在水下声学环境中用于海上监视的新奇性检测,使用用于神经网络的分布外探测器
Nayeon Kim1, Minho Kim2, Chanil Lee2
1Department of AI Convergence, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea.
Sensors (Basel, Switzerland)
|January 10, 2026
概括
这项研究引入了一种用于检测水下声学中未知的信号的新方法. 通过结合ODIN和蒙特卡洛脱落,它提高了传感系统的可靠性和稳定性.
科学领域:
- 声学 声学 在声学方面
- 机器学习 机器学习
- 信号处理 信号处理
背景情况:
- 水下声学传感系统需要对海上安全和自主导航的未知信号进行强有力的检测.
- 传统的深度学习模型在过度自信和缺乏对未知信号的不确定性量化方面扎.
- 现有的方法无法在动态的水下环境中提供可靠的新奇检测.
研究的目的:
- 开发一个新奇的检测框架,提高水下声学传感系统的可靠性和稳定性.
- 解决传统深度学习模型在处理未知信号方面的局限性.
- 改进信号检测中的预测不确定性的量化.
主要方法:
- 将神经网络 (ODIN) 的分布外探测器与蒙特卡洛 (MC) 断路器集成.
- 奥丁校准软max概率,以减少过度自信和提高信号分离性.
- MC 抛弃引入了用于估计预测不确定性的随机性,并使用高斯混合模型和库尔巴克-莱布勒分歧来量化偏差来建模输出.
主要成果:
- 拟议的方法表明,与MC退出基线相比,接收器操作特征曲线下的面积平均增加了9.5%.
- 与ODIN基线相比,观察到接收器操作特征曲线下的面积增加了5.39%.
- 实现了虚假阳性率的显著降低,与MC退学率和ODIN基线相比,分别有7.82%和2.63%的改善.
结论:
- 随机推断与ODIN的整合显著提高了在水下声环境中新奇检测的稳定性和可靠性.
- 拟议的框架有效地减轻了模型过度信心,并量化了预测不确定性,这对于现实世界的应用至关重要.
- 这种方法为海上安全和自主导航的强大信号检测提供了有希望的解决方案.
相关概念视频
Difference from Background: Limit of Detection
8.0K
The limit of detection (LOD) is the smallest amount of analyte that can be distinguished from the background noise. The LOD value corresponds to the concentration at which the analyte signal is three times larger than the standard deviation of the blank signal. Below this value, the analyte signal cannot be differentiated from the background noise. It is calculated by dividing the calibration slope by 3 times the standard deviation of the blank signals.
The LOD indicates the presence or absence...
The LOD indicates the presence or absence...
8.0K
Classification of Signals
1.3K
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...
1.3K


