Sam Woolford

  • Professor Emeritus, Mathematical Sciences
  • Ph.D. Purdue University
  • M.S. Purdue University
  • Sc. B. Brown University
  • Office: Morison Hall - 376 | 781.891.2086 | swoolford@bentley.edu
  • Department Phone: 781.891.2086 | Department Fax: 781.891.2457

Teaching Interests

Probability and statistics;
Business analytics;
Operations research;
Applied mathematics

Research Interests

Applied statistics;
Stochastic models;
Business analytics;
Performance optimization

Consulting/Practice Interests

Applied statistical analysis and modeling;
Business analytics;
Statistical modeling in market research;

Bio

Professor Woolford has more than 20 years of consulting experience using business analytics to help clients solve complex problems, improve performance and enhance their competitive position. He has applied statistical methods and operations research to market research, litigation support, customer economics, operations analysis, performance metrics, modeling and simulation. Prior to joining the faculty at Bentley, Professor Woolford held senior positions at Abt Associates Inc, KPMG LLP and Watson Wyatt Worldwide (now Willis Towers Watson) after serving on the faculty at Worcester Polytechnic Institute.

Professional Memberships

  • Institute for Operations Research and Management Sciences
  • American Society for Quality (Senior Member)
  • American Statistical Association
  • Institute of Mathematical Statistics
  • Awards and Honors

  • 2013, Distinguished Science Alumni Award, Purdue University School of Science
  • 2012, Faculty Research Grant, Bentley University
  • 2012, Summer Research Grant, Bentley University
  • 2011, Faculty Research Grant, Bentley University
  • 2011, Summer Research Grant, Bentley University
  • 1981, Fulbright Scholar
  • 1978, Sigma Xi research honor society
  • 1973, Phi Kappa Phi all discipline honor society
  • 1973, Tau Beta Pi National Engineering Honor Society
  • Publications

