Compositional Generalization in Image Captioning

Mitja Nikolaus, Mostafa Abdou, Matthew Lamm, Rahul Aralikatte, Desmond Elliott

    4 Citationer (Scopus)

    Abstract

    Image captioning models are usually evaluated on their ability to describe a held-out set of images, not on their ability to generalize to unseen concepts. We study the problem of compositional generalization, which measures how well a model composes unseen combinations of concepts when describing images. State-of-the-art image captioning models show poor generalization performance on this task. We propose a multi-task model to address the poor performance, that combines caption generation and image--sentence ranking, and uses a decoding mechanism that re-ranks the captions according their similarity to the image. This model is substantially better at generalizing to unseen combinations of concepts compared to state-of-the-art captioning models.
    OriginalsprogUdefineret/Ukendt
    TitelProceedings of the 23rd Conference on Computational Natural Language Learning (CoNLL)
    Antal sider12
    UdgivelsesstedHong Kong, China
    ForlagAssociation for Computational Linguistics (ACL)
    Publikationsdato1 nov. 2019
    Sider87-98
    DOI
    StatusUdgivet - 1 nov. 2019

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