Portrait Photo

Gary J Koehler

Emeritus

University of Florida
Warrington College of Business
Information Systems and Operations Management Department
Stuzin Hall 351A
PO Box 117169
Gainesville, FL 32611

(352) 514-9156
Email | Homepage

Biography

Professor Koehler originally joined the University of Florida faculty in 1974 and rejoined in 1987 after leaving in 1978. He served as Chair of the department for the period 1990 –1993 and 2009-2011. His recent teaching has been in business objects, quantum computing, Java, C#, support vector machines, genetic algorithm theory and e-commerce for the department’s graduate programs. Professor Koehler has also been a faculty member at Purdue and Northwestern Universities, has worked as a consultant and expert witness for a number of firms, and was a co-founder of Micro Data Base Systems, Inc. in 1979, a firm in which he served as CEO for the period 1981 - 1987.

Education

  • PhD - Managment Science, Purdue University, 1973
  • MS - Physiology, Purdue University, 1970
  • BSc - Chemistry, Purdue University, 1969

Research Areas

  • Machine Learning
  • Scheduling
  • E-Commerce
  • Genetic Algorithm Theory
  • Data-Mining
  • Expert Systems
  • Computer-Aided Decision Systems
  • Large-Scale Optimization
  • Markov Decision Theory

Optimization Over Leontief Substitution Systems
Published Year: 1975
Authors: Gary Koehler, Andrew Whinston, Gordon Wright

Systems for Strategic Learning
Published Year: 2008
Authors: Fidan Boylu, Haldun Aytug, Gary Koehler, F. Burstein, C. Holsapple


Mining Message Board Content on the World Wide Web for Organizational Information
Published Year: 2004
Authors: C Barko, C. Aasheim, H Nemati, Gary Koehler


Information Privacy and e-Business Activities: Key Issues for Managers
Published Year: 2003
Authors: J. Rees, Gary Koehler, Yasin Ozcelik, S. Sharma, J. Gupta


A Study on Coefficient Reduction of Binary Knapsack Inequalities
Published Year: 2001
Authors: C Holsapple, H Raghav Rao, Gary Koehler


Electronic Commerce: Privacy, Security, and Control
Published Year: 2000
Authors: D Conway, Gary Koehler


An Investigation of GA Performance Results for Different Cardinality Alphabets
Published Year: 1999
Authors: J Rees, Gary Koehler


Diagonalizing the Simple GA Mixing Matrix
Published Year: 1997
Authors: Gary Koehler

Using Genetic Algorithms to Solve the Strategic Learning Problem
Accepted Year: 2006
Authors: Fidan Boylu, Haldun Aytug, Gary Koehler


Learning in the Presence of Self-Interested Agents
Published Year: 2005
Authors: Haldun Aytug, Fidan Boylu, Gary Koehler


Web Service Provider Location, Sever Allocation Problem in a Competitive Environment
Published Year: 2005
Authors: R Aboolian, Y. Sun, Gary Koehler


Brainstorming, Negotiating and Learning in Group Decision Support Systems: An Evolutionary Approach
Published Year: 1999
Authors: J Rees, Gary Koehler


Computing Simple GA Expected Waiting Time
Published Year: 1999
Authors: Gary Koehler


An Investigation of GA Performance Results from Different Cardinality Alphabets
Published Year: 1996
Authors: J Rees, Gary Koehler


Object-Case Retrieval for Intelligent Decision Support
Published Year: 1995
Authors: S. Bhattacharyya, Gary Koehler


Artificial Stupidity
Published Year: 1994
Authors: H.R. Fogler, Gary Koehler


Decision Tree and Rule Algorithms for Investing
Accepted Year: 1994
Authors: Gary Koehler, H Fogler


When will Enterprise Integration be a Reality
Published Year: 1993
Authors: Gary Koehler


A Convergent Neural Network Learning Algorithm
Published Year: 1992
Authors: Z Tang, Gary Koehler


A Machine Learning Approach to Principal-Agent Problems in the Electric Utility Industry
Published Year: 1991
Authors: K.K. Garimella, Gary Koehler


Global Optimization using Neural Nets
Published Year: 1991
Authors: Z Tang, Gary Koehler


