Journal Papers

  1. Jung, S. H. Jung, Chen, Y. and Ahn, H. Type I Error Control for Tree Classification. Cancer Informatics. In press.

  2. Ahn, H. Discussion paper on "Fifty Years of Classification and Regression Trees" by W.-Y. Loh. International Statistical Review. In press.

  3. Chen, Y. C., Ha, H., Kim, H. and Ahn, H. Canonical Forest. (2014). Computational Statistics. 29, 849-867. pdf file

  4. Lee, K., Ahn, H., Moon, H., Kodell, R. L. and Chen, J. J. (2013). Multinomial Logistic Regression Ensembles. Journal of Biopharmaceutical Statistics, 23, 681-694. pdf file

  5. Kapoor, A., Gupta, A., Desai, N. and Ahn, H. (2011). Effect of Zoledronic Acid on Bone Mineral Density in Men with Prostate Cancer Receiving Gonadotropin-Releasing Hormone Analog. Prostate Cancer, doi:10.1155/2011/176164. pdf file

  6. Kweon, O., Kim, S. J., Holland, R. D., Chen, H., Kim, D. W., Gao, Y., Yu, L. R., Baek, S., Baek, D. H., Ahn, H., Cerniglia, C. E. Polycyclic Aromatic Hydrocarbon Metabolic Network in Mycobacterium vanbaalenii PYR-1 (2011). A Weight-Adjusted Voting Algorithm for Ensembles of Classifiers. Journal of Bacteriology, Sep; 193(17) 4326-4337. pdf file

  7. Kim, H., Kim, H., Moon, H. and Ahn, H. (2011). A Weight-Adjusted Voting Algorithm for Ensembles of Classifiers. Journal of the Korean Statistical Society, 40, 437-449. pdf file

  8. Lee, H., Malaspina, D., Ahn, H., Perrin, M., Opler, M. G., Kleinhaus, K., Harlap, S., Goetz, R. and Antonius, D. (2011). Paternal Age Related Schizophrenia (PARS): Latent Subgroups Detected by K-Means Clustering Analysis. Schizophrenia Research, 128, 143-149. pdf file

  9. Sheynkin, Y., Welliver, R., Winer, A., Hajimirzaee, F., Ahn, H. and Lee, K. (2011). Protection from Scrotal Hyperthermia in Laptop Computer Users. Fertility and Sterility, 95(2), 647-651. pdf file

  10. Kimhy, D., Delespaul, P., Ahn, H., Cai, S., Shikhman, M., Lieberman, J. A., Malaspina, D. and Sloan, R. P. (2010). Concurrent Measurement of "Real World" Stress and Arousal in Individuals with Psychosis: Assessing the Feasibility and Validity of a Novel Methodology. Schizophrenia Bulletin, 36(6), 1131-1139.

  11. Lim, N., Ahn, H., Moon, H. and Chen, J. J. (2010). Classification of High-dimensional Data with Ensemble of Logistic Regression Models. Journal of Biopharmaceutical Statistics, 20, 160-171. pdf file

  12. Caso, G., Mileva, I., Kelly, P., Ahn, H., Gelato, M. C. and McNurlan, M. A. (2009). Feeding Acutely Stimulates Fibrinogen Synthesis in Healthy Young and Elderly Adults. The Journal of Nutrition, 139, 2032-2036.

  13. Essani, R., Scriven, R. J., McLarty, A. J., Merriam, L. T., Ahn, H., Bergamaschi, R. (2009). Simulated Laparoscopic Sigmoidectomy Training Responsiveness of Surgery Residents. Diseases of the Colon & Rectum, 52, 1956-1961.

  14. Kodell, R. L., Pearce, B. A., Baek, S., Moon, H., Ahn, H., Young, J. F. and Chen, J. J. (2009). A Model-Free Ensemble Method for Class Prediction with Application to Biomedical Decision Making. Artificial Intelligence in Medicine, 46, 267-276.

  15. Sheynkin, Y., Mishail, A., Vemulapalli, P., Lee, J., Ahn, H. and Schulsinger, D. (2009). Sociodemographic Predictors of Postvasectomy Noncompliance. Contraception, 80, 566-568.

  16. Young, J. F., Luecke, R. H., Pearce, B. A., Lee, T., Ahn, H., Baek, S., Moon, H., Dye, D. W., Davis, T. M. and Taylor, S. J. (2009). Human Organ/tissue Growth Algorithms that Include Obese Individuals and Black/white Population Organ Weight Similarities from Autopsy Data. Journal of Toxicology and Environmental Health, Part A, 72, 527-540. pdf file

  17. Ahn, H., Moon, H. and Kodell, R. L. (2008). Estimation of Lag Time Between Onset of and Death from an Occult Tumor. Journal of Biopharmaceutical Statistics, 18, 901-914. pdf file

  18. Baek, S., Moon, H., Ahn, H., Kodell, R. L., Lin, C. J. and Chen, J. J. (2008). Identifying High-Dimensional Biomarkers for Personalized Medicine via Variable Importance Ranking. Journal of Biopharmaceutical Statistics, 18, 853-868.

