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用高斯过程分析基因表达数据

Analysing Gene Expression Data Using Gaussian Processes
课程网址: http://videolectures.net/gpip06_wernisch_agedu/  
主讲教师: Lorenz Wernisch
开课单位: 伦敦大学学院
开课时间: 2007-02-25
课程语种: 英语
中文简介:
复杂的基因调控机制确保了生物细胞的正常运作。新的高通量实验技术,例如微阵列,同时提供了数千个基因的基因表达水平的快照。如果在同步细胞样品上重复,则可以获得基因活性的时间序列图谱。目的是重建这些概况下的复杂基因调控网络。基因经常以非线性方式相互影响,并且具有错综复杂的交互模式。线性模型通常不适合捕获这种关系。另一方面,高斯过程是表示非线性关系的理想选择。一个特别的吸引力是自动相关性确定效果,去除未使用的输入并导致稀疏的基因网络。
课程简介: Complex gene regulatory mechanisms ensure the proper functioning of biological cells. New high-throughput experimental techniques, such as microarrays, provide a snapshot of gene expression levels of thousands of genes at the same time. If repeated on a sample of synchronized cells, time-series profiles of gene activity can be obtained. The aim is to reconstruct the complex gene regulatory network underlying these profiles. Genes often influence each other in a nonlinear fashion and with intricate interaction patterns. Linear models are often unsuited to capture such relationships. Gaussian processes, on the other hand, are ideal for representing nonlinear relationships. A particular attraction is the automatic relevance determination effect, removing unused inputs and resulting in sparse gene networks.
关 键 词: 基因调控; 生物细胞; 高通量
课程来源: 视频讲座网
最后编审: 2020-10-22:chenxin
阅读次数: 64