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arXiv 1609.09353cs.LGq-bio.PEstat.ML
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深度多物种嵌入

Deep Multi-Species Embedding

Shanghai JiaoTong University(上海交通大学);Cornell University(康奈尔大学);Cornell Lab of Ornithology(康奈尔鸟类学实验室)

Di Chen, Yexiang Xue, Shuo Chen, Daniel Fink, Carla Gomes

摘要:

了解物种如何随着时间的推移在景观中分布是生物多样性研究中的一个基本问题。不幸的是,大多数物种分布模型一次只针对一个物种,尽管有强有力的生态学证据表明物种不是独立分布的。我们提出了深度多物种嵌入(DMSE),它通过深度神经网络将对应于多个物种的向量以及代表环境协变量的向量联合嵌入到一个共同的高维特征空间中。应用于公民科学项目\textit{eBird}的鸟类观测数据,我们展示了DMSE模型如何发现物种间的关系,优于单物种分布模型(随机森林和SVM)以及竞争的多标签模型。此外,我们还展示了使用深度神经网络提取嵌入中的特征的好处,并展示了它们如何提高物种分布建模的预测性能。DMSE模型的一个重要领域贡献是发现和描述物种相互作用的能力,同时学习物种之间共享的栖息地偏好。作为额外的贡献,我们提供了一个图形嵌入数百种鸟类在美国东北部。

英文摘要:

Understanding how species are distributed across landscapes over time is a fundamental question in biodiversity research. Unfortunately, most species distribution models only target a single species at a time, despite strong ecological evidence that species are not independently distributed. We propose Deep Multi-Species Embedding (DMSE), which jointly embeds vectors corresponding to multiple species as well as vectors representing environmental covariates into a common high-dimensional feature space via a deep neural network. Applied to bird observational data from the citizen science project \textit{eBird}, we demonstrate how the DMSE model discovers inter-species relationships to outperform single-species distribution models (random forests and SVMs) as well as competing multi-label models. Additionally, we demonstrate the benefit of using a deep neural network to extract features within the embedding and show how they improve the predictive performance of species distribution modelling. An important domain contribution of the DMSE model is the ability to discover and describe species interactions while simultaneously learning the shared habitat preferences among species. As an additional contribution, we provide a graphical embedding of hundreds of bird species in the Northeast US.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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