  19. Chu, A., Ahn, H., Halwan, B., Kalmin, B., Barkun, A., Lagoudakis, M. and Kumar, A. (2008). Decision Support System to Facilitate Management of Patients with Acute Gastrointestinal Bleeding. Artificial Intelligence in Medicine, 42, 247-259. pdf file

  20. Qurashi, S., Mynarcik, D. C., McNurlan, M. A., Ahn, H., Ferris, R. and Gelato, M. C. (2008). Importance of the High-Molecular-Mass Isoform of Adiponectin in Improved Insulin Sensitivity with Rosiglitazone Treatment in HIV Disease. Clinical Science, 115, 197-292.

  21. Ahn, H., Moon, H., Fazzari, M. J., Lim, N., Chen, J. J. and Kodell, R. L. (2007). Classification by Ensembles from Random Partitions of High-Dimensional Data. Computational Statistics and Data Analysis, 51, 6166-6179. pdf file

  22. Kim, W., Ahn, H. and Moon, H. (2007). A Dose-Response Test via Closed-Form Solutions for Constrained MLEs in Survival/Sacrifice Experiments. Statistics in Medicine, 26, 694-708. pdf file

  23. Moon, H., Ahn, H., Kodell, R. L., Baek, S., Lin, C., Lee, T. and Chen, J. J. (2007). Ensemble Methods for Classification of Patients for Personalized Medicine with High-Dimensional Data. Artificial Intelligence in Medicine, 41, 197-207. pdf file

  24. Chen, J. J., Tsai, C. A., Moon, H., Ahn, H. and Chen, C. H. (2006). The Use of Decision Threshold Adjustment in Class Prediction. SAR & QSAR in Environmental Research, 17, 337-351. pdf file

  25. Kimhy, D., Delespaul, P., Corcoran, C., Ahn, H., Yale, S. and Malaspina, D. (2006). Computerized Experience Sampling Method (ESMc): Assessing Feasibility and Validity in Individuals with Schizophrenia. Journal of Psychiatric Research, 40, 221-230.

  26. Moon, H., Ahn, H. and Kodell, R. L. (2006). A Computational Tool for Testing Dose-Related Trend Using an Age-Adjusted Bootstrap-Based Poly-k Test. Journal of Statistical Software, 16 (7), 1-14. pdf file

  27. Moon, H., Ahn, H., Kodell, R. L., Lin, C. J., Baek, S. and Chen, J. J. (2006). Classification Methods for the Development of Genomic Signatures from High-Dimensional Genomic Data. Genome Biology, 7, R121.1-R121.7.

  28. Baek, S., Karaman, F. and Ahn, H. (2005). Variable Selection for Heteroscedastic Data Through Variance Estimation. Communications in Statistics - Simulation and Computation. 34, 893-915. pdf file

  29. Choi, Y., Ahn, H. and Chen, J. J. (2005). Regression Trees for Analysis of Count Data with Extra-Poisson Variation. Computational Statistics and Data Analysis. 49, 893-915. pdf file

  30. Moon, H., Ahn, H., Lee, J. J. and Kodell, R. L. (2005). A Weight-Adjusted Peto's Test When Cause of Death is Not Assigned. Environmental and Ecological Statistics. 12, 95-113.

  31. Moon, H., Ahn, H. and Kodell, R. L. (2005). An Age-adjusted Bootstrap-based Poly-k test. Statistics in Medicine. 24, 1233-1244. pdf file

  32. Joo, J., Ahn, H., Delongchamp, R., Nowell, S. and Lang, N. P. (2004). A Mixture-of-genotypes Model for the Distribution of Thermostable Phenol Sulfotransferase Activity. Biometrical Journal, 46, 707-719. pdf file

  33. Joo, J., Ahn, H., Lombardo, F., Hadjiargyrou, M. and Zhu, W. (2004). Statistical Approach in the Analysis of Gene Expression Data Derived from Bone Regeneration Specific cDNA Microarrays. Journal of Biopharmaceutical Statistics, 14, 607-628. pdf file

  34. Moon, H., Ahn, H., Kodell, R. L. and Lee, J. J. (2003). Estimation of k for the Poly-k Test. Statistics in Medicine, 22, 2619-2636. pdf file

  35. Ahn, H., Moon, H., Kim, S. and Kodell, R. L. (2002). A Newton-Based Approach for Attributing Tumor Lethality in Animal Carcinogenicity Studies. Computational Statistics and Data Analysis, 38, 263-283. pdf file

  36. Hadjiargyrou, M., Lombardo, F., Zhao, S., Ahrens, W., Joo, J., Ahn, H., White, D. W. and Rubin, C. T. (2002). Transcriptional Profiling of Bone Regeneration. Journal of Biological Chemistry, 277, 30177-30182.

  37. Mancuso, J. Y., Ahn, H., Chen, J. J. and Mancuso, J. P. (2002). Age-Adjusted Exact Trend Tests in the Event of Rare Occurrences. Biometrics, 58, 403-412. pdf file

  38. Moon, H., Ahn, H. and Kodell, R. L. (2002). Extension of Peto's Test by Attribution of Tumor Lethality in the Absence of Cause-of-Death Information. Biometrical Journal, 44, 982-1001. pdf file

  39. Moon, H., Lee, J. J., Ahn, H. and Nikolova, R. G. (2002). A Web-based Simulator for Sample Size and Power Estimation in Animal Carcinogenicity Studies. Journal of Statistical Software, 7 (13), 1-36.

