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2019 16th International Conference on Service Systems and Service Management (ICSSSM)最新文献

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Clustering High-Dimensional Stock Data using Data Mining Approach 基于数据挖掘方法的高维库存数据聚类
Pub Date : 2019-07-01 DOI: 10.1109/ICSSSM.2019.8887724
Dhea Indriyanti, Arian Dhini
In recent year, stock investor in Indonesia increased rapidly, so it is required to do analysis about the stock that helps the investor in their investment plan. Clustering is beneficial to select the appropriate stock for investors. Unfortunately, stock prices keep varying from time to time. Consequently, it is not an easy work to select the stock for investment. In addition, stock price time series data are high dimensional data that influenced by many factors. In this study, high dimensional data are obtained by the time frame of each factor. Therefore, it is important to use a suitable technique to cluster high dimensional data. This paper presents High Dimensional Data Clustering (HDDC), a model-based clustering based on Gaussian Mixture Model, using the Expectation-Maximization (EM) algorithm. HDDC via EM algorithm gives a more robust result, and it possible to make an additional assumption. Moreover, this paper combines a high-dimensional clustering technique HDDC via EM algorithm and the most popular feature extraction technique Principal Component Analysis (PCA). This paper comparing methods of clustering technique HDDC and the combination between HDDC and PCA to know the most effective method which gives better result in clustering high-dimensional time series data. The 155 data features are reduced to 7 principal components using PCA analysis. Despite PCA has increased the time efficiency of building the model, clustering technique HDDC via EM algorithm enables to handle the high-dimensional data better than the combination with PCA.
近年来,印度尼西亚的股票投资者迅速增加,因此需要对股票进行分析,以帮助投资者制定投资计划。聚类有利于投资者选择合适的股票。不幸的是,股票价格不时变化。因此,选择股票进行投资并不是一件容易的事。此外,股票价格时间序列数据是受多种因素影响的高维数据。在本研究中,通过各因素的时间框架获得高维数据。因此,采用合适的技术对高维数据进行聚类是非常重要的。本文提出了一种基于高斯混合模型的高维数据聚类(HDDC)算法,该算法采用期望最大化(EM)算法。基于EM算法的HDDC具有更强的鲁棒性,并且可以进行额外的假设。此外,本文将基于EM算法的高维聚类技术HDDC与最流行的特征提取技术主成分分析(PCA)相结合。本文比较了HDDC聚类方法和HDDC与PCA相结合的聚类方法,找出了对高维时间序列数据聚类效果较好的最有效方法。利用主成分分析法将155个数据特征简化为7个主成分。尽管PCA提高了构建模型的时间效率,但是基于EM算法的聚类技术HDDC能够比结合PCA更好地处理高维数据。
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引用次数: 1
Optimal pricing strategy and economic effect of product sharing based on the analysis of B2C sharing platform 基于B2C共享平台的产品共享最优定价策略及经济效应分析
Pub Date : 2019-07-01 DOI: 10.1109/ICSSSM.2019.8887720
Xiaojiao Qiao, Dan Shi, Fangchao Xu
The emergence of sharing economy implies that consumers tend to pursue a product's value in use rather than its ownership. Therefore, the sharing economy is changing people's consumption habits and raising the new theoretical questions to operation management. Since the sharing economy has subverted the traditional industrial economic pattern, this paper studies consumers' decisions and the sharing platform's pricing strategies with a particular attention to the B2C sharing platform. To this end, this paper conducts two models to investigate the optimal pricing strategy and economic effect of product sharing. A basic model is developed to analyze the economic impact of the sharing economy by comparing with the traditional market, and then, an extended model is studied taking moral hazard of consumer under consideration. finally, numerical experiments are conducted to derive some managerial insights.