    Journal Articles


  • Woolford, S. W., Hadlock, C. R. (2019). Optimizing Management of Emergency Gas Leaks: A Case Study in Business Analytics. Journal of Business Analytics, (2) 1 88-99.
  • Woolford, S. W., Hamidul, M., Anderson, C., Walton, R., Ryan, L. (2018). Smooth Individual Covariates Adjustment in Disease Mapping. The Biometrical Journal, (60) 3 597-615.
  • Woolford, S. W., Biesecker, B. B., Klein, W. M., Brothers, K. B., Umstead, K. L., Lewis, K. L., Biesecker, L. G., Han, P. K. (2017). PUGS: A Novel Scale to Assess Perceptions of Uncertainties in Genome Sequencing. Clinical Genetics, (46) 8 1-23.
  • Woolford, S. W., Sparks, R., Cameron, M., Robinson, B., Power, R. (2017). An Investigation into Social Media Syndromic Monitoring. Communications in Statistics-Simulation and Computation, (46) 8 5901-5923.
  • Woolford, S. W., Sparks, R., Cameron, M., Robinson, B., Power, R., Colton, J. (2015). Syndromic Surveillance using Twitter Data. Emergency Medicine (Los Angel), (5) 3 9 pages.
  • Woolford, S. W., Bonham, V. L., Sellers, S. L. (2014). Physicians' knowledge,beliefs and use of race and human genetic variation: new measures and insights. BMC Health Services Research.
  • Yeoh, P., Eshghi, A., Woolford, S. W., Butaney, G. T. (2014). Consumer Response to Service Recovery in Online Shopping. Journal of Services Research, (14) 2
  • Woolford, S. W., Biesecker, B. B., Reeve, B. B., Erby, L. H., Young Adcock, J., Cohen, J. S., Lamb, A., Lewis, K. V., Truitt, M., Turriff, A. (2013). Development and validation of the Psychological Adaptation Scale (PAS): use in six studies of adaptation to a health condition or risk. Patient Education and Counseling, (92) 2 248-54.
  • Woolford, S. W., Moore, C., McMullen, M., Berger, B. (2013). Process, cost and clinical quality: the initial oral contraceptive visit. American Journal of Managed Care, (19) 1 14-21.
  • Woolford, S. W., Josephy, N. H. (2013). A note on the asymptotic behavior of a nonlinear system of stochastic difference equations. Advances and Applications in Statistics, (33) 1 23-35.
  • Woolford, S. W., Haughton, D. M., Li, M., Senne, L. P., Skaletsky, M. ., Eshghi, A. (2012). Enrollment management in graduate business programs: predicting student retention. Journal of Institutional Research, (16) 2 63-79.
  • Josephy, N. H., Predescu, M., Woolford, S. W. (2011). A note on the global behavior of a nonlinear system of difference equations. Australian Journal of Mathematical Analysis and Applications, (8) 1 1-19.
  • Josephy, N. H., Predescu, M., Woolford, S. W. (2011). Parameter Estimation in a System of Stochastic Difference Equations. Advances and Applications in Statistics, (24) 1 49-66.
  • Eshghi, A., Haughton, D. M., Legrand, P., Skaletsky, M. ., Woolford, S. W. (2011). Identifying Groups: A Comparison of Methodologies. Journal of Data Science, (9) 2 271-291.
  • Woolford, S. W., Wade, C., Shiloh, S., Roberts, J., Hensley Alford, S., Marteau, T., Biesecker, B. (2011). Modeling decisions to undergo genetic testing for susceptability to common health conditions. Psychology and Health.
  • Predescu, M., Woolford, S. W., , . (2010). On the stability character of a nonlinear system of difference equations. Far East Journal of Applied Mathematics, (49) 1 1-15.
  • Jenkins, J., Woolford, S. W., Stevens, N., Kahn, N., McBride, C. (2010). The adoption of genomic-related innovations by family physicians. Case Studies in Business, Industry and Government Statistics, (3) 2 70-78.
  • Cleary, R. J., Woolford, S. W. (2010). The business of desire and fear. The American Statistician, (64) 1 21-22.
  • Moore, C. L., McMullen, M. J., Woolford, S. W., Berger, B. M. (2010). Clinical process variation: effect on quality and unit cost. American Journal of Managed Care, (16) 5 385-392.
  • Woolford, S. W. (2009). A quality assessment tool for improvement planning. International Journal of Productivity and Quality Management, (4) 5-6 644-657.
  • Haughton, D. M., Legrand, P., Woolford, S. W. (2009). Review of Three Latent Class Cluster Analysis Packages: Latent Gold, poLCA, and MCLUST. The American Statistician, (63) 1 81-91.
  • Lee, W. C., Joshi, A. V., Woolford, S. W., Sumner, M., Hadker, N., Pashos, C. L. (2008). Physicians' preferences toward coagulation factor concentrates in the treatment of Haemophilia with inhibitors: a discrete choice experiment. Haemophilia, (14) 3 454-465.
  • McBride, C., Puleo, E., Pollak, K. I., Clipp, E. C., Woolford, S. W., Emmons, K. M. (2008). Understanding the role of cancer worry in creating a "teachable moment" for multiple risk factor reduction. Social Science & Medicine, (66) 3 790-800.
  • Deichmann, J. I., Eshghi, A., Haughton, D. M., Woolford, S. W., Sayek, S. (2007). Measuring the International Digital Divide: An Application of Kohonen Self-Organizing Maps. International Journal of Knowledge and Learning, (3) 6 552-575.
  • Woolford, S. W., Kosakowski, B., Wasserman, S. (1996). You Are What You Measure. Plan Sponsor. September 70-71.
  • Woolford, S. W., Petruccelli, J. D. (1987). On a Class of Threshold AR(k) Processes. Annals of Operations Research, (9) 421-436.
  • Woolford, S. W. (1986). Limit Distributions for Functionals of Random Partial Sums. Sankya: The Indian Journal of Statistics, (48) 69-85.
  • Woolford, S. W., Petruccelli, J. D., Chan, K. S., Tong, H. (1985). A Multiple Threshold AR(1) Model. Journal of Applied Probability, (22) 267-279.
  • Woolford, S. W. (1984). On the Control of a Generalized Storage Model. Journal of Optimization Theory and Applications, (44) 137-157.
  • Woolford, S. W., Petruccelli, J. D. (1984). A Threshold AR(1) Model. Journal of Applied Probability, (21) 270-286.
  • Woolford, S. W. (1983). On a generalized finite capacity storage model. Journal of Applied Probability, (20) 663-674.
  • Woolford, S. W., Puri, P. S. (1981). On a generalized storage model with moment assumptions. Journal of Applied Probability, (18) 473-481.

