Spectrum auction is an important approach of spectrum distribution in cognitive radio networks. However, a single secondary user(SU) probably can't afford the price of spectrum. Multiple SUs grouping together to p...Spectrum auction is an important approach of spectrum distribution in cognitive radio networks. However, a single secondary user(SU) probably can't afford the price of spectrum. Multiple SUs grouping together to participate in the auction as a whole is helpful to increase purchasing power. However, SUs could suffer from a new group cheating problem, i.e., parts of users conspire to manipulate the auction by submitting untruthful bids. Existing auction mechanisms were mainly designed to be strategy-proof only for individual user and can't deal with group cheating. In this paper, a novel spectrum auction mechanism called COSTAG(COst Sharing based Truthful Auction with Group-buying) is proposed to address the group cheating problem. COSTAG consists of a grouping rule to perform grouping and a payment rule to determine the market-clearing price in the spectrum auction. Different from single-echelon pricing approach employed in existing works, a multi-echelon pricing strategy is designed to increase the transaction rate and optimize social profit for the auction. Comprehensive theoretical analysis shows that COSTAG can satisfy the crucial economic robustness properties, both individual and group truthfulness. Simulations demonstrate that comparing with existing works, COSTAG can improve the system performance significantly.展开更多
工业数据由于技术故障和人为因素通常导致数据异常,现有基于约束的方法因约束阈值设置的过于宽松或严格会导致修复错误,基于统计的方法因平滑修复机制导致对时间步长较远的异常值修复准确度较低.针对上述问题,提出了基于奖励机制的最小...工业数据由于技术故障和人为因素通常导致数据异常,现有基于约束的方法因约束阈值设置的过于宽松或严格会导致修复错误,基于统计的方法因平滑修复机制导致对时间步长较远的异常值修复准确度较低.针对上述问题,提出了基于奖励机制的最小迭代修复和改进WGAN混合模型的时序数据修复方法.首先,在预处理阶段,保留异常数据,进行信息标注等处理,从而充分挖掘异常值与真实值之间的特征约束.其次,在噪声模块提出了近邻参数裁剪规则,用于修正最小迭代修复公式生成的噪声向量.将其传递至模拟分布模块的生成器中,同时设计了一个动态时间注意力网络层,用于提取时序特征权重并与门控循环单元串联组合捕捉不同步长的特征依赖,并引入递归多步预测原理共同提升模型的表达能力;在判别器中设计了Abnormal and Truth奖励机制和Weighted Mean Square Error损失函数共同反向优化生成器修复数据的细节和质量.最后,在公开数据集和真实数据集上的实验结果表明,该方法的修复准确度与模型稳定性显著优于现有方法.展开更多
As an emerging "human problem solving strategy", crowdsourcing has attracted much attention where requesters want to employ reliable workers to complete specific tasks. Task assignment is an important branch of crow...As an emerging "human problem solving strategy", crowdsourcing has attracted much attention where requesters want to employ reliable workers to complete specific tasks. Task assignment is an important branch of crowdsourcing. Most existing studies in crowdsourcing have not considered self-interested individuals' strategy. To guarantee truthfulness, auction has been regarded as a promising method to charge the requesters for the tasks completed and reward the workers for performing the tasks. In this study, an online task assignment scenario is considered where each worker has a set of experienced skills, whereas a specific task is budget-constrained and requires one or more skills. In this scenario, the crowdsourcing task assignment was modeled as a reverse auction where the requesters are buyers and the workers are sellers. Three incentive mechanisms, namely, Truthful Mechanism for Crawdsourcing-Vickrey-Clarke-Grove (TMC-VCG), TMC-Simple Task (ST) for a simple task case, and TMC-Complex Task (CT) for a complex task case are proposed. Here, a simple task case means that the requester asks for a single skill, and a complex task case means that the requester asks for multiple skills. The related properties of each of the three mechanisms are determined theoretically. Moreover, the truthfulness is verified, and other performances are evaluated by extensive simulations.展开更多
这是希瑟做任课老师的最后一个学期,学生们给她送了小礼物作为纪念。一个小男孩犹豫了,他在想办法让老师知道他有多在乎她。主题语境:日常生活篇幅:347词建议用时:7分钟。1 When it comes to gifts,we often say it's the thought t...这是希瑟做任课老师的最后一个学期,学生们给她送了小礼物作为纪念。一个小男孩犹豫了,他在想办法让老师知道他有多在乎她。主题语境:日常生活篇幅:347词建议用时:7分钟。1 When it comes to gifts,we often say it's the thought that counts.While this can be said humorously at times,Heather Benoit is here to remind us of the truth behind this sentiment.Over a decade ago,this teacher was given a crayon by one of her students.展开更多
