arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2008.07247eess.AScs.LGcs.SD
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基于深度学习的开集声学场景分类

Deep Learning Based Open Set Acoustic Scene Classification

Samsung R\&D Institute Warsaw, Poland

Zuzanna Kwiatkowska, Beniamin Kalinowski, Michał Kośmider, Krzysztof Rykaczewski

摘要:

在这项工作中,我们比较了三个选定的技术在开集声学场景分类(ASC)的性能。我们测试了深度网络分类器的softmax输出的阈值,这是目前ASC中最流行的技术。并与计算机视觉领域的Openmax分类器进行了比较。作为第三种模型,我们使用自适应类条件自动编码器(Adapted C2AE),这是我们对另一种称为C2AE的计算机视觉相关技术的变体。改进的C2AE包含了给定实验的更公平的比较,简化了原始的推理过程,使其更适用于现实生活中的场景。我们还分析了两种训练场景:没有未知类的额外知识,另一种是来自未知类的有限样本子集。我们发现基于C2 AE的方法优于阈值和Openmax,获得了接收器操作特征曲线下的面积(AUROC)和用于声学场景和事件检测和分类的数据的开集准确度的$85.5\%$和$66\%$挑战2019年任务1C。

英文摘要:

In this work, we compare the performance of three selected techniques in open set acoustic scenes classification (ASC). We test thresholding of the softmax output of a deep network classifier, which is the most popular technique nowadays employed in ASC. Further we compare the results with the Openmax classifier which is derived from the computer vision field. As the third model, we use the Adapted Class-Conditioned Autoencoder (Adapted C2AE) which is our variation of another computer vision related technique called C2AE. Adapted C2AE encompasses a more fair comparison of the given experiments and simplifies the original inference procedure, making it more applicable in the real-life scenarios. We also analyse two training scenarios: without additional knowledge of unknown classes and another where a limited subset of examples from the unknown classes is available. We find that the C2AE based method outperforms the thresholding and Openmax, obtaining $85.5\%$ Area Under the Receiver Operating Characteristic curve (AUROC) and $66\%$ of open set accuracy on data used in Detection and Classification of Acoustic Scenes and Events Challenge 2019 Task 1C.

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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