共享经济的出现意味着消费者倾向于追求产品的使用价值,而不是其所有权。因此,共享经济正在改变人们的消费习惯,并对运营管理提出新的理论问题。由于共享经济颠覆了传统的产业经济模式,本文以B2C共享平台为研究对象,对消费者的决策和共享平台的定价策略进行了研究。为此,本文通过两个模型研究了产品共享的最优定价策略和经济效应。通过与传统市场的比较,建立了一个基本模型来分析共享经济的经济影响,然后研究了一个考虑消费者道德风险的扩展模型。最后,进行了数值实验,以得出一些管理见解。
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引用次数: 1
Pricing strategy of dual-channel retailers based on Hotelling Model 基于Hotelling模型的双渠道零售商定价策略
Pub Date : 2019-07-01 DOI: 10.1109/ICSSSM.2019.8887685
Xu-dong Lin, Qiuting He, Ting Bu
E-commerce retailers and traditional retailers implement a new retail model of “online and offline” integration, which is the main direction for the future development and reform of the retail industry. In response to the complex and changing market demand, more and more retailers are beginning to transform into dual-channel retailers. However, in the process of transformation, the following problems will be encountered: how to set the price of products for online channels and offline channels; consumers' acceptance of online channels. In view of the above problems, this paper considers factors such as the degree of consumer acceptance of online channels and the cost of purchasing by consumers. This article studies the competitive situation of different types of retailers in the market, and makes a comparative analysis of the competitive equilibrium of unified pricing and differential pricing strategy when different types of retailers open dual channels. We got three discoveries. First, in the fierce market competition, dual-channel retailers have more competitive advantages than single-channel retailers. Second, for traditional retailers, they can gain more profits and competitive advantages by adopting differential pricing or uniform pricing strategy compared with before the transformation. Finally, the rational choice of e-commerce retailers is to use differential pricing in the transition process, or not to transform to ensure price advantage.
电子商务零售商与传统零售商实施“线上线下”融合的新零售模式,是未来零售业发展和改革的主要方向。为了应对复杂多变的市场需求,越来越多的零售商开始向双渠道零售商转型。但在转型过程中,会遇到以下问题:如何设定线上渠道和线下渠道的产品价格;消费者对线上渠道的接受程度。针对上述问题,本文考虑了消费者对网络渠道的接受程度、消费者购买成本等因素。本文研究了不同类型的零售商在市场上的竞争情况,对比分析了不同类型的零售商在打开双渠道时统一定价和差别定价策略的竞争均衡。我们有三个发现。首先,在激烈的市场竞争中,双渠道零售商比单渠道零售商更具竞争优势。第二,对于传统零售商来说,与转型前相比,采用差别定价或统一定价策略可以获得更多的利润和竞争优势。最后,电子商务零售商的理性选择是在转型过程中采用差别定价,或者不进行转型以确保价格优势。
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引用次数: 1
Optimization for Reverse Supply Chain with IERs and Competition 具有ier和竞争的逆向供应链优化
Pub Date : 2019-07-01 DOI: 10.1109/ICSSSM.2019.8887648
Gu Qiaolun, Gao Tiegang
In reverse supply chain with IERs (Inspection Error Rates) and competition, which consists of one remanufacturer and two competing collectors, the two collectors collect the used-products from used-product market competitively, and then they carry out inspection activity with IERs. The competition means supply amount competition. Considering the competition, we study the optimal price decisions for reverse supply chain members by game theory. We present the optimal collecting prices for two collectors and the optimal reclaiming price for remanufacturer. By numerical example, we analyze the impacts of competitions on the optimal results under supply amount competition. The research results show that: under supply amount competition, when one collector reduces IERs, the other one can get small increasing of profits even though he does not reduce his IERs; the remanufacturer can get more profits.
在由一个再制造商和两个竞争收集器组成的具有检验错误率和竞争的逆向供应链中,两个收集器从旧产品市场上竞争性地收集旧产品,然后利用检验错误率进行检验活动。竞争意味着供给量的竞争。考虑竞争,利用博弈论研究逆向供应链成员的最优价格决策。给出了两个回收商的最优回收价格和再制造商的最优回收价格。通过数值算例,分析了在供给量竞争情况下,竞争对最优结果的影响。研究结果表明:在供给量竞争条件下,当一个采集者减少供给量时,另一个采集者即使不减少供给量也能获得少量的利润增长;再制造商可以获得更多的利润。
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引用次数: 0
Labor Efficiency Evaluation in Chinese Coal Enterprise: Using the Hybrid DEA Model with Undesirable Output 中国煤炭企业劳动效率评价:基于不期望产出的混合DEA模型
Pub Date : 2019-07-01 DOI: 10.1109/ICSSSM.2019.8887693
Yiqing Wang, Youchang Lv, Peng Wu
Coal industry is an important pillar of China's economic development. The level of labor productivity has an important influence on coal mining. In this paper, Hybrid-DEA model is used to evaluate labor productivity and relative gas emission is taken as an undesirable output into the factors affecting labor productivity. Based on the statistical data of a large coal enterprise in China from 2015 to 2017, this paper makes an empirical analysis of the labor productivity in the production process of a coal enterprise from the micro level, which provides decision-making basis for the production management of a coal enterprise. The study shows that there is much room for improvement in the labor productivity in most of the mining areas of the coal enterprise, and the labor productivity in more than half of the mining areas continues to decline. Wilcoxon test method is adopted to analyze the comprehensive efficiency and key improvement indicators of labor productivity from the perspective of the mining area located in the urban or suburban areas. The results show that there are significant differences in comprehensive efficiency and production cost between the two groups. The comprehensive efficiency and key indexes of the suburban mining areas are better than those of the urban mining areas.
