Differential Markov random field analysis with an application to detecting differential microbial community networks
差异马尔可夫随机场分析及微生物群落网络差异检测AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要明确研究网络结构差异、稀疏连接变化及网络检验,对应网络方向,但对象为微生物网络且未涉及经济干扰效应。
差异马尔可夫随机场分析及微生物群落网络差异检测AI 解读 ↓
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Micro-organisms such as bacteria form complex ecological community networks that can be greatly influenced by diet and other environmental factors. Differential analysis of microbial community structures aims to elucidate systematic changes during an adaptive response to changes in environment. In this paper, we propose a flexible Markov random field model for microbial network structure and introduce a hypothesis testing framework for detecting differences between networks, also known as differential network analysis. Our global test for differential networks is particularly powerful against sparse alternatives. In addition, we develop a multiple testing procedure with false discovery rate control to identify the structure of the differential network. The proposed method is applied to data from a gut microbiome study on U.K. twins to evaluate how age affects the microbial community network.