检索结果-南通市图书馆

Deep Learning for Financial Time Series Prediction:A State-of-the-Art Review of Standalone and HybridModels

Computer Modeling in Engineering & Sciences 2024年第4期139卷 187-224页

作者： Weisi Chen Walayat Hussain Francesco Cauteruccio Xu Zhang school of Software Engineering Xiamen University of TechnologyXiamen361024China peter faber business school Australian Catholic UniversityNorth Sydney2060Australia Department of Information Engineering Polytechnic University of MarcheAncona60121Italy

Financial time series prediction,whether for classification or regression,has been a heated research topic over the last *** traditional machine learning algorithms have experienced mediocre results,deep learning has largely contributed to the elevation of the prediction ***,the most up-to-date review of advanced machine learning techniques for financial time series prediction is still lacking,making it challenging for finance domain experts and relevant practitioners to determine which model potentially performs better,what techniques and components are involved,and how themodel can be designed and *** review article provides an overview of techniques,components and frameworks for financial time series prediction,with an emphasis on state-of-the-art deep learning models in the literature from2015 to 2023,including standalonemodels like convolutional neural networks(CNN)that are capable of extracting spatial dependencies within data,and long short-term memory(LSTM)that is designed for handling temporal dependencies;and hybrid models integrating CNN,LSTM,attention mechanism(AM)and other *** illustration and comparison purposes,models proposed in recent studies are mapped to relevant elements of a generalized framework comprised of input,output,feature extraction,prediction,and related *** the state-of-the-artmodels,hybrid models like CNNLSTMand CNN-LSTM-AM in general have been reported superior in performance to stand-alone models like the CNN-only *** remaining challenges have been discussed,including non-friendliness for finance domain experts,delayed prediction,domain knowledge negligence,lack of standards,and inability of real-time and highfrequency *** principal contributions of this paper are to provide a one-stop guide for both academia and industry to review,compare and summarize technologies and recent advances in this area,to facilitate smooth and informed implementation,and t

关键词： Financial time series prediction convolutional neural network long short-term memory deep learning attention mechanism finance

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Efficient Algorithm for the k-Means Problem with Must-Link and Cannot-Link Constraints

引用

Tsinghua Science and Technology 2023年第6期28卷 1050-1062页

作者： Chaoqi Jia Longkun Guo Kewen Liao Zhigang Lu Faculty of Computer Science and Technology Qilu University of Technology(Shandong Academy of Sciences)Jinan 250353China HilstLab Peter Faber Business SchoolAustralian Catholic UniversitySydney 2060Australia Macquarie University Cyber Security Hub Macquarie UniversitySydney 2109Australia

Constrained clustering,such as k-means with instance-level Must-Link(ML)and Cannot-Link(CL)auxiliary information as the constraints,has been extensively studied recently,due to its broad applications in data science and *** some heuristic approaches,there has not been any algorithm providing a non-trivial approximation ratio to the constrained k-means *** address this issue,we propose an algorithm with a provable approximation ratio of O(logk)when only ML constraints are *** also empirically evaluate the performance of our algorithm on real-world datasets having artificial ML and disjoint CL *** experimental results show that our algorithm outperforms the existing greedy-based heuristic methods in clustering accuracy.

关键词： Constrained k-means Must-Link(ML)and Cannot-Link(CL)constraints approximation algorithm constrained clustering

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Big Data Knowledge Pricing Schemes for Knowledge Recipient Firms

引用

Computers, Materials & Continua 2021年第12期69卷 3275-3287页

作者： Chuanrong Wu Haotian Cui Zhi Lu Xiaoming Yang Mark E.McMurtrey school of Economy and Management Changsha University of Science&TechnologyChangshaChina peter B.Gustavson school of business University of VictoriaCanada College of business Administration University of NebraskaOmaha68182USA College of business University of Central Arkansas72035USA

Big data knowledge,such as customer demands and consumer preferences,is among the crucial external knowledge that firms need for new product development in the big data *** research has focused on the profit of big data knowledge providers rather than the profit and pricing schemes of knowledge *** research addresses this theoretical gap and uses theoretical and numerical analysis to compare the profitability of two pricing schemes commonly used by knowledge recipients:subscription pricing and pay-per-use *** find that:(1)the subscription price of big data knowledge has no effect on the optimal time of knowledge transaction in the same pricing scheme,but the usage ratio of the big data knowledge affects the optimal time of knowledge transaction,and the smaller the usage ratio of big data knowledge the earlier the big data knowledge transaction conducts;(2)big data knowledge with a higher update rate can bring greater profits to the firm both in subscription pricing scheme and pay-per-use pricing scheme;(3)a knowledge recipient will choose the knowledge that can bring a higher market share growth rate regardless of what price scheme it adopts,and firms can choose more efficient knowledge in the pay-per-use pricing scheme by adjusting the usage ratio of knowledge usage according to their economic *** model and findings in this paper can help knowledge recipient firms select optimal pricing method and enhance future new product development performance.

