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Articles 721 - 750 of 1733
Full-Text Articles in Economics
Implementation With Transfers, Yi-Chun Chen, Takashi Kunimoto, Yifei Sun
Implementation With Transfers, Yi-Chun Chen, Takashi Kunimoto, Yifei Sun
Research Collection School Of Economics
We say that a social choice rule is implementable with (small) transfers if one candesign a mechanism whose set of equilibrium outcomes coincides with that speciÖed bythe rule but the mechanism allows for (small) ex post transfers among the players. Weshow in private-value environments that any incentive compatible rule is implementablewith small transfers. We obtain this permissive implementation result by proposinga natural extension of Abreu and Matsushima (1994) to incomplete information environments.Furthermore, in order to showcase the applicability of our results, we relatethem to the recent developments in implementation theory. Next we revisit the conjectureby Abreu and Matsushima (1994), who …
Sieve Instrumental Variable Quantile Regression Estimation Of Functional Coefficient Models, Liangjun Su, Tadao Hoshino
Sieve Instrumental Variable Quantile Regression Estimation Of Functional Coefficient Models, Liangjun Su, Tadao Hoshino
Research Collection School Of Economics
In this paper we consider sieve instrumental variable quantile regression (IVQR) estimation of functional coefficient models where the coefficients of endogenous regressors are unknown functions of some exogenous covariates. We estimate the functional coefficients by the sieve-IVQR technique and establish the uniform consistency and asymptotic normality of the estimators. Based on the sieve estimates, we propose a nonparametric specification test for the constancy of the functional coefficients and study its asymptotic. We conduct simulations to evaluate the finite sample behavior of our estimator and test statistic, and apply our method to study the estimation of quantile Engel curves.
Estimation Of Large Dimensional Factor Models With An Unknown Number Of Breaks, Shujie Ma, Liangjun Su
Estimation Of Large Dimensional Factor Models With An Unknown Number Of Breaks, Shujie Ma, Liangjun Su
Research Collection School Of Economics
In this paper we study the estimation of a large dimensional factor model when the factor loadings exhibit an unknown number of changes over time. We propose a novel three-step procedure to detect the breaks if any and then identify their locations. In the first step, we divide the whole time span into subintervals and fit a conventional factor model on each interval. In the second step, we apply the adaptive fused group Lasso to identify intervals containing a break. In the third step, we devise a grid search method to estimate the location of the break on each identified …
Model Selection For Explosive Models, Yubo Tao, Jun Yu
Model Selection For Explosive Models, Yubo Tao, Jun Yu
Research Collection School Of Economics
This paper examines the limit properties of information criteria for distinguishing between the unit root model and the various kinds of explosive models. The information criteria include AIC, BIC, HQIC. The explosive models include the local-to-unit-root model, the mildly explosive model and the regular explosive model. Initial conditions with different order of magnitude are considered. Both the OLS estimator and the indirect inference estimator are studied. It is found that BIC and HQIC, but not AIC, consistently select the unit root model when data come from the unit root model. When data come from the local-to-unit-root model, both BIC and …
Housing Policies In Singapore, Sock Yong Phang, Matthias Helble
Housing Policies In Singapore, Sock Yong Phang, Matthias Helble
Research Collection School Of Economics
Singapore has developed a unique housing system, with three-quarters of its housing stock built by the Housing & Development Board (HDB) and homeownership financed through Central Provident Fund (CPF) savings. As a result, the country’s homeownership rate of 90% is one of the highest among market economies. At different stages of its economic development, the Government of Singapore was faced with a different set of housing problems. An integrated land–housing supply and financing framework was established in the 1960s to solve the severe housing shortage. By the 1990s, the challenge was that of renewing aging estates and creating a market …
Optimal International Agreement And Restriction On Domestic Efficiency, Gea M. Lee
Optimal International Agreement And Restriction On Domestic Efficiency, Gea M. Lee
Research Collection School Of Economics
The WTO's strict treatment of domestic subsidies has not been well received in the existing literature. An essential reason is that the consequent restriction on domestic efficiency is hardly compatible with the existing theory of government intervention under which the primary objective of using domestic subsidies, domestic efficiency, is not sacrificed for another objective. We develop a trade-agreement model in which the magnitude of a legitimate domestic subsidy with which to address a production externality is private information. We find that an optimal agreement substantially restricts domestic efficiency for the international objective of expanding market access.
