相关实验视频

Updated: Jan 31, 2026

A Lipid Extraction and Analysis Method for Characterizing Soil Microbes in Experiments with Many Samples

A Lipid Extraction and Analysis Method for Characterizing Soil Microbes in Experiments with Many Samples

Published on: July 16, 2017

贝叶斯链图模型用于描述微生物环境动态

Yunyi Shen¹, Claudia Solís-Lemus²

¹Department of Statistics, University of Wisconsin-Madison, Madison, WI, USA.

Mathematical biosciences and engineering : MBE

|January 29, 2026

概括

这项研究引入了一种新的链图模型 (CG-LASSO) 来分析微生物群数据,有效解码微生物反应和相互作用. 它准确地表示条件依赖,在模拟和现实数据集上表现优于现有方法.

科学领域:

微生物生态学微生物生态学
统计建模统计建模
生物信息学是一种生物信息学.

背景情况:

微生物组数据分析需要捕捉环境反应和微生物相互作用的模型.
标准的多响应线性回归对于图形建模是不够的,原因是编码条件依赖结构的局限性.
之前的生物学知识,特别是从实验干预中获得的知识,需要能够正确编码条件依赖的模型.

研究的目的:

提出一种用于微生物组数据分析的新型链图模型.
开发一个统计框架,准确地表示微生物反应和环境预测因素之间的条件依赖.
为推断微生物网络结构提供一个计算效率高,灵活的模型.

主要方法:

开发了一个链图模型,具有不同的预测器和响应节点集.
贝叶斯线性回归与LASSO调整用于稀疏的解决方案.
一个自适应的扩展允许边缘特定的收缩,并结合了先前的知识.
吉布斯采样算法确保了计算效率.
层次结构容纳了二进制,计数和组成的响应类型.

主要成果:

拟议的模型产生了图形,边缘代表条件依赖,与实验直觉对齐.
该模型在模拟数据集上的最先进方法相比,显示出更高的性能.
对人类肠道和土壤微生物群数据的应用揭示了生物学上有意义的网络结构.
通过CG-LASSO方法有效估计微生物相互作用网络.

结论:

拟议的链图模型 (CG-LASSO) 为微生物组网络推断提供了一个强大的框架.
它准确地捕捉了条件依赖,并整合了先前的生物知识.
该模型为分析复杂的微生物社区数据提供了计算效率高和灵活的方法.

关键词:

组合数据是指组合数据的组成数据.直接影响直接影响.互动互动网络互动网络线性回归是一种线性回归.微生物组是一个微生物组.

更多相关视频

A Novel Bayesian Change-point Algorithm for Genome-wide Analysis of Diverse ChIPseq Data Types

A Novel Bayesian Change-point Algorithm for Genome-wide Analysis of Diverse ChIPseq Data Types

Published on: December 10, 2012

Extracting DNA from the Gut Microbes of the Termite Zootermopsis Angusticollis and Visualizing Gut Microbes

Extracting DNA from the Gut Microbes of the Termite Zootermopsis Angusticollis and Visualizing Gut Microbes

Published on: May 28, 2007

相关概念视频

Ogive Graph

Ogive Graph

An ogive graph is sometimes called a cumulative frequency polygon. It is one type of frequency polygon that shows cumulative frequency. In other words, the cumulative percentages are added to the graph from left to right. An ogive graph plots cumulative frequency on the vertical y-axis and class boundaries along the horizontal x-axis. It’s very similar to a histogram; only instead of rectangles, an ogive displays a single point where the top right of the rectangle would be. Creating this...

Graphing Antiderivatives

Graphing Antiderivatives

The concept of an antiderivative is fundamental in calculus, describing how a function's values accumulate over time. This process is closely related to physical motion, such as the movement of a rolling ball. As the ball progresses, its position changes in response to variations in velocity, just as an antiderivative graph reflects the cumulative effect of the original function's values.Graphing an antiderivative requires interpreting how a function's values influence the shape of its...

Bar Graph

Bar Graph

A bar graph is also called a bar chart and consists of bars that are separated from each other. It either uses horizontal or vertical bars to show comparisons among categories. The bars can be rectangles, or they can be rectangular boxes (used in three-dimensional plots). One axis of the graph represents the specific categories being compared, and the other axis shows a discrete value. In this graph, the length of the bar for each category is proportional to the number or percent of individuals...

Graphs of Functions

Graphs of Functions

Graphs of functions provide a visual representation of how output values change in response to varying inputs. Each point on the graph corresponds to an ordered pair, where the x-coordinate (independent variable) determines the horizontal position and the y-coordinate (dependent variable) determines the vertical position. Linear functions like y = x give a straight line, indicating a constant rate of change.Nonlinear functions display more complex behaviors. Even power functions generate...

Electron Transport Chains

Electron Transport Chains

The final stage of cellular respiration is oxidative phosphorylation that consists of two steps: the electron transport chain and chemiosmosis. The electron transport chain is a set of proteins found in the inner mitochondrial membrane in eukaryotic cells. Its primary function is to establish a proton gradient that can be used during chemiosmosis to produce ATP and generate electron carriers, such as NAD+ and FAD, that are used in glycolysis and the citric acid cycle.
The ETC is comprised of...

Time-Series Graph

Time-Series Graph

A time-series graph is a line graph with repeated measurements taken at successive intervals of time. It is also called a time series chart. To construct a time-series graph, one must look at both pieces of a paired data set. The horizontal axis is used to plot the time increments, and the vertical axis is used to plot the values of the variable that one is measuring. By using the axes in this way, each point on the graph will correspond to time and a measured quantity. The points on the graph...