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基于DREAM算法的DSGE模型参数估计精度研究
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作者 罗琦 赵胜民 《统计与决策》 CSSCI 北大核心 2024年第2期46-51,共6页
文章将人工智能算法中的DREAM算法首次应用到动态随机一般均衡模型的参数估计中,并以动态随机一般均衡模型LS(2005)为例对该算法的估计精度进行了系统分析,研究结果表明:根据待估参数随机抽样序列的箱线图来看,由DREAM算法产生的待估参... 文章将人工智能算法中的DREAM算法首次应用到动态随机一般均衡模型的参数估计中,并以动态随机一般均衡模型LS(2005)为例对该算法的估计精度进行了系统分析,研究结果表明:根据待估参数随机抽样序列的箱线图来看,由DREAM算法产生的待估参数随机抽样序列的箱体长度均比RWMH和IMH算法产生的箱体长度要长,说明由DREAM算法产生的参数估计序列的分散程度比RWMH和IMH算法要大,表明了DREAM算法遍历参数空间范围更为广泛,算法逃逸局部最优值的能力更强。另外,从箱线图中的中位数数值来看,除了5个参数以外,由DREAM算法产生的参数估计序列的中位数相比RWMH和IMH算法,与真实数据生成过程更为接近,说明由DREAM算法产生的参数估计值大部分都集中在参数的真值附近。由于DREAM算法依据IQR统计方法除去无用链,故由DREAM算法产生的参数估计序列的异常值也明显降低,而RWMH算法产生的参数估计序列的异常值尤其多。从待估参数的90%最大后验密度可信区间来看,DREAM算法产生的待估参数90%最大后验密度可信区间除了3个参数以外,其余全部包含了真值,而传统的RWMH和IMH算法分别只有7个和1个区间包含了真值,表明DREAM算法的估计不确定性远小于传统的RWMH和IMH算法。最后,根据待估参数的无效因子来看,DREAM算法产生的待估参数序列与传统的RWMH和IMH算法相比,其相关性更弱,即无效因子数值更小,这一点进一步验证了DREAM算法遍历整个参数空间的能力更强。 展开更多
关键词 dream算法 DSGE模型 估计精度
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Classification of Sailboat Tell Tail Based on Deep Learning
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作者 CHANG Xiaofeng YU Jintao +3 位作者 GAO Ying DING Hongchen LIU Yulong YU Huaming 《Journal of Ocean University of China》 SCIE CAS CSCD 2024年第3期710-720,共11页
The tell tail is usually placed on the triangular sail to display the running state of the air flow on the sail surface.It is of great significance to make accurate judgement on the drift of the tell tail of the sailb... The tell tail is usually placed on the triangular sail to display the running state of the air flow on the sail surface.It is of great significance to make accurate judgement on the drift of the tell tail of the sailboat during sailing for the best sailing effect.Normally it is difficult for sailors to keep an eye for a long time on the tell sail for accurate judging its changes,affected by strong sunlight and visual fatigue.In this case,we adopt computer vision technology in hope of helping the sailors judge the changes of the tell tail in ease with ease.This paper proposes for the first time a method to classify sailboat tell tails based on deep learning and an expert guidance system,supported by a sailboat tell tail classification data set on the expert guidance system of interpreting the tell tails states in different sea wind conditions,including the feature extraction performance.Considering the expression capabilities that vary with the computational features in different visual tasks,the paper focuses on five tell tail computing features,which are recoded by an automatic encoder and classified by a SVM classifier.All experimental samples were randomly divided into five groups,and four groups were selected from each group as the training set to train the classifier.The remaining one group was used as the test set for testing.The highest resolution value of the ResNet network was 80.26%.To achieve better operational results on the basis of deep computing features obtained through the ResNet network in the experiments.The method can be used to assist the sailors in making better judgement about the tell tail changes during sailing. 展开更多
关键词 tell tail sailboat CLASSIFICATION deep learning
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Dreaming across Languages and Cultures
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作者 ZHOU LIN 《China Today》 2024年第11期64-66,共3页
From a Ph.D.student to a budding sinologist,a young Spanish woman explains her vision for more cultural exchanges between China and her country.DREAM of the Red Chamber,Cao Xueqin’s classic about the rise and decline... From a Ph.D.student to a budding sinologist,a young Spanish woman explains her vision for more cultural exchanges between China and her country.DREAM of the Red Chamber,Cao Xueqin’s classic about the rise and decline of a family that is also a portrayal of its contemporary Qing Dynasty(1644-1911),continues to inspire and influence long after it was published in the 18th century.Patricia Amate Núñez is a current acolyte. 展开更多
