Associate Professor 21 McAlester Hall (573)-882-2583 steinleyd@missouri.edu

My research focuses on multivariate statistical methodology, with a primary interest in cluster analysis and social network analysis. My research in cluster analysis focuses on both traditional cluster analytic procedure (e.g., k-means cluster analysis) and more modern techniques (e.g., mixture modeling). In that the formulation of the general partitioning problem can be thought of in a graph theoretic nature, my research also involves combinatorics and social network analysis.

IN PRESS
Brusco, M. J., Singh, R., & Steinley, D. (in press). Variable neighborhood search heuristics for selecting a subset of variables in principal components analysis. Psychometrika.

Brusco, M. J., & Steinley, D. (in press). K-balance partitioning: An exact method with applications to generalzied structural balance and other psychological constructs. Psychological Methods.

Brusco, M. J., & Steinley, D. (in press). Integer programs for one- and two-mode blockmodeling based on prespecified image matrices for structural and regular equivalence. Journal of Mathematical Psychology.

Brusco, M. J., & Steinley, D. (in press). Hierarchically well-formulated best subsets for polynomial regression: A variable neighborhood search heuristic wtih embedded constrained tabu search. Naval Logistics Quarterly.

Cain, A. S., Epler, A. J., Steinley, D., & Sher, K. (in press). Longitudinal patterns of weight/shape self-judgment and eating-related behavior in young adult women: A latent transition analysis. Journal of Abnormal Psychology

Hubert, L., Koehn, H.-F., & Steinley, D. (in press). Order-constrained proximity matrix representations: Ultrametric
generalizations and constructions with MATLAB. In S. Kolenikov, D. Steinley, & L. Thombs (Eds.), Current methodological developments of statistics in the social sciences, (pp. xx-xx). New York: Wiley.

Kohn, H.-F., Steinley, D., & Brusco, M. J. (in press). The p-median model as a tool for clustering psychological data. Psychological Methods.

Rouder, J. N., Speckman, P., Steinley, D., Pratte, M.S., & Morey, R. D. (in press). A resampling test of shape invariance across distributions. In S. Kolenikov, D. Steinley, & L. Thombs, (Eds.), Current methodological developments of statistics in the social sciences, (pp. xx-xx). New York: Wiley.

Steinley, D., & Brusco, M. J. (in press). Evaluating the performance of model-based clustering: Recommendations and cautions. Psychological Methods.

2009
Brusco, M. J., & Steinley, D. (2009). Cross validation issues in multiobjective clustering. British Journal
of Mathematical and Statistical Psychology, 62, 349-368.

Brusco, M. J., Steinley, D., & Cradit, J. D. (2009). Best subsets regression using branch-and-bound methods: Model selection criteria, computational feasibility, and extension to polynomial regression. Technometrics, 51, 306-315.

Hubert, L., Koehn, H.-F., & Steinley, D. (2009). Cluster analysis: A toolbox for MATLAB. In R. Millsap &
A. Maydeu-Olivares (Eds.), Handbook of quantitative methods in psychology, (pp. 444-512). Rivserside, CA: Sage.

Steinley, D. (2009). Correspondence Analysis and Data Coding with Java and R by Fionn Murtagh (2005).
Psychometrika.

2008
Brusco, M. J., Cradit, J. D., Steinley, D., & Fox, G. (2008). Cautionary remarks on the use of clusterwise regression. Multivariate Behavioral Research, 43, 29-49.

Brusco, M. J., Stahl, S., & Steinley, D. (2008). An implicit enumeration method for an exact test of weighted Kappa. British Journal of Mathematical and Statistical Psychology, 61, 439-452.

Brusco, M. J., & Steinley, D. (2008). A binary integer program to maximize the agreement between partitions. Journal of Classification, 25, 185-193.

Steinley, D. (2008). Stability analysis in K-means clustering. British Journal of Mathematical and Statistical Psychology, 61, 255-273.

Steinley, D., & Brusco, M. J. (2008). A new variable weighting and selection procedure for K-means cluster analysis.
Multivariate Behavioral Research, 43, 77-108.

Steinley, D., & Brusco, M. J. (2008). Selection of variables in cluster analysis: An empirical comparison of eight
procedures. Psychometrika, 73, 125-144.

Steinley, D., & Hubert, L. (2008). Order constrained solutions in K-means clustering: Even better than being globally optimal. Psychometrika, 73,647-664.

2007
Brusco, M. J., & Steinley, D. (2007). Exact and approximate algorithms for part-machine clustering based on a
relationship between interval graphs and Robinson matrices. IIE Transactions, 39, 925-935. LEAD ARTICLE

Brusco, M. J., & Steinley, D. (2007). An evaluation of a variable-neighborhood search method for blockmodeling of
two-mode binary matrices based on structural equivalence. Journal of Mathematical Psychology, 51, 325-338.

Brusco, M. J., & Steinley, D. (2007). A comparison of heuristic procedures for minimum within-cluster sums of squares
partitioning. Psychometrika, 72, 583-600.

Morrow, D., Weiner, M., Steinley, D., Young, J., & Murray, M.D. (2007). Patients' health literacy and experience with
instructions: Influence preferences for heart failure medication instructions. Journal of Aging and Health, 19, 575-593.

Steinley, D. (2007). Validating clusters with the lower bound for sum of squares error. Psychometrika, 72, 93-106.

