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        <title>Time Masking: Leveraging Temporal Information in Spoken Dialogue Systems</title>
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            <title>Proceedings of the 20th Annual SIGdial Meeting on Discourse and Dialogue</title>
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        <name type="personal">
            <namePart type="given">Satoshi</namePart>
            <namePart type="family">Nakamura</namePart>
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            <namePart type="given">Milica</namePart>
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    <abstract>In a spoken dialogue system, dialogue state tracker (DST) components track the state of the conversation by updating a distribution of values associated with each of the slots being tracked for the current user turn, using the interactions until then. Much of the previous work has relied on modeling the natural order of the conversation, using distance based offsets as an approximation of time. In this work, we hypothesize that leveraging the wall-clock temporal difference between turns is crucial for finer-grained control of dialogue scenarios. We develop a novel approach that applies a time mask, based on the wall-clock time difference, to the associated slot embeddings and empirically demonstrate that our proposed approach outperforms existing approaches that leverage distance offsets, on both an internal benchmark dataset as well as DSTC2.</abstract>
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%0 Conference Proceedings
%T Time Masking: Leveraging Temporal Information in Spoken Dialogue Systems
%A Conway, Rylan
%A Lambert, Mathias
%Y Nakamura, Satoshi
%Y Gasic, Milica
%Y Zukerman, Ingrid
%Y Skantze, Gabriel
%Y Nakano, Mikio
%Y Papangelis, Alexandros
%Y Ultes, Stefan
%Y Yoshino, Koichiro
%S Proceedings of the 20th Annual SIGdial Meeting on Discourse and Dialogue
%D 2019
%8 September
%I Association for Computational Linguistics
%C Stockholm, Sweden
%F conway-lambert-2019-time
%X In a spoken dialogue system, dialogue state tracker (DST) components track the state of the conversation by updating a distribution of values associated with each of the slots being tracked for the current user turn, using the interactions until then. Much of the previous work has relied on modeling the natural order of the conversation, using distance based offsets as an approximation of time. In this work, we hypothesize that leveraging the wall-clock temporal difference between turns is crucial for finer-grained control of dialogue scenarios. We develop a novel approach that applies a time mask, based on the wall-clock time difference, to the associated slot embeddings and empirically demonstrate that our proposed approach outperforms existing approaches that leverage distance offsets, on both an internal benchmark dataset as well as DSTC2.
%R 10.18653/v1/W19-5907
%U https://aclanthology.org/W19-5907
%U https://doi.org/10.18653/v1/W19-5907
%P 56-61

Markdown (Informal)

[Time Masking: Leveraging Temporal Information in Spoken Dialogue Systems](https://aclanthology.org/W19-5907) (Conway & Lambert, SIGDIAL 2019)

• Time Masking: Leveraging Temporal Information in Spoken Dialogue Systems (Conway & Lambert, SIGDIAL 2019)

ACL

• Rylan Conway and Mathias Lambert. 2019. Time Masking: Leveraging Temporal Information in Spoken Dialogue Systems. In Proceedings of the 20th Annual SIGdial Meeting on Discourse and Dialogue, pages 56–61, Stockholm, Sweden. Association for Computational Linguistics.