01 January 2019
less than a minute read
In this paper, we propose a robust method for outlier removal to improve the performance for image classification.
Authors: Matthew Hagen, Ala Eddine Ayadi, Jiaqi Wang, Nikolaos Vasiloglou, Estelle Afshar. 2019.
In KDD 2019 Workshop on Data Collection, Curation, and Labeling for Mining and Learning (DCCL, KDD ‘19).
In this paper, we propose a robust method for outlier removal to improve the performance for image classification. Increasing the size of training data does not necessarily raise prediction accuracy, due to instances that may be poor representatives of their respective classes. Four separate experiments are tested to evaluate the effectiveness of outlier removal for several classifiers. Embeddings are generated from a pre-trained neural network, a fine-tuned network, as well as a Siamese network. Subsequently, outlier detection is evaluated based on clustering quality and classifier performance from a fully-connected feed-forward network, K-Nearest Neighbors and gradient boosting model.
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