Subsidies And Countervailing Duties, Gea M. Lee
Subsidies And Countervailing Duties, Gea M. Lee
Research Collection School Of Economics
This survey pays attention to a recent development of the literature that analyzes two important regulatory features found in the Agreement on Subsidies and Countervailing Measures (the SCM agreement): the restrictive treatment of domestic subsidies and the general prohibition of export subsidies. The WTO's restriction on domestic subsidies is challenged by the existing terms-of-trade theory that offers an efficiency foundation for the market-access focus of the GATT rules. On the other hand, against the backdrop of the SCM agreement and preferential trade agreements (PTAs), a recent literature attempts to provide a rationale for the WTO to restrict the use of …
Contributions To The Committee On The Future Economy, Singapore Management University
Contributions To The Committee On The Future Economy, Singapore Management University
Research Collection School Of Economics
In response to the call to contribute to the dialogue initiated by the Committee on The Future Economy (CFE), SMU has held a series of engagement sessions with faculty and staff to brainstorm and propose recommendations to add to the government’s deliberations on strategies for the next stage of Singapore’s economic growth. Through the leadership of SMU Provost, Professor Lily Kong, faculty and senior staff produced various recommendations on five key areas namely Corporate Capabilities and Innovation, Future Growth Industries & Markets, Future of Connectivity, Future City and Future Jobs and Skills.
Quantity Discounts And Capital Misallocation In Vertical Relationships, Ken Onishi
Quantity Discounts And Capital Misallocation In Vertical Relationships, Ken Onishi
Research Collection School Of Economics
I study transactions between aircraft manufacturers and airlines as well as airlines' utilization of their fleet. Aircraft production is characterized by economies of scale via learning-by-doing, which creates a trade-off between current profit and future competitive advantage in the aircraft market. The latter consideration makes large buyers more attractive than small buyers and induces quantity discounts. The resulting nonlinear pricing strategy may distort both production and allocation in favor of large buyers. In the data, there is a negative correlation between the size of aircraft orders and the per-unit price, and a positive correlation between the price paid and the …
Common Threshold In Quantile Regressions With An Application To Pricing For Reputation, Liangjun Su, Pai Xu, Heng Ju
Common Threshold In Quantile Regressions With An Application To Pricing For Reputation, Liangjun Su, Pai Xu, Heng Ju
Research Collection School Of Economics
The paper develops a systematic estimation and inference procedure for quantile regression models where there may exist a common threshold effect across different quantile indices. We first propose a sup-Wald test for the existence of a threshold effect, and then study the asymptotic properties of the estimators in a threshold quantile regression model under the shrinking-threshold-effect framework. We consider several tests for the presence of a common threshold value across different quantile indices and obtain their limiting distributions. We apply our methodology to study the pricing strategy for reputation via the use of a dataset from Taobao.com. In our economic …
Testing For Monotonicity In Unobservables Under Unconfoundedness, Stefan Hoderlein, Liangjun Su, Halbert White, Thomas Tao Yang
Testing For Monotonicity In Unobservables Under Unconfoundedness, Stefan Hoderlein, Liangjun Su, Halbert White, Thomas Tao Yang
Research Collection School Of Economics
Monotonicity in a scalar unobservable is a common assumption when modeling heterogeneity in structural models. Among other things, it allows one to recover the underlying structural function from certain conditional quantiles of observables. Nevertheless, monotonicity is a strong assumption and in some economic applications unlikely to hold, e.g., random coefficient models. Its failure can have substantive adverse consequences, in particular inconsistency of any estimator that is based on it. Having a test for this hypothesis is hence desirable. This paper provides such a test for cross-section data. We show how to exploit an exclusion restriction together with a conditional independence …
Granger Causality And Structural Causality In Cross-Section And Panel Data, Xun Lu, Liangjun Su, Halbert White
Granger Causality And Structural Causality In Cross-Section And Panel Data, Xun Lu, Liangjun Su, Halbert White
Research Collection School Of Economics
Granger non-causality in distribution is fundamentally a probabilistic conditional independence notion that can be applied not only to time series data but also to cross-section and panel data. In this paper, we provide a natural definition of structural causality in cross-section and panel data and forge a direct link between Granger (G-) causality and structural causality under a key conditional exogeneity assumption. To put it simply, when structural effects are well defined and identifiable, G- non-causality follows from structural non-causality, and with suitable conditions (e.g., separability or monotonicity), structural causality also implies G-causality. This justifies using tests of G- non-causality …