With the rocketing progress of the Internet, it is easier for people to get information about the objects that they are interested in. However, this information usually has conflicts. In order to resolve conflicts and...With the rocketing progress of the Internet, it is easier for people to get information about the objects that they are interested in. However, this information usually has conflicts. In order to resolve conflicts and get the true information, truth discovery has been proposed and received widespread attention. Many algorithms have been proposed to adapt to different scenarios. This paper aims to investigate these algorithms and summarize them from the perspective of algorithm models and specific concepts. Some classic datasets and evaluation metrics are given in this paper. Some future directions for readers are also provided to better understand the field of truth discovery.展开更多
Air pollution has become a global concern for many years.Vehicular crowdsensing systems make it possible to monitor air quality at a fine granularity.To better utilize the sensory data with varying credibility,truth d...Air pollution has become a global concern for many years.Vehicular crowdsensing systems make it possible to monitor air quality at a fine granularity.To better utilize the sensory data with varying credibility,truth discovery frameworks are introduced.However,in urban cities,there is a significant difference in traffic volumes of streets or blocks,which leads to a data sparsity problem for truth discovery.Protecting the privacy of participant vehicles is also a crucial task.We first present a data masking-based privacy-preserving truth discovery framework,which incorporates spatial and temporal correlations to solve the sparsity problem.To further improve the truth discovery performance of the presented framework,an enhanced version is proposed with anonymous communication and data perturbation.Both frameworks are more lightweight than the existing cryptography-based methods.We also evaluate the work with simulations and fully discuss the performance and possible extensions.展开更多
There are errors in multi-source uncertain time series data.Truth discovery methods for time series data are effective in finding more accurate values,but some have limitations in their usability.To tackle this challe...There are errors in multi-source uncertain time series data.Truth discovery methods for time series data are effective in finding more accurate values,but some have limitations in their usability.To tackle this challenge,we propose a new and convenient truth discovery method to handle time series data.A more accurate sample is closer to the truth and,consequently,to other accurate samples.Because the mutual-confirm relationship between sensors is very similar to the mutual-quote relationship between web pages,we evaluate sensor reliability based on PageRank and then estimate the truth by sensor reliability.Therefore,this method does not rely on smoothness assumptions or prior knowledge of the data.Finally,we validate the effectiveness and efficiency of the proposed method on real-world and synthetic data sets,respectively.展开更多
The conception of truth-making,albeit in a rudimentary form,could already be discerned in the writings of G.E.Moore and E.Husserl in the early 1900s.A few years later it was more extensively exploited by William James...The conception of truth-making,albeit in a rudimentary form,could already be discerned in the writings of G.E.Moore and E.Husserl in the early 1900s.A few years later it was more extensively exploited by William James.It was Wittgenstein,however,who gave the concept a precise meaning.In 1913/1914 Wittgenstein advanced a theory of possible worlds,only one of which was real.Every proposition suggests a part of a possible world which does or does not correspond to parts of the real world.In the first case the