估计阅读时长: 27 分钟宏基因组测序直接从环境样本获取所有生物的遗传物质,产生的海量短读序列(reads)需要被快速准确地分类到不同物种或功能类别。然而,宏基因组数据具有复杂性高、物种多样且未知序列多等特点,这给分类算法带来了巨大挑战。传统的序列比对方法虽然准确,但在面对庞大的参考数据库时计算开销巨大,难以满足实时分析的需求。因此,研究者开发了多种基于k-mer(长度为k的子序列)的快速分类方法,其中布隆过滤器(Bloom Filter)作为一种高效的概率数据结构,在针对测序reads做物种上的快速分类这项工作中起到了一些关键作用。 Attachments Capture • 112 kB • 71 click 2025年12月19日
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Hi, appreciate the effort put into this. It's always good to see quality content. 🥳
WOOOOOW This was incredibly helpful and easy to understand. I've learned a lot. many thanks to your idea sharing.
[…] 在前面写了一篇文章来介绍我们可以如何通过KEGG的BHR评分来注释直系同源。在KEGG数据库的同源注释算法中,BHR的核心思想是“双向最佳命中”。它比简单的单向BLAST搜索(例如,只看你的基因A在数据库里的最佳匹配是基因B)更为严格和可靠。在基因注释中,这种方法可以有效减少因基因家族扩张、结构域保守等原因导致的假阳性注释,从而更准确地识别直系同源基因,而直系同源基因通常具有相同的功能。在今天重新翻看了下KAAS的帮助文档之后,发现KAAS系统中更新了下面的Assignment score计算公式: […]
不常看到, 没有多余矫饰的表达。敬意。
[…] 在前面写了一篇文章来介绍我们可以如何通过KEGG的BHR评分来注释直系同源。在今天重新翻看了下KAAS的帮助文档之后,发现KAAS系统中更新了下面的Assignment score计算公式: […]