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Author:Doh, Taeyoung 

Working Paper
The state space representation and estimation of a time-varying parameter VAR with stochastic volatility

To capture the evolving relationship between multiple economic variables, time variation in either coefficients or volatility is often incorporated into vector autoregressions (VARs). However, allowing time variation in coefficients or volatility without restrictions on their dynamic behavior can increase the number of parameters too much, making the estimation of such a model practically infeasible. For this reason, researchers typically assume that time-varying coefficients or volatility are not directly observed but follow random processes which can be characterized by a few parameters. ...
Research Working Paper , Paper RWP 12-04

Working Paper
Trend and Uncertainty in the Long-Term Real Interest Rate: Bayesian Exponential Tilting with Survey Data

Research Working Paper , Paper RWP 17-8

Working Paper
The Equilibrium Term Structure of Equity and Interest Rates

We develop an equilibrium asset pricing model with Epstein-Zin recursive preferences that accounts for major stylized facts of the term structure of bond and equity risk premia. While the term structure of bond risk premia tends to be upward-sloping on average, the term structure of equity risk premia is known to be downward-sloping. {{p}} The equilibrium asset pricing model with long-run consumption risks has difficulty matching these stylized facts simultaneously. The standard calibration of these models follows Bansal and Yaron (2004), in which agents prefer the early resolution of ...
Research Working Paper , Paper RWP 16-11

Working Paper
Long run risks in the term structure of interest rates: estimation

This paper specifies and estimates a long run risks model with inflation by using the nominal term structure data in the United States from 1953 to 2006. The negative correlation between expected inflation and expected consumption growth in conjunction with the Epstein-Zin (1989) recursive preferences generates an upward sloping yield curve and fits the yield curve data better than the alternative specifications. However, the variations of the forward looking components of consumption growth and inflation in the estimated model are much smaller than implied by calibrated parameter values in ...
Research Working Paper , Paper RWP 08-11

Working Paper
Monetary policy regime shifts and inflation persistence

This paper reports the results of estimating a Markov-Switching New Keynesian (MSNK) model using Bayesian methods. The broadest and best fitting MSNK model is a four-regime model allowing independent changes in the regimes governing monetary policy and the volatility of the shocks. We use the estimates to investigate the mechanisms that lead to a decline in the persistence of inflation. We show that the population moment describing the serial correlation of inflation is a weighted average of the autocorrelation parameters of the exogenous shocks. Changes in the monetary or shock volatility ...
Research Working Paper , Paper RWP 08-16

Working Paper
Reconciling VAR-based Forecasts with Survey Forecasts

This paper proposes a novel Bayesian approach to jointly model realized data and survey forecasts of the same variable in a vector autoregression (VAR). In particular, our method imposes a prior distribution on the consistency between the forecast implied by the VAR and the survey forecast for the same variable. When the prior is placed on unconditional forecasts from the VAR, the prior shapes the posterior of the reduced-form VAR coefficients. When the prior is placed on conditional forecasts (specifically, impulse responses), the prior shapes the posterior of the structural VAR ...
Research Working Paper , Paper RWP 18-13

Working Paper
A Bayesian evaluation of alternative models of trend inflation

The concept of trend inflation is important in making accurate inflation forecasts. However, there is little consensus on how the trend in inflation should be modeled. While some studies suggest a survey-based measure of long-run inflation expectations as a good empirical proxy for trend inflation, others have argued for a statistical exercise of decomposing inflation data into trend and cycle components. In this paper, we assess alternative models of trend inflation based on the accuracy of medium-term inflation forecasts. To incorporate recent evidence on the time-varying macroeconomic ...
Research Working Paper , Paper RWP 11-16

Working Paper
Yield curve in an estimated nonlinear macro model

What moves the yield curve? This paper specifies and estimates a dynamic stochastic general equilibrium (DSGE) model solved using a second order approximation to equilibrium conditions to answer this question. From the empirical analysis of U.S. data from 1983:Q1 to 2007:Q4, I find that the monetary policy response to the inflation gap defined by the difference between expected inflation and the inflation target of the central bank is a key channel transmitting macro shocks to the yield curve and that the degree of nominal rigidity determines which macro shocks are more important determinants ...
Research Working Paper , Paper RWP 09-04

Journal Article
The efficacy of large-scale asset purchases at the zero lower bound

During the recent financial crisis, the Federal Reserve took unprecedented actions to prevent the economy from collapsing. First, the Federal Open Market Committee (FOMC) lowered the short-term federal funds rate nearly to its zero lower bound. Then, several months later, the FOMC began making large-scale purchases of long-term Treasury bonds to lower long-term interest rates by reducing the supply of long-term assets. The FOMC?s announcement of its intent led to immediate and substantial declines in the yields of long-term Treasury bonds, but some observers questioned whether such purchases ...
Economic Review , Volume 95 , Issue Q II , Pages 5-34

Journal Article
Has the Anchoring of Inflation Expectations Changed in the United States during the Past Decade?

The financial crisis and Great Recession led to dramatic shifts in U.S. monetary policy over the past decade, with potential implications for inflation expectations. Prior to the crisis, inflation expectations were well anchored. But during the crisis and recovery, the Federal Reserve turned to new policies such as large-scale asset purchases (LSAPs). In addition, the Federal Open Market Committee adopted a formal inflation target in 2012, with the stated goal of keeping longer-term inflation expectations stable. Did inflation expectations remain anchored during this period of unconventional ...
Economic Review , Issue Q I , Pages 31-58

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