  In this work, we propose a novel approach that predicts the relationships
between various entities in an image in a weakly supervised manner by relying
on image captions and object bounding box annotations as the sole source of
supervision. Our proposed approach uses a top-down attention mechanism to align
entities in captions to objects in the image, and then leverage the syntactic
structure of the captions to align the relations. We use these alignments to
train a relation classification network, thereby obtaining both grounded
captions and dense relationships. We demonstrate the effectiveness of our model
on the Visual Genome dataset by achieving a recall@50 of 15% and recall@100 of
25% on the relationships present in the image. We also show that the model
successfully predicts relations that are not present in the corresponding
captions.
