  Humans have the ability to learn novel compositional concepts by recalling
and generalizing primitive concepts acquired from past experiences. Inspired by
this observation, in this paper, we propose MetaReVision, a retrieval-enhanced
meta-learning model to address the visually grounded compositional concept
learning problem. The proposed MetaReVision consists of a retrieval module and
a meta-learning module which are designed to incorporate retrieved primitive
concepts as a supporting set to meta-train vision-anguage models for grounded
compositional concept recognition. Through meta-learning from episodes
constructed by the retriever, MetaReVision learns a generic compositional
representation that can be fast updated to recognize novel compositional
concepts. We create CompCOCO and CompFlickr to benchmark the grounded
compositional concept learning. Our experimental results show that MetaReVision
outperforms other competitive baselines and the retrieval module plays an
important role in this compositional learning process.
