光谱图
模式识别(心理学)
人工智能
计算机科学
特征选择
特征提取
语音识别
假阳性悖论
数学
作者
Luís Mendes,Ioannis Vogiatzis,Eleni Perantoni,Evangelos Kaimakamis,Ioanna Chouvarda,Nicos Maglaveras,Venetia Tsara,César Teixeira,Paulo Carvalho,J. Henriques,Rui Pedro Paiva
标识
DOI:10.1109/embc.2015.7319657
摘要
In this work thirty features were tested in order to identify the best feature set for the robust detection of wheezes. The features include the detection of the wheezes signature in the spectrogram space (WS-SS) and twenty-nine musical features usually used in the context of Music Information Retrieval. The method proposed to detect the signature of wheezes imposes a temporal Gaussian regularization and a reduction of the false positives based on the (geodesic) morphological opening by reconstruction operator. Our dataset contains wheezes, crackles and normal breath sounds. Four selection algorithms were used to rank the features. The performance of the features was asserted having into account the Matthews correlation coefficient (MCC). All the selection algorithms ranked the WS-SS feature as the most important. A significant boost in performance was obtained by using around ten features. This improvement was independent of the selection algorithm. The use of more than ten features only allows for a small increase of the MCC value.
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