New Study by Yoon Lee Tackles Imbalanced Data Sets in Business Analytics

Imbalanced data sets are a growing problem in data mining and business analytics. For example, the ability of machine learning algorithms to predict the minority class deteriorates in the presence of class imbalance. Although there have been many approaches that have been studied in literature to tackle the imbalance problem, most of these approaches have been met with limited success. A new study by Turner College management information systems professor Yoon Lee and Riyaz Sikora of the University of Texas at Arlington, which is scheduled for publication in a future issue of Information Systems Frontiers, proposes three methods based on a wrapper approach (i.e., a feature selection technique that finds the best subset of features for a specific machine learning model and domain) that combines the use of under-sampling with ensemble learning to improve the performance of standard data mining algorithms. Sikora and Lee test their ensemble methods on 10 data sets collected from the UCI repository with an imbalance ratio of at least 70%. They also compare the performance of their ensemble method to two other traditional techniques for dealing with the imbalance problem and show significant improvement in both recall and the average of precision and recall.

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Four Turner College Faculty Recognized for Outstanding Teaching

CSU Head Women's Soccer Coach Jay Entlich recently released a list of CSU faculty who have been chosen by a player as a member of the CSU faculty who has impacted the player in a positive way along their journey at CSU. Four Turner College faculty were included on the list, along with the player who nominated each. Management professor Phil Bryant was named by Sophia Leal , a freshman midfielder from Oxford, Georgia. Sophia attended Eastside High School and was a two-time all-region selection during her high school career. Through the first 10 games of 2024, she has scored one goal and recorded three assists. Next, management professor John Finley was named by Lizz Forshaw , a graduate student forward from Stockton, England. Lizz, who attended IMG Academy in south Florida, has scored four goals and recorded four assists this season. During her senior year in 2023, she scored three goals and recorded two assists. As a junior in 2022, Lizz scored three goals and recorded fo

Turner College Grad Publishes Academic Study on Corporate Culture and Strategy

Former Turner College student Tamara Todorova , now an associate professor of economics at American University in Bulgaria (AUB), recently published a study on corporate culture and strategy. Todorova earned an MBA from the Turner College in 1996 and then went on to earn a doctorate in international economics from the University of Economics - Varna in 2001. She has been on the faculty at AUB since August of 2000. Todorova's study, which appears in the current issue of the International Journal of Business Performance Management , investigates how corporate culture helps to economize on the transaction costs of internal organization. As she explains, the dimensions of corporate culture that assist in this task include increasing trust and reducing intrafirm opportunism. Todorova's study demonstrates that setting common goals and a common direction reduces the sizeable costs of internal organization. Tamara's prior research appears in Economics of Transition , International

Hammer joins Turner College Finance Faculty

The Turner College's Department of Accounting and Finance welcomes Melissa Ingle Hammer , who joins the group as an adjunct faculty in finance. Hammer graduated from the Turner College in 2005, after earning a BBA in finance. She later went on to earn an MBA from Auburn University, a Specialist Certificate in Conduct Risk from the University of Manchester, a Certificate in Team Culture from the University of Pennsylvania, and a Certificate in Executive Presence from Cornell University. Hammer is the SVP of Fair Lending Product Management with RiskExec at Asurity. She previously worked as Compliance Manager of Fair Lending at Synovus, a senior regulatory consultant with Wolters Kluwer, and as VP of Compliance at TD. This semester Hammer will be teaching FINC 3135, Financial Institutions and Technologies. Turner Business welcomes Melissa and wishes her a great first semester in the Turner College.

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