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Image Captioning Based on a Hierarchical Attention Mechanism and Policy Gradient Optimization.
Shiyang Yan
Fangyu Wu
Jeremy S. Smith
Wenjin Lu
Bailing Zhang
Published in:
CoRR (2018)
Keyphrases
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attention mechanism
input image
multiscale
parametric optimization
image data
image features
image classification
image representation
image retrieval
image segmentation
low level
natural images
vision system
human computer interaction
optimization method
policy gradient
visual attention model
machine learning