    Conference Proceedings


  • Woolford, S. W.Cleary, R. J. (2009). Statistics for Business Researchers American Statistical Association, (2009 Joint Statistical Meeting)
  • Woolford, S. W.Jamieson, W. (2003). Killing Two Birds with One Stone: Using the Internet to Capture Customer and Competitive Data Simultaneously Frost & Sullivan, (Advanced Marketing Research as a Strategic Imperative:6th Annual Executive Summit East)
  • Woolford, S. W. (2002). Customer Profitability Management: Linking the Voice of the Customer to financial Results Institute for International Research, (13th Annual Conference on Measuring & Improving Customer Satisfaction)
  • Woolford, S. W. (2002). Customer Profitability: Linking Marketing, Finance and Strategy to Improve Return on Customer Data Frost & Sullivan, (Structuring Competitive Intelligence for Greater Bottom Line Impact)
  • Woolford, S. W.Salter, J. M. (2002). Customer Profitability Management: Data Mining for Dollars Frost & Sullivan, (Advanced Marketing Research 5th Annual Executives Summit West)
  • Woolford, S. W. (2000). Tax 2000: Optimizing the Value of the Tax Function Tax Executive Institute, (Tax Executive Institute)
  • Woolford, S. W. (1999). The Balanced Scorecard: Measuring HR Performance IHRIM, (19th Annual Spring Conferenece)
  • Woolford, S. W.DeLaney-Woolford, G. (1999). The Balanced scorecard: A Driver for Performace Improvement Institute of industrial Engineers, (11th Annual Quest for Quality and Productivity in Health Services)

  • Conference Papers


  • Woolford, S. W. (2011). Parameter Estimation in a Stochastic Nonlinear System of Difference EquationsAmerican Statistical Association, Joint Statistical Meetings.
  • Woolford, S. W., Haughton, D. M., Legrand, P., Skaletsky, M. . (2010). Identifying Groups: A Comparison of Segmentation MethodologiesAmerican Statistical Association, 2010 Joint Statistical Meetings.
  • Woolford, S. W. (2007). A Qaulity Assessment Tool for Improvement PlanningMathematics Department, Bentley Seminar.
  • Woolford, S. W. (2007). A Quality Assessment Tool to Support Improvement PlanningAmerican Statistical Association, Quality and Productivity Research Conference.

  • Other(s)


  • Woolford, S. W., McNabb, R. (1993). The Quality Process: A Survey on the Effects of Quality Improvement on Employee Issues in Manufacturing OrganizationsManufacturers Alliance for Productivity and Innovation. 36.
  • Presentations

