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Why KDAC? A general activation function for knowledge discovery

delete2022-08-01
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OA
AI
王
王振华 (Zhenhua Wang)
H
Haozhe Liu
F
Fanglin Liu
高
高栋 (Dong Gao) *
DOI:10.1016/j.neucom.2022.06.019delete
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摘要

摘要

En 中文
Deep learning oriented named entity recognition (DNER) has gradually become the paradigm of knowledge discovery, which greatly promotes domain intelligence. However, the activation function of DNER fails to treat gradient vanishing, no negative output or non-differentiable existence, which may impede the exploration of knowledge due to the omission and incomplete representation of the latent semantic. To break through the dilemma, we present a novel activation function termed KDAC. Detailly, KDAC is an aggregation function with multiple conversion modes. The backbone is the interaction between exponent and linearity, and the both ends are extended through adaptive linear divergence, which can surmount the gradient vanishing and no negative output. Crucially, the non-differentiable points can be alerted and eliminated by an approximate smoothing algorithm. KDAC has a series of brilliant properties, such as nonlinear, stable near-linear transformation and derivative, as well as dynamic style, etc. We perform experiments based on BERT-BiLSTM-CNN-CRF model on six benchmark datasets containing different domain knowledge, such as Weibo, Clinical, E-commerce, Resume, HAZOP and People's daily. The evaluation results show that KDAC is advanced and effective, and can provide more generalized activation to stimulate the performance of DNER. We hope that KDAC can be exploited as a promising activation function to devote itself to the construction of knowledge. (c) 2022 Elsevier B.V. All rights reserved.
Keyword:
KDAC
Knowledge discovery
DNER
Activation function
Approximate smoothing algorithm
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期刊

Neurocomputing 封面图
Neurocomputing
IF:
6.5
论文数:
2.5W
被引数:
6.5W

机构

S
Southwest Jiaotong University
学者数:
2.9W
论文数: 2.1W
被引数: 2.3W
B
Beijing University of Chemical Technology
学者数:
3.1W
论文数: 2.2W
被引数: 4.5W
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