proposition is true,in the second case false.Moreover,the part of the real world makes the sentence true.This part is a truth-maker,and the sentence is a truth-bearer.Surprisingly enough,Wittgenstein’s concept of truth-making had its family resemblance with William James’s conception of truth.In 1915 Wittgenstein stopped using the concept of truth-making-it was also not mentioned in the Tractatus.Unfortunately,Russell did not notice this and in 1918 he adopted the concept of truth-making.In the 1930s,it was used by some second generation analytic philosophers(Schlick,Stebbing,and Wisdom).However,it became rather popular among analytic philosophers only in the 1980s.展开更多
This paper discusses Master Tanxu’s Thought of Middle Way from three aspects:interpreting the Middle Way with the Tiantai Sect’s thought of“Three Truths as a Unity”(三諦圓融),discussing“the Truth of the First Mea...This paper discusses Master Tanxu’s Thought of Middle Way from three aspects:interpreting the Middle Way with the Tiantai Sect’s thought of“Three Truths as a Unity”(三諦圓融),discussing“the Truth of the First Meaning of the Middle Way”(中道第一義諦)from the relationship between“the One Mind”and the Middle Way,and discussing gradations of practice of the Middle Way.展开更多
国内围绕旅游发展权益分配的不公平和不公正现象已呈常态化。利益相关者之间权力结构失衡和调节保障机制缺位,愈益成为制约旅游目的地可持续发展的关键因素。旅游发展所引发的利益关系调整主要是在资本、政府与地方三者之间,旅游决策和...国内围绕旅游发展权益分配的不公平和不公正现象已呈常态化。利益相关者之间权力结构失衡和调节保障机制缺位,愈益成为制约旅游目的地可持续发展的关键因素。旅游发展所引发的利益关系调整主要是在资本、政府与地方三者之间,旅游决策和利益分配更多是在资本和权力主导下进行,地方社区往往处于被动、失语和边缘化状态。过往学者更多从公平交易(fare trade)、社区参与、社区赋权等概念角度关注地方在旅游发展中的失权问题,藉由向权力诉说真理(speak truth to power)为弱势群体发声,展开更多
一、环保纪录片的里程碑关于环保的纪录片多是欧美发达国家拍摄的,例如:《可爱的动物(Animals Are Beautiful People)》(1974,南非)、《野鸟世界(The Life of Birds)》(1998,英国)、《地球公民(Earthlings)》(2005,美国)、《地球脉动(Pl...一、环保纪录片的里程碑关于环保的纪录片多是欧美发达国家拍摄的,例如:《可爱的动物(Animals Are Beautiful People)》(1974,南非)、《野鸟世界(The Life of Birds)》(1998,英国)、《地球公民(Earthlings)》(2005,美国)、《地球脉动(Planet Earth)》(2006,英国)、《难以忽视的真相(An Inconvenient Truth)》(2006,美国)、《危险中的星球(Planet in Peril)》(2007,美国)、《自然界大事件(Nature’s Great Events)》(2009,英国)、《人类星球(Human Planet)》(2011,英国)、《家园(Home)》(2011,展开更多
William Wordsworth is one of the best known English poets in literary history. As an arch romanticist, Wordsworth is generally known as a poet of Nature, because he not only describes Nature and ordinary people who li...William Wordsworth is one of the best known English poets in literary history. As an arch romanticist, Wordsworth is generally known as a poet of Nature, because he not only describes Nature and ordinary people who live in close touch with her, but also discloses the truth about Nature. He contributes a lot to the world literature.展开更多
Ethos and logos of the Jain thought and practice (world view) is based on reality perceived by senses. Atheistic roots of Jain Dharm have nourished growth, maintained viability and vitality, and kept it relevant for...Ethos and logos of the Jain thought and practice (world view) is based on reality perceived by senses. Atheistic roots of Jain Dharm have nourished growth, maintained viability and vitality, and kept it relevant for over the last five millennia. Unlike Judeo-Christian-Islam or Brahminical faith, it does not rely on omniscient supreme or god. Its atheistic and anti-theistic thrust is generally known, yet its followers do not call themselves Nastik (non-believers). They emphasize action-consequence relations as guide for successful behaviors with ethical conduct. The basis of their arguments follows from the Jain logic (Saptbhangi Syad Nay) of evidence based inference with multiple orthogonal affirmed assertions (Jain 2011). It conserves information by acknowledging the remaining doubt in an inference. It does not assume binary complementation to force closure for deduction with incomplete knowledge which leads to self-reference and loss of information. This approach offers a rational and practical alternative to conundrum of western atheism even though its arguments are logical and consistent with available evidence. It also obviates need to extract religious morality from social mores. Objective truth and knowledge of established generalizations is necessary but not sufficient for subjective searches to shape desires and for what the future ought to be.展开更多
