首页生物学
0


机器学习的生物网络模型

Machine Learning Biological Network Models
课程网址: http://videolectures.net/solomon_muggleton_mlbn/  
主讲教师: Stephen Muggleton
开课单位: 伦敦帝国学院
开课时间: 2010-04-28
课程语种: 英语
中文简介:
在本次演讲中,我们调查了帝国理工学院综合系统生物学中心正在进行的关于利用机器学习建立生化途径模型的工作。在系统生物学领域,这些模型提供了基于图形的生物分子相互作用描述,描述了细胞活动,如基因调控,代谢和转录。归纳逻辑程序设计方法的主要优点之一是可从公共资源(如KEGG和Biocyc)获得现有已知生物化学网络的背景知识。由于其在生物学和医学中的应用,该主题具有明显的社会影响。此外,该领域中的对象描述具有所涉及分子的空间和时间相互作用形式的固有关系结构。这种关系包括生化反应,其中一组代谢物通过酶的参与转化为另一组代谢物。关于基因和代谢物的功能甚至存在,现有的基因组信息非常不完整,导致逻辑外展等技术必须引入新功能和发明新物体。此外,主动学习算法的发展允许自动建议新的实验来测试新的假设。因此,该方法为假设生成和实验测试的整个科学循环提供支持。
课程简介: In this talk we survey work being conducted at the Centre for Integrative Systems Biology at Imperial College on the use of machine learning to build models of biochemical pathways. Within the area of Systems Biology these models provide graph-based descriptions of bio-molecular interactions which describe cellular activities such as gene regulation, metabolism and transcription. One of the key advantages of the approach taken, Inductive Logic Programming, is the availability of background knowledge on existing known biochemical networks from publicly available resources such as KEGG and Biocyc. The topic has clear societal impact owing to its application in Biology and Medicine. Moreover, object descriptions in this domain have an inherently relational structure in the form of spatial and temporal interactions of the molecules involved. The relationships include biochemical reactions in which one set of metabolites is transformed to another mediated by the involvement of an enzyme. Existing genomic information is very incomplete concerning the functions and even the existence of genes and metabolites, leading to the necessity of techniques such as logical abduction to introduce novel functions and invent new objects. Moreover, the development of active learning algorithms has allowed automatic suggestion of new experiments to test novel hypotheses. The approach thus provides support for the overall scientific cycle of hypothesis generation and experimental testing.
关 键 词: 生物学; 基因调控; 代谢产物
课程来源: 视频讲座网
最后编审: 2020-07-30:yumf
阅读次数: 50