Embedded High-performance Inference Engines
Published Year: 1988
Authors: Gary Koehler


High Transaction Embedded Inference Engines
Published Year: 1988
Authors: Gary Koehler


The Transition to Expert Systems
Published Year: 1987
Authors: Gary Koehler


A Case for Relaxation Methods in Large-Scale Linear Programming
Published Year: 1976
Authors: Gary Koehler


An Oxygen and Pressure-Sensitive Enzyme: Na-K Adenosine Triphosphatase
Published Year: 1976
Authors: S.F. Gottlieb, Gary Koehler, L.B.G. Rhodes


Imputing Parameters of a Payoff Function from Decision Rules Estimated by Regression
Published Year: 1974
Authors: H Moskowitz, Gary Koehler


Matrix Iterative Techniques in Large-Scale Linear Programming
Published Year: 1973
Authors: Gary Koehler, A.B. Whinston, G.P. Wright


Effects of Oxygen, Nitrogen, and Helium on the Na+ - K+ Activated ATPase of Rat Intestine
Published Year: 1970
Authors: S.F. Gottlieb, Gary Koehler

A Computational Analysis of Bundle Trading Markets Design for Distributed Resource Allocation
Journal: Information Systems Research
Published Year: 2012
Authors: Zhiling Guo, Gary Koehler, Andrew Whinston


A Hybrid Method for Quantum Global Optimization
Journal: Journal of Global Optimization
Published Year: 2012
Authors: Yipeng Liu, Gary Koehler


Making Words Work: Using Financial Text as a Predictor of Financial Events
Journal: Decision Support Systems and Electronic Commerce
Published Year: 2011
Authors: M. Cecchini, H. Aytug, G. Koehler, P. Pathak


Entertainment without Borders: The Impact of Digital Technologies on Government Cultural Policy
Journal: Journal of Management Information Systems
Published Year: 2011
Authors: Hsing Cheng, Jane Feng, Gary Koehler, Sean Marston


Minimal Equivalent Binary Knapsack Inequalities
Journal: INFORMS Journal on Computing
Published Year: 2011
Authors: Gary Koehler


Data Mining with Agent Gaming
Journal: Information Technology and Management
Published Year: 2010
Authors: F Boylu, H Aytug, Gary Koehler


Detecting Management Fraud in Public Companies
Journal: Management Science
Published Year: 2010
Authors: Mark Cecchini, Haldun Aytug, Gary Koehler, Praveen Pathak


Disclosure Control of Confidential Data by Applying PAC Learning Theory
Journal: Journal of Database Management
Published Year: 2010
Authors: Ling He, Haldun Aytug, Gary Koehler


Induction over Constrained Strategic Agents
Journal: European Journal of Operational Research
Published Year: 2010
Authors: Fidan Boylu, Haldun Aytug, Gary Koehler


Using Modifications to Grover's Search Algorithm for Quantum Global Optimization
Journal: European Journal of Operational Research
Published Year: 2010
Authors: Yipeng Liu, Gary Koehler


Induction over Strategic Agents
Journal: Information Systems Research
Published Year: 2010
Authors: Fidan Boylu, Haldun Aytug, Gary Koehler


Induction over Strategic Agents: A Genetic Algorithm Solution
Journal: Annals of Operations Research
Published Year: 2010
Authors: Fidan Boylu, Haldun Aytug, Gary Koehler


Principal-Agent Learning
Journal: Decision Support Systems and Electronic Commerce
Published Year: 2009
Authors: Fidan Boylu, Haldun Aytug, Gary Koehler


Using Domain-Specific Knowledge in Generalization Error Bounds for Support Vector Machine
Journal: Decision Support Systems and Electronic Commerce
Published Year: 2009
Authors: Enes Eryarsoy, Haldun Aytug, Gary Koehler


A Location-Allocation Problem for a Web Services Provider in a Competitive Market
Journal: European Journal of Operational Research
Published Year: 2009
Authors: Robert Aboolian, Yi Sun, Gary Koehler


A Survey of Quantum Games
Journal: Decision Support Systems and Electronic Commerce
Published Year: 2008
Authors: Hong Guo, Juheng Zhang, Gary Koehler


