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- W60398317 abstract "This paper deals with automatic dialog acts (DAs) recognition in Czech. The dialog acts are sentence-level labels that represent different states of a dialogue, depending on the application. Our work focuses on two applications: a multimodal reservation system and an animated talking head for hearing-impaired people. In that context, we consider the following DAs: statements, orders, yes/no questions and other questions. We propose to use both lexical and prosodic information for DAs recognition. The main goal of this paper is to compare different methods to combine the results of both classifiers. On a Czech corpus simulating a reservation of train tickets, the lexical information only gives about 92 % of classification accuracy, while prosody gives only about 45 % of accuracy. When both classifiers are combined with a multilayer perceptron, the lowest (lexical) word error rate further decreases by 26 %. We show that this improvement is close to the optimal one, given the correlation of the lexical and prosodic features. The other combination schemes do not outperform the lexical-only results." @default.
- W60398317 created "2016-06-24" @default.
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- W60398317 date "2005-09-04" @default.
- W60398317 modified "2023-09-25" @default.
- W60398317 title "Combination of classifiers for automatic recognition of dialog acts" @default.
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- W60398317 doi "https://doi.org/10.21437/interspeech.2005-384" @default.
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