HyST learns per-slot whether to use full-distribution or candidate-generation methods for dialogue state tracking and reports 24% relative gain over prior SOTA on MultiWOZ-2.0.
On the other hand the open-vocabulary approach is very flex- ible and shows better performance on large-vocabulary slots
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HyST: A Hybrid Approach for Flexible and Accurate Dialogue State Tracking
HyST learns per-slot whether to use full-distribution or candidate-generation methods for dialogue state tracking and reports 24% relative gain over prior SOTA on MultiWOZ-2.0.