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2017 International Conference on Grey Systems and Intelligent Services (GSIS)最新文献

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Image watermarking algorithm based on grey relational analysis and singular value decomposition in wavelet domain 基于小波域灰色关联分析和奇异值分解的图像水印算法
Pub Date : 2017-08-01 DOI: 10.1109/GSIS.2017.8077676
Qiuping Wang, Junwen Ma, Xiaofeng Wang, Fengqun Zhao
An image watermarking algorithm based on grey relational analysis and singular value decomposition in wavelet domain is proposed. Firstly, the host image is processed with one-level of discrete wavelet transform. The low frequency coefficients LL1 can be obtained from mentioned operation, and LL1 is divided into non-overlapping blocks whose size is same as watermarking. Secondly, through the gained coefficients of each block and the given random sequence, grey relational degrees which are preserved as training sample are acquired for each block. The largest singular value which can be found from singular value decomposition for each block is preserved as training target. Thus total training samples and corresponding training targets are obtained. Then, The LS_SVR model can be obtained through the training study. Next, through feeding the trained LS-SVR with the training samples to estimate the largest singular values, watermarking bits are embedded for adjusting the largest singular values. Finally, the watermarking is extracted by the reversing steps, and the extraction algorithm belongs to non-blind watermarking because the original host image is necessary. Experimental results show that the proposed scheme not only possesses good imperceptibility, but also has fine robustness against common signal processing.
提出了一种基于小波域灰度关联分析和奇异值分解的图像水印算法。首先,对主图像进行一级离散小波变换处理;通过上述操作可以得到低频系数LL1,并将LL1分割成大小与水印相同的不重叠块。其次,通过获得的各块系数和给定的随机序列,获得各块作为训练样本保留的灰色关联度;保留各块奇异值分解得到的最大奇异值作为训练目标。从而得到总的训练样本和相应的训练目标。然后,通过训练学习得到LS_SVR模型。然后,将训练样本输入训练后的LS-SVR估计最大奇异值,嵌入水印位来调整最大奇异值;最后,通过反转步骤提取水印,由于需要原始主机图像,该提取算法属于非盲水印。实验结果表明,该方法不仅具有良好的不可感知性,而且对常见的信号处理具有良好的鲁棒性。
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引用次数: 3
Modelling and forecasting of Jiangsu's total electricity consumption using the novel grey multivariable model 基于灰色多变量模型的江苏省总用电量建模与预测
Pub Date : 2017-08-01 DOI: 10.1109/GSIS.2017.8077703
Yao-guo Dang, Song Ding, Kai Zhao
Electricity demand prediction plays an important role in the policy makings and plans for the governments, energy sector investors and other relevant stakeholders. Although there exist several forecasting techniques, selection of the most appropriate technique is of great importance. One of the forecasting techniques which has proved successful in prediction is GM(1, N). In order to clarify the interaction mechanism of driving variables and improve the accuracy of the model, a new model which is based on the development trend of multiple driving variables, abbreviated as TMGM (1, N), is proposed. Firstly, a new forecast model of the development trend of the driving variables is established in order to make better use of the interaction mechanism of the driving variables. On the basis of that, the new grey model TMGM (1, N) is constructed. Meanwhile, the solution to the model parameters are derived on the least square method. And the time response formula is solved by the convolution integral to make up the defects of the solving method of traditional model GM(1, N). Finally, a real application about the forecast of the total electricity consumption in Jiangsu Province is used to demonstrate the feasibility and practicability of the TMGM(1, N) model. The results indicate the superiority of TMGM(1, N) model when compared with GM(1, N) model and TGM(1, N) model.
