基于边界的主动域适应在不利条件下的语义细分
IEEE transactions on neural networks and learning systems
|March 27, 2025
概括
本研究引入了基于边界的主动域适应 (ADA) 框架,以改善在不利条件下的语义细分. 它有效地选择信息样本,优于现有方法,并实现与全面监督相提并论的性能.
科学领域:
- 计算机视觉 计算机视觉
- 机器学习 机器学习
- 人工智能的人工智能
背景情况:
- 现有的域调整语义细分 (DASS) 方法依赖于伪标签,这些标签往往是杂和有偏见的.
- 这种噪音和偏差阻碍了DASS的性能改进,特别是在不利的条件下.
研究的目的:
- 提出一个基于边界的新型主动域适应 (ADA) 框架,以解决DASS.中伪标签的局限性.
- 在有限的预算范围内,有效地选择具有信息性的低信任度和高信任度但错误分类的样本进行标签.
主要方法:
- 引入了排名加权特征空间不纯度 (RWFSI) 度量,以识别接近决策边界的低置信性样本.
- 利用高斯混合模型 (GMMs) 来建模域分布,并定义一个类内域转移得分 (ICDSS) 来找到高可信度但错误分类的样本.
主要成果:
- 与现有的DASS和主动学习 (AL) 方法相比,拟议的ADA框架显著提高了细分性能.
- 实现了与完全监督的方法可比的性能,证明了其有效性.
结论:
- 基于边界的ADA框架通过智能选择标注样本,为DASS提供了更好的方法.
- 这种方法有效地减轻了与杂的伪标签相关的问题,并在具有挑战性的条件下提高了细分精度.
相关概念视频
Electrostatic Boundary Conditions
1.2K
Consider an external electric field propagating through a homogeneous medium. When the electric field crosses the surface boundary of the medium, it undergoes a discontinuity. The electric field can be resolved into normal and tangential components. The amount by which the field changes at any boundary is given by the difference between the field components above and below the surface boundary.
The surface integral of an electric field is given by Gauss's law in integral form and is related to...
The surface integral of an electric field is given by Gauss's law in integral form and is related to...
1.2K
Electrostatic Boundary Conditions in Dielectrics
2.1K
When an electric field passes from one homogeneous medium to another, crossing the boundary between the two mediums imparts a discontinuity in the electric field. This results in electrostatic boundary conditions that depend on the type of mediums the field propagates through.
Consider a case where both the mediums across a boundary are two different dielectric materials. Recall that the electric field and electric displacement are proportional and related through the material's permittivity....
Consider a case where both the mediums across a boundary are two different dielectric materials. Recall that the electric field and electric displacement are proportional and related through the material's permittivity....
2.1K
Active Filters
1.4K
Active filters are electronic circuits that use operational amplifiers (op-amps), resistors, and capacitors to filter out unwanted frequency components from a signal. A first-order low-pass active filter is designed to pass signals with a frequency lower than a certain cutoff frequency and attenuate frequencies higher than that cutoff frequency. The transfer function for a first-order low-pass active filter is:
1.4K
Application of Nonlinear Inequalities
359
A nonlinear inequality describes a comparison involving an expression that curves or behaves more complexly than a straight line. These inequalities often appear in forms that include squares, products, or variables in the denominator.To solve such an inequality, one starts by rewriting it so that zero appears on one side. For example, the inequality: can be factored as: This form makes it easier to identify the values that cause the expression to equal zero. In this case, the...
359
Area Between Curves: Problem Solving
224
A region can be enclosed by three curves: a square root function, a reflected cube root function, and a linear function. The linear function intersects each of the other two curves, and these intersection points determine where the boundary of the enclosed region changes. Because different curves serve as the upper and lower boundaries in different parts of the graph, the area cannot be found using a single setup over the entire interval.To compute the area, the region is first divided into two...
224
Improper Integrals: Discontinuous Integrands
194
Evaluating Areas Under Curves with DiscontinuitiesA definite integral is considered improper when the integrand is discontinuous at one of the limits of integration. This occurs when the function is undefined or becomes infinite at an endpoint, making the corresponding region under the curve unbounded. Such behavior is commonly associated with vertical asymptotes at the boundary of the interval. To properly define and evaluate these integrals, a limiting process is used to determine whether a...
194

