Real-Time Recurrent Tactile Recognition: Momentum Batch-Sequential Echo State Networks
Lele Cao, Fuchun Sun, Kotagiri Ramamohanarao, Wenbing Huang, Weihao Cheng, Xiaolong Liu · IEEE Transactions on Systems Man and Cybernetics Systems · 2017
Tactile recognition aims at identifying target objects according to tactile sensory readings. Tactile data have two salient properties: 1) sequentially real-time and 2) temporally correlated, which essentially calls for a real-time (i.e., online fixed-budget) and recurrent recognition procedure. Based on an efficient and robust spatio-temporal feature representation for tactile sequences, we handle the problem of real-time recurrent tactile recognition by proposing a bounded online-sequential learning framework, and incorporates the strength of batch-regularization bootstrapping, bounded recursive reservoir, and momentum-based estimation. Experimental evaluations show that it outperforms the state-of-the-art methods by a large margin on test accuracy; and its training performance is superior to most compared models from aspects of average online training error, computational complexity, and storage efficiency.