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Efficient Imbalanced Multimedia Concept Retrieval by Deep Learning on Spark Clusters
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Author(s): Yilin Yan (University of Miami, Department of Electrical and Computer Engineering, Coral Gables, FL, USA), Min Chen (University of Washington Bothell, Bothell, Computing and Software Systems, School of STEM, WA, USA), Saad Sadiq (University of Miami, Department of Electrical and Computer Engineering, Coral Gables, FL, USA)and Mei-Ling Shyu (University of Miami, Department of Electrical and Computer Engineering, Coral Gables, FL, USA)
Copyright: 2017
Volume: 8
Issue: 1
Pages: 20
Source title:
International Journal of Multimedia Data Engineering and Management (IJMDEM)
Editor(s)-in-Chief: Chengcui Zhang (University of Alabama at Birmingham, USA)and Shu-Ching Chen (University of Missouri-Kansas City, United States)
DOI: 10.4018/IJMDEM.2017010101
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Abstract
The classification of imbalanced datasets has recently attracted significant attention due to its implications in several real-world use cases. The classifiers developed on datasets with skewed distributions tend to favor the majority classes and are biased against the minority class. Despite extensive research interests, imbalanced data classification remains a challenge in data mining research, especially for multimedia data. Our attempt to overcome this hurdle is to develop a convolutional neural network (CNN) based deep learning solution integrated with a bootstrapping technique. Considering that convolutional neural networks are very computationally expensive coupled with big training datasets, we propose to extract features from pre-trained convolutional neural network models and feed those features to another full connected neutral network. Spark implementation shows promising performance of our model in handling big datasets with respect to feasibility and scalability.
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