电力需求预测在政府、能源部门投资者和其他相关利益相关者的政策制定和计划中发挥着重要作用。虽然存在多种预测技术,但选择最合适的预测技术非常重要。GM(1, N)是已被证明预测成功的预测技术之一。为了阐明驱动变量之间的相互作用机制,提高模型的准确性,提出了一种基于多驱动变量发展趋势的新模型,简称TMGM (1, N)。首先,为了更好地利用驱动变量之间的相互作用机制,建立了新的驱动变量发展趋势预测模型。在此基础上,构造了新的灰色模型TMGM (1, N)。同时,利用最小二乘法推导了模型参数的解。通过对时间响应公式进行卷积积分求解,弥补了传统模型GM(1, N)求解方法的不足。最后,通过对江苏省总用电量预测的实际应用,验证了TMGM(1, N)模型的可行性和实用性。结果表明,与GM(1, N)模型和TGM(1, N)模型相比,TMGM(1, N)模型具有优越性。
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引用次数: 4
Dynamic analysis of industry-university-research cooperation conflict based on interval grey number preference 基于区间灰数偏好的产学研合作冲突动态分析
Pub Date : 2017-08-01 DOI: 10.1109/GSIS.2017.8077664
Ying Zhu, Ye-qing Guan, Haiyan Xu
Conflict of interests in industry-university-research cooperation is the root cause impeding the achievement of cooperation. To provide a basis for decision makers involved in this conflict, dynamic method of conflict analysis could be effectively utilized. Due to the difficulty to obtain preferences of decision makers influenced by several uncertain factors, interval grey number is introduced to describe the uncertain preference in dynamic method of conflict analysis. A new probability of individual state transition is defined, and the dynamic method of conflict analysis based on interval grey number preference is proposed. Finally, an industry-university-research cooperation conflict with interval grey number preferences is analyzed by this new method, and the conflict evolution route is obtained.
产学研合作中的利益冲突是阻碍产学研合作取得成果的根本原因。为了给参与这一冲突的决策者提供依据,可以有效地利用冲突分析的动态方法。针对决策者的偏好受多种不确定因素影响难以获得的问题,在冲突分析的动态方法中引入区间灰数来描述不确定偏好。定义了一个新的个体状态转移概率,提出了基于区间灰数偏好的动态冲突分析方法。最后,利用该方法对具有区间灰数偏好的产学研合作冲突进行了分析,得到了冲突演化路径。
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引用次数: 0
Coordinating O2O fresh agricultural supply chain considering information asymmetry when disruption occurs offline 考虑线下中断时信息不对称的生鲜农产品O2O供应链协调
Pub Date : 2017-08-01 DOI: 10.1109/GSIS.2017.8077734
Leizhou Zhao, Qing Zhang
With an increasing number of fresh agricultural products flowing into O2O model, the managers of e-commerce companies are looking for investment opportunities to establish the distribution channels online and offline. Based on the fresh agricultural supply chain, time limitation and information asymmetry has been considered. In order to improve the experience in the offline store, detailer takes investment, which is based on the hypothesis that investment could bring more guests in a way. The research indicates that the increase of investment could improve the best sales volume and maximum of supply chain profits when influence parameter exceeds the threshold. And when influence parameter stays much lower, the increase of cost is superior to the increase of profits, resulting in the decrease of maximum of supply chain profits, which implies a worse chance to invest a lot.
随着越来越多的生鲜农产品进入O2O模式,电子商务公司的管理者正在寻找投资机会,建立线上和线下的分销渠道。基于生鲜农产品供应链,考虑了时间限制和信息不对称。为了改善线下商店的体验,细节商需要投资,这是基于投资可以在某种程度上带来更多客人的假设。研究表明,当影响参数超过阈值时,投资的增加可以提高供应链的最佳销售量和最大利润。当影响参数较低时,成本的增加大于利润的增加,导致供应链利润的最大值减小,这意味着大量投资的机会变差。
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引用次数: 0
Study on the incentive mechanism of crowdsourcing considering participator's fairness preference 考虑参与者公平偏好的众包激励机制研究
Pub Date : 2017-08-01 DOI: 10.1109/GSIS.2017.8077726
Yanfeng Chu, Huijuan Cao
The traditional principal-agent model is based purely on the self-interest of the agent. In this paper, the fairness preference is incorporated into the model, and the Crowdsourcing sponsors and the task participants are analyzed as a system. The fairness preference of task participants is considered to analyze the effect of fairness preference on benefit distribution. The study shows that the share coefficient and the fairness preference factor of the participants in the fixed-payers task are affected, and increasing the transparency of the information can increase the effort degree of the task participants and increase the profit of the enterprise.