Caveat Mercator in Electronic Commerce: An Update
Journal: Decision Support Systems and Electronic Commerce
Published Year: 2008
Authors: Daniel Conway, Gary Koehler


Introducing a Feasible-Infeasible Two-Population (FI-2Pop) Genetic Algorithm for Constrained Optimization: Distance Tracing and No Free Lunch
Journal: European Journal of Operational Research
Published Year: 2008
Authors: Steve Kimbrough, Gary Koehler, M Lu, David Wood


Systems for Strategic Learning
Journal: Information Systems and E-business Management
Published Year: 2008
Authors: Fidan Boylu, Haldun Aytug, Gary Koehler


Risk Minimization and Minimum Description for Linear Discriminant Functions
Journal: INFORMS Journal on Computing
Published Year: 2008
Authors: Haldun Aytug, L He, Gary Koehler


A General Steady State Distribution based Stopping Criteria for Finite Length Genetic Algorithms
Journal: European Journal of Operational Research
Published Year: 2007
Authors: P Pendharkar, Gary Koehler


A Market-Based Optimization Algorithm for Distributed Systems
Journal: Management Science
Published Year: 2007
Authors: Z Guo, Gary Koehler, A.B. Whinston


Conditions that Obviate the No Free Lunch Theorems for Optimization
Journal: INFORMS Journal on Computing
Published Year: 2007
Authors: Gary Koehler


The Effect of Multiple Optima on the Simple GA Run-time Complexity
Journal: European Journal of Operational Research
Published Year: 2007
Authors: Haldun Aytug, Gary Koehler


A Location Model for a Web Service Intermediary
Journal: Decision Support Systems and Electronic Commerce
Published Year: 2006
Authors: Y Sun, Gary Koehler


Learning Genetic Algorithm Parameters Using Hidden Markov Models
Journal: European Journal of Operational Research
Published Year: 2006
Authors: J Rees, Gary Koehler


Market Segmentation within Consolidated E-Markets: A Generalized Combinatorial Auction Approach
Journal: Journal of Management Information Systems
Published Year: 2006
Authors: J Jones, R Easley, Gary Koehler


Scanning World Wide Web Documents with the Vector Space Model
Journal: Decision Support Systems and Electronic Commerce
Published Year: 2006
Authors: C. Aasheim, Gary Koehler


A Heuristic for Winner Determination in Rule-Based Combinatorial Auctions
Journal: INFORMS Journal on Computing
Published Year: 2005
Authors: J Jones, Gary Koehler


Modeling Search in Group Decision Support Systems
Journal: IEEE Transactions on Systems, Man, and Cybernetics, Part C: Applications & Reviews
Published Year: 2004
Authors: J Rees, Gary Koehler


Pricing Combinatorial Auctions
Journal: European Journal of Operational Research
Published Year: 2004
Authors: M Xia, Gary Koehler, A.B. Whinston


Optimal Pricing Policies of Web-enabled Application Services
Journal: Decision Support Systems and Electronic Commerce
Published Year: 2003
Authors: H.K. Cheng, Gary Koehler


Price and Capacity Competition of Application Services Duopoly
Journal: Information Systems and E-business Management
Published Year: 2003
Authors: Hsing Cheng, H Demirkan, Gary Koehler


An Evolutionary Approach to Group Decision Making
Journal: INFORMS Journal on Computing
Published Year: 2002
Authors: J Rees, Gary Koehler


Combinatorial Auctions using Rule-Based Bids
Journal: Decision Support Systems and Electronic Commerce
Published Year: 2002
Authors: Joni Jones, Gary Koehler


Evolution in Groups: A Genetic Algorithm Approach to Group Decision Support Systems
Journal: Information Technology and Management
Published Year: 2002
Authors: J Rees, Gary Koehler


Interface Agents: Caveat Mercator in Electronic Commerce
Journal: Decision Support Systems and Electronic Commerce
Published Year: 2000
Authors: D Conway, Gary Koehler


Leadership and Group Search in Group Decision Support Systems
Journal: Decision Support Systems and Electronic Commerce
Published Year: 2000
Authors: J Rees, Gary Koehler


