从仅存在到丰富的物种分布模型使用转移学习
Benjamin Bourel1, Alexis Joly1, Maximilien Servajean2,3
1Inria, University of Montpellier, LIRMM, CNRS, Montpellier, France.
Ecology letters
|July 24, 2025
概括
卷积神经网络-物种分布模型 (CNN-SDMs) 现在可以有效地预测物种丰富性,即使使用小数据集. 这一进步利用转移学习和大量仅存在的数据,改善了对稀有和本地稀有物种的预测.
科学领域:
- 生态生态学 生态生态学
- 计算生物学 计算生物学
- 机器学习 机器学习
背景情况:
- 传统的物种分布模型 (SDM) 在预测物种丰度方面面临局限性,因为数据集很小.
- 深度学习模型,如卷积神经网络 (CNN),显示出希望,但需要大量的数据集,阻碍了丰富性研究.
研究的目的:
- 为了提高基于CNN的SDM对物种丰富性预测的性能.
- 为深度学习模型应对物种丰度数据集中有限的样本大小所带来的挑战.
主要方法:
- 使用卷积神经网络-物种分布模型 (CNN-SDM).
- 员工转移学习结合大型仅存在物种数据集.
- 将方法应用于地中海沿海鱼类丰度数据.
主要成果:
- 显著提高了CNN-SDMs的丰富性预测性能,平均为35% (D平方得分).
- 在丰富性预测中,与经典SDM相比,实现了10%的平均性能增长.
- 加强了对罕见物种和在当地罕见条件下广泛分布的物种的预测.
结论:
- 加上转移学习和大数据集的CNN-SDM,有效地克服了丰富度建模的样本大小限制.
- 这种方法比传统的SDM在预测物种丰度方面有了显著的改进.
- 该方法为罕见和本地罕见物种的分布提供了宝贵的见解.
相关概念视频
Model Approaches for Pharmacokinetic Data: Distributed Parameter Models
127
Pharmacokinetic models are mathematical constructs that represent and predict the time course of drug concentrations in the body, providing meaningful pharmacokinetic parameters. These models are categorized into compartment, physiological, and distributed parameter models.
The distributed parameter models are specifically designed to account for variations and differences in some drug classes. This model is particularly useful for assessing regional concentrations of anticancer or...
The distributed parameter models are specifically designed to account for variations and differences in some drug classes. This model is particularly useful for assessing regional concentrations of anticancer or...
127
Types of Genetic Transfer Between Organisms
29.4K
Genetic transfer occurs when genetic information is passed from one organism to another. It occurs via two mechanisms: vertical gene transfer and horizontal gene transfer. Vertical gene transfer occurs when genetic information is transferred from one generation to the next, which happens much more frequently than horizontal gene transfer. Both sexual and asexual reproduction are forms of vertical gene transfer, where one or more organisms pass some or all of their genome onto their progeny.
29.4K
Multicompartment Models: Overview
258
Multicompartment models are mathematical constructs that depict how drugs are distributed and eliminated within the body. They segment the body into several compartments, symbolizing various physiological or anatomical areas connected through drug transfer processes such as absorption, metabolism, distribution, and elimination.
These models offer a more comprehensive representation of drug behavior in the body than one-compartment models. They accommodate the complexity of drug distribution,...
These models offer a more comprehensive representation of drug behavior in the body than one-compartment models. They accommodate the complexity of drug distribution,...
258
Distributions to Estimate Population Parameter
4.3K
The accurate values of population parameters such as population proportion, population mean, and population standard deviation (or variance) are usually unknown. These are fixed values that can only be estimated from the data collected from the samples. The estimates of each of these parameters are sample proportion, the sample mean, and sample standard deviation (or variance). To obtain the values of these sample statistics, data are required that have particular distribution and central...
4.3K
Generalization, Discrimination, and Extinction
802
Generalization, discrimination, and extinction are key concepts in operant conditioning that influence how behaviors are learned and maintained.
Generalization occurs when a behavior reinforced in one context is performed in similar situations. For instance, a student who studies diligently for calculus and receives excellent grades might apply the same study habits to psychology and history, expecting similar results. Generalization shows how learning in one setting can influence behavior in...
Generalization occurs when a behavior reinforced in one context is performed in similar situations. For instance, a student who studies diligently for calculus and receives excellent grades might apply the same study habits to psychology and history, expecting similar results. Generalization shows how learning in one setting can influence behavior in...
802
Distribution and Dispersion
22.4K
To understand intra-specific interactions in populations, scientists measure the spatial arrangement of species individuals. This geographic arrangement is known as the species distribution or dispersion. Highly territorial species exhibit a uniform distribution pattern, in which individuals are spaced at relatively equal distances from one another. Species that are highly tied to particular resources, such as food or shelter, tend to concentrate around those resources, and thus exhibit a...
22.4K


