Research

This page highlights selected publications (focused on recent works) and recently submitted papers (under review & revision), focusing on topics we aim to expand, generalize, or further explore. The purpose of sharing this list is primarily to foster collaboration and communication. The complete list of all papers and projects is always available upon request.

Selected Publications

2025

  1. ALTBI: Constructing Improved Outlier Detection Models via Optimization of Inlier-Memorization Effect
    Seoyoung Cho, Jaesung Hwang, Kwan-Young Bak, and 1 more author
    The 39th Annual AAAI Conferenec on Artificial Intelligence, 2025

2024

  1. Effect of dimensionality on convergence rates of kernel ridge regression estimator
    Kwan-Young Bak, and Woojoo Lee
    Journal of Statistical Planning and Inference, 2024
  2. Dynamics of COVID-19 risk perception and predictors in South Korea: a two-year longitudinal study from the pandemic’s beginning (2020-2021)
    Minjung Lee, Seongoh Park, Sujin Seo, and 5 more authors
    Jouranl of Risk Research, 2024
  3. An adaptive neural network regression method for structure identification
    Jae-Kyung Shin, Kwan-Young Bak, and Ja-Yong Koo
    Journal of Computational and Graphical Statistics, 2024

2023

  1. Minimax density estimation under radial symmetry
    Kwan-Young Bak, and Ja-Yong Koo
    IEEE Access, 2023
  2. Minimax estimation in multi-task regression under low-rank structures
    Kwan-Young Bak, and Ja-Yong Koo
    Journal of Nonparametric Statistics, 2023
  3. Intrinsic spherical smoothing method based on generalized Bezier curves and sparsity inducing penalization
    Kwan-Young Bak, Jae-Kyung Shin, and Ja-Yong Koo
    Journal of Applied Statistics, 2023

2022

  1. Sparse neural network regression with variable selection
    Jae-Kyung Shin, Kwan-Young Bak, and Ja-Yong Koo
    Computational Intelligence, 2022
  2. Penalized additvie neural network regression
    Jae-Kyung Shin, Kwan-Young Bak, and Ja-Yong Koo
    Intelligent Data Analysis, 2022
  3. Additive regression splines with total variation and non negative garrote penalties
    Jae-Hwan Jhong, Kwan-Young Bak, Jae-Kyung Shin, and 1 more author
    Communications in Statistics - Theory and Methods, 2022
  4. Linear Methodology (선형방법론)
    Ja-Yong Koo, Kwan-Young Bak, Jae-Kyung Shin, and 1 more author
    Freedom Academy, 2022

2021

  1. Nonparametric matrix regression function estimation over symmetric positive definite matrices
    Kwan-Young Bak, Kwang-Rae Kim, Peter T Kim, and 3 more authors
    Journal of the Korean Statistical Society, 2021
  2. Penalized logspline density estimation using total variation penalty
    Kwan-Young Bak, Jae-Hwan Jhong, JungJun Lee, and 2 more authors
    Computational Statistics & Data Analysis, 2021

Recently Submitted Papers (Under Review & Revision)

Last updated: November 22, 2024.


  1. Comparison of cognitive and affective dimensions of multi-risk perception according to sociodemographic characteristics in a South Korean population
    Ryemi Do, Kwan-Young Bak, Myoungjee Jung, and 4 more authors

    Political party preference, accountability, and risk perception: Crowd crush in South Korea
    Yookyung Eoh, Kwan-Young Bak, Seoyeon Kim, and 3 more authors

    Linear covariance selelction model via ℓ1 penalization
    Kwan-Young Bak, Seongoh Park

    Minimax optimality of kernel ridge regression when kernel eigenvalues decay polynomially or exponentially
    Kwan-Young Bak, Woojoo Lee

    Calibrating a simulated exposure distribution
    Jiwoong Yu, Xueyan Zheng, Kwan-Young Bak, and 2 more authors

    spheresmooth: a penalized piecewie geodeisc curve fitting on a sphere
    Jae-Hwan Jhong, Seyoung Lee, Ja-Yong Koo, Kwan-Young Bak

    Adaptive log-wavelet density estimation with resolution identification
    Kwan-Young Bak, Eun-Ji Lee, Jae-Hwan Jhong

    Super-precision change point detection using weighted total variation penalty
    Kwan-Young Bak, Eun-Ji Lee, Jae-Hwan Jhong

    Low-dimension adaptive neural network regression with directional change dDetection via nuclear norm Penalization
    Yongku Kim, Jae-Hwan Jhong, Ja-Yong Koo, Kwan-Young Bak

    Nonparametric multi-task regression under group sparsity and low-rank structures
    Donghwi Nam, Ja-Yong Koo, Kwan-Young Bak

    Dimensionality reduction in nultivariate nonparametric regression via nuclear norm penalization
    Donghwi Nam, Ja-Yong Koo, Kwan-Young Bak

    Multi-task nonparametric regression under joint sparsity
    Gyeongmin Kim, Jae-Hwan Jhong, Kwan-Young Bak