关键词 dream CONTINUE EXCHANGES
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Chinese Dolls Tell Chinese Stories
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作者 ZHAO YANG 《China Today》 2024年第11期68-71,共4页
Tang Yan,inheritor of the Beijing silk figurines craft,builds her own dreams and helps others realize theirs.FROM February 9-17 this year,nine festive activities centered on the Chinese Spring Festival,which included ... Tang Yan,inheritor of the Beijing silk figurines craft,builds her own dreams and helps others realize theirs.FROM February 9-17 this year,nine festive activities centered on the Chinese Spring Festival,which included art performances,intangible cultural heritage exhibitions,and tourism promotion,were staged one after another in Trafalgar Square in London,the Assembly Rooms in Edinburgh,and a museum in Ireland’s Dublin.Audiences were captivated by the charm of Chinese culture exhibited through the festive atmosphere of the Chinese Spring Festival.At the activities,Beijing silk figurines,known in China as juanren,attracted the attention of many people. 展开更多
关键词 Edinburgh DUBLIN dreamS
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Translation Studies from a Cross-Cultural Perspective:Reinventing Subjectivity-A Case Study of English Translation of A Dream of Red Mansions
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作者 YANG Yin-chuan YANG Zhan 《Journal of Literature and Art Studies》 2024年第4期279-283,共5页
The integration of cross-cultural inquiries into the realm of translation has given rise to a distinct subfield known as cross-cultural translation studies.This approach emphasizes the importance of delving into the c... The integration of cross-cultural inquiries into the realm of translation has given rise to a distinct subfield known as cross-cultural translation studies.This approach emphasizes the importance of delving into the cultural subtleties and the awareness of cultural subjectivity within the translation process.Central to this framework is the concept of reshaping cultural nuances and the subjectivity of culture.This paper introduces three principal translation strategies that emerge from a cross-cultural standpoint:the alienation translation strategy,the‘cannibalism’translation strategy,and the destructive translation strategy.Utilizing the English translation of“Dream of the Red Chamber”as a case study,the paper examines how cultural nuances and cultural subjectivity influence the selection of translation strategies and demonstrates the practical application of cross-cultural research within the translation sphere.Hence,the significance of cross-cultural translation studies lies in its capacity to offer a novel lens through which to view translation studies.It encourages a reevaluation of cultural nuances and subjectivity in translation,which is of profound practical importance for advancing the field of translation studies,enhancing cross-cultural communication,and facilitating the spread of Chinese discourse on the global stage. 展开更多
关键词 CROSS-CULTURAL translation strategies A dream of Red Mansions
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The Application of Embodied Cognitive Linguistics in the English Translation of Two-Part Allegorical Saying—An Analysis of Examples From A Dream of Red Mansions
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作者 HE Jiamei ZOU Jianling 《Sino-US English Teaching》 2024年第7期337-342,共6页
As a kind of widely circulated folk language,two-part allegorical saying(“xiehouyu”)carries the wisdom of the Chinese people and is characterized with humor and vivid imagery.Taking the two English translation versi... As a kind of widely circulated folk language,two-part allegorical saying(“xiehouyu”)carries the wisdom of the Chinese people and is characterized with humor and vivid imagery.Taking the two English translation versions of A Dream of Red Mansions as examples,this paper analyzes the English translation of two-part allegorical saying based on the core principle of Embodied Cognitive Linguistics(ECL),“Reality-Cognition-Language”,and explores how the English translation of two-part allegorical saying reflects the three dimensions of ECL. 展开更多
