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可靠多模态学习综述 被引量:9
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作者 杨杨 詹德川 +1 位作者 姜远 熊辉 《软件学报》 EI CSCD 北大核心 2021年第4期1067-1081,共15页
近年来,多模态学习逐步成为机器学习、数据挖掘领域的研究热点之一,并成功地应用于诸多现实场景中,如跨媒介搜索、多语言处理、辅助信息点击率预估等.传统多模态学习方法通常利用模态间的一致性或互补性设计相应的损失函数或正则化项进... 近年来,多模态学习逐步成为机器学习、数据挖掘领域的研究热点之一,并成功地应用于诸多现实场景中,如跨媒介搜索、多语言处理、辅助信息点击率预估等.传统多模态学习方法通常利用模态间的一致性或互补性设计相应的损失函数或正则化项进行联合训练,进而提升单模态及集成的性能.而在开放环境下,受数据缺失及噪声等因素的影响,多模态数据呈现不均衡性.具体表现为单模态信息不充分或缺失,从而导致"模态表示强弱不一致""模态对齐关联不一致"两大挑战,而针对不均衡多模态数据直接利用传统的多模态方法甚至会退化单模态和集成的性能.针对这类问题,可靠多模态学习被提出并进行了广泛研究,系统地总结和分析了目前国内外学者针对可靠多模态学习取得的进展,并对未来研究可能面临的挑战进行展望. 展开更多
关键词 不均衡多模态数据 模态表示强弱不一致 模态对齐关联不一致 可靠多模态学习
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因地而异的气候变化健康影响需要因地而异的应对措施 被引量:3
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作者 蔡闻佳 张弛 +74 位作者 孙凯平 艾思奇 白玉琪 鲍俊哲 陈彬 程亮亮 崔学勤 戴瀚程 底骞 董文轩 窦德景 范维澄 范星 高仝 耿阳 关大博 郭亚菲 胡艺馨 华峻翊 黄存瑞 黄弘 黄建斌 蒋婷婷 焦珂笛 Gregor Kiesewetter Zbigniew Klimont Pete Lampard 李传玺 李奇玮 李湉湉 李瑞奇 林波荣 林华亮 刘欢 刘起勇 刘小波 刘昱甫 刘钊 刘志东 刘竹 楼书含 鲁晨曦 罗勇 马伟 Alice McGushin 牛彦麟 任超 任浙豪 阮增良 Wolfgang Schöpp 苏婧 屠滢 王杰 王琼 王雅琪 王宇 Nick Watts 肖淙曦 谢杨 熊辉 徐名芳 徐冰 许磊 杨军 杨廉平 俞乐 岳玉娟 张少辉 张仲宸 赵继尧 赵亮 赵梦真 赵哲 周景博 宫鹏 《科学通报》 EI CAS CSCD 北大核心 2021年第31期3925-3931,共7页
气候变化的趋势正在对全球的人群健康造成巨大的威胁,迫切需要各国密切协作,积极应对气候变化,为此《柳叶刀》(The Lancet)杂志成立了"柳叶刀健康与气候变化委员会"(以下简称柳叶刀委员会),评估气候变化对人群健康的影响,并... 气候变化的趋势正在对全球的人群健康造成巨大的威胁,迫切需要各国密切协作,积极应对气候变化,为此《柳叶刀》(The Lancet)杂志成立了"柳叶刀健康与气候变化委员会"(以下简称柳叶刀委员会),评估气候变化对人群健康的影响,并寻找保障人群健康的应对气候变化措施.柳叶刀委员会在2015年报告基础上,启动了"柳叶刀倒计时:追踪健康与气候变化进展"项目(以下简称柳叶刀倒计时)[1],每年在《柳叶刀》上发表全球应对气候变化和保护人群健康的最新进展. 展开更多
关键词 气候变化 人群健康 柳叶刀 倒计时 应对措施
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Time-sensitive supply chain disruption recovery and resource sharing incentive strategy 被引量:3
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作者 Hongguang Bo Yinglian Chen +2 位作者 Huanzhi Li Peng Han Lian Qi 《Journal of Management Science and Engineering》 2021年第2期165-176,共12页
Market demand is becoming increasingly time-sensitive in competitive environments.Hence,supply disruptions will have a more serious impact on the profits of supply chains.This study applies a Stackelberg competition b... Market demand is becoming increasingly time-sensitive in competitive environments.Hence,supply disruptions will have a more serious impact on the profits of supply chains.This study applies a Stackelberg competition between a single supplier and a single manufacturer in a time-sensitive supply chain in a cloud manufacturing environment.We aim to address the supplier’s production capacity recovery issues and the manufacturer’s incentive decision issues after supply disruption.We find that the supplier is in a weak position when the information is symmetrical.The manufacturer can encourage the supplier to shorten the recovery time by raising the unit wholesale price.When the supplier’s unit production cost remains unchanged but the unit wholesale price increases,the profit of the supplier first increases and then decreases.In addition,under the centralized decision-making setting,the optimal recovery time of the supplier is shorter and the optimal unit market price of the product is lower than that under decentralized decision-making.We further find that resource sharing can shorten the optimal recovery time,but it does not necessarily play an incentivizing role. 展开更多
关键词 Supply chain Time-sensitive Supply disruption Resource sharing
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Cluster Analysis in Data-Driven Management and Decisions 被引量:1
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作者 Leilei Sun Guoqing Chen +1 位作者 Hui Xiong Chonghui Guo 《Journal of Management Science and Engineering》 2017年第4期227-251,共25页
Clustering plays an important role in management and decision-making processes.This paper first discusses three types of cluster analysis methods-centroid-based,connectivity-based,and density-based.Then the challenges... Clustering plays an important role in management and decision-making processes.This paper first discusses three types of cluster analysis methods-centroid-based,connectivity-based,and density-based.Then the challenges to traditional clustering in new business environments are highlighted,with algorithmic extensions and innovative efforts for coping with data that is dynamic,large-scale,representative,non-convex,and consensus in nature.In addition,three application cases are illustrated,where clustering is incorporated into the overall solution in the contexts of management support,business of sharing economy,and healthcare decision assistance. 展开更多
