用少量观测点快速估算物种分布范围,提升生态研究效率
Feedforward Few-shot Species Range Estimation
- 基于有限观测点和可选元数据,端到端预测物种分布
- 在两个基准上达到当前最优性能,计算速度更快
- 适合生态学、保护生物学等领域快速分析新物种分布
了解物种在地球上的分布范围对生态研究和保护工作至关重要。通过绘制所有物种的空间分布,我们能更深入理解气候变化和栖息地丧失如何影响全球生物多样性。然而,目前仅有较少物种具有准确的分布估计。大多数物种仅拥有少量观测记录。本文提出一种少样本物种分布估计算法,在推理时输入一组空间位置及可选的文本或图像等元数据,输出物种编码,可直接用于预测未见过物种的分布。我们在两个挑战性基准上评估该方法,性能优于近期其他方法,且计算耗时大幅减少。
原文摘要 · Abstract (English)
Knowing where a particular species can or cannot be found on Earth is crucial for ecological research and conservation efforts. By mapping the spatial ranges of all species, we would obtain deeper insights into how global biodiversity is affected by climate change and habitat loss. However, accurate range estimates are only available for a relatively small proportion of all known species. For the majority of the remaining species, we typically only have a small number of records denoting the spatial locations where they have previously been observed. We outline a new approach for few-shot species range estimation to address the challenge of accurately estimating the range of a species from limited data. During inference, our model takes a set of spatial locations as input, along with optional metadata such as text or an image, and outputs a species encoding that can be used to predict the range of a previously unseen species in a feedforward manner. We evaluate our approach on two challenging benchmarks, where we obtain state-of-the-art range estimation performance, in a fraction of the compute time, compared to recent alternative approaches.
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