Social and Behavioral Sciences Commons^™

Testing Additive Separability Of Error Term In Nonparametric Structural Models, Liangjun Su, Yundong Tu, Aman Ullah

Research Collection School Of Economics

This paper considers testing additive error structure in nonparametric structural models, against the alternative hypothesis that the random error term enters the nonparametric model non-additively. We propose a test statistic under a set of identification conditions considered by Hoderlein, Su and White (2012), which require the existence of a control variable such that the regressor is independent of the error term given the control variable. The test statistic is motivated from the observation that, under the additive error structure, the partial derivative of the nonparametric structural function with respect to the error term is one under identification. The asymptotic distribution …

A General Method For Third-Order Bias And Variance Corrections On A Nonlinear Estimator, Zhenlin Yang

Research Collection School Of Economics

Motivated by a recent study of Bao and Ullah (2007a) on finite sample properties of MLE in the pure SAR (spatial autoregressive) model, a general method for third-order bias and variance corrections on a nonlinear estimator is proposed based on stochastic expansion and bootstrap. Working with concentrated estimating equation simplifies greatly the high-order expansions for bias and variance; a simple bootstrap procedure overcomes a major difficulty in analytically evaluating expectations of various quantities in the expansions. The method is then studied in detail using a more general SAR model, with its effectiveness in correcting bias and improving inference fully demonstrated …

On Time-Varying Factor Models: Estimation And Testing, Liangjun Su, Xia Wang

Research Collection School Of Economics

Conventional factor models assume that factor loadings are fixed over a long horizon of time, which appears overly restrictive and unrealistic in applications. In this paper, we introduce a time-varying factor model where factor loadings are allowed to change smoothly over time. We propose a local version of the principal component method to estimate the latent factors and time-varying factor loadings simultaneously. We establish the limiting distributions of the estimated factors and factor loadings in the standard large N and large T framework. We also propose a BIC-type information criterion to determine the number of factors, which can be used …

A Bayesian Specification Test, Yong Li, Tao Zeng, Jun Yu

Research Collection School Of Economics

A Bayesian test statistic is proposed to assess the model specification after the model is estimated by Bayesian MCMC methods. The proposed approach does not require an alternative model to be specified and is applicable to a variety of models, including latent variable models, structural dynamic choice models, and dynamics stochastic general equilibrium (DSGE) models, for which frequentist methods are difficult to use. The properties of the test statistic are established and its implementation is discussed. The test is easy to use and the test statistic can be calculated from MCMC outputs even when there are latent variables. The method …

The Nine Pillars Of Productivity, Augustine H. H. Tan

Research Collection School Of Economics

The report in The Straits Times on April 30, "S'pore cannot count on global demand to drive economy" makes for sober reading.Quoting Deputy Prime Minister Tharman Shanmugaratnam, the report notes that inflows of foreign workers slowed from 80,000 in 2011 to 20,000 last year. Meanwhile, resident labour force growth is tapering off severely. Hence the conclusion of Mr Tharman that restructuring the domestic sector to achieve higher productivity would be essential. Upgrading skills and allowing more market forces to work in weeding out the less innovative and efficient firms would be the keys to achieving this objective.Prime Minister Lee Hsien …

Employment Duration And Match Quality Over The Business Cycle, Ismail Baydur, Toshihiko Mukoyama

Research Collection School Of Economics

This paper studies the cyclical behavior of employment duration using data from the National Longitudinal Survey of Youth 1979 cohort. We estimate a proportional hazard model with competing risks, distinguishing different types of separations. A higher unemployment rate at the start of an employment relationship increases the probability that the worker quits to take or look for another job, but it decreases the probability that the firm fires the worker. The net effect of these opposing forces on the overall duration of the employment is negative, but small, implying that match quality is weakly pro-cyclical. We also build a simple …

Efficient Reverse Top-K Boolean Spatial Keyword Queries On Road Networks, Yunjun Gao, Xu Qin, Baihua Zheng, Gang Chen