煤炭工业是中国经济发展的重要支柱。劳动生产率的高低对煤矿生产有着重要的影响。本文采用Hybrid-DEA模型对劳动生产率进行评价,将相对瓦斯排放量作为不良产出纳入影响劳动生产率的因素中。本文以中国某大型煤炭企业2015 - 2017年的统计数据为基础,从微观层面对煤炭企业生产过程中的劳动生产率进行实证分析,为煤炭企业的生产管理提供决策依据。研究表明,煤炭企业大部分矿区的劳动生产率还有很大的提升空间,有一半以上矿区的劳动生产率持续下降。采用Wilcoxon检验方法,从位于城市或郊区的矿区角度分析劳动生产率的综合效率和关键提升指标。结果表明,两组在综合效率和生产成本上存在显著差异。郊区矿区的综合效率和关键指标优于城市矿区。
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引用次数: 0
Design of Intelligent Logistics Drivers Evaluation System-Based on Entropy-AHP Method 基于熵-层次分析法的智能物流驾驶员评价系统设计
Pub Date : 2019-07-01 DOI: 10.1109/ICSSSM.2019.8887599
Xiuhui Wang, Xiaoyu Ma, Jing Fan, Qiongwei Ye
Based on the analysis of current research in performance evaluation of logistics and the practical operation mode of x company, this paper integrates all the factors that may affect performance evaluation of distribution and finally selects 11 indicators to make a comprehensive performance evaluation of drivers. These indicators are classified as four dimensions: total amount of work, transportation quality, service level and execution. Entropy weight method and analytic hierarchy process (AHP) are adopted to determine the comprehensive weight of each indicator, which is also enriched by the introduction of region factor. Besides, the drivers' individual relative progress factor is added into this evaluation model to better measure their efforts. In the empirical analysis of x company, the rationality and performability of the model are tested by comparing with the previous performance evaluation result. The result showed that this improved model could fully reflect the performance of logistics drivers and make effective distinctions between them. Also, this model can provide a basis for subsequent salary assessment and task allocation priority. What's more, it has practical significance for encouraging drivers to carry out tasks obeying the algorithm instructions.
本文在分析当前物流绩效评价研究现状的基础上,结合x公司的实际运营模式,将可能影响配送绩效评价的所有因素进行整合,最终选取11个指标对驱动因素进行综合绩效评价。这些指标分为四个方面:总工作量、运输质量、服务水平和执行。采用熵权法和层次分析法确定各指标的综合权重,并引入区域因子丰富了权重。此外,在评价模型中加入了驾驶员个人的相对进步因子,以更好地衡量驾驶员的努力程度。在对x公司的实证分析中,通过与以往绩效评价结果的对比,检验了模型的合理性和可执行性。结果表明,改进后的模型能够充分反映物流司机的绩效,并对物流司机进行有效区分。同时,该模型可以为后续的薪酬考核和任务分配优先级提供依据。更重要的是,这对于鼓励驾驶员按照算法指令执行任务具有现实意义。
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引用次数: 2
Industry Innovation Efficiency and its Influencing Factors: Evidence from Zhongguancun Science Park 产业创新效率及其影响因素——以中关村科技园区为例
Pub Date : 2019-07-01 DOI: 10.1109/ICSSSM.2019.8887614
Guoquan Xu, X. Du, Zhongyuan Yu, Lei Guan, J. Yi
Given the importance of innovation in economic development, this paper intends to analyze the impacts of multiple factors on innovation efficiency in Zhongguancun Science Park. A two-stage analysis process is implemented. First, data envelopment analysis (DEA) is applied with several inputs and outputs relating to innovation activities. In the second stage, we regressed the efficiency scores from the first stage on the variables of interest. Results show that technological absorptive ability of an industry, external R&D funding by financial organizations and governments, and R&D cooperation among enterprises all positively and significantly affect industry innovation. Besides, it needs to encourage R&D funding by financial organizations as well as control the governmental R&D funding to an appropriate level.