基金partially supported by the National Science Foundation of China (No. 61070211, No. 61003304, No 61501482 and No 61070201)Equipment research foundation (No.6140134040216)the Ph.D. Programs Foundation of Ministry of Education of China (No. 20114307120003)
文摘Spectrum auction is an important approach of spectrum distribution in cognitive radio networks. However, a single secondary user(SU) probably can't afford the price of spectrum. Multiple SUs grouping together to participate in the auction as a whole is helpful to increase purchasing power. However, SUs could suffer from a new group cheating problem, i.e., parts of users conspire to manipulate the auction by submitting untruthful bids. Existing auction mechanisms were mainly designed to be strategy-proof only for individual user and can't deal with group cheating. In this paper, a novel spectrum auction mechanism called COSTAG(COst Sharing based Truthful Auction with Group-buying) is proposed to address the group cheating problem. COSTAG consists of a grouping rule to perform grouping and a payment rule to determine the market-clearing price in the spectrum auction. Different from single-echelon pricing approach employed in existing works, a multi-echelon pricing strategy is designed to increase the transaction rate and optimize social profit for the auction. Comprehensive theoretical analysis shows that COSTAG can satisfy the crucial economic robustness properties, both individual and group truthfulness. Simulations demonstrate that comparing with existing works, COSTAG can improve the system performance significantly.
文摘工业数据由于技术故障和人为因素通常导致数据异常,现有基于约束的方法因约束阈值设置的过于宽松或严格会导致修复错误,基于统计的方法因平滑修复机制导致对时间步长较远的异常值修复准确度较低.针对上述问题,提出了基于奖励机制的最小迭代修复和改进WGAN混合模型的时序数据修复方法.首先,在预处理阶段,保留异常数据,进行信息标注等处理,从而充分挖掘异常值与真实值之间的特征约束.其次,在噪声模块提出了近邻参数裁剪规则,用于修正最小迭代修复公式生成的噪声向量.将其传递至模拟分布模块的生成器中,同时设计了一个动态时间注意力网络层,用于提取时序特征权重并与门控循环单元串联组合捕捉不同步长的特征依赖,并引入递归多步预测原理共同提升模型的表达能力;在判别器中设计了Abnormal and Truth奖励机制和Weighted Mean Square Error损失函数共同反向优化生成器修复数据的细节和质量.最后,在公开数据集和真实数据集上的实验结果表明,该方法的修复准确度与模型稳定性显著优于现有方法.
基金funded in part by the National Natural Science Foundation of China(Nos.61472344 and61611540347)Natural Science Foundation of Jiangsu Province(No.BK20150460)+2 种基金Six Talent Peaks Project in Jiangsu Province(No.2011-DZXX-032)Scientific Research Foundation of Graduate School of Jiangsu Province(No.KYLX16 1391)Open Project Foundation of Information Technology Research Base of Civil Aviation Administration of China(CAAC)(No.CAAC-ITRB-201604)
文摘As an emerging "human problem solving strategy", crowdsourcing has attracted much attention where requesters want to employ reliable workers to complete specific tasks. Task assignment is an important branch of crowdsourcing. Most existing studies in crowdsourcing have not considered self-interested individuals' strategy. To guarantee truthfulness, auction has been regarded as a promising method to charge the requesters for the tasks completed and reward the workers for performing the tasks. In this study, an online task assignment scenario is considered where each worker has a set of experienced skills, whereas a specific task is budget-constrained and requires one or more skills. In this scenario, the crowdsourcing task assignment was modeled as a reverse auction where the requesters are buyers and the workers are sellers. Three incentive mechanisms, namely, Truthful Mechanism for Crawdsourcing-Vickrey-Clarke-Grove (TMC-VCG), TMC-Simple Task (ST) for a simple task case, and TMC-Complex Task (CT) for a complex task case are proposed. Here, a simple task case means that the requester asks for a single skill, and a complex task case means that the requester asks for multiple skills. The related properties of each of the three mechanisms are determined theoretically. Moreover, the truthfulness is verified, and other performances are evaluated by extensive simulations.