Research Collection School Of Computing and Information Systems

Reverse k nearest neighbor (RkNN) queries have a broad application base such as decision support, profile-based marketing, and resource allocation. Previous work on RkNN search does not take textual information into consideration or limits to the Euclidean space. In the real world, however, most spatial objects are associated with textual information and lie on road networks. In this paper, we introduce a new type of queries, namely, reverse top-k Boolean spatial keyword (RkBSK) retrieval, which assumes objects are on the road network and considers both spatial and textual information. Given a data set P on a road network and a …

Breaking The News: First Impressions Matter On Online News, Julio Reis, Fabr´Icio Benevenuto, Pedro Olmo, Raquel Prates, Haewoon Kwak, Jisun An

Research Collection School Of Computing and Information Systems

A growing number of people are changing the way they consume news, replacing the traditional physical newspapers and magazines by their virtual online versions or/and weblogs. The interactivity and immediacy present in online news are changing the way news are being produced and exposed by media corporations. News websites have to create effective strategies to catch people’s attention and attract their clicks. In this paper we investigate possible strategies used by online news corporations in the design of their news headlines. We analyze the content of 69,907 headlines produced by four major global media corporations during a minimum of eight …

Michael Wong Pakshong [Singapore, Managing Director Of Mas], Michael Wong Pakshong

Digital Narratives of Asia

Michael Wong Pakshong was the first Managing Director of the Monetary Authority of Singapore. He shares with DNA the challenges of building up a new institution in a newly independent country, as well as the obstacles he faced when the government's vision for MAS changed.

Freddie Aguilar [Philippines, Musician, Political Leader], Freddie Aguilar

Digital Narratives of Asia

Freddie Aguilar is not just a Filipino musical icon but a political icon. Influencing people through his music, Freddie shares his frank take on political leadership in the Philippines and what he thinks leaders should do to move the country forward.

Social Marketing: Delivering On Passion, Singapore Management University

Perspectives@SMU

Focus on your audience’s desire and motivations, and deliver your product’s unique proposition with every interaction on social media

How To Create Value Like Master Negotiators, Singapore Management University

Perspectives@SMU

Be thoroughly prepared but know when there is no deal

Advertising In The Digital Age, Singapore Management University

Perspectives@SMU

Algorithms, big data and real-time computing are revolutionising the advertising industry, but brands still need to be clear about their business objectives to maximise advertising returns

Comparison Of Altmetrics Across Multiple Disciplines: Psychology, History, And Linguistics, Tint Hla Hla Htoo, Jin-Cheon Na

Research Collection Library

Since their emergence in 2010, altmetrics as new indicators of research impact receive considerable attention from scientometricians and various other parties including librarians, who have long been providing citation analysis and bibliometric services in academic and research institutions. Despite their rapid popularity, the validity of altmetrics in research evaluation is not yet clear. One way of assessing a new metric for its suitability in research evaluation is to find out its correlation with an established source of evidence. This study investigates the correlation between altmetrics and citation count in Psychology, History and Linguistics disciplines. In addition, the study also explores …

Improve Space And Manpower Utilisation, Aldred Wen Yang Lau, Eileen Yi Lin Tan, Jo Xin Lee, Joshua Thiow Ern Lim, Shu Wei Lee, Adel Dimian, Yuyun Wirawati Ishak, Vincent Ong

Research Collection Library

From weeks 11 to 14, the [Li Ka Shing] Library sees a surge in the percentage of hogged seats to up to 31% of its capacity, which diverts manpower from its main operations to deal with both the problem and complaints from users that ensure. The team looked for a solution to decrease the percentage of hogged seats by creating a seat-hog free zone for users.

The Singapore Report: National Landscape, Current Challenges And Opportunities For Growth, Institute For Societal Leadership, Aji Paramartha, Shihui Khee, Regina Unson, Sai Hein

Institute of Societal Leadership Research Collection

Singapore has come a long way, since her beginnings as a sleepy fishing village and a tiny Malay settlement ruled by the Sultan of Johor. Sir Stamford Raffles first arrived in Singapore in 1819 and immediately recognised that its strategic location along the Straits of Malacca would be useful to the British in developing an alternative to challenge Dutch influence and monopoly in the region. During British colonial rule, Singapore developed into an important free port and trade city, an essential trait that continues to feature heavily in Singapore’s economic development to this day.