传统的委托代理模型完全基于代理人的自身利益。本文将公平偏好纳入模型,将众包发起者和任务参与者作为一个系统进行分析。考虑任务参与者的公平偏好,分析公平偏好对利益分配的影响。研究表明,固定付款人任务参与者的份额系数和公平偏好因子受到影响,增加信息透明度可以提高任务参与者的努力程度,提高企业的利润。
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引用次数: 1
Analysis on the contribution rate of university education to China's manufacturing based on the grey system theory 基于灰色系统理论的大学教育对中国制造业贡献率分析
Pub Date : 2017-08-01 DOI: 10.1109/GSIS.2017.8077686
Wei-zhuo Sun, Xiang Yu
This paper examines the variation on the contribution rate of university education to economic growth of Chinese manufacturing from the year 2005 to 2014. We divided the period of economic growth of Chinese manufacturing into two stages; 2005–2010 and 2011–2014, and then calculated the contribution rates respectively. The results of both stages are then compared. Findings suggest, the contribution rate of university education to economic growth of Chinese manufacturing is on the rise during the year 2005–2014. This shows that the talent structure of Chinese manufacturing is reasonably increasing and China's traditional economic development pattern of manufacturing is transforming from extensive to intensive.
本文考察了2005 - 2014年中国制造业大学教育对经济增长贡献率的变化。我们将中国制造业的经济增长期划分为两个阶段;分别计算2005-2010年和2011-2014年的贡献率。然后比较两个阶段的结果。研究结果表明,2005-2014年间,大学教育对中国制造业经济增长的贡献率呈上升趋势。这说明中国制造业的人才结构正在合理增长,中国传统的制造业经济发展方式正在由粗放型向集约型转变。
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引用次数: 0
Grey relational analysis of factors affecting ipo pricing in China a-share market 中国a股市场ipo定价影响因素的灰色关联分析
Pub Date : 2017-08-01 DOI: 10.1109/GSIS.2017.8077674
Chui-yong Zheng, Jun Zhu
IPO (Initial Public Offerings) pricing is a systematic and complicated task that directly determines whether the capital market is able to function in a healthy way. As China's stock market goes through ups and downs, China Securities Regulatory Commission generally adopts a positive strategy. Therefore, to weaken the policy factors, 48 cases of IPO companies dated from January 2014 to February 2014 (before price guidance of 23x P/E ratio ceiling) are selected as samples and an approach of grey relational analysis is adopted to analyze the degree on which different factors are able to have an influence. The results show that in general, internal enterprise value factors are likely to play a more important role when compared with external environmental factors. More specifically, profitability, growth potential, operating efficiency, industry characteristics, solvency, capital scale and structure are factors that are more influencing on the offering price, while the market overview and individual stock overview are ones that play a less important role. Based on these results some policy suggestions with regard to IPO pricing are also offered.
首次公开募股(IPO)定价是一项系统而复杂的任务,它直接决定着资本市场能否健康运行。在中国股市大起大落的时候,证监会通常采取积极的策略。因此,为了弱化政策因素,选取2014年1月至2014年2月(23倍市盈率上限指导价出台前)48家IPO公司为样本,采用灰色关联分析方法分析不同因素的影响程度。结果表明,总体而言,企业内部价值因素可能比外部环境因素发挥更重要的作用。具体而言,盈利能力、成长性、经营效率、行业特征、偿付能力、资本规模和结构是影响发行价格的主要因素,而市场概况和个股概况对发行价格的影响较小。在此基础上,提出了有关IPO定价的政策建议。
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引用次数: 4
Research on stock price forecast based on gray relational analysis and ARMAX model 基于灰色关联分析和ARMAX模型的股票价格预测研究
Pub Date : 2017-08-01 DOI: 10.1109/GSIS.2017.8077689
Chui-yong Zheng, Jun Zhu
There are some uncertainties associated with the influencing factors in the stock price forecasting model. Main influencing factors of stock price are selected by gray relational analysis, and the main influencing factor was used as an exogenous variable to establish the ARMAX model to forecast the stock price. Taking PetroChina as an example to carry out case analysis, the result shows that the fitting between the stock price forecast and the actual value calculated by the ARMAX model is high. This paper effectively improves the accuracy of stock price forecasting while providing a valuable reference for investors.