关键词 two-part allegorical saying A dream in Red Mansions Embodied Cognitive Linguistics TRANSLATION
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Living the Mechanical Dream
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作者 KEDIR ABDUREZAK NURIYE 《ChinAfrica》 2024年第3期56-56,共1页
Studying in China is not just about academics,it is also about connecting with communities and learning local culture.As a child,I was captivated by machines and their inner workings.I yearned to design contraptions t... Studying in China is not just about academics,it is also about connecting with communities and learning local culture.As a child,I was captivated by machines and their inner workings.I yearned to design contraptions that could solve real-world problems and improve people’s lives.So,when it came time to choose a university,I knew that mechanical engineering was the path for me. 展开更多
关键词 earned connecting dream
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Fascination For Planes Young Ghanaian pursues her aviation dream in China
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作者 GE LIJUN 《ChinAfrica》 2024年第5期54-55,共2页
Every morning at 7 o’clock,Rachael Amoah,a young woman from Ghana,prepares for a new day of challenges and innovations at a leading aerospace company in Shanghai’s Pudong New Area.In March last year,she completed he... Every morning at 7 o’clock,Rachael Amoah,a young woman from Ghana,prepares for a new day of challenges and innovations at a leading aerospace company in Shanghai’s Pudong New Area.In March last year,she completed her studies in the School of Aeronautics and Astronautics at Shanghai Jiao Tong University(SJTU),and fulfilled her ambition to work in this megalopolis. 展开更多
关键词 AVIATION dream pursue
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语篇视角下的初中英语词汇实践——以“Could you please tell me where the restrooms are?”一课为例
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作者 刘倩 《中学生英语》 2024年第12期23-24,共2页
英语是义务教育过程中的主力学科,是学生必须学习的科目之一。英语学科的核心是词汇,但仅仅背诵词汇是不够的,学生需要在语境中正确使用这些词汇。而语篇是词汇的真实运用场景,因此,以语篇为视角研究词汇实践对学生的英语学习至关重要。
关键词 PLEASE 初中英语词汇 义务教育 语篇视角 英语学科 tell 英语学习 运用场景
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面向高阶思维培育的DREAM教学模式及应用 被引量:1
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作者 刘涛 黄媛 +1 位作者 蒋燕妮 李轲 《空天预警研究学报》 CSCD 2023年第5期384-386,390,共4页
高阶思维是高阶能力的核心,集中体现了智能时代对人才素质的新要求.针对雷达系统课程中学员高阶思维培育难的问题,围绕“相关”或者“关联”这一高阶思维核心特征,提出了问题驱动的DREAM教学模式,给出了DREAM模式的实施过程.课堂实践表... 高阶思维是高阶能力的核心,集中体现了智能时代对人才素质的新要求.针对雷达系统课程中学员高阶思维培育难的问题,围绕“相关”或者“关联”这一高阶思维核心特征,提出了问题驱动的DREAM教学模式,给出了DREAM模式的实施过程.课堂实践表明,该模式能够有效提升学员的高阶思维能力. 展开更多
关键词 高阶思维 dream教学模式 雷达系统课程
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基于Dream Logic的CPU仿真设计与实践
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作者 李珍香 王家亮 《计算机教育》 2023年第9期192-200,共9页
针对计算机组成原理课程中的重要实验内容“CPU设计”中存在的一些难点问题,提出引入Dream Logic仿真工具,通过CPU总体设计及CPU整机模型机中的运算器设计、指令系统设计与微指令设计示例,阐述基于Dream Logic的硬件基本部件仿真设计和... 针对计算机组成原理课程中的重要实验内容“CPU设计”中存在的一些难点问题,提出引入Dream Logic仿真工具,通过CPU总体设计及CPU整机模型机中的运算器设计、指令系统设计与微指令设计示例,阐述基于Dream Logic的硬件基本部件仿真设计和软件设计方法,并结合MOV、ADD等汇编指令及计算机组成原理实验中的寄存器和算术运算实验,介绍对CPU模型机进行的实验测试,最后说明教学实践效果。 展开更多
关键词 CPU设计 dream Logic CPU仿真 计算机组成原理
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Fairlight Dream Constellation 数字录音编辑+混录系统
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《世界专业音响与灯光》 2004年第3期67-67,共1页
关键词 Fairlight公司 dream CONStellATION 数字录音编辑 混录系统
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Common Prosperity:Making a Dream a Reality
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作者 ROBERT WALKER 《China Today》 2023年第5期20-22,共3页
Attaining the goal of common prosperity will require everyone to contribute.The whole-process people’s democracy needs to be matched by whole-process social responsibility.