  40. Mancuso, J. Y., Ahn, H. and Chen, J. J. (2001). Order-Restricted Dose-Related Trend Tests. Statistics in Medicine, 20, 2305-2318. pdf file

  41. Ahn, H., Moon, H. and Kodell, R. L. (2000). Attribution of Tumor Lethality and Estimation of Time to Onset of Occult Tumors in the Absence of Cause-of-Death Information. Applied Statistics, 49, 157-169. pdf file

  42. Chang, J. Y., Ahn, H. and Chen, J. J. (2000). On Sequential Closed Testing Procedures for a Comparison of Dose Groups with a Control. Communications in Statistics - Theory and Methods, 29, 941-956. pdf file

  43. Moon, H., Ahn, H., Kodell, R. L. and Pearce, B. A. (1999). A Comparison of a Mixture Likelihood Method and the EM Algorithm for an Estimation Problem in Animal Carcinogenicity Studies. Computational Statistics and Data Analysis, 31, 227-238.

  44. Ahn, H., Zhu, W., Yang, J. and Kodell, R. L. (1998). Efficient Designs for Animal Carcinogenicity Experiments. Communications in Statistics - Theory and Methods, 27, 1275-1287. pdf file

  45. Zhu, W., Ahn, H. and Wong, W. K. (1998). Optimal Designs Versus Uniform Equal Allocation Rules in Quantal Dose Response Experiments. Communications in Statistics - Theory and Methods, 27, 1581-1592.

  46. Ahn, H. and Chen, J. J. (1997). Tree-Structured Logistic Model for Over-Dispersed Binomial Data with Application to Modeling Developmental Effects. Biometrics, 53, 435-455. pdf file

  47. Ahn, H., Chen, J. J., and Lin, T.-Y. (1997). A Two-Way Analysis of Covariance Model for Classification of Stability Data. Biometrical Journal, 39, 559-576. pdf file

  48. Chen, J. J. and Ahn, H. (1997). Marginal Models With Multiplicative Variance Components for Overdispersed Binomial Data. Journal of Agricultural, Biological and Environmental Statistics, 2, 440-450.

  49. Chen, J. J., Ahn, H., and Tsong, Y. (1997). Shelf-Life Estimation for Multifactor Stability Studies. Drug Information Journal, 31, 573-587.

  50. Kodell, R. L. and Ahn, H. (1997). An Age-adjusted Trend Test for the Tumor Incidence Rate for Multiple-Sacrifice Experiments. Biometrics, 53, 1467-1474.

  51. Kodell, R. L., Pearce, B. A., and Turturro, A. and Ahn, H. (1997). Age-adjusted Trend Test for the Tumor Incidence Rate for Single-Sacrifice Experiments. Drug Information Journal, 31, 471-487.

  52. Ahn, H. (1996). Log-gamma Regression Modeling Through Regression Trees. Communications in Statistics - Theory and Methods, 25, 295-311. pdf file

  53. Ahn, H. (1996). Log-normal Regression Modeling through Recursive Partitioning. Computational Statistics and Data Analysis, 21, 381-398. pdf file

  54. Chen, J. J. and Ahn, H. (1996). Fitting Mixed Poisson Regression Models Using Quasi-Likelihood Methods. Biometrical Journal, 38, 81-96.

  55. Kodell, R. L. and Ahn, H. (1996). Nonparametric Trend Test for the Cumulative Tumor Incidence Rate. Communications in Statistics - Theory and Methods, 25, 1677-1692.

  56. Ahn, H. and Chen, J. J. (1995). Generation of Over-Dispersed and Under-Dispersed Binomial Variates. Journal of Computational and Graphical Statistics, 4, 55-64. pdf file

  57. Ahn, H. and Kodell, R. L. (1995). Estimation and Testing of Tumor Incidence Rates in Experiments Lacking Cause-of-Death Data. Biometrical Journal, 37, 745-763. pdf file

  58. Kodell, R. L., Ahn, H., Chen, J. J., Springer, J. A., Barton, C. N., and Hertzberg, R. C. (1995). Upper Bound Risk Estimates for Mixtures of Carcinogens. Toxicology, 105, 199-208.

  59. Ahn, H. (1994). Tree-Structured Exponential Regression Modeling. Biometrical Journal, 36, 43-61. pdf file

  60. Ahn, H. (1994). Tree-Structured Extreme Value Model Regression. Communications in Statistics - Theory and Methods, 23, 153-174. pdf file

  61. Ahn, H. and Loh, W.-Y. (1994). Tree-Structured Proportional Hazards Regression Modeling. Biometrics, 50, 471-485. pdf file

  62. Chen, J. J., Ahn, H., and Cheng, K. F. (1994). Comparison of Some Homogeneity Tests in Analysis of Over-Dispersed Binomial Data. Environmental and Ecological Statistics, 1, 315-324.