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- W2131853730 abstract "This paper reports on methods for automatic classification of spoken utterances based on the emotional state of the speaker. The data set used for the analysis comes from a corpus of human-machine dialogues recorded from a commercial application deployed by SpeechWorks. Linear discriminant classification with Gaussian class-conditional probability distribution and k-nearest neighbors methods are used to classify utterances into two basic emotion states, negative and non-negative The features used by the classifiers are utterance-level statistics of the fundamental frequency and energy of the speech signal. To improve classification performance, two specific feature selection methods are used; namely, promising first selection and forward feature selection. Principal component analysis is used to reduce the dimensionality of the features while maximizing classification accuracy. Improvements obtained by feature selection and PCA are reported. We also report the results." @default.
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- W2131853730 date "2005-08-24" @default.
- W2131853730 modified "2023-10-12" @default.
- W2131853730 title "Recognition of negative emotions from the speech signal" @default.
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- W2131853730 doi "https://doi.org/10.1109/asru.2001.1034632" @default.
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