在股票价格预测模型中,影响因素存在一定的不确定性。通过灰色关联分析选择股价的主要影响因素,并将主要影响因素作为外生变量,建立ARMAX模型对股价进行预测。以中国石油为例进行案例分析,结果表明,ARMAX模型计算出的股价预测值与实际值拟合度较高。本文有效地提高了股票价格预测的准确性,同时为投资者提供了有价值的参考。
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引用次数: 6
Evaluation of college curriculum's teaching effect in the context of flipped classrooms based on grey cluster model — Taking the course of film reviews in huangshan university as an example 基于灰色聚类模型的翻转课堂背景下高校课程教学效果评价——以黄山学院影评课为例
Pub Date : 2017-08-01 DOI: 10.1109/GSIS.2017.8077717
Ziyun Zhao, H. Zhan
In the context of flipped classrooms, the evaluation of college curriculum's teaching effect has been a hotspot in current education field. Aiming at the course characteristics of film reviews offered in Huangshan University, the paper establishes an evaluation index system from the angle of teaching output, and conducts an evaluation using grey cluster model. The results show that with the influence of flipped classrooms, the course of film reviews is positive on the cultivation of students' cooperative consciousness, while its effects to cultivate students' learning interest and improve students learning ability and performance are not obvious, which correspond to reality, verifying the method's effectiveness and practicability.
在翻转课堂的背景下,大学课程教学效果评价成为当前教育领域的研究热点。针对黄山学院影评课的课程特点,从教学产出的角度建立评价指标体系,并运用灰色聚类模型进行评价。结果表明,在翻转课堂的影响下,影评课对培养学生的合作意识是积极的,而对培养学生的学习兴趣、提高学生的学习能力和成绩的作用并不明显,这与实际情况相符合,验证了该方法的有效性和实用性。
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引用次数: 0
Patent Co-citation networks for high-tech industrial clusters — A case study of silicon valley high-tech industrial clusters 高新技术产业集群的专利共引网络——以硅谷高新技术产业集群为例
Pub Date : 2017-08-01 DOI: 10.1109/GSIS.2017.8077732
Weiwei Pan, Lirong Jian, Daao Wang, Tao Liu
As a global innovation capital and industrial cluster representative, Silicon Valley affects the whole world for its scientific and technological innovation. Patent co-citation can be used as information carrier to identify the core technology patents and evaluate technical similarities between enterprises in industrial clusters. In this paper, we carry out industrial clusters analysis of Silicon Valley from the perspective of patents co-citation. Based on the Derwent patent database, a patent co-citation network analysis is carried out for top 150 high-tech enterprises in Silicon Valley to identify the industrial clusters in that region from 2001 to 2017. Through the analysis of industrial clusters, we can see the emerging industry development and different industrial clusters in Silicon Valley, and discover the connections of companies between different high-tech industries.
硅谷作为全球创新之都和产业集群的代表,其科技创新影响着全球。专利共引可以作为信息载体,识别核心技术专利,评价产业集群内企业之间的技术相似性。本文从专利共引的角度对硅谷进行产业集群分析。基于Derwent专利数据库,对2001 - 2017年硅谷排名前150的高科技企业进行专利共引网络分析,以识别该地区的产业集群。通过对产业集群的分析,我们可以看到硅谷的新兴产业发展和不同的产业集群,发现不同高科技产业之间的公司联系。
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引用次数: 3
期刊
2017 International Conference on Grey Systems and Intelligent Services (GSIS)
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