Catalyst Asia Issue 01, Institute For Societal Leadership

Catalyst Asia

STORIES FROM THE GROUND

Prototype, Test, Tweak, Repeat – Proximity Designs Lives Up To Its Name

More Than Just An Autism Centre

Khek Noi – The Land Without The Concept Of A Title Deed

Trash, Transformed.

This Professor Will Use Saltwater To Empower Asia’s Poor

Non-profit Initiative Gives Back ‘The Right To Learn’ To Underprivileged Children

Big Fish

Building Houses To Build Communities

Charity Hero Syed Azmi Inspires Community Projects Amongst The Youth

In For The Long Run

Looking To Understand, And Heal, After A Genocide

We Are All Human

IN THE HOT SEAT

Fast Tracking The Hunt For Time …

Customer Satisfaction Index Of Singapore 2014: Full Year Overview, Institute Of Service Excellence, Smu

Research Collection Institute of Service Excellence (2007-2024)

The Customer Satisfaction Index of Singapore (CSISG) computes customer satisfaction scores at the national, sector, sub-sector, and company levels. The CSISG serves as a quantitative benchmark of the quality of goods and services produced by the Singapore economy over time and across countries. The fourth quarter results mark the end of measurement for CSISG 2014. Singapore’s 2014 national score is computed using the data collected during these four quarters.

Data From: Improve Space And Manpower Utilisation, Aldred Wen Yang Lau, Eileen Yi Lin Tan, Jo Xin Lee, Joshua Thiow Ern Lim, Shu Wei Lee, Adel Fawzi Dimian, Yuyun Wirawati Ishak, Vincent Ong

SMU Research Data

The Excel file included the data collected on the space and manpower utilisation for the seat hogging problem in the [Li Ka Shing] Library over the period February to March 2015. The analysis done included, Cause and Effect, Failure Modes and Effects Analysis, Multiple Variables, Pugh Matrix, etc.

Poster abstract: From weeks 11 to 14, the [Li Ka Shing] Library sees a surge in the percentage of hogged seats to up to 31% of its capacity, which diverts manpower from its main operations to deal with both the problem and complaints from users that ensure. The team looked for a …

Hospital To Home: Interoperability In The Health Ecosystem, Francis Puno

Asian Management Insights

Mobile health solutions have created a revolution in the global healthcare ecosystem.

Audit Committees And Financial Reporting Quality In Singapore, Kwong Sin Leong, Jiwei Wang, Themin Suwardy, Yuanto Kusnadi

Research Collection School Of Accountancy

No abstract provided.

Using Support Vector Machine Ensembles For Target Audience Classification On Twitter, Siaw Ling Lo, Raymond Chiong, David Cornforth

Research Collection School Of Computing and Information Systems

The vast amount and diversity of the content shared on social media can pose a challenge for any business wanting to use it to identify potential customers. In this paper, our aim is to investigate the use of both unsupervised and supervised learning methods for target audience classification on Twitter with minimal annotation efforts. Topic domains were automatically discovered from contents shared by followers of an account owner using Twitter Latent Dirichlet Allocation (LDA). A Support Vector Machine (SVM) ensemble was then trained using contents from different account owners of the various topic domains identified by Twitter LDA. Experimental results …

Multi-Roles Affiliation Model For General User Profiling, Lizi Liao, Heyan Huang, Yashen Wang

Research Collection School Of Computing and Information Systems

Online social networks release user attributes, which is important for many applications. Due to the sparsity of such user attributes online, many works focus on profiling user attributes automatically. However, in order to profile a specific user attribute, an unique model is built and such model usually does not fit other profiling tasks. In our work, we design a novel, flexible general user profiling model which naturally models users’ friendships with user attributes. Experiments show that our method simultaneously profile multiple attributes with better performance.