Steinley, D. (2007). A review of six classification society meetings: 2003--2006. Journal of Classification, 23, 169-172.

Steinley, D., & Brusco, M. J. (2007). Initializing K-means batch clustering: A critical evaluation of several techniques. Journal of Classification, 24, 99-121.

Steinley, D., & McDonald, R. P. (2007). Examining factor score distributions to determine the nature of latent spaces.
Multivariate Behavioral Research, 42, 133-156.

Swenson, L. P., Esposito-Smythers, C., Hunt, J. I., Hollander, B., Dyl, J., Rizzo, C. J., Steinley, D. & Spirito, A. (2007). Validation of the Children's Interview for Psychiatric Syndromes (ChIPS) with psychiatrically hospitalized adolescents. Journal of the American Academy of Child & Adolescent Psychiatry, 46, 1482-1490.

Wasserman, S., Robins, G., & Steinley, D. (2007). Statistical models for networks: A brief review of some recent
research. In E. Airoldi, D. M. Blei, S. E. Fienberg, A. Goldenberg, E. P. Xing, & A. X. Zheng (Eds.), Social network analysis: Models, issues, and new directions (pp. 45-56). New York: Springer.

2006
Brusco, M. J., & Steinley, D. (2006). Inducing a blockmodel structure on two-mode data using seriation procedures.
Journal of Mathematical Psychology, 50, 468-477.

Brusco, M. J., & Steinley, D. (2006). Clustering, seriation, and subset extraction of confusion data. Psychological Methods, 11, 271-286.

Morrow, D., Clark, D., Tu, W., Wu, J., Young, J., Weiner, M., Steinley, D., & Murray, M. (2006). Correlates of health
literacy in patients with chronic heart failure. The Gerontologist, 46, 669-676.

Steinley, D. (2006). K-means clustering: A half-century synthesis. British Journal of Mathematical and Statistical Psychology, 59, 1-34. LEAD ARTICLE

Steinley, D. (2006). Profiling local optima in K-means clustering: Developing a diagnostic technique. Psychological Methods, 11, 178-192.

Steinley, D. (2006). Comparative review of "Categorical Data Analysis with SAS and SPSS Applications'' and "Categorical Data analysis Using The SAS System. 2nd ed.'' Journal of the American Statistical Association, 101, 400.

Steinley, D. (2006). A review of three classification society meetings: 2001-2002. Journal of Classification,
23, 169-172.

Steinley, D. (2006). Curse of dimensionality. In N. J. Salkind (Ed.), Encyclopedia of Measurement and Statistics (pp. 209-211). Thousand Oaks, CA: Sage.

Steinley, D. (2006). Eigenvalues. In N. J. Salkind (Ed.), Encyclopedia of Measurement and Statistics (pp. 309-310). Thousand Oaks, CA: Sage.

Steinley, D., & Wasserman, S. (2006). Approximate distributions of several common graph statistics: Hypothesis
testing applied to a terrorist network. Proceedings of the American Statistical Association, Statistical Applications in Defense and National Security. Santa Monica, CA: Rand Corporation.

2005
Hubert, L., & Steinley, D. (2005). Agreement among Supreme Court justices: Categorical vs. continuous representation. SIAM News, 38(8), 4-7.

Morrow, D. G., Weiner, M. W., Young, J., Steinley, D., Deer, M., & Murray, M. D. (2005). Improving medication knowledge among older adults with heart failure: A patient-centered approach to instruction design. The Gerontologist, 45, 545-552.

Steinley, D., & Henson, R. (2005). OCLUS: An analytic method for generating clusters with known overlap. Journal of Classification, 22, 221-250.

Wasserman, S., Pattison, P., & Steinley, D. (2005). Social network analysis. In Everett, B., \& Howell, D. (eds.)
Encyclopedia of Statistics in the Behavioral Science, Vol. 4, 1866-1871. New York: Wiley.

2004
Steinley, D. (2004). Properties of the Hubert-Arabie adjusted Rand index. Psychological Methods, 9, 386-396.

Steinley, D. (2004). Standardizing variables in K-means clustering. In D. Banks, L. House, F. R. McMorris, P. Arabie, &
W. Gaul (eds.), Classification, clustering, and data mining applications (pp. 53-60). New York: Springer.

2003
Morrow, D., Weiner M., Young, J., Steinley, D., & Murray, M. D. (2003). Improving comprehension of medication instructions in older adults with heart failure using a patient-centered approach. Proceedings of the Human Factors and Ergonomics Society 47th Annual Meeting (pp. 232-236). Santa Monica CA: Human Factors and Ergonomics Society.

Steinley, D. (2003). Local optima in K-means clustering: What you don't know may hurt you. Psychological Methods, 8, 294-304.

Steinley, D., & Wasserman, S. (2003). From the bookshelf: Short reviews of important books. Chance, 16, 37-38.

Wasserman, S., & Steinley, D. (2003). Sensitivity analysis of social network data and methods: Some preliminary remarks. In R. Breiger, K. Carley, & P. Pattison (eds.) Dynamic social network modeling and analysis (pp. 197-208). Washington DC: The National Academies Press.

2002
Steinley, D., & Wasserman, S. (2002). From the bookshelf: Short reviews of important books. Chance, 15, 36-38.