关键词 EVERYONE matched dream
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Inspiring Stories of Chinese Dream Chasers
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作者 ZHOU LIN 《China Today》 2023年第11期23-23,共1页
Chasing the Chinese Dream:Four Decades of Following China’s War on Poverty Author:William N.Brown Hardcover,224 pages Published by Springer Nature Singapore Pte Ltd.“China’s targeted poverty alleviation is the worl... Chasing the Chinese Dream:Four Decades of Following China’s War on Poverty Author:William N.Brown Hardcover,224 pages Published by Springer Nature Singapore Pte Ltd.“China’s targeted poverty alleviation is the world’s only way to help the poor and reach the goals of the 2030 Agenda for Sustain-able Development.”That’s the quote on the title page of Chasing the Chinese Dream:Four Decades of Following China’s War on Poverty,coming from UN Secretary-General Antonio Guterres. 展开更多
关键词 DEVELOPMENT CHASE dream
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When the Swedish Passion Embraces the Chinese Dream
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作者 ZHOU LIN 《China Today》 2023年第5期65-67,共3页
A Swedish dream chaser’s life adventure in Beijing.VZZT!Vzzt!It is 4 a.m.,and the vibration of his Amazfit smartwatch rouses Thomas Karlsson from his sleep.It is time to pledge the small sum of money he donates daily... A Swedish dream chaser’s life adventure in Beijing.VZZT!Vzzt!It is 4 a.m.,and the vibration of his Amazfit smartwatch rouses Thomas Karlsson from his sleep.It is time to pledge the small sum of money he donates daily to charity,then head out for his 6-km morning walk,followed by some last-minute lesson preparations before class which starts at 8 a.m. 展开更多
关键词 dream MONEY SWEDISH
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Teaching Intercultural Competence Using Critical Incident and Cultural Story Telling
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作者 LIU Sha 《Sino-US English Teaching》 2023年第3期101-105,共5页
Intercultural literacy is attached increasingly great importance in this interconnected world.People from diversified cultural backgrounds need to interact with each other for various purposes.Schools and organization... Intercultural literacy is attached increasingly great importance in this interconnected world.People from diversified cultural backgrounds need to interact with each other for various purposes.Schools and organizations offer courses to improve people’s intercultural competence.This paper examines two effective techniques to teach intercultural competence in the classroom setting:critical incident activity and cultural story telling.These two strategies can help achieve the desired objectives of Michael Byram’s intercultural communication model. 展开更多
关键词 intercultural communication intercultural teaching critical incidents cultural story telling
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The Thematic Function of Dream Description in My Platonic Sweetheart
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作者 MA Li 《Journal of Literature and Art Studies》 2023年第2期76-81,共6页
Mark Twain is one of the most famous writers of the nineteenth century,his works have a large number of descriptions of dreams,in Mark Twain’s short story My Platonic Sweetheart,the author describes a dream that cons... Mark Twain is one of the most famous writers of the nineteenth century,his works have a large number of descriptions of dreams,in Mark Twain’s short story My Platonic Sweetheart,the author describes a dream that constantly repeats itself in his life.The dream description in the novel is not only part of the narrative structure of the article,but also expresses the theme of the article,through the close reading of the text,taking dream description as the starting point,the author of this thesis analyzes the dream description in My Platonic Sweetheart,exploring the thematic role of dream description in the novel,and analyzing what the author wants to express and how the author expresses his spiritual pursuit through dream description. 展开更多
关键词 dream description signfier and signified ADULTHOOD CHILDHOOD
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My Dream
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作者 易雨程 张军(指导) 《疯狂英语(双语世界)》 2023年第1期74-75,共2页
Dreams are amazing and important.A dream is just like a light tower,which can light our way to the future.Follow your dream,follow your heart and you will be successful.Almost all the children have their own dreams.Me... Dreams are amazing and important.A dream is just like a light tower,which can light our way to the future.Follow your dream,follow your heart and you will be successful.Almost all the children have their own dreams.Me,too.When I was a small child,I had a lot of dreams,such as being a cook,a teacher and so on.When I was six,I watched the CCTV news for the f irst time.And I also met my idol that always inspires me. 展开更多
关键词 dreamS dream OWN
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My Dreams
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作者 沈一丁 张超(指导) 《中学生英语》 2023年第27期7-7,共1页
I have a pen friend in America.We often send e-mails to each other.While talking about the future,I tell him that I have two dreams.The first one is to be a reporter.If the Olympic Games or the Asian Games are held in... I have a pen friend in America.We often send e-mails to each other.While talking about the future,I tell him that I have two dreams.The first one is to be a reporter.If the Olympic Games or the Asian Games are held in my country again,I will report news about it in English.The second dream is to buy a new car. 展开更多
关键词 dreamS dream AMERICA
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My Dream
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作者 孙亚楠 李朝梅(指导) 《中学生英语》 2023年第17期7-7,共1页
My name is Sun Yanan.I am 13 years old.I am a middle school student.My favorite subjects are math and English.And I like all the subjects,for example,science and history.My hobbies are playing the violin and listening... My name is Sun Yanan.I am 13 years old.I am a middle school student.My favorite subjects are math and English.And I like all the subjects,for example,science and history.My hobbies are playing the violin and listening to the light music.I like playing table tennis. 展开更多
关键词 FAVORITE And dream
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