34 research outputs found
Grounding Description-Driven Dialogue State Trackers with Knowledge-Seeking Turns
Schema-guided dialogue state trackers can generalise to new domains without
further training, yet they are sensitive to the writing style of the schemata.
Augmenting the training set with human or synthetic schema paraphrases improves
the model robustness to these variations but can be either costly or difficult
to control. We propose to circumvent these issues by grounding the state
tracking model in knowledge-seeking turns collected from the dialogue corpus as
well as the schema. Including these turns in prompts during finetuning and
inference leads to marked improvements in model robustness, as demonstrated by
large average joint goal accuracy and schema sensitivity improvements on SGD
and SGD-X.Comment: Best Long Paper of SIGDIAL 202
5IDER: Unified Query Rewriting for Steering, Intent Carryover, Disfluencies, Entity Carryover and Repair
Providing voice assistants the ability to navigate multi-turn conversations
is a challenging problem. Handling multi-turn interactions requires the system
to understand various conversational use-cases, such as steering, intent
carryover, disfluencies, entity carryover, and repair. The complexity of this
problem is compounded by the fact that these use-cases mix with each other,
often appearing simultaneously in natural language. This work proposes a
non-autoregressive query rewriting architecture that can handle not only the
five aforementioned tasks, but also complex compositions of these use-cases. We
show that our proposed model has competitive single task performance compared
to the baseline approach, and even outperforms a fine-tuned T5 model in
use-case compositions, despite being 15 times smaller in parameters and 25
times faster in latency.Comment: Interspeech 202
Battery Management System for 24-V Battery-Powered Electric Wheelchair
This paper describes a simplified battery-management system using a digital signal processor for a 24-V battery-powered electric wheelchair to modulate and protect the battery from operating outside its safe operating area, such as over-temperature, under-temperature, over-voltage, under-voltage, over-current discharge, or over-current charging. Using the buck-boost circuit topology, we achieved and demonstrated both battery balance and protection in a prototype 12-V/40-Ah series-connected two-battery module. Simulation results show that the proposed battery management system is feasible for a 24-V battery-powered electric wheelchair application