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arXiv 2211.07445eess.AScs.SDq-bio.QM
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探讨噪声和退化对心音分类模型的影响

Exploring the Impact of Noise and Degradations on Heart Sound Classification Models

Technological University Dublin(都柏林理工大学);University College Dublin(都柏林大学学院)

Davoud Shariat Panah, Andrew Hines, Susan McKeever

摘要:

近年来,数据驱动的心音分类模型的发展一直是一个活跃的研究领域。为了首先开发这种数据驱动的模型,需要使用信号采集设备捕获心音信号。然而,在大多数情况下,由于内部和外部噪声的存在,几乎不可能捕获无噪声的心音信号。心音信号中的这种噪声和退化可能会降低数据驱动分类模型的准确性。尽管在文献中已经提出了不同的技术来解决噪声问题,但是心音信号中的不同噪声和退化如何以及在多大程度上影响数据驱动分类模型的准确性仍然未被探索。为了回答这个问题,我们制作了一个合成心音数据集,包括被各种噪声和退化污染的正常和异常心音。我们使用这个数据集来研究心音记录中的噪声和退化对不同分类模型性能的影响。结果表明,不同的噪声和退化对心音分类模型的性能有不同程度的影响,有些噪声和退化对分类模型的影响较大,有些噪声和退化对分类模型的影响较小。将这项研究的结果与我们之前对一组临床医生进行的调查结果进行比较,发现对分类模型更有害的噪声和退化对准确的听诊也更具破坏性。这项研究的结果可以用来开发有针对性的心音质量增强方法-根据心音信号中的噪声和退化特性来适应质量增强的类型和积极性。

英文摘要:

The development of data-driven heart sound classification models has been an active area of research in recent years. To develop such data-driven models in the first place, heart sound signals need to be captured using a signal acquisition device. However, it is almost impossible to capture noise-free heart sound signals due to the presence of internal and external noises in most situations. Such noises and degradations in heart sound signals can potentially reduce the accuracy of data-driven classification models. Although different techniques have been proposed in the literature to address the noise issue, how and to what extent different noise and degradations in heart sound signals impact the accuracy of data-driven classification models remains unexplored. To answer this question, we produced a synthetic heart sound dataset including normal and abnormal heart sounds contaminated with a large variety of noise and degradations. We used this dataset to investigate the impact of noise and degradation in heart sound recordings on the performance of different classification models. The results show different noises and degradations affect the performance of heart sound classification models to a different extent; some are more problematic for classification models, and others are less destructive. Comparing the findings of this study with the results of a survey we previously carried out with a group of clinicians shows noise and degradations that are more detrimental to classification models are also more disruptive to accurate auscultation. The findings of this study can be leveraged to develop targeted heart sound quality enhancement approaches - which adapt the type and aggressiveness of quality enhancement based on the characteristics of noise and degradation in heart sound signals.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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