拟,天然气水合物开采物理模拟相似准则,天然气水合物开采方法研究等。建立、完善了天然气水合物开采的数学模型,并以此为基础建立了降压开采水合物物理模拟相似准则。降压法开采单一水合物藏,在某些情况下开采能量不足会导致藏内结冰严重。对下伏气的天然气水合物藏而言,水合物能够提高产气量、延长稳产时间。结合降压和注热的优势提出了注温水-降压法联合开采方法,该方法具有稳产时间较长、稳产气速度高的特点。

关键词: 天然气水合物     降压法     注温水-降压联合开采方法     数学模型     相似准则    

标题 作者 时间 类型 操作

New approach for distinguishing the similarity of links

XIANG Jianyun, GE Maozhong, WANG Zhiping

期刊论文

Case modifying of high-speed cutting database based on CSP and similarity theory

Kejun XIANG, Zhanqiang LIU, Xing AI

期刊论文

Subspace transform induced robust similarity measure for facial images

Jian Zhang, Heng Zhang, Li-ling Bo, Hong-ran Li, Shuai Xu, Dong-qing Yuan,zhangjian@jou.edu.cn,zhangheng@jou.edu.cn

期刊论文

Modeling of oil near-infrared spectroscopy based on similarity and transfer learning algorithm

Yifei Wang, Kai Wang, Zhao Zhou, Wenli Du

期刊论文

Dynamic simulation of gas turbines via feature similarity-based transfer learning

Dengji ZHOU, Jiarui HAO, Dawen HUANG, Xingyun JIA, Huisheng ZHANG

期刊论文

Chemically reactive solute transfer in a boundary layer slip flow along a stretching cylinder

Swati Mukhopadhyay

期刊论文

A dynamic procedure based on the scale-similarity hypotheses for large-eddy simulation

ZHOU Bing, CUI Guixiang, CHEN Naixiang

期刊论文

一种面向软件缺陷预测的相似性度量特征选择方法

Qiao YU, Shu-juan JIANG, Rong-cun WANG, Hong-yang WANG

期刊论文

频率连接:基于数据划分的一种高效字符串相似性连接算法

Ji-zhou LUO, Sheng-fei SHI, Hong-zhi WANG, Jian-zhong LI

期刊论文

改进的软件模块化二元相似度测量

Rashid NASEEM, Mustafa BinMat DERIS, Onaiza MAQBOOL, Jing-peng LI, Sara SHAHZAD, Habib SHAH

期刊论文

Centrifuge model test and field measurement analysis for foundation pit with confined water

Chunlin DING , Xiaohong MENG ,

期刊论文

规则库自提取和简化的模糊系统

郭海湘,刘涛,诸克军

期刊论文

基于文本挖掘的“中国制造”地区行动计划分析

孔德婧   董放   李昭甫   屈贤明

期刊论文

从学科交叉角度看地学周期表——地球化学与冶金学的相似性与联系

孙丰龙, 赵中伟

期刊论文

海洋天然气水合物藏开采若干问题研究

白玉湖,李清平

期刊论文