Publications (selected)
Ahn, S.*, Lim, J.*, Jiang, W., Lee, S., Wang, X. (*corresponding author) (2025). Structure preserving t-SNE of matrix framed data. Computational and Structural Biotechnology Journal. doi.org/10.1016/j.csbj.2025.05.019
Pyo, S.-I., Ahn, S., Kwon, S.-S. (2025). Visualization algorithm based on FDR control testing for dimension reduction of textual data. Data Technologies and Applications. doi.org/10.1108/DTA-04-2024-0373
Chung, D. Kwon, S., Ahn, S.* (*corresponding author) (2024). Enhanced Trajectory Data Visualization: A Dynamic Time Warping Integrated t-SNE Approach with Real-Data Applications. Communications in Statistics - Simulation and Computation. In Press. doi.org/10.1080/03610918.2024.2430732
Ahn, S., Moon, C., Wang, X., Lim, J. (2024). New Scheme of Empirical Likelihood Method for Ranked Set Sampling: Applications to Two One Sample Problems. International Statistical Review. In Press. doi.org/10.1111/insr.12589
Ahn, S.*, Lee, J.S.*, Lee M.W., Han, S., Min, J.H., Cha, D.I., Song, K.D., Kang, T.W., Rhim, H. (*joint first author) (2024). Percutaneous radiofrequency ablation of hepatocellular carcinomas abutting the right posterior diaphragm: factors associated with tumor recurrence and overall survival. Acta Radiologica. In Press.
Ahn, S.*, Cho, Y.Y.*, Lee, E.K., Park, Y.J., Choi, D., Kim, B.-Y., Jung, C.-H., Mok, J.O., Kim, C.-H., Kim, S.W. (*joint first author) (2024). Malignancy Risk of Follicular Neoplasm (Bethesda IV) With Variable Cutoffs of Tumor Size: A Systemic Review and Meta-Analysis. Journal of Clinical Endocrinology & Metabolism, 109(5), 1383-1392.
Ahn S.*, Choi, Y.G.*, and Kim, J. (*joint first author) (2023). Model-based clustering for mixed data with arbitrary dependency structure. IEEE Access, 11, 75945.
Cha, D.I.*, Ahn S.*, Lee, M.W., Jeong, W.K., Song, K.D., Kang, T.W., and Rhim, H. (* joint first author) (2023). Risk group stratification for recurrence-free survival and early tumor recurrence after radiofrequency ablation for hepatocellular carcinoma. Cancers, 15(3), 687.
Choi, E.-Y., Park, J.-S., Min, D., Ahn, S., and Ahn, J.-A. (2023). Heart failure-smart life: a randomzed controlled trial of a mobile app for self-management in patients with heart failure. BMC Cardiovascular Disorders 23, 7.
Ahn, S., Wang, X., Lim, J. (2022). Efficient sample allocation by local adjustment for unbalanced ranked set sampling. Springer.
Cao, Y., Seo, K., and Lim, J., Ahn, S.* (*corresponding author) (2022). Estimation of high-dimensional sparse cross correlation matrix. Communications for Statistical Applications and Methods 29(6), 1-10.
Ahn, S., Wang, X., Wang, M., and Lim, J. (2022). On Continuity Correction for RSS-structured Cluster Randomized Designs with Binary Outcomes. Metron 80, 383-397.
Oh, H., Park, H.J., Oh, J., Lee, E.S., Park, S.B, Cha, M.J., and Ahn, S. (2022). Hyperechoic pancreas on ultrasonography: an analysis of its severity and clinical implications. Ultrasonography 41(2), 335.
Ke, S.E., Lee, M.W., Min, J.H., Ahn, S., Rhim, H., Kang, T.W., Song, K.D., Kim, J.M., Choi, G.-S., Cha, D.I., Lim, H.K. (2022). Laparoscopic radiofrequency ablation of subcapsular hepatocellular carcinomas: risk factors related to a technical failure. Surgical Endoscopy 36, 504-514.
Wang, M., Wang, X., Lim, J., and Ahn, S. (2020). Using Ranked Set Sampling with Binary Outcomes in Cluster Randomized Designs. The Candian Journal of Statistics 48(3), 342-365.
