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동의어 포함
Title Page 2
Contents 5
Abstract 8
Chapter 1. INTRODUCTION AND LITERATURE REVIEW 9
1. Introduction 9
2. Econometric Framework 10
1) Reduced Form Vector Autoregressive (VAR) Models 10
2) Bayesian Vector Autoregressive (BVAR) Models 11
3) Hierarchical Priors 14
4) Vector Heterogeneous Autoregressive (VHAR) Models 16
5) Pseudo Out-of-Sample Forecasting 18
Chapter 2. BAYESIAN VECTOR HETEROGENEOUS AUTOREGRESSIVE MODELING 20
1. Introduction 20
2. BVHAR model and estimation 21
1) Minnesota Prior 21
2) Forecasting and predictive distribution of BVHAR 23
3) Hyperparameter selection for BVHAR 24
3. Posterior consistency of BVHAR 25
4. Simulation Study 30
5. Empirical Analysis 34
6. Conclusion and Discussions 38
Chapter 3. BVHAR MODELS WITH SHRINKAGE PRIORS 41
1. Introduction 41
2. Vector Heterogeneous Autoregressive Model with Cholesky Parameterization 41
3. Continuous Shrinkage Priors 42
1) Hierarchical Minnesota Prior 42
2) SSVS (Stochastic Search Variable Selection) Prior 43
3) Grouped Global-Local (GGL) Shrinkage Priors 45
4) Generalized Double Pareto (GDP) Shrinkage Prior 48
5) Signal Adaptive Variable Selector (SAVS) 49
6) Point and Density Forecasting 51
4. Computational Benchmark 52
5. Simulation Study 53
1) Estimating Synthetic Data 54
2) Forecasting Sythetic Data 56
6. Empirical Analysis 57
7. Conclusion 58
Chapter 4. Summary and Discussion 59
1. Summary 59
2. Discussion and Future Work 59
1) Software Package 59
2) Volatility Spillovers 60
3) Stationarity 61
4) Time Series Variable Selection 61
5) Time-Varying Coefficients and Volatilities 62
6) Variable Ordering 63
7) Matrix-Valued Time Series 63
References 64
Appendix 72
〈Appendix A〉 Probability Distributions 72
〈Appendix B〉 Appendix to Chapter 2 74
〈Appendix B.1〉 Constant Term in VHAR Model 74
〈Appendix B.2〉 Optimization for hyperparameter selection 75
〈Appendix B.3〉 Proof of posterior consistency 75
〈Appendix C〉 Appendix to Chapter 3 82
〈Appendix C.1〉 Posterior Estimation 82
논문요약 90
Figure 2-1. Heatmap of BVHAR-S estimation when the true model is BVHAR-S 32
Figure 2-2. Heatmap of BVHAR-L estimation when the true model is BVHAR-S 33
Figure 2-3. Time plots for nine CBOE ETF VIXs 35
Figure 2-4. SACF and SCCF for GVZSM and VXGDXSM VIXs. Cross-correlations are calculated... 36
Figure 2-5. Forecasting Interval, where the black line indicates the true value 39
Figure 3-1. Benchmark results of BVAR〔22), BVAR〔3), and BVHAR with each prior 52
Figure 3-2. Time plots for 15 CBOE VIXs including validation sets (shaded period) 57
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