Tuesday, January 12th 2016
Prof.dr. C.N. Schizas, University of Cyprus
Variable target values Neural Network for dealing with imbalanced datasets
A classification algorithm is proposed for dealing with highly imbalanced datasets that often appear in biomedical problems. Its idea comes from the way a neural network is trained in order to get a decent hypothesis out of a dataset that comprises a huge sized majority class and a tiny size minority class. This situation is especially probable when forming machine learning databases describing rare medical conditions. The algorithm is tested on a large dataset for predicting the risk of preeclampsia in pregnant women and preliminary results are encouraging. Conventional machine learning algorithms tend to provide poor hypothesis for extremely imbalanced datasets by favoring the majority class. The proposed algorithm is not trained on the basis of the mean squared error objective function and thus avoids the overwhelming effect of the highly asymmetric class sizes.
Colloquium coordinators are Prof.dr. M. Aiello (e-mail :
Prof.dr. M. Biehl (e-mail:
Effective immediately, UG-authors are entitled to a discount when publishing open access in one of the 271 journals from publisher MDPI. Corresponding authors from the UG will receive a 10% discount on the article processing charge. The only...
This year, the University of Groningen has submitted four research projects to compete for the national Klokhuis Science Prize. The aim of this prize is to introduce a young and wide audience to academic research. The winning project will be...
Non-executive directors (hereafter: directors) have to take a critical stance towards the top managers they supervise. This has been the dominant perspective among researchers and the media after the financial crisis of 2008 and recent major...