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Articles 7351 - 7380 of 8681
Full-Text Articles in Entire DC Network
Enhancing Recursive Supervised Learning Using Clustering And Combinatorial Optimization (Rsl-Cc), Kiruthika Ramanathan, Sheng Uei Guan
Enhancing Recursive Supervised Learning Using Clustering And Combinatorial Optimization (Rsl-Cc), Kiruthika Ramanathan, Sheng Uei Guan
Research Collection School Of Computing and Information Systems
The use of a team of weak learners to learn a dataset has been shown better than the use of one single strong learner. In fact, the idea is so successful that boosting, an algorithm combining several weak learners for supervised learning, has been considered to be one of the best off-the-shelf classifiers. However, some problems still remain, including determining the optimal number of weak learners and the overfitting of data. In an earlier work, we developed the RPHP algorithm which solves both these problems by using a combination of genetic algorithm, weak learner and pattern distributor. In this paper, …
Do Sages Have Emotions?, Alan Kam Leung Chan
Do Sages Have Emotions?, Alan Kam Leung Chan
Research Collection College of Integrative Studies
Contemporary discussions of Confucian philosophy may tend to privilege certain key ethical concepts such as “benevolence“ (ren 仁) and “filial piety” (xiao 孝), but in traditional China much of the Confucian hermeneutical and philosophical enterprise revolved around the figure of the ideal “sage” (shengren 聖 人 ). Virtues are neither abstract nor self-existing; they are seen to cohere and find profound expression in the being of the sage. In this context, “sagehood“ thus emerges as a critical concern in Confucian self-understanding. Can sagehood be attained? Can the “average person” (zhongren 中人), indeed, become like Confucius, the sage par excellence, who …
The Framing And Evaluation Of Multiple Hypotheses, Theodore J. Mock, Arnold Wright, Rajendra P. Srivastava, Hai Lu
The Framing And Evaluation Of Multiple Hypotheses, Theodore J. Mock, Arnold Wright, Rajendra P. Srivastava, Hai Lu
Research Collection School Of Accountancy
This study provides exploratory evidence on auditors’ framing and evaluation of hypotheses, identifies implications for improving audit decision-making and facilitates the interpretation of prior research. Prior studies usually assume hypotheses to be framed as mutually exclusive and exhaustive. However, both verbal protocol evidence and probability assessments reveal that in a realistic case most auditors frame the hypotheses as a non-mutually exclusive and exhaustive set of causes. Further, auditor probability assessments tend to reflect multiple causes. Finally, exploratory analyses indicate auditors have difficulty in updating assessments consistent with the perceived interrelationships between hypotheses.
Implications Of Transaction Costs For The Post-Earnings-Announcement Drift, Jeffrey Ng, Rodrigo Verdi, Tjomme Rusticus
Implications Of Transaction Costs For The Post-Earnings-Announcement Drift, Jeffrey Ng, Rodrigo Verdi, Tjomme Rusticus
Research Collection School Of Accountancy
This paper examines the effect of transaction costs on the post–earnings announcement drift (PEAD). Using standard market microstructure features we show that transaction costs constrain the informed trades that are necessary to incorporate earnings information into price. This implies weaker return responses at the time of the earnings announcement and higher subsequent returns drift for firms with higher transaction costs. Consistent with this prediction, we find that earnings response coefficients are lower for firms with higher transaction costs. Using portfolio analyses, we find that the profits of implementing the PEAD trading strategy are significantly reduced by transaction costs. In addition, …
Factors Affecting The Information Quality Of Personal Web Portfolios, P. Katerattanakul, Keng Siau
Factors Affecting The Information Quality Of Personal Web Portfolios, P. Katerattanakul, Keng Siau
Research Collection School Of Computing and Information Systems
Personal Web portfolios have become a popular information source and an effective method for individuals to present themselves to others in cyberspace. Thus, the quality of personal Web portfolios is critical and affects the perception that others have of the individuals. But how do we measure quality of personal Web portfolios? What are the important factors affecting quality of personal Web portfolios? This study presents the development of an instrument measuring factors affecting information quality of personal Web portfolios. The proposed instrument, based on the Information Quality framework, was refined and validated to assess its construct validity, convergent validity, and …
When You Have To Dump It, M. Thulasidas
When You Have To Dump It, M. Thulasidas
Research Collection School Of Computing and Information Systems
It makes sense to cut further losses and such containment efforts are routine events in most establishments.
