在网络生物学中对链接预测算法的偏见意识培训和评估
Serhan Yılmaz1, Kaan Yorgancioglu1, Mehmet Koyutürk1
1Department of Computer and Data Sciences, Case Western Reserve University, Cleveland, OH 44106.
概括
生物医学中的链接预测算法偏向于经过充分研究的"丰富节点". 我们建议AWARE策略和加权验证专注于研究不足的蛋白质,改进新发现的算法开发.
科学领域:
- 生物医学信息学是生物医学信息学.
- 网络科学 网络科学
- 机器学习是机器学习.
背景情况:
- 链接预测算法对于生物医学应用至关重要,有助于理解复杂的生物网络.
- 目前的评估方法,使用随机边缘采样,显示偏向向高度节点 ("丰富节点").
- 这种偏见使研究周期延续,过度强调研究完善的实体,忽视研究不足的实体.
研究的目的:
- 解决生物医学网络中评估链接预测算法的偏见.
- 引入促进对研究不足的生物实体进行公平评估和开发算法的方法.
- 通过专注于低度节点来改善新生物见解的发现.
主要方法:
- 开发一个加权验证设置,以优先考虑低度节点.
- 引入AWARE (偏见意识的REsearch) 培训和评估策略.
- 在拟议的加权设置下对链接预测算法进行计算评估.
主要成果:
- 在标准的统一随机抽样评估方法中向丰富节点展示偏差.
- 验证拟议的加权设置和AWARE策略来缓解这种偏差.
- 证据表明,即使有多个网络快照,这种偏差仍然存在.
结论:
- 生物医学中的标准链接预测评估是有缺陷的,原因是丰富的节点偏差.
- 建议的加权验证和AWARE战略提供了更公平的方法.
- 这些方法可以促进开发算法,在研究不足的生物领域发现新发现.
更多相关视频
相关概念视频
Ligand Binding and Linkage
4.9K
Allosteric proteins have more than one ligand binding site; the binding of a ligand to any of these sites influences the binding of ligands to the other sites. When a protein is allosteric, its binding sites are called coupled or linked. In the case of enzymes, the site that binds to the substrate is known as the active site and the other site is known as the regulatory site. When a ligand binds to the regulatory site, this leads to conformational changes in the protein that can influence...
4.9K
Protein Networks
4.1K
An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other proteins and form complexes to carry out their functions. Many proteins interact with multiple other proteins creating a complex network of protein interactions.
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
4.1K
Protein-protein Interfaces
13.8K
Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a...
13.8K
Improving Translational Accuracy
11.9K
Base complementarity between the three base pairs of mRNA codon and the tRNA anticodon is not a failsafe mechanism. Inaccuracies can range from a single mismatch to no correct base pairing at all. The free energy difference between the correct and nearly correct base pairs can be as small as 3 kcal/ mol. With complementarity being the only proofreading step, the estimated error frequency would be one wrong amino acid in every 100 amino acids incorporated. However, error frequencies observed in...
11.9K


