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Publications:Neural networks based screening of real estate transactions
Abstract <p>Aiming to hide the real money gai<p>Aiming to hide the real money gains and to avoid taxes, fictive prices are sometimes recorded in the real estate transactions. This paper is concerned with artificial neural networks based screening of real estate transactions aiming to categorize them into "clear" and "fictitious" classes. The problem is treated as an outlier detection task. Both unsupervised and supervised approaches to outlier detection are studied here. The soft minimal hyper-sphere support vector machine (SVM) based novelty detector is employed to solve the task without the supervision. In the supervised case, the effectiveness of SVM, multilayer perceptron (MLP), and a committee based classification of the real estate transactions are studied. To give the user a deeper insight into the decisions provided by the models, the real estate transactions are not only categorized into "clear" and "fictitious" classes, but also mapped onto the self organizing map (SOM), where the regions of "clear", "doubtful" and "fictitious" transactions are identified. We demonstrate that the stability of the regions evolved in the SOM during training is rather high. The experimental investigations performed on two real data sets have shown that the categorization accuracy obtained from the supervised approaches is considerably higher than that obtained from the unsupervised one. The obtained accuracy is high enough for the technique to be used in practice. © ICS AS CR 2007.</p>d in practice. © ICS AS CR 2007.</p>
Author Vilius Kontrimas + , Antanas Verikas +
Diva http://hh.diva-portal.org/smash/record.jsf?searchId=1&pid=diva2:239255
EndPage 30  +
Issue 1  +
Journal Neural Network World  +
PublicationType Journal Paper  +
Publisher Institute of Information and Computer Technology ASCR; Faculty of Transport, Czech Polytechnic University  +
StartPage 17  +
Title Neural networks based screening of real estate transactions  +
Volume 17  +
Year 2007  +
Has queryThis property is a special property in this wiki. Publications:Neural networks based screening of real estate transactions + , Publications:Neural networks based screening of real estate transactions + , Publications:Neural networks based screening of real estate transactions + , Publications:Neural networks based screening of real estate transactions + , Publications:Neural networks based screening of real estate transactions + , Publications:Neural networks based screening of real estate transactions + , Publications:Neural networks based screening of real estate transactions + , Publications:Neural networks based screening of real estate transactions + , Publications:Neural networks based screening of real estate transactions + , Publications:Neural networks based screening of real estate transactions +
Categories Publication  +
Modification dateThis property is a special property in this wiki. 30 September 2016 20:40:45  +
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