缺乏监督的标签学习流
You Lu1, Wenzhuo Song2, Chidubem Arachie3
1Motional, 100 Northern Ave Suite 200, Boston, 02210, US.
概括
弱监督学习使用近似标签来训练模型,降低数据成本. 本研究介绍了标签学习流 (LLF),这是一个优化标签可能性的生成框架,优于现有方法.
科学领域:
- 机器学习 机器学习
- 人工智能的人工智能
- 数据科学数据科学数据科学
背景情况:
- 监督学习需要大量的标记数据,这往往是昂贵的获取.
- 弱监督学习通过使用更便宜,近似的标签 (弱信号) 提供了一个替代方案.
- 现有的方法经常学习决定性函数,这可能无法完全捕捉标签不确定性.
研究的目的:
- 为缺乏监督的学习问题引入一个称为标签学习流 (LLF) 的一般框架.
- 开发一种基于标签学习规范化流量的新型生成模型.
- 为了优化数据标签的条件概率在弱信号约束范围内.
主要方法:
- 开发了标签学习流 (LLF),一种利用规范化流的生成模型.
- 提出了一种训练方法,可以逆向优化条件概率,避免直接标签估计.
- 采用采样算法在模型训练后进行预测.
主要成果:
- 应用LLF到三个不同的弱监督的学习任务.
- 证明了LLF的表现优于几种既定的基线方法.
- 在监管较弱的环境中验证了生成方法的有效性.
结论:
- 标签学习流 (LLF) 为低监督学习提供了一个强大而灵活的框架.
- 生成方法有效地处理标签的不确定性,并优化标签的可能性.
- 在具有有限标记数据的场景中,LLF为传统决定性方法提供了一个有希望的替代方案.
更多相关视频
相关概念视频
Associative Learning
298
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...
298
Classification of Systems-I
169
Linearity is a system property characterized by a direct input-output relationship, combining homogeneity and additivity.
Homogeneity dictates that if an input x(t) is multiplied by a constant c, the output y(t) is multiplied by the same constant. Mathematically, this is expressed as:
Homogeneity dictates that if an input x(t) is multiplied by a constant c, the output y(t) is multiplied by the same constant. Mathematically, this is expressed as:
169
Classification of Systems-II
134
Continuous-time systems have continuous input and output signals, with time measured continuously. These systems are generally defined by differential or algebraic equations. For instance, in an RC circuit, the relationship between input and output voltage is expressed through a differential equation derived from Ohm's law and the capacitor relation,
134
Force Classification
1.1K
Forces play a crucial role in the study of physics and engineering. They are essential in describing the motion, behavior, and equilibrium of objects in the physical world. Forces can be classified based on their origin, type, and direction of action.
Contact and non-contact forces are two of the most widely used categories of forces. As the name suggests, contact forces require physical contact between two objects to act upon each other. Examples of contact forces include frictional,...
Contact and non-contact forces are two of the most widely used categories of forces. As the name suggests, contact forces require physical contact between two objects to act upon each other. Examples of contact forces include frictional,...
1.1K
Labeling Emotion
107
Emotional labeling is a cognitive process that involves identifying and naming one's emotions, such as anger, fear, happiness, or sadness. It allows individuals to recognize and express their internal emotional states, a critical aspect of emotional regulation and communication. Labeling emotions requires more than mere recognition; it also involves drawing upon memory and contextual cues to understand the current situation and apply a corresponding emotional label. For instance, feeling...
107
Classification of Signals
403
In signal processing, signals are classified based on various characteristics: continuous-time versus discrete-time, periodic versus aperiodic, analog versus digital, and causal versus noncausal. Each category highlights distinct properties crucial for understanding and manipulating signals.
A continuous-time signal holds a value at every instant in time, representing information seamlessly. In contrast, a discrete-time signal holds values only at specific moments, often denoted as x(n), where...
A continuous-time signal holds a value at every instant in time, representing information seamlessly. In contrast, a discrete-time signal holds values only at specific moments, often denoted as x(n), where...
403