Ahn, S., Choi, H., Lim, J., and Lee, K.E. (2020). Self-Semi-Superviesed Clustering. Journal of Korean Statistical Society 49, 161-176.
Lee, S.J., Wang, H., Ahn, S., Son, M.K., Hyun, G.H., Yoon, S.J., Lee, J., Park, J.H., Lim, J., Hong, S-S, and Kwon, S.W. (2019). Metabolomics approach based on multivariate techniques for blood transfusion reactions. Scientic Reports 9, 1740.
Ahn, S., Lim, J., Paik, M.C., Sacco, R.L., and Elkind, M.S. (2018). Cox model with intervally censored covariate in cohort studies. Biometrical Journal, 60, 797-814.
Lee, S.J., Yi. T., Ahn, S., Lim, D. K., Kim, S.-N., Lee, H.-J., Cho, Y.-K., Lim, J.-Y., Sung, J.-H., Yun, J.-H., Lim, J., Song, S.U., and Kwon, S. W. (2018). Comparative study on metabolite level in tissue-specic human mesenchymal stem cells by an ultra-performance liquid chromatography quadrupole time of flight mass spectrometry, Analytica Chimica Acta 1024, 112-122.
Ahn, S.*, Wang, X*, and Lim J. (* joint first author) (2017). Unbalanced ranked set sampling in cluster randomized studies. Journal of Statistical Planning and Inference. 187, 1-16.
Ahn, S., Wang, X., and Lim, J. (2017). On unbalanced group sizes in cluster randomized designs using balanced ranked set sampling. Statistics and Probability Letters, 123, 210-217.
Lee, D-K, Ahn, S., Cho, H.Y., Yun, H.Y., Park, J.H., Lim, J., Lee, J., and Kwon, S.W. (2016). Metabolic response induced by parasitic plant-fungi interactions hinder the plant host from facilitating amino sugar and nucleotide sugar metabolism in the host. Scientic Reports, 6, 37434.
Ahn, S.*, Kim, K*, Lim, J., Yoo, B.C., Hwang, J.H., and Jang, W. (* joint first author) (2015). Detection of pancreatic cancer biomarkers using mass spectrometry. Cancer Informatics, 13(Suppl 7), 45-53.
Ahn, S., Lim, J., and Wang, X. (2014) The Student's t approximation to distributions of pivotal statistics from ranked set samples. Journal of the Korean Statistical Society, 43(4), 643-652.
Chen, M., Ahn, S., Wang, X., and Lim, J. (2014). Generalized isotonized mean estimators for judgment post-stratication with multiple rankers. Journal of Agricultural, Biological, and Environmental Statistics, 19(4), 405-418.
Lee, S.J., Woo, S., Ahn, S., Lim, D.K., Hong, J.Y., Park, J.H., Lim, J., Kim, M., and Kwon, S.W. (2014). Functional interpretation of metabolomics data as a new method for predicting long-term side effects: treatment of atopic dermatitis in infants. Scientic Reports, 4, 7408.
Lee, S.J., Yi, T., Ahn, S., Lim, D.K., Hong, J.Y., Cho, Y.K., Lim, J., Song, S.U., and Kwon, S.W. (2014). Senescing human bone-marrow-derived clonal mesenchymal stem cells have altered lysophospholipid composition and functionality. Journal of Proteome research, 13(3), 1438-1449.
Submitted / In Preparation
Conformalized quality control for histogram-valued data (with Lee, S., and Lim, J.)
Quality control for signal data in frequency domain
Conformal prediction for multivariate data (with Lim, J. and Jung, Y.)
Supervised t-SNE for imbalanced data (with Lim, J.)
1-SVM based outlier detection for histogram-valued data (with Lee, S., Jung, Y. and Lim, J.)
Prediction model development using EGG data (with Wang, X.)
Jackknife empirical likelihood for AUC based on RSS (with Lim, Y.)
RSS R Package (with Moon, C.)
Model based clustering with optimal scoring for ordinal data: OS-Mclust. (with Lee, K.)