Target Saving In An Overlapping Generations Model, Ashok S. Guha, Brishti Guha
Target Saving In An Overlapping Generations Model, Ashok S. Guha, Brishti Guha
Research Collection School Of Economics
We examine a model in which the utility function has been engineered so that it is optimal for consumers to aim for a fixed target level of retirement resources. In this case consumption displays excess sensitivity to current income as well as perfect old age insurance. In an overlapping generations model, this leads naturally to multiple and unstable equilibria. Under static expectations, it also leads to a well-defined dynamics, including possible historical traps, implosions involving ever-diminishing capital stock and ever-increasing interest rates, and the feasibility of optimal one-time interventions.
Two-Sample Estimation Of Poverty Rates For Disabled People: An Application To Tanzania, Tomoki Fujii
Two-Sample Estimation Of Poverty Rates For Disabled People: An Application To Tanzania, Tomoki Fujii
Research Collection School Of Economics
Estimating poverty measures for disabled people in developing countries is di cult, partly because relevant data are not available. We develop two methods to estimate poverty by the disability status of the household head. We extend the small-area estimation proposed by Elbers, Lanjouw and Lanjouw (2002, 2003) so that we can run a regression on head's disability status even when such information is unavailable in the survey. We do so by aggregation and by moment adjusted two sample instrumental variable estimation. Our results from Tanzania show that both methods work well, and that disability is indeed associated with poverty.
Education And Trade, Pao Li Chang, Fali Huang
Education And Trade, Pao Li Chang, Fali Huang
Research Collection School Of Economics
This paper examines the inherent link between a countryís education system and its comparative advantage in trade. It suggests that di§erences in education systems across countries are probably a stable equilibrium result that is compatible with and reinforced by trade patterns. In equilibrium, two distinct types of countries emerge, one that exports creativity-intensive products and has an education system encouraging diversity (as illustrated by the US), and the other one that exports high-quality manufactured products and has an education system promoting homogeneity in student quality (as illustrated by Japan). Our Öndings present a novel explanation for the coexistence of low …
Optimal Bandwidth Selection In Heteroskedasticity-Autocorrelation Robust Testing, Yixiao Sun, Peter C. B. Phillips, Sainan Jin
Optimal Bandwidth Selection In Heteroskedasticity-Autocorrelation Robust Testing, Yixiao Sun, Peter C. B. Phillips, Sainan Jin
Research Collection School Of Economics
This paper considers studentized tests in time series regressions with nonparametrically autocorrelated errors. The studentization is based on robust standard errors with truncation lag M = bT for some constant b ∈ (0, 1] and sample size T. It is shown that the nonstandard fixed-b limit distributions of such nonparametrically studentized tests provide more accurate approximations to the finite sample distributions than the standard small-b limit distribution. We further show that, for typical economic time series, the optimal bandwidth that minimizes a weighted average of type I and type II errors is larger by an order of magnitude than the …
Refined Inference On Long Memory In Realized Volatility, Peter C. B. Phillips, Offer Lieberman
Refined Inference On Long Memory In Realized Volatility, Peter C. B. Phillips, Offer Lieberman
Research Collection School Of Economics
There is an emerging consensus in empirical finance that realized volatility series typically display long range dependence with a memory parameter around 0.4 (Andersen et al., 2001; Martens et al., 2004). The present article provides some illustrative analysis of how long memory may arise from the accumulative process underlying realized volatility. The article also uses results in Lieberman and Phillips (2004, 2005) to refine statistical inference about by higher order theory. Standard asymptotic theory has an error rate for error rejection probabilities, and the theory used here refines the approximation to an error rate of. The new formula is independent …
Unit Root Model Selection, Peter C. B. Phillips
Unit Root Model Selection, Peter C. B. Phillips
Research Collection School Of Economics
Some limit properties for information based model selection criteria are given in the context of unit root evaluation and various assumptions about initial conditions. Allowing for a nonparametric short memory component, standard information criteria are shown to be weakly consistent for a unit root provided the penalty coefficient Cn?? and Cn/n?0 as n??. Strong consistency holds when Cn/(log logn)3?? under conventional assumptions on initial conditions and under a slightly stronger condition when initial conditions are infinitely distant in the unit root model. The limit distribution of the AIC criterion is obtained.