Are House Prices Driven By Capital Flows? Evidence From Singapore, Hwee Kwan Chow, Taojun Xie
Are House Prices Driven By Capital Flows? Evidence From Singapore, Hwee Kwan Chow, Taojun Xie
Research Collection School Of Economics
This paper investigates whether real house price appreciations can be attributed to the surge in real capital inflows into Singapore. We proxy capital flows by using the amount of foreign direct investments (FDI) to real estate capturing the foreign purchases of property in Singapore which we deflate by the private residential property price index. Notwithstanding the absence of a cointegrating relationship, our results support the hypothesis that lagged short term fluctuations in capital inflows are positively associated with the growth rates of house prices over the last decade. We also provide evidence that macroprudential measures implemented by Singapore reduced the …
Is Urban Food Demand In The Philippines Different From China?, Tomoki Fujii
Is Urban Food Demand In The Philippines Different From China?, Tomoki Fujii
Research Collection School Of Economics
Food is an essential good, and thus understanding its demand is important for the formulation of sound agricultural policies and developing sustainable agricultural business. A timely analysis of food demand is important because it can change over time not only because prices and incomes change but also because people’s taste itself also change. However, even in countries where food accounts for a sizable share of expenditure or where the agricultural sector accounts for a large share of output, careful analysis of food demand is often not readily available. In this study, we analyze the food demand in urban Philippines and …
Constrained Inefficiency And Optimal Taxation With Uninsurable Risks, Piero Gottardi, Atsushi Kajii, Tomoyuki Nakajima
Constrained Inefficiency And Optimal Taxation With Uninsurable Risks, Piero Gottardi, Atsushi Kajii, Tomoyuki Nakajima
Research Collection School Of Economics
When individuals' labor and capital income are subject to uninsurable idiosyncratic risks, should capital and labor be taxed, and if so how? In a two-period general equilibrium model with production, we derive a decomposition formula of the welfare effects of these taxes into insurance and distribution effects. This allows us to determine how the sign of the optimal taxes on capital and labor depend on the nature of the shocks and the degree of heterogeneity among consumers' income, as well as on the way in which the tax revenue is used to provide lump-sum transfers to consumers. When shocks affect …
Robust Information Cascade With Endogenous Ordering, Yi Zhang
Robust Information Cascade With Endogenous Ordering, Yi Zhang
Research Collection School Of Economics
We analyze a sequential decision model with endogenous ordering in which decision makers are allowed to choose the time of acting (exercising a risky investment option) or waiting. We show the existence of a unique symmetric equilibrium and characterize information cascade under endogenous ordering. Further, if there are two or more risky investment options, individuals tend to wait longer with competition. Hence, we could end up with a dilemma: more options might be worse.
New Distribution Theory For The Estimation Of Structural Break Point In Mean, Liang Jiang, Xiaohu Wang, Jun Yu
New Distribution Theory For The Estimation Of Structural Break Point In Mean, Liang Jiang, Xiaohu Wang, Jun Yu
Research Collection School Of Economics
Based on the Girsanov theorem, this paper first obtains the exact distribution of the maximum likelihood estimator of structural break point in a continuous time model. The exact distribution is asymmetric and tri-modal, indicating that the estimator is seriously biased. These two properties are also found in the finite sample distribution of the least squares estimator of structural break point in the discrete time model. The paper then builds a continuous time approximation to the discrete time model and develops an in-fill asymptotic theory for the least squares estimator. The obtained in-fill asymptotic distribution is asymmetric and tri-modal and delivers …
Meritocracy Voting: Measuring The Unmeasurable, Peter C. B. Phillips
Meritocracy Voting: Measuring The Unmeasurable, Peter C. B. Phillips
Research Collection School Of Economics
Learned societies commonly carry out selection processes to add new fellows to an existing fellowship. Criteria vary across societies but are typically based on subjective judgments concerning the merit of individuals who are nominated for fellowships. These subjective assessments may be made by existing fellows as they vote in elections to determine the new fellows or they may be decided by a selection committee of fellows and officers of the society who determine merit after reviewing nominations and written assessments. Human judgment inevitably plays a central role in these determinations and, notwithstanding its limitations, is usually regarded as being a …
Shrinkage Estimation Of Dynamic Panel Data Models With Interactive Fixed Effects, Xun Lu, Liangjun Su
Shrinkage Estimation Of Dynamic Panel Data Models With Interactive Fixed Effects, Xun Lu, Liangjun Su