  • Woolford, S. W. (2017). “Business Analytics and its Role in Innovation and Strategy” Presented at the Bentley University HHL (Leipzig) Visiting MBA Students Bentley University
  • Woolford, S. W., Sparks, R. (2017). “Case Studies on Social Media Data Use” Presented at the The Bentley Data Innovation Network Social Media Monitoring Colloquium Bentley University
  • Hadlock, C. R., Woolford, S. W. (2017). “Managing the Response to Gas Leaks: a Case Study in Business Analytics” Presented at the American Statistical Association Joint Statistical Meetings Baltimore, MD
  • Woolford, S. W. (2016). “Latent Class Modeling (aka Finite Mixture Modeling)” Presented at the SBRB of The National Human Genome Research Institute at The National Institutes of Health Seminar Bethesda, MD
  • Woolford, S. W. (2016). “Business Analytics and Implications for Applied Statistics Education” Presented at the American Statistical Association Joint Statistical Meetings Chicago Il
  • Woolford, S. W. (2015). “Structural Equation Modeling (SEM) in the Business/Policy Context” Presented at the American Statistical Association Joint Statistical Meetings Seattle WA
  • Woolford, S. W. (2013). “Process, Cost and Clinical Quality: Improving US Healthcare” Presented at the University of Technology Sydney UTS Statistics Department Seminar Series Sydney Australia
  • Woolford, S. W. (2013). “The Opportunities for Business Analytics” Presented at the Commonwealth Scientific and Industrial Research Organization (CSIRO) CSIRO Computational Informatics and Statistics North Ryde, New South Wales, Australia
  • Woolford, S. W. (2013). “The Opportunities for Business Analytics” Presented at the Statistics Society of Australia Meeting of the New South Wales Region of the Statistics Society of Australia Sydney, Australia
  • Woolford, S. W. (2013). “Business Analytics and the Opportunity for Applied Statisticians” Presented at the Purdue University Department of Statistics Department of Statistics Seminar Series West Lafayette, IN
  • Woolford, S. W. (2012). “Asymptotic Behavior of a Stochastic Population Model” Presented at the American Statistical Association Joint Statistical Meetings San Diego, CA
  • Woolford, S. W. (2011). “Parameter Estimation in a Stochastic Nonlinear System of Difference Equations” Presented at the American Statistical Association Joint Statistical Meetings Miami, FL
  • Woolford, S. W., Haughton, D. M., Legrand, P., Skaletsky, M. . (2010). “Identifying Groups: A Comparison of Segmentation Methodologies” Presented at the American Statistical Association 2010 Joint Statistical Meetings Vancouver, BC
  • Woolford, S. W., Cleary, R. J. (2009). “Statistics for Business Researchers” Presented at the American Statistical Association 2009 Joint Statistical Meeting Washington DC
  • Woolford, S. W. (2009). “Academic Consulting Centers Serving Commercial Clients” Presented at the American Statistical Association 2009 Joint Statistical Meetings Washington, DC
  • Woolford, S. W. (2007). “A Qaulity Assessment Tool for Improvement Planning” Presented at the Mathematics Department Bentley Seminar Waltham, MA
  • Woolford, S. W. (2007). “A Quality Assessment Tool to Support Improvement Planning” Presented at the American Statistical Association Quality and Productivity Research Conference Santa Fe, New Mexico
  • Woolford, S. W. (2006). “Latent Class Analysis with Applications to Market Research” Presented at the Quantitative Methods Group Quantitative Methods Waltham, MA
  • Woolford, S. W., Jamieson, W. (2003). “Killing Two Birds with One Stone: Using the Internet to Capture Customer and Competitive Data Simultaneously” Presented at the Frost & Sullivan Advanced Marketing Research as a Strategic Imperative:6th Annual Executive Summit East Boston, MA
  • Woolford, S. W. (2002). “Customer Profitability Management: Linking the Voice of the Customer to financial Results” Presented at the Institute for International Research 13th Annual Conference on Measuring & Improving Customer Satisfaction Chicago, IL
  • Woolford, S. W., Salter, J. M. (2002). “Customer Profitability Management: Data Mining for Dollars” Presented at the Frost & Sullivan Advanced Marketing Research 5th Annual Executives Summit West San Antonio, TX
  • Woolford, S. W. (2002). “Customer Profitability: Linking Marketing, Finance and Strategy to Improve Return on Customer Data” Presented at the Frost & Sullivan Structuring Competitive Intelligence for Greater Bottom Line Impact Orlando, FL
  • Woolford, S. W. (2000). “Tax 2000: Optimizing the Value of the Tax Function” Presented at the Tax Executive Institute Tax Executive Institute Detroit, MI
  • Woolford, S. W., DeLaney-Woolford, G. (1999). “The Balanced scorecard: A Driver for Performace Improvement” Presented at the Institute of industrial Engineers 11th Annual Quest for Quality and Productivity in Health Services Washington, DC
  • Woolford, S. W. (1999). “The Balanced Scorecard: Measuring HR Performance” Presented at the IHRIM 19th Annual Spring Conferenece Salt Lake City, Utah
  • Woolford, S. W. (1997). “Best Practices in Benefits” Presented at the IHRIM International Association for Human Resource Information Management Framingham, MA
  • Service

    Professional Service


  • Board of Advisors of a Company for National Institute of Statistical Sciences 2016 - Present
  • Committee Member for Purdue Statistics Advisory Board 2014 - Present
  • Board of Advisors of a Company for Ninah Advisory Board Member 2014 - 2016