FA-GCL:特征增强图形对比学习方法
1National Key Laboratory of Information Systems Engineering, Changsha, 410000, China.
概括
本研究引入基于特征增强的图形对比学习 (FA-GCL) 来增强图形表示. 通过使用动态脱落和单数值分解来增强特征,FA-GCL提高了准确性和稳定性,优于现有的方法.
科学领域:
- 图形表示学习
- 机器学习
- 数据科学
背景情况:
- 现有的图形对比学习方法通常依赖于完整的节点属性或结构信息.
- 不完整的节点属性和结构增强的假阳性阻碍了现实世界的图形数据的性能.
- 需要强大的图形表示学习技术,这些技术对数据完整性不那么敏感.
研究的目的:
- 提出一种新的基于特征增强的图形对比学习 (FA-GCL) 方法.
- 提高图表表示的准确性和稳定性.
- 解决现有方法在处理不完整的节点属性和结构噪声方面的局限性.
主要方法:
- 采用基于动态弃的特征增强技术,具有适应性弃率的三角波函数.
- 介绍了基于单数值分解 (SVD) 的两个特征增强方法:全SVD和随机投影SVD.
- SVD方法为单数值添加受控噪声,并为高质量的增强样本重建特征,随机SVD提供线性复杂性.
主要成果:
- 在12个图表数据集中,FA-GCL表现出一致的优异性能.
- 该方法在节点分类,节点聚类和图形分类任务中明显优于基线方法.
- 功能增强在提高学习图表表示的质量和稳定性方面是有效的.
结论:
- FA-GCL为图形表示学习提供了强大而有效的方法,特别是当节点属性不完整时.
- 拟议的特征增强策略提高了模型的性能和通用性.
- 这项工作通过引入灵活而强大的数据增强技术来推进图形对比学习.
相关概念视频
Associative Learning
566
Associative learning is a fundamental concept in behavioral psychology, wherein a connection is established between two stimuli or events, leading to a learned response. This process is critical in understanding how behaviors are acquired and modified. Conditioning, the mechanism through which associations are formed, can be divided into two main types: classical conditioning and operant conditioning, each elucidating different aspects of associative learning.
Classical conditioning, also known...
Classical conditioning, also known...
566
Vector Algebra: Graphical Method
13.5K
Vectors can be multiplied by scalars, added to other vectors, or subtracted from other vectors. The vector sum of two (or more) vectors is called the resultant vector or, for short, the resultant.
We use the laws of geometry to construct resultant vectors, followed by trigonometry to find vector magnitudes and directions. For a geometric construction of the sum of two vectors in a plane, we follow the parallelogram rule. Suppose two vectors are at arbitrary positions. Translate either one of...
We use the laws of geometry to construct resultant vectors, followed by trigonometry to find vector magnitudes and directions. For a geometric construction of the sum of two vectors in a plane, we follow the parallelogram rule. Suppose two vectors are at arbitrary positions. Translate either one of...
13.5K
Cognitive Learning
513
Cognitive learning is based on purposive behavior, incidental learning, and insight learning.
E. C. Tolman's theory of purposive behavior emphasizes that much behavior is goal-directed. He argued that to understand behavior, we must look at the entire sequence of actions leading to a goal. For instance, high school students study hard, not just due to past reinforcement but also to achieve the goal of getting into a good college.
Tolman introduced the idea that behavior is influenced by...
E. C. Tolman's theory of purposive behavior emphasizes that much behavior is goal-directed. He argued that to understand behavior, we must look at the entire sequence of actions leading to a goal. For instance, high school students study hard, not just due to past reinforcement but also to achieve the goal of getting into a good college.
Tolman introduced the idea that behavior is influenced by...
513
Observational Learning
305
Albert Bandura's observational learning, also known as imitation or modeling, occurs when a person observes and imitates another's behavior. It is a quicker process than operant conditioning. A well-known example is the Bobo doll study, where children who saw an adult acting aggressively towards the doll were more likely to act aggressively when left alone, compared to those who observed a nonaggressive adult. Many psychologists view observational learning as a form of latent learning...
305
Introduction to Learning
528
Learning is the process of acquiring knowledge or skills through practice or experience, leading to long-lasting behavioral changes. This acquisition occurs through interaction with the environment and requires practice or experience. For instance, mastering a skill such as surfing requires considerable practice and experience, highlighting the essential role of repeated interactions with the environment in learning.
In contrast to learned behaviors, unlearned behaviors such as crying, sexual...
In contrast to learned behaviors, unlearned behaviors such as crying, sexual...
528
Generalization, Discrimination, and Extinction
781
Generalization, discrimination, and extinction are key concepts in operant conditioning that influence how behaviors are learned and maintained.
Generalization occurs when a behavior reinforced in one context is performed in similar situations. For instance, a student who studies diligently for calculus and receives excellent grades might apply the same study habits to psychology and history, expecting similar results. Generalization shows how learning in one setting can influence behavior in...
Generalization occurs when a behavior reinforced in one context is performed in similar situations. For instance, a student who studies diligently for calculus and receives excellent grades might apply the same study habits to psychology and history, expecting similar results. Generalization shows how learning in one setting can influence behavior in...
781