Settlement Agreements As Defences To Unjust Enrichment Claims, Hang Wu Tang
Settlement Agreements As Defences To Unjust Enrichment Claims, Hang Wu Tang
Research Collection Yong Pung How School Of Law
There is unanimity that where there is a contract of settlement, an unjust enrichment claim is barred. However, there is uncertainty in this area because it is sometimes quite difficult to determine whether a contract of settlement has been concluded between the parties. This essay will consider the various tests for determining the boundaries of a settlement contract. In the absence of an express settlement agreement, the argument made in this paper is that the most satisfactory and practical approach to deciding whether there is an implied settlement agreement is to focus on whether the payor was consciously aware of …
Columbia University/Vireo-Cityu/Irit Trecvid2008 High-Level Feature Extraction And Interactive Video Search, Shih-Fu Chang, Junfeng He, Yu-Gang Jiang, Elie El Khoury, Chong-Wah Ngo, Akira Yanagawa, Eric Zavesky
Columbia University/Vireo-Cityu/Irit Trecvid2008 High-Level Feature Extraction And Interactive Video Search, Shih-Fu Chang, Junfeng He, Yu-Gang Jiang, Elie El Khoury, Chong-Wah Ngo, Akira Yanagawa, Eric Zavesky
Research Collection School Of Computing and Information Systems
In this report, we present overview and comparative analysis of our HLF detection system, which achieves the top performance among all type-A submissions in 2008. We also describe preliminary evaluation of our video search system, CuZero, in the interactive search task.
Private Query On Encrypted Data In Multi-User Setting, Feng Bao, Robert H. Deng, Xuhua Ding, Yanjiang Yang
Private Query On Encrypted Data In Multi-User Setting, Feng Bao, Robert H. Deng, Xuhua Ding, Yanjiang Yang
Research Collection School Of Computing and Information Systems
Searchable encryption schemes allow users to perform keyword based searches on an encrypted database. Almost all existing such schemes only consider the scenario where a single user acts as both the data owner and the querier. However, most databases in practice do not just serve one user; instead, they support search and write operations by multiple users. In this paper, we systematically study searchable encryption in a practical multi-user setting. Our results include a set of security notions for multi-user searchable encryption as well as a construction which is provably secure under the newly introduced security notions.
Beyond The Torrens Mirror: A Framework Of The In Personam Exception To Indefeasibility, Hang Wu Tang
Beyond The Torrens Mirror: A Framework Of The In Personam Exception To Indefeasibility, Hang Wu Tang
Research Collection Yong Pung How School Of Law
One of the central tenets of the Torrens system is that the registered proprietor is conferred indefeasible title. Indefeasibility of title is subject to cm in personam exception. The content of the in personam exception to indefensibility has been a source of debute in many Torrens jurisdictions. The purpose of this article is to map out a theoretical structure to analyse the ambit of the in personam exception so as to provide a principled development of the law in this area. This article will also attempt to explain how this proposed theoretical structure of the in personam exception deals with …
Too Little Or Too Much? Untangling The Relationship Between Corporate Philanthropy And Corporate Financial Performance, Heli Wang, Jaepil Choi, Jiatao Li
Too Little Or Too Much? Untangling The Relationship Between Corporate Philanthropy And Corporate Financial Performance, Heli Wang, Jaepil Choi, Jiatao Li
Research Collection Lee Kong Chian School Of Business
What is the relationship between corporate philanthropy and corporate financial performance? Some scholars argue that corporate philanthropy facilitates stakeholder cooperation and helps secure access to critical resources controlled by those stakeholders, suggesting that corporate philanthropy should be positively associated with corporate financial performance. In contrast, other scholars take a negative stance, suggesting that corporate philanthropy diverts valuable corporate resources and tends to inhibit corporate financial performance. Existing empirical studies have not found conclusive evidence on the corporate philanthropy-financial performance relationship. Integrating and extending existing perspectives, this study develops the argument that the relationship between corporate philanthropy and financial performance is …
Harmful Help: The Costs Of Backing Up Behavior In Teams, Christopher M. Barnes, J. R. Hollenbeck, David Turley Wagner, D. S. Derue, J. D. Nahrgang, K. M. Schwind
Harmful Help: The Costs Of Backing Up Behavior In Teams, Christopher M. Barnes, J. R. Hollenbeck, David Turley Wagner, D. S. Derue, J. D. Nahrgang, K. M. Schwind
Research Collection Lee Kong Chian School Of Business
Prior research on backing-up behavior has indicated that it is beneficial to teams (C. O. L. H. Porter, 2005; C. O. L. H. Porter et al., 2003). This literature has focused on how backing-up behavior aids backup recipients in tasks in which workload is unevenly distributed among team members. The authors of the present study examined different contexts of workload distribution and found that, in addition to the initial benefits to backup recipients, there are initial and subsequent costs. Backing-up behavior leads backup providers to neglect their own taskwork, especially when workload is evenly distributed. Team members who receive high …
The Effect Of Rivals When Firms Emerge From Bankruptcy, Gary L. Caton, Jeffrey Donaldson, Jeremy Goh
The Effect Of Rivals When Firms Emerge From Bankruptcy, Gary L. Caton, Jeffrey Donaldson, Jeremy Goh
Research Collection Lee Kong Chian School Of Business
Studies on the announcement effects of bankruptcy filings have found that when a firm files for Chapter 11 bankruptcy protection its shareholders suffer significant losses. A recent paper extends these findings by investigating the announcement effect on rival companies, while another examines the equity performance of firms emerging from bankruptcy. We combine these two lines of inquiry by examining the effect on rivals when a firm emerges from the protection of Chapter 11. We find both significant negative stock market returns and significant negative revisions in analysts’ earnings forecasts for rivals of successfully reorganized companies.