New Stopping Criterion for Genetic Algorithms
Journal: European Journal of Operational Research
Published Year: 2000
Authors: Haldun Aytug, Gary Koehler


Genetic Learning Through Simulation: An Investigation in Shop-Floor Scheduling
Journal: Annals of Operations Research
Published Year: 1998
Authors: Haldun Aytug, S Bhattacharyya, Gary Koehler


Learning by Objectives for Adaptive Shop-Floor Scheduling
Journal: Decision Sciences
Published Year: 1998
Authors: S. Bhattacharyya, Gary Koehler


A Markov Chain Analysis of General Cardinality Genetic Algorithms with Power of 2 Cardinality Alphabets
Journal: European Journal of Operational Research
Published Year: 1997
Authors: Haldun Aytug, S Bhattacharyya, Gary Koehler


Artificial Stupidity
Journal: Journal of Portfolio Management
Published Year: 1997
Authors: C Murphy, H.R. Fogler, Gary Koehler


Artificial Stupidity: Reply to Comment
Journal: Journal of Portfolio Management
Published Year: 1997
Authors: C Murphy, H Fogler, Gary Koehler


General Cardinality Genetic Algorithms
Journal: Evolutionary Computation
Published Year: 1997
Authors: Gary Koehler, Siddhartha Bhattacharyya, Michael Vose


New Directions in Genetic Algorithm Theory
Journal: Annals of Operations Research
Published Year: 1997
Authors: Gary Koehler


PAC-Learning a Decision Tree with Pruning
Journal: European Journal of Operational Research
Published Year: 1996
Authors: H Kim, Gary Koehler


Stopping Criteria for Finite Length Genetic Algorithms
Journal: INFORMS Journal on Computing
Published Year: 1996
Authors: Haldun Aytug, Gary Koehler


Theory and Practice of Decision Tree Induction
Journal: OMEGA - The International Journal of Management Science
Published Year: 1995
Authors: Hyunsoo Kim, Gary Koehler


A Proof of the Vose-Liepins Conjecture
Journal: Annals of Mathematics and Artificial Intelligence
Published Year: 1994
Authors: Gary Koehler


A Response to Xiao's 'Necessary and Sufficient Conditions of Unacceptable Solutions in LP Discriminant Analysis': Something is Amiss
Journal: Decision Sciences
Published Year: 1994
Authors: Gary Koehler


A Review of Machine Learning in Scheduling
Journal: IEEE Transactions on Engineering Management
Published Year: 1994
Authors: Haldun Aytug, S Bhattacharyya, Gary Koehler, J. L. Snowdon


An Analysis of Non-Binary Genetic Algorithms with Cardinality 2V
Journal: Complex Systems
Published Year: 1994
Authors: Siddhartha Bhattacharyya, Gary Koehler


An Investigation on the Conditions of Pruning an Induced Decision Tree
Journal: European Journal of Operational Research
Published Year: 1994
Authors: H Kim, Gary Koehler


Deterministic Global Optimal FNN Training Algorithms
Journal: Neural Networks
Published Year: 1994
Authors: Z Tang, Gary Koehler


Genetic Learning of Dynamic Scheduling within a Simulation Environment
Journal: Computers & Operations Research
Published Year: 1994
Authors: Haldun Aytug, Gary Koehler, J. L. Snowdon


The Accuracy of Decision Tree Induction in a Noisy Domain for Expert System Construction
Journal: Intelligent Systems in Accounting, Finance and Management
Published Year: 1994
Authors: Hyunsoo Kim, Gary Koehler


Developing Knowledge Structures: A Comparison of a Qualitative-Response Model and Two Machine-Learning Algorithms
Journal: Decision Support Systems and Electronic Commerce
Published Year: 1993
Authors: J.V. Hansen, Gary Koehler, W.F. Messier, J.F. Mutchler


The Accuracy of Concepts Learned from Induction
Journal: Decision Support Systems and Electronic Commerce
Published Year: 1993
Authors: L Tsai, Gary Koehler


Improper Linear Discriminant Classifiers
Journal: European Journal of Operational Research
Published Year: 1991
Authors: Gary Koehler


