寻求利用深度学习中的记忆效应,使用噪音标签
概括
这项研究引入了一种新的双层优化方法,用于从噪音标签中进行强有力的学习. 该方法有效地控制样本选择,提高深度网络性能,优于现有的自动化机器学习技术.
科学领域:
- 机器学习 机器学习
- 深度学习 (Deep Learning) 是一种深度学习.
- 计算机科学 计算机科学
背景情况:
- 对于深度网络来说,从噪音标签中进行强有力的学习至关重要.
- 控制样本选择以利用记忆效应仍然具有挑战性.
- 自动机器学习 (AutoML) 在相关领域取得了成功.
研究的目的:
- 提出一种新的双层优化框架,用于控制强大的学习中的样本选择.
- 通过有效利用记忆效应来提高深度网络性能.
- 开发一种有效的方法,以找到最佳的样本选择时间表.
主要方法:
- 采用双层优化策略,在上层对选择过程进行参数化,并在下层通过模型培训进行优化.
- 集成了半监督学习算法,以利用有噪音标记的数据作为未标记的数据.
- 两级优化问题是使用牛顿和立方正规化方法解决的,考虑到验证曲率.
主要成果:
- 牛顿和立方正规化方法都汇聚到近似的静止点.
- 立方正规化在减少计算时间的情况下找到更好的局部最佳值方面表现出卓越的性能.
- 拟议的方法在基准和现实世界数据集上取得了明显的改进,而不是现有的技术.
结论:
- 拟议的双层优化方法有效地控制了从噪音标签中进行强有力的学习的样本选择.
- 立方正规化方法为优化问题提供了高效有效的解决方案.
- 这项研究为优化样本选择时间表提供了比现有的AutoML方法更有效的替代方案.
更多相关视频
相关概念视频
01:16Interference and Decay
136
Forgetting is a complex cognitive phenomenon influenced by several factors, among which interference and decay are particularly prominent. These processes explain why individuals often struggle to retrieve specific information from memory, leading to lapses in recall that can be observed in everyday situations.
Interference occurs when competing memories hinder the retrieval of particular information. It can be classified into two types: proactive and retroactive interference. Proactive...
Interference occurs when competing memories hinder the retrieval of particular information. It can be classified into two types: proactive and retroactive interference. Proactive...
136
01:27Associative Learning
345
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...
345
01:22Chunking and Rehearsal in Sensory Memory
202
Improving short-term memory can be achieved through techniques like chunking and rehearsal. Chunking involves organizing information into larger, more manageable units. This technique is particularly useful for information that exceeds the typical memory span of between five and nine items. For instance, logging into an online account with a password like "ta89vq0179gz" involves grouping letters and numbers into three chunks—ta89, vq01, and 79gz. It makes large amounts of...
202
01:21Forgetting
71
Forgetting is an intrinsic aspect of human memory, characterized by the gradual loss or inaccessibility of information over time. Hermann Ebbinghaus, a pioneering psychologist, extensively studied this phenomenon and formulated the forgetting curve. This curve illustrates that memory loss occurs rapidly immediately after learning and then decelerates over time. Several mechanisms contribute to forgetting, including encoding failure, storage decay, retrieval failure, and interference.
Encoding...
Encoding...
71
02:07Improving Translational Accuracy
10.2K
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...
10.2K
01:07Elaborative Rehearsals
86
Elaborative rehearsal is a crucial cognitive strategy that strengthens information encoding in long-term memory by making meaningful connections between new data and pre-existing knowledge. This approach contrasts with maintenance rehearsal, which involves simple repetition without delving into the significance of the information. While maintenance rehearsal might temporarily keep information active in short-term memory, it is less effective for long-term retention.
The effectiveness of...
The effectiveness of...
86