文摘这是希瑟做任课老师的最后一个学期,学生们给她送了小礼物作为纪念。一个小男孩犹豫了,他在想办法让老师知道他有多在乎她。主题语境:日常生活篇幅:347词建议用时:7分钟。1 When it comes to gifts,we often say it's the thought that counts.While this can be said humorously at times,Heather Benoit is here to remind us of the truth behind this sentiment.Over a decade ago,this teacher was given a crayon by one of her students.
基金Fundamental Research Funds for the Central Universities,China (No. 22D111207)。
文摘With the rocketing progress of the Internet, it is easier for people to get information about the objects that they are interested in. However, this information usually has conflicts. In order to resolve conflicts and get the true information, truth discovery has been proposed and received widespread attention. Many algorithms have been proposed to adapt to different scenarios. This paper aims to investigate these algorithms and summarize them from the perspective of algorithm models and specific concepts. Some classic datasets and evaluation metrics are given in this paper. Some future directions for readers are also provided to better understand the field of truth discovery.
文摘Air pollution has become a global concern for many years.Vehicular crowdsensing systems make it possible to monitor air quality at a fine granularity.To better utilize the sensory data with varying credibility,truth discovery frameworks are introduced.However,in urban cities,there is a significant difference in traffic volumes of streets or blocks,which leads to a data sparsity problem for truth discovery.Protecting the privacy of participant vehicles is also a crucial task.We first present a data masking-based privacy-preserving truth discovery framework,which incorporates spatial and temporal correlations to solve the sparsity problem.To further improve the truth discovery performance of the presented framework,an enhanced version is proposed with anonymous communication and data perturbation.Both frameworks are more lightweight than the existing cryptography-based methods.We also evaluate the work with simulations and fully discuss the performance and possible extensions.
基金National Natural Science Foundation of China(No.62002131)Shuangchuang Ph.D Award(from World Prestigious Universities)of Jiangsu Province,China(No.JSSCBS20211179)。
文摘There are errors in multi-source uncertain time series data.Truth discovery methods for time series data are effective in finding more accurate values,but some have limitations in their usability.To tackle this challenge,we propose a new and convenient truth discovery method to handle time series data.A more accurate sample is closer to the truth and,consequently,to other accurate samples.Because the mutual-confirm relationship between sensors is very similar to the mutual-quote relationship between web pages,we evaluate sensor reliability based on PageRank and then estimate the truth by sensor reliability.Therefore,this method does not rely on smoothness assumptions or prior knowledge of the data.Finally,we validate the effectiveness and efficiency of the proposed method on real-world and synthetic data sets,respectively.
文摘The conception of truth-making,albeit in a rudimentary form,could already be discerned in the writings of G.E.Moore and E.Husserl in the early 1900s.A few years later it was more extensively exploited by William James.It was Wittgenstein,however,who gave the concept a precise meaning.In 1913/1914 Wittgenstein advanced a theory of possible worlds,only one of which was real.Every proposition suggests a part of a possible world which does or does not correspond to parts of the real world.In the first case the proposition is true,in the second case false.Moreover,the part of the real world makes the sentence true.This part is a truth-maker,and the sentence is a truth-bearer.Surprisingly enough,Wittgenstein’s concept of truth-making had its family resemblance with William James’s conception of truth.In 1915 Wittgenstein stopped using the concept of truth-making-it was also not mentioned in the Tractatus.Unfortunately,Russell did not notice this and in 1918 he adopted the concept of truth-making.In the 1930s,it was used by some second generation analytic philosophers(Schlick,Stebbing,and Wisdom).However,it became rather popular among analytic philosophers only in the 1980s.
