Neural-net-induced Gaussian process regression for function approximation and PDE solution
Neural-net-induced Gaussian process regression for function approximation and PDE solution
复制标题
用于函数逼近和 PDE 求解的神经网络诱导高斯过程回归
DOI:
10.1016/j.jcp.2019.01.045
复制
发表时间:
2018-06
影响因子:
4.1
通讯作者:
George Em Karniadakis
中科院分区:
文献类型:
--
作者:
Guofei Pang;Liu Yang;George Em Karniadakis
Neural-net-induced Gaussian process (NNGP) regression inherits both the high expressivity of deep neural networks (deep NNs) as well as the uncertainty quantification property of Gaussian processes (GPs). We generalize the current NNGP to first include a larger number of hyperparameters and subsequently train the model by maximum likelihood estimation. Unlike previous works on NNGP that targeted classification, here we apply the generalized NNGP to function approximation and to solving partial differential equations (PDEs). Specifically, we develop an analytical iteration formula to compute the covariance function of GP induced by deep NN with an error-function nonlinearity. We compare the performance of the generalized NNGP for function approximations and PDE solutions with those of GPs and fully-connected NNs. We observe that for smooth functions the generalized NNGP can yield the same order of accuracy with GP, while both NNGP and GP outperform deep NN. For non-smooth functions, the generalized NNGP is superior to GP and comparable or superior to deep NN.
登录
查看更多内容
影响因子:
4.1
作者:
Guofei Pang;Paris Perdikaris;Wei Cai;George Em Karniadakis
通讯作者:
George Em Karniadakis
DOI:
10.1007/978-1-4612-0745-0
发表时间:
1995
期刊:
--
影响因子:
--
作者:
Radford M. Neal
通讯作者:
Radford M. Neal
DOI:
--
发表时间:
2016
期刊:
--
影响因子:
--
作者:
M. Raissi;P. Perdikaris;G. Karniadakis
通讯作者:
M. Raissi;P. Perdikaris;G. Karniadakis
DOI:
--
发表时间:
2013-10
期刊:
--
影响因子:
--
作者:
Loic Le Gratiet
通讯作者:
Loic Le Gratiet
DOI:
--
发表时间:
2017-07
期刊:
ArXiv
影响因子:
--
作者:
Le Song;S. Vempala;John Wilmes;Bo Xie
通讯作者:
Le Song;S. Vempala;John Wilmes;Bo Xie