机器学习方法在以前难以处理的复杂物种中划分密码分类
Haley L A Heine1, Shahan Derkarabetian2, Rina Morisawa1
1Biology Department, Macalester College, 1600 Grand Ave., St. Paul, MN 55105, USA.
Molecular phylogenetics and evolution
|March 14, 2024
概括
机器学习有效地使用超保存元素 (UCE) 遗传数据识别低分散的蜘蛛中的神秘物种. 这种方法避免了分类的过度分裂,揭示了Aoraki denticulata.的现实物种分布.
科学领域:
- 基因组学就是基因组学.
- 生物信息学是一种生物信息学.
- 进化生物学 进化生物学
背景情况:
- 隐秘的物种缺乏形态区别,但可以通过DNA检测到.
- 现有的遗传方法有过度分裂物种的风险,特别是在低分散生物中.
- 机器学习 (ML) 为提高物种划界精度提供了一个潜在的解决方案.
研究的目的:
- 应用ML方法来划分Aoraki denticulata综合体内的物种.
- 评估ML在处理低流动性物种极端种群结构方面的有效性.
- 为了将ML结果与以前对同一分类群的物种划分研究进行比较.
主要方法:
- 利用了通过混合目标丰富超保守元素 (UCE) 生成的大数据集.
- 应用了无监督和监督的ML分析来确定物种界限.
- 结合了来自广泛动物群体和分布有限的类似物体的训练数据.
主要成果:
- 与以前的研究不同,ML方法识别了具有现实的地理范围的神秘物种.
- 结果与已知分布的形态可诊断的虫收获者一致.
- ML在与低流动性隐形物种复合体中的物种划分方面被证明是有效的.
结论:
- 应用于UCE数据的ML是一种可靠的方法,用于低流动性隐形物种的物种划分.
- 使用生物相关的训练数据可以提高ML分析的信息性.
- 这项研究验证了ML作为解决复杂物种界限的卓越工具.
相关概念视频
Evolutionary Relationships through Genome Comparisons
5.7K
Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
5.7K
Phylogenetic Trees
45.3K
Phylogenetic trees come in many forms. It matters in which sequence the organisms are arranged from the bottom to the top of the tree, but the branches can rotate at their nodes without altering the information. The lines connecting individual nodes can be straight, angled, or even curved.
45.3K
Gene Evolution - Fast or Slow?
7.1K
The genomes of eukaryotes are punctuated by long stretches of sequence which do not code for proteins or RNAs. Although some of these regions do contain crucial regulatory sequences, the vast majority of this DNA serves no known function. Typically, these regions of the genome are the ones in which the fastest change, in evolutionary terms, is observed, because there is typically little to no selection pressure acting on these regions to preserve their sequences.
In contrast, regions which code...
In contrast, regions which code...
7.1K
Taxonomy
74.1K
Taxonomy is the science of defining and naming groups of biological organisms based on shared characteristics. It uses a hierarchy of increasingly inclusive categories with Latin names. The smallest units of taxonomy, species and genus, are used to assign a formal, taxonomic name to each species in a system. This classification system, referred to as binomial nomenclature, was formalized by Carolus Linnaeus in the 18th century.
Hierarchy of Taxonomy
The hierarchy that Carolus Linnaeus first...
Hierarchy of Taxonomy
The hierarchy that Carolus Linnaeus first...
74.1K
Mechanistic Models: Compartment Models in Algorithms for Numerical Problem Solving
53
Mechanistic models play a crucial role in algorithms for numerical problem-solving, particularly in nonlinear mixed effects modeling (NMEM). These models aim to minimize specific objective functions by evaluating various parameter estimates, leading to the development of systematic algorithms. In some cases, linearization techniques approximate the model using linear equations.
In individual population analyses, different algorithms are employed, such as Cauchy's method, which uses a...
In individual population analyses, different algorithms are employed, such as Cauchy's method, which uses a...
53
Phylogeny
44.0K
Phylogeny is concerned with the evolutionary diversification of organisms or groups of organisms. A group of organisms with a name is called a taxon (singular). Taxa (plural) can span different levels of the evolutionary hierarchy. For instance, the group containing all birds is a taxon (comprising the class Aves), and the group of all species of daisies (the genus Bellis) is a taxon. Phylogenies can likewise include just one genus (i.e., depict species relationships) or span an entire kingdom.
44.0K