Rationalising The Regime Of Compulsory Patent Licensing By The Essential Facilities Doctrine, Kung-Chung Liu
Rationalising The Regime Of Compulsory Patent Licensing By The Essential Facilities Doctrine, Kung-Chung Liu
Research Collection Yong Pung How School Of Law
Where intellectual property rights (IP) owned by dominant undertakings are indispensable and impossible for other market players to replicate or acquire, the refusal to grant license to use such IP may cause serious harm to vital public interests, such as the supply of life-saving drugs, of technology that protects the environment, the compliance with de jure or de facto industry standards and the preservation of competition in markets with network effects or strong need for compatibility and interoperability
Technology Strategy And China's Technology Capacity Building, Arnoud De Meyer
Technology Strategy And China's Technology Capacity Building, Arnoud De Meyer
Research Collection Lee Kong Chian School Of Business
China has the potential to become a major source of innovation for the world. The scientific investment is in place and rapidly growing. But in order to reap the benefits of this investment its organisations will have to become better at managing innovation. One of the key elements of innovation management is the determination and implementation of a sound technology strategy. The purpose of this paper is to offer a framework and a detailed overview of what it entails to develop and implement a technology strategy. The paper emphasizes the alignment of the strategy with the organisational competencies and the …
Civil Liabilities For False Or Misleading Statements Made By Listed Companies To The Securities Markets In Singapore, Wai Yee Wan
Civil Liabilities For False Or Misleading Statements Made By Listed Companies To The Securities Markets In Singapore, Wai Yee Wan
Research Collection Yong Pung How School Of Law
This article examines the scope and efficacy of the civil remedies available to investors against listed companies which have made false or misleading statements in the secondary securities market in Singapore, both at common law and the statutory compensation scheme under the Securities and Futures Act. It argues that there are a number of limitations faced by such investors in bringing claims founded in tort law against the listed companies. While the statutory compensation scheme attempts to improve the position of investors, there are a number of deficiencies in the scheme the most significant of which is the ceiling on …
Pre-Commencement Discovery And The Odex Litigation: Copyright Versus Confidentiality Or Is It Privacy?, Sze Shun, George Wei
Pre-Commencement Discovery And The Odex Litigation: Copyright Versus Confidentiality Or Is It Privacy?, Sze Shun, George Wei
Research Collection Yong Pung How School Of Law
This article examines whether internet service providers are under any duty to disclose the names of subscribers whose accounts can be shown to be associated with infringing activity. This question involves tension between the economic interests of copyright owners/licensees, the privacy interests of internet users and the economic interests of the internet service provider. This tension in turn raises age-old problems of balance and proportionality between privacy, confidentiality and other competing rights and freedoms as well as the interests of society at large. The article concludes by briefly touching on privacy areas from outside of copyright and the Internet: including …
Tobacco Control And The Role Of Litigation: A Survey Of Issues In Law, Policy, And Economics, Basil C. Bitas, Pedro B. Barros
Tobacco Control And The Role Of Litigation: A Survey Of Issues In Law, Policy, And Economics, Basil C. Bitas, Pedro B. Barros
Research Collection Yong Pung How School Of Law
No abstract provided.