关键词 Cluster analysis Clustering Data-driven MANAGEMENT Decision making
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BREAKING THE MONOLITH: STRATEGY, VARIETY, AND PERFORMANCE OF ENTERPRISE INFORMATION SYSTEMS
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作者 Yuanxun Gu Lian Qi Jian Wang 《Journal of Systems Science and Systems Engineering》 SCIE EI CSCD 2018年第6期727-770,共44页
This paper intends to understand the form of implementations of Enterprise Information Systems (EISs). EISs are usually provided as packaged software products. Due to the diversities of implementations, EISs are oft... This paper intends to understand the form of implementations of Enterprise Information Systems (EISs). EISs are usually provided as packaged software products. Due to the diversities of implementations, EISs are often characterized by their system architectures. A conceptual framework is proposed to delineate the diversity and dynamics of EIS implementations. This framework is constituted of three components, EIS strategy, variety, and process-level performance (SVP). In particular, the variety of implementations is defined by two constructs, application scope and application depth. A Partial Least Squares structural equation modeling approach is applied to test the hypotheses according to the survey data from 223 project reports of EIS implementations in China. The results show that the EIS strategy and variety can both affect the performance of the implemented EISs. Specifically, application depth has an important mediating effect on the relationship between EIS strategy and performance. EIS strategy and application depth are breakthrough points to improve the performance of the implemented EISs. These findings suggest that the variety plays a central and effective role in the analysis of EIS implementations. This SVP framework highlights the interconnections among its components and captures the form of EIS implementations. 展开更多
关键词 EIS strategy application scope application depth process-level performance
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MRO Configuration Management for Complex Products
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作者 Chunliu Zhou Lian Qi +1 位作者 Xiaobing Liu Hongguang Bo 《Journal of Systems Science and Systems Engineering》 SCIE EI CSCD 2022年第3期359-380,共22页
Configuration management(CM)is an effective method for data modeling and change management in product development,but the study of how it can be adapted for complex product maintenance,repair and overhaul(MRO)has thus... Configuration management(CM)is an effective method for data modeling and change management in product development,but the study of how it can be adapted for complex product maintenance,repair and overhaul(MRO)has thus far been superficial.Research propositions are put forward on the basis of a literature review and verified by a case of a high-speed train MRO company.The findings show that CM can be used in MRO data management with adjustments in its functions.First,MRO-CM planning considers both multistage service and single-stage service to keep data consistent and continuous.Second,MRO data integration with the design/production phase should be considered during configuration identification.Third,baselines and change rules are developed for change control.Finally,status accounting and auditing can be repeatedly used in MRO data management.A systematic MRO-CM framework is generated to assist MRO practitioners in understanding the relationships among different MRO-CM functions.This paper contributes to expanding the theory of CM in MRO for complex products and provides an effective method for managing MRO data from systematic engineering insights. 展开更多
关键词 Configuration management MRO Service data management case study
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The Pursuit of ROI
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作者 SHARAN JAGPAL 《China International Business》 2010年第2期42-43,共2页
关键词 投资回报 营销策略 营销决策 广告 金融
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