Abstract
Around 30% revenue has been wasted due to different types of advertising fraud. In view of the continuous emergence of fraud and the improvement of fraudulent means, a click fraud detection of cost-sensitive convolutional neural network (CSCNN) based on feature matrix is proposed. In order to capture the pattern of click fraud, priori probability is introduced and a new feature set is derived from the knowledge of entropy. Then, using cost-based sampling method and threshold-moving cost sensitive learning algorithm to solve unbalanced data training problems. Features are transformed into feature matrix by different time windows to fit the input of a convolutional neural network. Finally, considering the convolution kernel size, the number of convolution kernels and the pooling size of different network structures in this work, effective CSCNN structure was chosen. Experiments on real-word data show that this method can complete click fraud detection effectively, and can complete multi classification without increasing the complexity of the model. A new effective method was provided on click fraud detection in mobile advertisement.
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Liu, X., Zhang, X., Miao, Q. (2020). A Click Fraud Detection Scheme Based on Cost-Sensitive CNN and Feature Matrix. In: Tian, Y., Ma, T., Khan, M. (eds) Big Data and Security. ICBDS 2019. Communications in Computer and Information Science, vol 1210. Springer, Singapore. https://doi.org/10.1007/978-981-15-7530-3_6
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DOI: https://doi.org/10.1007/978-981-15-7530-3_6
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