手法を比較

	ベイズ分位点-分位点回帰	ベイズ型VARモデル（BVAR）
分野	計量経済学	計量経済学
系統	Regression model	Regression model
提唱年	2015–2019	1984
提唱者	Bayesian QQ framework combines Sim & Zhou (2015) QQ regression with Bayesian quantile regression (Yu & Moyeed, 2001)	Doan, Litterman & Sims
種類	Nonparametric quantile regression with Bayesian estimation	Multivariate time-series model
原典	Sim, N., & Zhou, H. (2015). Oil prices, US stock return, and the dependence between their quantiles. Journal of Banking and Finance, 55, 1–8.	Doan, T., Litterman, R., & Sims, C. (1984). Forecasting and conditional projection using realistic prior distributions. Econometric Reviews, 3(1), 1–100.
別名	Bayesian QQR, Bayesian QQ regression, Bayes quantile-on-quantile, BQQ regression	BVAR, Bayesian VAR, Bayesian vector autoregressive model, BVAR model
関連	6	5
概要	Bayesian Quantile-on-Quantile (BQQ) Regression extends the Sim-Zhou quantile-on-quantile framework by replacing frequentist local linear estimation with Bayesian posterior inference. For each pair of quantiles (theta of the outcome, tau of the predictor), the method yields a full posterior distribution over the slope, enabling uncertainty quantification across the entire bivariate quantile surface — a key advantage when sample sizes are moderate and tail quantiles are sparse.	The Bayesian Vector Autoregression (BVAR) model extends the classical VAR framework by incorporating prior beliefs about the model coefficients. Priors — most commonly the Minnesota prior — shrink VAR coefficients toward economically sensible values, dramatically reducing overfitting and improving out-of-sample forecast accuracy even when the number of variables is large.