TAILIEUCHUNG - Báo cáo khoa học: "Focus to Emphasize Tone Structures for Prosodic Analysis in Spoken Language Generation"

We analyze the concept of focus in speech and the relationship between focus and speech acts for prosodic generation. We determine how the speaker’s utterances are influenced by speaker’s intention. The relationship between speech acts and focus information is used to define which parts of the sentence serve as the focus parts. We propose the Focus to Emphasize Tones (FET) structure to analyze the focus components. We also design the FET grammar to analyze the intonation patterns and produce tone marks as a result of our analysis. We present a proof-of-the-concept working example to validate our proposal. More comprehensive. | Focus to Emphasize Tone Structures for Prosodic Analysis in Spoken Language Generation Lalita Narupiyakul Faculty of Computer Science Dalhousie University 6050 University Avenue Halifax Nova Scotia Canada B3H 1W5 Tel. 1-902-494-6441 Fax. 1-902-494-3962 lalita@ Abstract We analyze the concept of focus in speech and the relationship between focus and speech acts for prosodic generation. We determine how the speaker s utterances are influenced by speaker s intention. The relationship between speech acts and focus information is used to define which parts of the sentence serve as the focus parts. We propose the Focus to Emphasize Tones FET structure to analyze the focus components. We also design the FET grammar to analyze the intonation patterns and produce tone marks as a result of our analysis. We present a proof-of-the-concept working example to validate our proposal. More comprehensive evaluations are part of our current work. 1 Introduction A speaker s utterance may convey different meaning to a hearer. Such ambiguities can be resolved by emphasizing accents in different positions. Focus information is needed to select correct positions for accent information. To determine focus information a speaker s intentions must be revealed. We apply speech act theory to written sentences our input to determine a speaker s intention. Subsequently our system will produce a speaker utterance the result of analysis. Several research publications such as Steedman and Prevost 1994 and Klein 2000 explore prosodic analysis for spoken language generation SLG . Klein 2000 designs constraints for prosodic structures in the HPSG framework. His approach is based on an isomorphism of syntactic and prosodic trees. This approach is heavily syntax-driven and involves making prosodic trees by manipulation of the syntactic trees. This approach results in increased complexity since the type hierarchy of phrases must crossclassify prosodic phrases under syntactic phrases. .

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