2016

Semantic Compositional Networks for Visual Captioning

Gan, Zhe, Gan, Chuang, He, Xiaodong et al.

Understand

A Semantic Compositional Network (SCN) is developed for image captioning, in which semantic concepts (i.e., tags) are detected from the image, and the probability of each tag is used to compose the parameters in a long short-term memory (LSTM) network.

  • The SCN extends each weight matrix of the LSTM to an ensemble of tag-dependent weight matrices.
  • The degree to which each member of the ensemble is used to generate an image caption is tied to the image-dependent probability of the corresponding tag.
  • In addition to captioning images, we also extend the SCN to generate captions for video clips.

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