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Image captioning via hierarchical attention mechanism and policy gradient optimization.
Shiyang Yan
Yuan Xie
Fangyu Wu
Jeremy S. Smith
Wenjin Lu
Bailing Zhang
Published in:
Signal Process. (2020)
Keyphrases
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attention mechanism
image data
input image
image features
multiscale
image classification
low level
image representation
visual attention
parametric optimization
image retrieval
computer vision
optimization method