关键词： Big data knowledge knowledge transfer subscription pricing pay-per-use pricing new product development performance

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

源码处理场景下人工智能系统鲁棒性验证方法

引用

软件学报 2023年第9期34卷 4018-4036页

作者：杨焱景毛润丰谭睿沈海峰荣国平南京大学软件学院江苏南京210093 Discipline of Information Technology Peter Faber Business SchoolAustralian Catholic UniversitySydney NSW 2060Australia

人工智能(artificial intelligence, AI)技术的发展为源码处理场景下AI系统提供了强有力的支撑.相较于自然语言处理,源码在语义空间上具有特殊性,源码处理相关的机器学习任务通常采用抽象语法树、数据依赖图、控制流图等方式获取代码的... 详细信息

人工智能(artificial intelligence, AI)技术的发展为源码处理场景下AI系统提供了强有力的支撑.相较于自然语言处理,源码在语义空间上具有特殊性,源码处理相关的机器学习任务通常采用抽象语法树、数据依赖图、控制流图等方式获取代码的结构化信息并进行特征抽取.现有研究通过对源码结构的深入分析以及对分类器的灵活应用已经能够在实验场景下获得优秀的结果.然而,对于源码结构更为复杂的真实应用场景,多数源码处理相关的AI系统出现性能滑坡,难以在工业界落地,这引发了从业者对于AI系统鲁棒性的思考.由于基于AI技术开发的系统普遍是数据驱动的黑盒系统,直接衡量该类软件系统的鲁棒性存在困难.随着对抗攻击技术的兴起,在自然语言处理领域已有学者针对不同任务设计对抗攻击来验证模型的鲁棒性并进行大规模的实证研究.为了解决源码处理场景下AI系统在复杂代码场景下的不稳定性问题,提出一种鲁棒性验证方法 (robustness verification by Metropolis-Hastings attack method, RVMHM),首先使用基于抽象语法树的代码预处理工具提取模型的变量池,然后利用MHM源码攻击算法替换变量扰动模型的预测效果.通过干扰数据和模型交互过程,观察攻击前后的鲁棒性验证指标的变化量来衡量AI系统的鲁棒性.以漏洞预测作为基于源码处理的二分类典型场景为例,通过在3个开源项目的数据集上验证12组AI漏洞预测模型鲁棒性说明RVMHM方法针对源码处理场景下AI系统进行鲁棒性验证的有效性.

关键词：源码结构化分析源码对抗攻击 AI系统鲁棒性验证

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Political uncertainty,leadership and productivity

引用

Economic and Political Studies 2022年第3期10卷 314-326页

作者： Chunxia Jiang Yun Zhu business school University of AberdeenAberdeenUK The peter J.Tobin College of business St.John’s UniversityQueensNYUSA

We investigate the impact of political uncertainty in the context of the upper echelon *** provincial-level data of polit-ical leaders in China over the period 1995–2015,we take a two-step approach to first examine the impact of top leader teams’(TLTs)traits on productivity and,second,to test if such leadership effects vary with political *** find that TLTs’educa-tion,generally a driving force behind productivity,is less effective during the period of high political ***’work experi-ence positively contributes to productivity,which is strengthened under high political ***’career ambition leads to higher productivity,but such an effect attenuates when political uncertainty is ***,TLTs’political positions negatively con-tribute to productivity and the effect is barely affected by political uncertainty,suggesting a disconnection between political posi-tions and economic outcomes.

关键词： Political uncertainty leadership productivity

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Strategies for Construction of Majors in Universities with Different Characteristic Based on Social Needs

引用

Journal of Systems Science and Information 2019年第5期10卷 474-485页

作者： Xiuli TAN Zhongquan CHEN Xinyang LIU peter DEENEY Zhisong CHEN business school Yantai Nanshan UniversityYantai 265713China school of business Administration Northeastern UniversityShenyang 110819China business school Dublin City UniversityGlasnevin 7008002Ireland business school Deakin UniversityMelbourneVIC 3125Australia

We used the basic principles of game theory to investigate development strategies for standards of professional competence in universities in the same geographic area,under conditions of non-uniform distribution of social demand *** results revealed that,under various conditions in our model,different approaches for differential strategies were selected by university U2 compared with university ***,in the competition between U1 and U2,there is a differential strategy compression point of U2 to U1;When U2 universities choose the biggest differentiation strategy,university U1 also have differentiated strategy control *** decision-making of university U1 in relation to university U2 was based on the requirements of professional competence standards,according to the change of the social demand for professional competency standard,universities U2 will adopt the strategy of"no difference","maximum differentiation"and"comprehensive intermediate strategy",*** current results have theoretical implications for the selection of professional development and professional competence development strategies in asymmetric universities operating in the same geographic area.

