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Compacting, Picking and Growing for Unforgetting Continual Learning
Ching-Yi Hung · Cheng-Hao Tu · Cheng-En Wu · Chien-Hung Chen · Yi-Ming Chan · Chu-Song Chen

Thu Dec 12 10:45 AM -- 12:45 PM (PST) @ East Exhibition Hall B + C #53

Continual lifelong learning is essential to many applications. In this paper, we propose a simple but effective approach to continual deep learning. Our approach leverages the principles of deep model compression, critical weights selection, and progressive networks expansion. By enforcing their integration in an iterative manner, we introduce an incremental learning method that is scalable to the number of sequential tasks in a continual learning process. Our approach is easy to implement and owns several favorable characteristics. First, it can avoid forgetting (i.e., learn new tasks while remembering all previous tasks). Second, it allows model expansion but can maintain the model compactness when handling sequential tasks. Besides, through our compaction and selection/expansion mechanism, we show that the knowledge accumulated through learning previous tasks is helpful to build a better model for the new tasks compared to training the models independently with tasks. Experimental results show that our approach can incrementally learn a deep model tackling multiple tasks without forgetting, while the model compactness is maintained with the performance more satisfiable than individual task training.

Author Information

Ching-Yi Hung (Academia Sinica)
Cheng-Hao Tu (Academia Sinica)
Cheng-En Wu (Academia Sinica)
Chien-Hung Chen (Academia Sinica)
Yi-Ming Chan (Academia Sinica)
Chu-Song Chen (Academia Sinica)