Follow-on Question Suggestion via Voice Hints for Voice Assistants

no code implementations • 25 Oct 2023 • Besnik Fetahu, Pedro Faustini, Giuseppe Castellucci, Anjie Fang, Oleg Rokhlenko, Shervin Malmasi

Using a new dataset of 6681 input questions and human written hints, we evaluated the models with automatic metrics and human evaluation.

Answering Unanswered Questions through Semantic Reformulations in Spoken QA

no code implementations • 27 May 2023 • Pedro Faustini, Zhiyu Chen, Besnik Fetahu, Oleg Rokhlenko, Shervin Malmasi

Spoken Question Answering (QA) is a key feature of voice assistants, usually backed by multiple QA systems.

Question Answering Specificity

Directional Privacy for Deep Learning

no code implementations • 9 Nov 2022 • Pedro Faustini, Natasha Fernandes, Shakila Tonni, Annabelle McIver, Mark Dras

In this paper, we apply \textit{directional privacy}, via a mechanism based on the von Mises-Fisher (VMF) distribution, to perturb gradients in terms of \textit{angular distance} so that gradient direction is broadly preserved.