基金国家社科基金一般项目-中国思想史上的中观学研究,Serial Number 20BZJ012辽宁省社会科学规划基金一般项目-中国古代中道哲学的时代价值研究,Serial Number L22BZX001+1 种基金辽宁大学本科教学改革研究项目-哲学专业本科生《宗教学纲要》课程教学改革初探,Serial Number JG2021PTXM0342023年度辽宁大学亚洲研究中心一般项目-中国古代中道哲学与人类命运共同体构建.
文摘This paper discusses Master Tanxu’s Thought of Middle Way from three aspects:interpreting the Middle Way with the Tiantai Sect’s thought of“Three Truths as a Unity”(三諦圓融),discussing“the Truth of the First Meaning of the Middle Way”(中道第一義諦)from the relationship between“the One Mind”and the Middle Way,and discussing gradations of practice of the Middle Way.
文摘国内围绕旅游发展权益分配的不公平和不公正现象已呈常态化。利益相关者之间权力结构失衡和调节保障机制缺位,愈益成为制约旅游目的地可持续发展的关键因素。旅游发展所引发的利益关系调整主要是在资本、政府与地方三者之间,旅游决策和利益分配更多是在资本和权力主导下进行,地方社区往往处于被动、失语和边缘化状态。过往学者更多从公平交易(fare trade)、社区参与、社区赋权等概念角度关注地方在旅游发展中的失权问题,藉由向权力诉说真理(speak truth to power)为弱势群体发声,
文摘一、环保纪录片的里程碑关于环保的纪录片多是欧美发达国家拍摄的,例如:《可爱的动物(Animals Are Beautiful People)》(1974,南非)、《野鸟世界(The Life of Birds)》(1998,英国)、《地球公民(Earthlings)》(2005,美国)、《地球脉动(Planet Earth)》(2006,英国)、《难以忽视的真相(An Inconvenient Truth)》(2006,美国)、《危险中的星球(Planet in Peril)》(2007,美国)、《自然界大事件(Nature’s Great Events)》(2009,英国)、《人类星球(Human Planet)》(2011,英国)、《家园(Home)》(2011,
文摘William Wordsworth is one of the best known English poets in literary history. As an arch romanticist, Wordsworth is generally known as a poet of Nature, because he not only describes Nature and ordinary people who live in close touch with her, but also discloses the truth about Nature. He contributes a lot to the world literature.
文摘Ethos and logos of the Jain thought and practice (world view) is based on reality perceived by senses. Atheistic roots of Jain Dharm have nourished growth, maintained viability and vitality, and kept it relevant for over the last five millennia. Unlike Judeo-Christian-Islam or Brahminical faith, it does not rely on omniscient supreme or god. Its atheistic and anti-theistic thrust is generally known, yet its followers do not call themselves Nastik (non-believers). They emphasize action-consequence relations as guide for successful behaviors with ethical conduct. The basis of their arguments follows from the Jain logic (Saptbhangi Syad Nay) of evidence based inference with multiple orthogonal affirmed assertions (Jain 2011). It conserves information by acknowledging the remaining doubt in an inference. It does not assume binary complementation to force closure for deduction with incomplete knowledge which leads to self-reference and loss of information. This approach offers a rational and practical alternative to conundrum of western atheism even though its arguments are logical and consistent with available evidence. It also obviates need to extract religious morality from social mores. Objective truth and knowledge of established generalizations is necessary but not sufficient for subjective searches to shape desires and for what the future ought to be.