Title
AutoTune: Automatically Tuning Convolutional Neural Networks for Improved Transfer Learning
Abstract
Transfer learning enables solving a specific task having limited data by using the pre-trained deep networks trained on large-scale datasets. Typically, while transferring the learned knowledge from source task to the target task, the last few layers are fine-tuned (re-trained) over the target dataset. However, these layers are originally designed for the source task that might not be suitable for the target task. In this paper, we introduce a mechanism for automatically tuning the Convolutional Neural Networks (CNN) for improved transfer learning. The pre-trained CNN layers are tuned with the knowledge from target data using Bayesian Optimization. First, we train the final layer of the base CNN model by replacing the number of neurons in the softmax layer with the number of classes involved in the target task. Next, the CNN is tuned automatically by observing the classification performance on the validation data (greedy criteria). To evaluate the performance of the proposed method, experiments are conducted on three benchmark datasets, e.g., CalTech-101, CalTech-256, and Stanford Dogs. The classification results obtained through the proposed AutoTune method outperforms the standard baseline transfer learning methods over the three datasets by achieving 95.92%, 86.54%, and 84.67% accuracy over CalTech-101, CalTech-256, and Stanford Dogs, respectively. The experimental results obtained in this study depict that tuning of the pre-trained CNN layers with the knowledge from the target dataset confesses better transfer learning ability. The source codes are available at https://github.com/JekyllAndHyde8999/AutoTune_CNN_TransferLearning.
Year
DOI
Venue
2021
10.1016/j.neunet.2020.10.009
Neural Networks
Keywords
DocType
Volume
Convolutional Neural Networks,Fine-tuning,Bayesian optimization,Neural Architecture Search,Transfer learning
Journal
133
Issue
ISSN
Citations 
1
0893-6080
2
PageRank 
References 
Authors
0.37
34
5
Name
Order
Citations
PageRank
S. H. Shabbeer Basha192.16
Kumar Vinakota Sravan220.37
P. Viswanath314811.77
Snehasis Mukherjee47214.54
Shiv Ram Dubey532524.44