Recent Papers/Publications: (grouped by general topic)

Clustering/Classification Methodology

• Dean, N. and Nugent, R. "Clustering Student Skill Set Profiles in a Unit Hypercube using
  Mixtures of Multivariate Betas" Submitted to Advances in Data Analysis and Classification, Jan 2013.
• Nugent, R. and Flynt, A. "Discussion of How to find an appropriate clustering for mixed type variables
  with application to socio-economic stratification by Hennig and Liao".
  Journal of the Royal Statistical Society: Series C (2013), Vol 63, Part 3. Forthcoming (invited).
• Rinaldo, A, Singh, A, Nugent, R, Wasserman, L. "Stability of Density-Based Clustering".
  Journal of Machine Learning Research 13 (Apr):905-948, 2012 JMLR Link
• Friedenberg, D and Nugent, R "Exploration of the Use of a Self-Tuning Diffusion Map Framework".
  International Statistical Institute Proceedings (2011) (invited). ISI 2011 IPS040.02, Jan 2012.
• Dean, N and Nugent, R "Comparing Different Clustering Methods on the Unit Hypercube".
  International Statistical Institute Proceedings (2011) (invited). ISI 2011 IPS040.03, Jan 2012.
• Nugent, R., Rinaldo, A, Singh, A, Wasserman, L. "Discussion of Stability Selection by Meinshausen and Buhlmann" Journal of the Royal Statistical Society B (2010). Vol 72, Part 4, p. 465 (authorship in alphabetical order).
• Nugent, R., Meila, M. "An Overview of Clustering Applied to Molecular Biology" Book chapter. Statistical Methods in Molecular Biology: Humana Press, Springer, 2010.
• Nugent, R., Stuetzle, W. "Clustering with Confidence: A Low-Dimensional Binning Approach."
  "Classification as a Tool for Research". Proceedings of the 11th International Federation Classification Societies Conference (refereed), Herman Locarek-Junge, Claus Weihs (editors), University of Dresden, Germany, March 13-18, 2009. Springer-Verlag, Heidelberg-Berlin, 2010, p. 117-126.
  
• Stuetzle W and Nugent R. "A generalized single linkage method for estimating the cluster tree of a density". The Journal of Computational and Graphical Statistics. (2010), Vol. 19, 2, p. 397-418.

Psychometrics/Educational Data Mining

• Ayers, E, Rabe-Hesketh, S, Nugent, R. "Incorporating Student Covariates in Cognitive Diagnosis Models". Accepted to Journal of Classification, June 2011. Forthcoming in 2013.
• Rupp, A, Nugent R, Nelson B. "Evidence-centered Design for Diagnostic Assessment within Digital Learning Environments: Integrating Modern Psychometrics and Educational Data Mining". Journal of Educational Data Mining, Volume 4, Issue 1, October 2012. Pages 1-10. link
  
• Nelson, B, Nugent R, Rupp, A. "On Instructional Utility, Statistical Methodology, and the Added Value of ECD: Lessons Learned from the Special Issue". Journal of Educational Data Mining, Volume 4, Issue 1, October 2012. Pages 224-230. link
  
• Nugent, R, Dean, N, Ayers, E. "Skill Set Profile Clustering: The Empty K-Means Algorithm with Automatic Specification of Starting Cluster Centers". Educational Data Mining 2010: 3rd International Conference on Educational Data Mining, Proceedings (refereed). Baker, R.S.J.d, Merceron, A., Pavlik, P.I. Jr.(Eds), p.151-160. link
  
• Nugent, R, Ayers, E, Dean, N. "Conditional Subspace Clustering with Skill Mastery Information: Identifying Skills that Separate Students".   Educational Data Mining 2009: 2nd International Conference on Educational Data Mining, Proceedings (refereed). Barnes, T., Desmarais, M., Romero, C., and Ventura, S. (Eds), Cordoba, Spain, July 1-3, 2009, p.101-110. link
  
• Ayers, E., Nugent, R., Dean, N. "A Comparison of Student Skill Knowledge Estimates".   Educational Data Mining 2009: 2nd International Conference on Educational Data Mining, Proceedings (refereed). Barnes, T., Desmarais, M., Romero, C., and Ventura, S. (Eds), Cordoba, Spain, July 1-3, 2009, p.1-10. link
  
• Ayers, E., Nugent, R. Dean, N. "Skill Set Profile Clustering Based on Student Capability Vectors Computed from Online Tutoring Data". Educational Data Mining 2008: 1st International Conference on Educational Data Mining, Proceedings (refereed). R.S.J.d. Baker, T. Barnes, and J.E. Beck (Eds), Montreal, Quebec, Canada. June 20-21, 2008. p.210-217. link
  

Technology and Innovation Entrepreneurship

• Yang C, Nugent R, Fuchs E. "Gains from Others' Losses: Technology Trajectories and the Global Division of Firms". Submitted to Management Science, June 2012. SSRN Link

Statistical Practice/Program Development

• Nugent, R. "Maintaining Quality in the Face of Rapid Program Expansion" Invited article for AMSTATNEWS: The Membership Magazine of the American Statistical Association. August 2012, Issue #422, p.14-15. link

Public Health

• Ngamruengphong, S, Nugent, A, Nugent, K, Nugent, R. (authorship in alphabetical order) "Case 49: Prostate-Ca-Survival." Case Files Geriatrics (LANGE Case Files), Andrew Dentino, MD (editor). McGrawHill Medical. Forthcoming (2013).
• Nourbaksh, E., Nugent, R., Wang, H., Cevik, C., and Nugent, K. "Medical Literature Searches: PubMed Central or Google Scholar?" Health Information and Libraries Journal. 2012; 29:214-22.
• Wang, H., Nugent, R. Nugent, C. Nugent, K. Phy, M. "A Commentary on the Use of the Internal Medicine In-Training Examination". The American Journal of Medicine . Vol 122, No 9, September 2009, p.879-883.
• Nugent R, Althouse A, Yaqub, Y, Hall, M, Nugent K, Raj, R. "Effect of age on the strength of association between sleep duration and body mass index in the pediatric population". Submitted to Journal of Clinical Sleep Medicine December 2009.
  
• Buscemi D, Kumar A, Nugent R, Nugent K. "Short Sleep Times Predict an Increased Body Mass Index in Internal Medicine Clinic Patients". Journal of Clinical Sleep Medicine. Vol 3, Number 7, Dec 15, 2007. 681-688.
  
• Glaser SL, Clarke CA, Keegan THM, Gomez SL, Nugent RA, Topol B, Stearns CB, Stewart SL. "Attenuation of social class and reproductive risk factors for Hodgkin lymphoma due to selection bias in controls". Cancer Causes Control: 2004; 15:731-9.
  
• Glaser SL, Clarke CA, Nugent RA, Stearns CB, Dorfman RF. "Reproductive Factors in Hodgkin's disease in women". American Journal of Epidemiology: 2003; 158(6):553-563.
  
• Glaser SL, Clarke CA, Nugent RA, Dorfman RF, Stearns CB. "Social class and risk of Hodgkin's disease in young adult women in 1988-94. International Journal of Cancer: 2002; 98(1):110-17.