Research Collection School Of Economics
We consider the problem of determining the number of factors and selecting the proper regressors in linear dynamic panel data models with interactive fixed effects. Based on the preliminary estimates of the slope parameters and factors a la Bai (2009) and Moon and Weidner (2015), we propose a method for simultaneous selection of regressors and factors and estimation through the method of adaptive group Lasso (least absolute shrinkage and selection operator). We show that with probability approaching one, our method can correctly select all relevant regressors and factors and shrink the coefficients of irrelevant regressors and redundant factors to zero. …
Semiparametric Estimation Of Partially Linear Dynamic Panel Data Models With Fixed Effects, Liangjun Su, Yonghui Zhang
Semiparametric Estimation Of Partially Linear Dynamic Panel Data Models With Fixed Effects, Liangjun Su, Yonghui Zhang
Research Collection School Of Economics
In this paper, we study a partially linear dynamic panel data model with fixed effects, where either exogenous or endogenous variables or both enter the linear part, and the lagged-dependent variable together with some other exogenous variables enter the nonparametric part. Two types of estimation methods are proposed for the first-differenced model. One is composed of a semiparametric GMM estimator for the finite-dimensional parameter θ and a local polynomial estimator for the infinite-dimensional parameter m based on the empirical solutions to Fredholm integral equations of the second kind, and the other is a sieve IV estimate of the parametric and …
Inference In Near-Singular Regression, Peter C. B. Phillips
Inference In Near-Singular Regression, Peter C. B. Phillips
Research Collection School Of Economics
This paper considers stationary regression models with near-collinear regressors. Limit theory is developed for regression estimates and test statistics in cases where the signal matrix is nearly singular in finite samples and is asymptotically degenerate. Examples include models that involve evaporating trends in the regressors that arise in conditions such as growth convergence. Structural equation models are also considered and limit theory is derived for the corresponding instrumental variable (IV) estimator, Wald test statistic, and overidentification test when the regressors are endogenous. It is shown that near-singular designs of the type considered here are not completely fatal to least squares …
Hot Property In New Zealand: Empirical Evidence Of Housing Bubbles In The Metropolitan Centres, Ryan Greenaway-Mcgrevy, Peter C. B. Phillips
Hot Property In New Zealand: Empirical Evidence Of Housing Bubbles In The Metropolitan Centres, Ryan Greenaway-Mcgrevy, Peter C. B. Phillips
Research Collection School Of Economics
Using recently developed statistical methods for testing and dating exuberant behaviour in asset prices we document evidence of episodic bubbles in the New Zealand property market over the past two decades. The results show clear evidence of a broad-based New Zealand housing bubble that began in 2003 and collapsed over mid-2007 to early 2008 with the onset of the worldwide recession and the financial crisis. New methods of analysing market contagion are also developed and are used to examine spillovers from the Auckland property market to the other metropolitan centres. Evidence from the latest data reveals that the greater Auckland …
Csi Agent On A Mission Game App, Ju Mae Rosie Ching
Csi Agent On A Mission Game App, Ju Mae Rosie Ching
Research Collection School Of Economics
CSI is a one-of-a-kind and first-ever iPad gaming app released early August, with the flash game at http://www.rosieching.com/csi. My primary objective was to realize my dreamed-up “MISSION STATISTICS” theme for students to apply their skills in hypothesis tests and linear regression. Another is the incorporation of their CSI results into an “enrichment 5%” of their grades. The harder an agent works, the higher his score, the sweeter the fruit of the labour which students always show massive enthusiasm for. It is also critical that students review their real-time progress, and I have ensured that in every step of each country’s …
Linear Programming-Based Estimators In Nonnegative Autoregression, Daniel P. A. Preve
Linear Programming-Based Estimators In Nonnegative Autoregression, Daniel P. A. Preve
Research Collection School Of Economics
This note studies robust estimation of the autoregressive (AR) parameter in a nonlinear, nonnegative AR model. It is shown that a linear programming estimator (LPE), considered by Nielsen and Shephard (2003) among others, remains consistent under severe model misspecification. Consequently, the LPE can be used to seek sources of misspecification and to isolate certain trend, seasonal or cyclical components. Simple and quite general conditions under which the LPE is strongly consistent in the presence of heavy-tailed, serially correlated, heteroskedastic disturbances are given, and a brief review of the literature on LP-based estimators in nonnegative autoregression is presented. Finite-sample properties of …
The Impact Of Agglomeration Economies On Hospital Input Prices, Andrew Friedson, Jing Li
