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ARMA Nets: Expanding Receptive Field for Dense Prediction

2020-02-15 23:18:27
Jiahao Su, Shiqi Wang, Furong Huang

Abstract

Global information is essential for dense prediction problems, whose goal is to compute a discrete or continuous label for each pixel in the images. Traditional convolutional layers in neural networks, originally designed for image classification, are restrictive in these problems since their receptive fields are limited by the filter size. In this work, we propose autoregressive moving-average (ARMA) layer, a novel module in neural networks to allow explicit dependencies of output neurons, which significantly expands the receptive field with minimal extra parameters. We show experimentally that the effective receptive field of neural networks with ARMA layers expands as autoregressive coefficients become larger. In addition, we demonstrate that neural networks with ARMA layers substantially improve the performance of challenging pixel-level video prediction tasks as our model enlarges the effective receptive field.

Abstract (translated)

URL

https://arxiv.org/abs/2002.11609

PDF

https://arxiv.org/pdf/2002.11609.pdf


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