Choice Of Law For Unjust Enrichment/Restitution And The Rome Ii Regulation, Adeline Chong
Choice Of Law For Unjust Enrichment/Restitution And The Rome Ii Regulation, Adeline Chong
Research Collection Yong Pung How School Of Law
After being considered as niche territory for a long period, conflicts of law and restitution has provided a fertile ground for exposition in recent times. Whilst some development on the jurisdictional front has occurred, choice of law has lagged behind somewhat as, in England at least, no one seemed to be quite sure what was or should be the choice of law rule for restitutionary claims. However, the Regulation of the European Parliament and of the Council on the law applicable to non-contractual obligations (commonly known as the Rome II Regulation) has now entered into force and will apply from …
Natural Justice: A Case For Uniform Rigour, Siyuan Chen, Lionel Leo
Natural Justice: A Case For Uniform Rigour, Siyuan Chen, Lionel Leo
Research Collection Yong Pung How School Of Law
This note considers if there is a discernible framework in which courts resolve alleged claims of breaches of natural justice. On the one hand, once it has been ascertained that the rules of natural justice apply, the court will look at all the circumstances of the case to determine if there has been any u nfairness. On the other hand, it has been suggested th even assuming the rules of natural justice apply, there can be varying degrees of rigour in which they are enforced, a sliding scale of sorts.
Creating Alternate In-Basket Forms Through Cloning: Some Preliminary Results, Filip Lievens, Frederik Anseel
Creating Alternate In-Basket Forms Through Cloning: Some Preliminary Results, Filip Lievens, Frederik Anseel
Research Collection Lee Kong Chian School Of Business
Research on constructing alternate forms of assessment center exercises is very scarce. This study examines the effectiveness of a cloning procedure (incident isomorphic approach) for developing alternate forms of a computerized in-basket. In this approach, original and alternate items are essentially similar (they are based on the same critical incident), while being superficially different (they are situated in a different context). Results showed there was no significant difference between the overall in-basket score across the alternate forms. In addition, these overall scores correlated .66, with projected estimates for the full in-basket approaching .80. Implications and limitations of the use of …
Self-Organizing Neural Architectures And Cooperative Learning In A Multiagent Environment, Dan Xiao, Ah-Hwee Tan
Self-Organizing Neural Architectures And Cooperative Learning In A Multiagent Environment, Dan Xiao, Ah-Hwee Tan
Research Collection School Of Computing and Information Systems
Temporal-Difference–Fusion Architecture for Learning, Cognition, and Navigation (TD-FALCON) is a generalization of adaptive resonance theory (a class of self-organizing neural networks) that incorporates TD methods for real-time reinforcement learning. In this paper, we investigate how a team of TD-FALCON networks may cooperate to learn and function in a dynamic multiagent environment based on minefield navigation and a predator/prey pursuit tasks. Experiments on the navigation task demonstrate that TD-FALCON agent teams are able to adapt and function well in a multiagent environment without an explicit mechanism of collaboration. In comparison, traditional Q-learning agents using gradient-descent-based feedforward neural networks, trained with the …
Japanese Corporate Governance: Structural Change And Financial Performance, Asli M. Colpan, Toru Yoshikawa, Takashi Hikino, Hiroaki Miyoshi
Japanese Corporate Governance: Structural Change And Financial Performance, Asli M. Colpan, Toru Yoshikawa, Takashi Hikino, Hiroaki Miyoshi
Research Collection Lee Kong Chian School Of Business
This paper analyzes institutional and legal changes related to corporate governance and their impact on financial performance in Japan since the second half of the 1990s. We attempt to address two issues systematically: (1) how much the governance reforms of Japanese firms transformed the conventional system of alliance capitalism and managerial control; and (2) what economic outcomes those governance changes have yielded. As the Commercial Code and other legal and institutional frameworks were revised, Japanese firms experienced shifts in terms of stock ownership, corporate control and managerial organizations. Our empirical results show that the influence of new ownership composition and …
Including Corporate Social Responsibility, Environmental Sustainaibility, And Ethics In Calibrating Mba Job Preferences, David B. Montgomery, Catherine A. Ramus
Including Corporate Social Responsibility, Environmental Sustainaibility, And Ethics In Calibrating Mba Job Preferences, David B. Montgomery, Catherine A. Ramus
Research Collection Lee Kong Chian School Of Business
It has long been understood by organizations and academics that the people make the place (Schneider, 1987). A quality workforce is an important source of competitive advantage, and organizational and financial success for firms (Capelli, 2000; Chapman, Uggerslev, Carroll, Piasentin, & Jones, 2005; Huselid, 1995; Pfeffer, 1994, 1998; Teece, 1998). Attracting talent is difficult for business organizations, and may become increasingly so in the years to come, as demographic and economic factors create a war for talent (Chapman, et al., 2005; Johnson, 2000; Michaels, Handfield-Jones, & Axelrod, 2001). Particularly salient in this war for talent is the ability to attract …