The Impact Of Agglomeration Economies On Hospital Input Prices, Andrew Friedson, Jing Li
Research Collection School Of Economics
This paper examines the extent to which agglomeration of the hospital service industry enhances the productivity of producing health care. Specifically, we use a large set of private insurance claims from the FAIR Health database to show that an increasing spatial concentration of hospital services results in a decreased cost of obtaining intermediate medical services. We explicitly test whether the reduced cost at concentrated locations arises from the ability to share intermediate service providers. The identification relies on state variation in medical lab technician licensure requirements, which influence the cost of intermediate services only through the cost of running a …
Trade Integration, Income Divergence, And Global Imbalances, Haiping Zhang
Trade Integration, Income Divergence, And Global Imbalances, Haiping Zhang
Research Collection School Of Economics
We embed financial frictions and sector-specific minimum investment requirements (MIR) in a two-factor, two-sector, overlapping-generation model and showthat whether trade integration leads to convergence of the income levels among member states depends on their level of financial development. It helps reconcilethe mixed empirical evidence on trade integration and income dynamics in differentgroups of countries from the institutional perspective. In the recent decades, trade globalization has allowed developed countries to specialize towards the high-MIR, high-return production stages and tasks through international fragmentation of production and global sourcing. In our model, the “sectors” can be interpreted broadly as production stages and tasks. …
Unified M-Estimation Of Fixed-Effects Spatial Dynamic Models With Short Panels, Zhenlin Yang
Unified M-Estimation Of Fixed-Effects Spatial Dynamic Models With Short Panels, Zhenlin Yang
Research Collection School Of Economics
It is well known that quasi maximum likelihood (QML) estimation of dynamic panel data (DPD) models with short panels depends on the assumptions on the initial values, and a wrong treatment of them will result in inconsistency and serious bias. The same issues apply to spatial DPD (SDPD) models with short panels. In this paper, a unified Mestimation method is proposed for estimating the fixed-effects SDPD models containing three major types of spatial effects, namely spatial lag, spatial error and space-time lag. The method is free from the specification of the distribution of the initial observations and robust against nonnormality …
Institutional Complementarity Across Countries In Bilateral Fdi Flows: Theory And Evidence, Pao-Li Chang
Institutional Complementarity Across Countries In Bilateral Fdi Flows: Theory And Evidence, Pao-Li Chang
Research Collection School Of Economics
This paper builds a theory to characterize the comparative advantage of MNEs based in countries of different institutional qualities. It is shown that MNEs headquartered in countries of poorer state institutions will invest more in `informal institutions; and choose to undertake FDI in countries of weaker institutions. At the aggregate, MNEs on average generate more net profits in countries of weaker institutions, the poorer the institutional environment at home. I conduct an extensive test of the theory using bilateral FDI volume for 219 economies in year 2001-2010. The results indicate a statistically significant and robust institutional complementarity effect in bilateral …
New Methodology For Constructing Real Estate Price Indices Applied To The Singapore Residential Market, Liang Jiang, Peter C. B. Phillips, Jun Yu
New Methodology For Constructing Real Estate Price Indices Applied To The Singapore Residential Market, Liang Jiang, Peter C. B. Phillips, Jun Yu
Research Collection School Of Economics
This paper develops a new methodology for constructing a real estate price index that utilizes all transaction price information, encompassing both single-sales and repeat-sales. The method is less susceptible to specification error than standard hedonic methods and is not subject to the sample selection bias involved in indexes that rely only on repeat sales. The methodology employs a model design that uses a sale pairing process based on the individual building level, rather than the individual house level as is used in the repeat-sales method. The approach extends ideas from repeat-sales methodology in a way that accommodates much wider datasets. …
Intraday Value-At-Risk: An Asymmetric Autoregressive Conditional Duration Approach, Shouwei Liu, Yiu Kuen Tse
Intraday Value-At-Risk: An Asymmetric Autoregressive Conditional Duration Approach, Shouwei Liu, Yiu Kuen Tse
Research Collection School Of Economics
We propose to compute the Intraday Value-at-Risk (IVaR) for stocks using real-time transaction data. Tick-by-tick data filtered by price duration are modeled using a two-state asymmetric autoregressive conditional duration (AACD) model, and the IVaR is calculated using Monte Carlo simulation based on the estimated AACD model. Backtesting results for the New York Stock Exchange (NYSE) show that the IVaR calculated using the AACD method outperforms those using the Dionne et al. (2009) and Giot (2005) methods.