The Basic Arithmetic Of Legislative Decisions, Michael Laver, Kenneth Benoit

Research Collection School of Social Sciences

Despite the huge number of possible seat distributions following a general election in a multiparty parliamentary democracy, there are far fewer classes of seat distribution sharing important strategic features. We define an exclusive and exhaustive partition of the universe of theoretically possible n-party systems into five basic classes, the understanding of which facilitates more fruitful modeling of legislative politics, including government formation. Having defined a partition of legislative party systems and elaborated logical implications of this partition, we classify the population of postwar European legislatures. We show empirically that many of these are close to critical boundary conditions, so that …

Chalk And Cheese In Twitter: Discriminating Personal And Organization Accounts, Richard Jayadi Oentaryo, Jia-Wei Low, Ee Peng Lim

Research Collection School Of Computing and Information Systems

Social media have been popular not only for individuals to share contents, but also for organizations to engage users and spread information. Given the trait differences between personal and organization accounts, the ability to distinguish between the two account types is important for developing better search/recommendation engines, marketing strategies, and information dissemination platforms. However, such task is non-trivial and has not been well studied thus far. In this paper, we present a new generic framework for classifying personal and organization accounts, based upon which comprehensive and systematic investigation on a rich variety of content, social, and temporal features can be …

Students’ Perspectives On Flipped Classroom Implementation In Higher Education, Joelle Elmaleh, Nachamma Sockalingam

Research Collection School Of Computing and Information Systems

This paper reports students' experiences with a Flipped Classroom pedagogy model in an undergraduate programming course and suggests ways to improve the Flipped Classroom implementation.

Historians As Rooted Cosmopolitans: Their Potentials And Limitations, Hiro Saito

Research Collection School of Social Sciences

In the 1990s, the so-called 'history problem' began to escalate in East Asia as the result of mutually reinforcing nationalist commemorations in Japan, South Korea and China. In response, historians from the three countries organized joint historical research and textbook projects. In this article, I examine the extent to which these joint projects succeeded in promoting the cosmopolitan logic of historiography that challenged nationalist commemorations. Specifically, I compare governmental and non-governmental projects and illustrate structural and dispositional mechanisms that facilitated the cosmopolitan logic of historiography. However, at the same time, I show that the joint projects have had only a …

The Emotional Commitment That Mr Lee Inspired, David Chan

Research Collection School of Social Sciences

In an invited commentary, SMU Behavioural Sciences Institute Director Professor David Chan discussed the public reactions during the national mourning for Mr Lee Kuan Yew and the future of a post-Lee Kuan Yew Singapore.

The Validity Of Sex-Differentiated Mate Preferences: Reconciling The Seemingly Conflicting Evidence, Norman P. Li, Andrea L. Meltzer

Research Collection School of Social Sciences

Across decades and cultures, researchers have found that men prefer physical attractiveness in their romantic partners more than women do, whereas women prefer social status and resources in their partners more than men do. From an evolutionary perspective, these sex differences are important as they reflect hypothesized psychological mechanisms that evolved in response to different adaptive challenges faced by ancestral men and women. Social psychologists, however, have recently challenged the validity of mate preferences and thus, this evolutionary perspective. Indeed, recent speed-dating studies (e.g., Eastwick and Finkel, 2008) and a meta-analysis (Eastwick, Luchies, Finkel, and Hunt, 2014) demonstrate that the …

Rural China In Transition: Changes And Transformations In China’S Agriculture And Rural Sector, John A. Donaldson, Forrest Q. Zhang

Research Collection School of Social Sciences

Agribusiness companies operating in China are transacting in various forms with small agricultural producers, and in doing so, transforming the household-based agriculture in rural China. We argue that the presence of these distinct forms and the diverging relations between agribusiness and producers show the central importance of China’s collective land rights. China’s unique system of land rights – featuring collective ownership but individualized usage rights – has acted as a powerful force in shaping interactions between agribusiness and direct producers. It provides farmers a source of economic income as well as political bargaining power – albeit to various degrees – …