Linear Discriminant Functions Determined by Genetic Search
Journal: INFORMS Journal on Computing
Published Year: 1991
Authors: Gary Koehler


Considerations for Mathematical Programming Models in Discriminant Analysis
Journal: Managerial and Decision Economics
Published Year: 1990
Authors: Gary Koehler


Minimizing Misclassifications in Linear Discriminant Analysis
Journal: Decision Sciences
Published Year: 1990
Authors: Gary Koehler, S.S. Erenguc


Relationships between Various Markovian Decision Problem Classes
Journal: SIAM Journal of Optimization and Control
Published Year: 1990
Authors: Gary Koehler


Survey of Mathematical Programming Models for Discriminant Analysis
Journal: Managerial and Decision Economics
Published Year: 1990
Authors: S.S. Erenguc, Gary Koehler


Characterization of Unacceptable Solutions in LP Discriminant Analysis
Journal: Decision Sciences
Published Year: 1989
Authors: Gary Koehler


Unacceptable Solutions and the Hybrid Discriminant Model
Journal: Decision Sciences
Published Year: 1989
Authors: Gary Koehler


On Optimal Allocation in a Distributed Processing Environment
Journal: Management Science
Published Year: 1982
Authors: A. Dutta, Gary Koehler, A.B. Whinston


The Calculation of Implied Variances from the Black-Scholes Model: A Note
Journal: Journal of Finance
Published Year: 1982
Authors: Steven Manaster, Gary Koehler


Bounds and Elimination in Generalized Markov Decisions
Journal: Naval Research Logistics
Published Year: 1981
Authors: Gary Koehler


Specification and Estimation of Logically Consistent Linear Models
Journal: Decision Sciences
Published Year: 1981
Authors: Gary Koehler, A. Wildt


A Generalized Markov Decision Process
Journal: Revue Francaise d'Automatique et Recherche Operationnelle
Published Year: 1980
Authors: Gary Koehler


A Look at Finding Points of a Convex Polyhedron Using Relaxation and Subgradient Procedures
Journal: Operations Research
Published Year: 1980
Authors: Gary Koehler, S Kumar


Sensitivity Analysis in Leontief Substitution Systems
Journal: Management Science
Published Year: 1980
Authors: Gary Koehler, A.B. Whinston


A Complementarity Approach for Solving Leontief Substitution Systems and (Generalized) Markov Decision Processes
Journal: Revue Francaise d'Automatique et Recherche Operationnelle
Published Year: 1979
Authors: Gary Koehler, Andrew Whinston, Gordon Wright


Computation Techniques for Large Scale Undiscounted Markov Decision Processes
Journal: Naval Research Logistics
Published Year: 1979
Authors: T. Hodgson, Gary Koehler


The Mixed Postman Problem
Journal: Discrete Applied Mathematics
Published Year: 1979
Authors: Charles Kappauf, Gary Koehler


Value Convergence in a Generalized Markov Decision Process
Journal: SIAM Journal of Optimization and Control
Published Year: 1979
Authors: Gary Koehler


A Comment on Rao's Class M and S Matrices
Journal: Management Science
Published Year: 1977
Authors: Gary Koehler


The Solution of Leontief Substitution Systems
Journal: Management Science
Published Year: 1975
Authors: Gary Koehler, A.B. Whinston, G.P. Wright


An Iterative Procedure for Non-Discounted Discrete-Time Markov Decisions
Journal: Naval Research Logistics
Published Year: 1974
Authors: Gary Koehler, A.B. Whinston, G.P. Wright


Fixed Cost Minimization over a Leontief Substitution System
Journal: Revue Francaise d'Automatique et Recherche Operationnelle
Published Year: 1974
Authors: Gary Koehler, Andrew Whinston, Gordon Wright


Effects of Increased Tensions of O2, N2 and He on the Activity of Na-K-Mg ATPase on Rat Intestine
Journal: Journal of Aviation Medicine
Published Year: 1972
Authors: Gary Koehler, Sheldon Gottlieb

Guru
Published Year: 1986
Authors:


Knowledge Manager, Micro Data Base Systems, Inc.
Published Year: 1983
Authors:


MDBS III
Published Year: 1983
Authors:


PIPS
Published Year: 1970
Authors: