ICCTax:在大型语言模型上对元基因组序列的层次分类分类器
Yichun Gao1, Jiaxing Bai1, Feng Zhou1
1Department of Automation, National Institute for Data Science in Health and Medicine, State Key Laboratory of Mariculture Breeding, Xiamen Key Laboratory of Big Data Intelligent Analysis and Decision, Xiamen University, Fujian 361102, China.
Bioinformatics advances
|November 18, 2025
概括
ICCTax是一种新的分类器,使用大型语言模型准确地识别了四个超级王国的分类基因组序列. 它的性能优于现有方法,特别是新数据,有助于微生物社区分析和新物种发现.
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.
- 微生物生态学 微生物生态学
背景情况:
- 大基因组数据分析需要对古生物,细菌,真核生物和病毒进行准确的分类学分类.
- 现有的方法与不平衡的,层次化的数据和不完整的参考数据库作斗争.
- 大型语言模型为提取序列特征提供了一种新的方法.
研究的目的:
- 开发一种新的分类器,ICCTax,用于准确地对基因组序列进行分类识别.
- 为了提高分类性能,利用大型语言模型.
- 改善对微生物群落的理解,并识别新的物种.
主要方法:
- 整合了HyenaDNA大型语言模型与层级度量学习和紧性损失.
- 开发了ICCTax用于四个超级王国的分类学分类.
- 在各种数据集上评估性能,包括分布之外的数据.
主要成果:
- ICCTax准确地将序列分为155个属和43个属,包括看不见的种类.
- 在多个数据集 (海洋元基因组学,乳制品DB,塔拉海洋,废水) 中超越了基线方法.
- 在分布之外的数据上表现出强的表现,突出了现实世界的适用性.
结论:
- ICCTax为基因组序列的分类学分类提供了一个强大的解决方案.
- 增强对微生物生态的理解,并促进新物种和基因识别.
- 代码的可用性支持进一步的研究和应用.
相关概念视频
Modern Molecular Taxonomy
554
Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...
554
Evolutionary Relationships through Genome Comparisons
6.8K
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...
6.8K
Applications of Molecular Taxonomy
489
Molecular taxonomy has revolutionized the understanding and classification of bacteria, providing precise insights into their diversity, evolutionary relationships, and ecological roles. By utilizing molecular techniques such as DNA sequencing and fingerprinting, researchers have made significant strides in various fields related to bacterial studies.Resolving Taxonomic AmbiguitiesMolecular taxonomy has been instrumental in distinguishing closely related bacterial species initially thought to...
489
Microbial Classification System
888
Classification is the process of organizing organisms into hierarchically inclusive groups based on their phenotypic similarities or evolutionary relationships. A species comprises one or more strains, and closely related species are grouped into genera. Genera are further classified into families, families into orders, orders into classes, and so forth, up to the domain level, which is the broadest taxonomic rank derived from a combination of phenotypic and genotypic data.The nomenclature of...
888
Taxonomy
84.2K
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...
84.2K
Comparing Mitochondrial, Chloroplast, and Prokaryotic Genomes
15.0K
The present-day mitochondrial and chloroplast genomes have retained some of the characteristics of their ancestral prokaryotes and also have acquired new attributes during their evolution within eukaryotic cells. Like prokaryotic genomes, mitochondrial and chloroplast genomes neither bind with histone-like proteins nor show complex packaging into chromosome-like structures, as observed in eukaryotes. Unlike mitotic cell divisions observed in eukaryotic cells, mitochondria and chloroplasts...
15.0K


