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Contrastive Representation Learning for Natural World Imagery: Habitat prediction for 30, 000 species

Recent work in contrastive representation learning has pushed the boundaries of classification tasks in computer vision, achieving state of the art results on many established benchmarks. However, their performance on natural imagery tasks which fall into the category of fine-grained image classification can be further improved. In this paper, I present a methodology that explores this issue and achieves state of the art results on species distribution modelling from remote sensing imagery as part of the GeoLifeCLEF2021 challenge. My method is able to beat the current state of the art on this challenge (trained on 4 types of imagery) using only base RGB imagery. Initial experiments indicate that modifying the architecture to include additional image modalities leads to further improvements in performance on the task of location-based species recommendation. Additionally, I introduce a consistency function, which relies on the strategy of withholding data from the model and is useful in checking for model generality without relying on a validation split.