C.V. of Kengo Kato


Major: Mathematical Statistics, Model Selection, Quantile Regression

Education
 
2009  Ph.D. (Economics)  Graduate School of Economics, University of Tokyo
          Adviser: Prof. Tatsuya Kubokawa
 2007  M.A. (Economics)  Graduate School of Economics, University of Tokyo
 2005  B.A. (Economics)  Department of Economics, University of Tokyo

Employment
 2009-Present  Assistant Professor, Department of Mathematics, Hiroshima University
 2008-2009  Research Fellow-DC2, Japan Society for the Promotion of  Science   

Visiting Position
 
2011-2012 Visiting Scholar,  Department of Economics, MIT


Publications and working papers
  1. Improved prediction for a multivariate normal distribution with unknown mean and variance. Ann. Inst. Statist. Math., 61, 2009, 531-542. 
  2. On the degrees of freedom in shrinkage estimation.  J. Multivariate Anal., 100, 2009, 1338-1352.
  3. Asymptotics for argmin processes: Convexity arguments. J. Multivariate Anal., 100, 2009, 1816-1829. 
  4. Solving $\ell_1$ regularization problems with piecewise linear losses. J. Comp. Graph. Statist., 2009, accepted.
  5. A theory of lasso-quantile regression and its application to a non-life insurance problem (in Japanese, with Prof. Naoto Kunitomo and Mr. Satoshi Masuda). J. Japan Statist. Soc., 38, 2009, 121-149.
  6. Asymptotic normality of Powell's kernel estimator. Ann. Inst. Statist. Math., 2009, accepted. 
  7. Weighted Nadaraya-Watson estimation of conditional expected shortfall. J. Financial Econometrics, 2012, accepted. 
  8. Asymptotics for panel quantile regression models with individual effects (revised). (with Prof. Galvao and Prof. Montes Rojas). J. Econometrics, 2012, accepted.
  9. Smoothed quantile regression for panel data (under revision) (with Prof. Galvao). pdf
  10. Testing linearity against threshold effects: uniform inference in quantile regression (with Profs. Galvao, Montes-Rojas, Olmo). 
  11. A note on moment convergence of bootstrap M-estimators. Statistics and Decisions, accepted.
  12. Group Lasso for high dimensional sparse quantile regression models. arxiv:1103.1458
  13. Two-step estimation of high dimensional additive models. (in progress)
  14. Estimation in functional linear quantile regression. arxiv:1202:4850   Sample Ox code (note: zip file)
  15. Quasi-Bayesian analysis of nonparametric instrumental variables models. arxiv:1204:2108

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