关键词： heterogeneous preferences specialty construction game analysis

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

DevSecOps:DevOps下实现持续安全的实践探索

引用

软件学报 2021年第10期32卷 3014-3035页

作者：戴启铭毛润丰黄璜荣国平沈海峰邵栋计算机软件新技术国家重点实验室(南京大学) 江苏南京210023 南京大学软件学院江苏南京210093 Discipline of Information Technology Peter Faber Business SchoolAustralian Catholic UniversitySydney NSW 2060

国内外各大软件企业正广泛实施DevOps相关实践,以提高产品交付和部署频率.与此同时,面对日益严峻的网络安全环境,软件系统中的安全问题日益凸显.耗时的安全实践因为快速交付,在软件开发活动中难以得到有效贯彻.也正因如此,在开发和运维... 详细信息

国内外各大软件企业正广泛实施DevOps相关实践,以提高产品交付和部署频率.与此同时,面对日益严峻的网络安全环境,软件系统中的安全问题日益凸显.耗时的安全实践因为快速交付,在软件开发活动中难以得到有效贯彻.也正因如此,在开发和运维流程中有效集成安全控制手段,实现整个软件生命周期的持续安全,已成为各大企业向DevOps转型过程中亟需思考的问题.DevSecOps作为在DevOps下持续解决安全问题的有效方案,因此而受到学术界和工业界的广泛关注,并逐渐成为软件工程领域的研究重点.近年来,随着DevSecOps的研究和实践发展,人们对DevSecOps有了更全面的认识,也引入了更多安全实践.为此,从DevSecOps的背景、特征、实践、裨益和挑战这5个方面进行了归纳和总结,首次向国内软件工程社区全面介绍DevSecOps的核心内容,重点阐述了DevSecOps最新的理论研究和工业界实践现状,进而为从业者实际落地DevSecOps提供参考,也为研究者探索DevSecOps提供便利,并呼吁更多的研究者参与到DevSecOps的研究中来.

关键词： DevOps安全 DevSecOps 持续安全 DevSecOps实践

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Offshoring and Reshoring： The Roles of Incomplete Contracts and Relative Bargaining Power

引用

Frontiers of Economics in China-Selected Publications from Chinese Universities 2018年第1期13卷 32-51页

作者： Ngo Van Long Maxwell Tuuli Department of Economics McGill University Montreal Quebec H3A 2T7 Canada peter B. Gustavson school. of business University of Victoria Victoria BC V8P 5C2 Canada

This paper demonstrates that an increase in bargaining power of Northern firms relative to that of their Southern contractors can trigger reshoring if the North- South wage differential is moderate, such that only industries with a high share of unskilled labor find outsourcing profitable. However, such an increase in Northern bargaining power can increase offshoring if the wage differential is so high that even industries with a low share of unskilled labor also offshore.

关键词： incomplete contracts bargaining power offshoring reshoring

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Another look at social innovation:From community-For community

引用

International Journal of Innovation Studies 2022年第2期6卷 92-101页

作者： Lisa J.Daniel peter Jenner school of business and Creative Industries University of the Sunshine CoastFraser CoastQueensland4655Australia

Social innovation(SI)continues to raise interest among scholars and policymakers,as a potential panacea for social disenfranchisement and civic *** is troubling is diverse perspectives of SI abound,creating inconsistencies in methodological approaches which confound theory *** paper clarifies that discussion by considering the locus of initiation and locus of benefit as informing characteristics that differentiate grounded social innovation from other types of well-recognized socially beneficent *** notion of‘from community e for community’is presented to aid understanding of the unique nature of authentically grounded social *** paper is significant as it presents a practical approach to help researchers and practitioners consider where opportunities for targeted policy support,institutional involvement,and agency action can aid community development and wellbeing.

关键词： Social innovation Community markets Social change Community development

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The new industrial revolution and industrial upgrading in China:achievements and challenges

引用

Economic and Political Studies 2016年第2期4卷 187-209页

作者： Khairy Tourk peter Marsh Stuart school of business Illinois Institute of TechnologyChicagoILUSA Financial Times LondonUK

One recent development in the area of manufacturing is the New Industrial Revolution(NIR).This paper examines the contours shaping the NIR,and analyses the challenges facing China in its pursuit to achieve technological parity with advanced ***’s economic rise is strongly associated with its ascending the technology *** country is now the world’s *** the labourintensive strategy based on cheap labour has run up against its limits,policy makers have devised plans that focus on industrial upgrading,promote indigenous innovations and establish national *** way China would avoid the middle-income trap and eventually become an innovative powerhouse.

关键词： Chinese indigenous technology middle income trap new industrial revolution patents R&D quality technology transfer

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：