SoftFlow: Probabilistic Framework for Normalizing Flow on Manifolds
SoftFlow: Probabilistic Framework for Normalizing Flow on Manifolds
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SoftFlow:流形上流标准化的概率框架
DOI:
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发表时间:
2020
期刊:
影响因子:
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通讯作者:
N. Kim
中科院分区:
文献类型:
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作者:
Hyeongju Kim;Hyeonseung Lee;Woohyun Kang;Joun Yeop Lee;N. Kim
Flow-based generative models are composed of invertible transformations between two random variables of the same dimension. Therefore, flow-based models cannot be adequately trained if the dimension of the data distribution does not match that of the underlying target distribution. In this paper, we propose SoftFlow, a probabilistic framework for training normalizing flows on manifolds. To sidestep the dimension mismatch problem, SoftFlow estimates a conditional distribution of the perturbed input data instead of learning the data distribution directly. We experimentally show that SoftFlow can capture the innate structure of the manifold data and generate high-quality samples unlike the conventional flow-based models. Furthermore, we apply the proposed framework to 3D point clouds to alleviate the difficulty of forming thin structures for flow-based models. The proposed model for 3D point clouds, namely SoftPointFlow, can estimate the distribution of various shapes more accurately and achieves state-of-the-art performance in point cloud generation.
DOI:
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发表时间:
2020-02
期刊:
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影响因子:
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作者:
Danilo Jimenez Rezende;G. Papamakarios;S. Racanière;M. S. Albergo;G. Kanwar;P. Shanahan;Kyle Cranmer
通讯作者:
Danilo Jimenez Rezende;G. Papamakarios;S. Racanière;M. S. Albergo;G. Kanwar;P. Shanahan;Kyle Cranmer
DOI:
10.1063/5.0130803
发表时间:
2023
期刊:
Chaos (Woodbury, N.Y.)
影响因子:
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作者:
Fronk,Colby;Petzold,Linda
通讯作者:
Petzold,Linda