鉴于创新在经济发展中的重要性,本文拟分析多种因素对中关村科技园区创新效率的影响。实现了一个两阶段的分析过程。首先,将数据包络分析(DEA)应用于与创新活动相关的几个输入和输出。在第二阶段,我们从第一阶段对感兴趣的变量回归效率得分。结果表明,产业的技术吸收能力、金融机构和政府的外部研发投入以及企业间的研发合作对产业创新均有显著的正向影响。鼓励金融机构的研发投入,将政府的研发投入控制在适当的水平。
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引用次数: 0
Design of Semi-Compact City Medical Association Information Sharing Sustainable Operation Mechanism Based on Subscription Plan 基于订阅计划的半紧凑型城市医学会信息共享可持续运行机制设计
Pub Date : 2019-07-01 DOI: 10.1109/ICSSSM.2019.8887658
L. Zhang, Haiyan Wang, Siwen Liu, Shifu Pan
Semi-compact city medical association consists of information sharing platform operator, tertiary hospitals, and community hospitals. To solve the sustainable operation problem without government funding, the platform operator provides two subscription plans: paying annually and paying per service, which integrate the value-added business benefit distribution mechanism and consider grading diagnosis and treatment. To optimize the subscription plan and investigate the decision of hospitals, the optimization theory and Differential Evolution algorithm is employed. The research shows that the introduction of subscription plans can achieve the sustainable operation of semi-compact city medical association; regulate the price of value-added medical service can promote the willingness of community hospitals and platform operator revenue. However, increase the proportion of platform operator in value-added service will reduce the sustainability of semi-compact city medical association.
半紧凑型城市医学会由信息共享平台运营商、三级医院、社区医院组成。为解决无政府资助的可持续运营问题,平台运营方提供了按年付费和按次付费两种订阅方案,整合了增值业务利益分配机制,并考虑分级诊疗。采用最优化理论和差分进化算法对医院的订阅方案进行优化和决策研究。研究表明,引入订阅计划可以实现半紧凑型城市医学会的可持续运营;规范医疗增值服务价格可以促进社区医院的意愿和平台运营商的收益。然而,增加平台运营商在增值服务中的比例将降低半紧凑型城市医疗协会的可持续性。
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引用次数: 0
A Process Model of Knowledge Self-Creation in Professional Work 专业工作中知识自我创造的过程模型
Pub Date : 2019-07-01 DOI: 10.1109/ICSSSM.2019.8887708
Nobuhiko Seki, Y. Kohda
In the movement of microfoundations, in order to understand a performance at an organizational level, researchers must focus on individuals and think that it is necessary to understand them in terms of basic behaviors, characteristics such as interactions, etc. This paper proposes a lens to view knowledge creation processes, which are individual centric, not organization centric, and tries to provide a concept model that can explain realities that cannot be grasped directly by the conventional organizational knowledge-creation theory.
在微基金会的运动中,为了理解组织层面的绩效,研究人员必须关注个体,并认为有必要从基本行为、互动等特征等方面了解个体。本文提出了一个以个人为中心而非以组织为中心的知识创造过程的视角,并试图提供一个概念模型来解释传统的组织知识创造理论无法直接把握的现实。
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引用次数: 0
The Study on the Impact of Trade Facilitation on China's Export to ASEAN Countries 贸易便利化对中国对东盟国家出口的影响研究
Pub Date : 2019-07-01 DOI: 10.1109/ICSSSM.2019.8887695
Jiachen Xie, Yu-lan Du
With the implementation of China-ASEAN Free Trade Area, trade has become an important part of the economic growth of both sides. On the one hand, with the promotion of WTO and other international organizations, traditional barriers to international trade have been weakened and trade growth has been promoted. On the other hand, the inconvenience and inefficiency of trade have gradually emerged, which has become a new barrier to trade. This paper studies the actual situation of ASEAN countries, calculates the Trade Facilitation Index of each country in recent years, and explores the impact of Trade Facilitation Index on China's exports by using the expanded gravity model.
随着中国-东盟自贸区的实施,贸易已成为双方经济增长的重要组成部分。一方面,在WTO等国际组织的推动下,传统的国际贸易壁垒被削弱,贸易增长得到了促进。另一方面,贸易的不便和低效率逐渐显现,成为新的贸易壁垒。本文研究了东盟各国的实际情况,计算了各国近年来的贸易便利化指数,并利用扩展重力模型探讨了贸易便利化指数对中国出口的影响。
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引用次数: 0
期刊
2019 16th International Conference on Service Systems and Service Management (ICSSSM)
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