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We present three enhancements to existing encoder-decoder models for open-domain conversational agents, aimed at effectively modeling coherence and promoting output diversity: (1) We introduce a measure of coherence as the GloVe embedding…

Computation and Language · Computer Science 2018-11-22 Xinnuo Xu , Ondřej Dušek , Ioannis Konstas , Verena Rieser

Evaluating open-domain dialogue systems is difficult due to the diversity of possible correct answers. Automatic metrics such as BLEU correlate weakly with human annotations, resulting in a significant bias across different models and…

Computation and Language · Computer Science 2020-04-02 Nouha Dziri , Ehsan Kamalloo , Kory W. Mathewson , Osmar Zaiane

Privacy personas capture the differences in user segments with respect to one's knowledge, behavioural patterns, level of self-efficacy, and perception of the importance of privacy protection. Modelling these differences is essential for…

Machine Learning · Computer Science 2025-02-20 Olena Hrynenko , Andrea Cavallaro

Maintaining engagement and consistency is particularly important in dialogue systems. Existing works have improved the performance of dialogue systems by intentionally learning interlocutor personas with sophisticated network structures.…

Computation and Language · Computer Science 2023-02-28 Ruijun Chen , Jin Wang , Liang-Chih Yu , Xuejie Zhang

Large Language Models (LLMs) are increasingly used in everyday life and research. One of the most common use cases is conversational interactions, enabled by the language generation capabilities of LLMs. Just as between two humans, a…

Computation and Language · Computer Science 2024-11-12 Jingyao Zheng , Xian Wang , Simo Hosio , Xiaoxian Xu , Lik-Hang Lee

AI-generated counterspeech offers a promising and scalable strategy to curb online toxicity through direct replies that promote civil discourse. However, current counterspeech is one-size-fits-all, lacking adaptation to the moderation…

Human-Computer Interaction · Computer Science 2025-02-10 Lorenzo Cima , Alessio Miaschi , Amaury Trujillo , Marco Avvenuti , Felice Dell'Orletta , Stefano Cresci

Speech-Driven Facial Animation (SDFA) has gained significant attention due to its applications in movies, video games, and virtual reality. However, most existing models are trained on single-language data, limiting their effectiveness in…

Computer Vision and Pattern Recognition · Computer Science 2026-04-20 Federico Nocentini , Kwanggyoon Seo , Qingju Liu , Claudio Ferrari , Stefano Berretti , David Ferman , Hyeongwoo Kim , Pablo Garrido , Akin Caliskan

Response diversity has become an important criterion for evaluating the quality of open-domain dialogue generation models. However, current evaluation metrics for response diversity often fail to capture the semantic diversity of generated…

Computation and Language · Computer Science 2022-10-25 Seungju Han , Beomsu Kim , Buru Chang

Voice enhancement and voice coding are imperative and important functions in a voice-communication system. However, both functions are commonly treated independently, even though both utilize similar features of the underlying signals. Our…

Audio and Speech Processing · Electrical Eng. & Systems 2019-11-14 Phani Kumar Nyshadham , D R Shivakumar , Peter Kroon , Shmulik Markovich-Golan

Conversational AI systems combine AI-based solutions with the flexibility of conversational interfaces. However, most existing testing solutions do not straightforwardly adapt to the characteristics of conversational interaction or to the…

Software Engineering · Computer Science 2026-02-04 Elena Masserini

An automated metric to evaluate dialogue quality is vital for optimizing data driven dialogue management. The common approach of relying on explicit user feedback during a conversation is intrusive and sparse. Current models to estimate…

Machine Learning · Computer Science 2019-11-21 Praveen Kumar Bodigutla , Lazaros Polymenakos , Spyros Matsoukas

There are growing concerns about the risks posed by AI companion applications designed for emotional engagement. Existing safety evaluations often rely on self-reported user data or interviews, offering limited insights into real-time…

Computation and Language · Computer Science 2026-05-04 Prerna Juneja , Lika Lomidze

Single-channel speech separation in time domain and frequency domain has been widely studied for voice-driven applications over the past few years. Most of previous works assume known number of speakers in advance, however, which is not…

Audio and Speech Processing · Electrical Eng. & Systems 2020-04-02 Yiming Xiao , Haijian Zhang

A good conversation requires balance -- between simplicity and detail; staying on topic and changing it; asking questions and answering them. Although dialogue agents are commonly evaluated via human judgments of overall quality, the…

Computation and Language · Computer Science 2019-04-11 Abigail See , Stephen Roller , Douwe Kiela , Jason Weston

Recent advancements in Large Language Models empower them to follow freeform instructions, including imitating generic or specific demographic personas in conversations. We define generic personas to represent demographic groups, such as…

Computation and Language · Computer Science 2023-11-06 Yixin Wan , Jieyu Zhao , Aman Chadha , Nanyun Peng , Kai-Wei Chang

Recently, large language models have facilitated the emergence of highly intelligent conversational AI capable of engaging in human-like dialogues. However, a notable distinction lies in the fact that these AI models predominantly generate…

Human-Computer Interaction · Computer Science 2025-10-13 Jijie Zhou , Yuhan Hu

Isolating the desired speaker's voice amidst multiplespeakers in a noisy acoustic context is a challenging task. Per-sonalized speech enhancement (PSE) endeavours to achievethis by leveraging prior knowledge of the speaker's voice.Recent…

Sound · Computer Science 2024-04-15 Thomas Serre , Mathieu Fontaine , Éric Benhaim , Geoffroy Dutour , Slim Essid

People can view the same image differently: they focus on different regions, objects, and details in varying orders and describe them in distinct linguistic styles. This leads to substantial variability in image descriptions. However,…

Computer Vision and Pattern Recognition · Computer Science 2025-12-09 Ruoyu Xue , Hieu Le , Jingyi Xu , Sounak Mondal , Abe Leite , Gregory Zelinsky , Minh Hoai , Dimitris Samaras

Conversational recommender system is an emerging area that has garnered an increasing interest in the community, especially with the advancements in large language models (LLMs) that enable diverse reasoning over conversational input.…

Computation and Language · Computer Science 2024-06-11 Minjin Kim , Minju Kim , Hana Kim , Beong-woo Kwak , Soyeon Chun , Hyunseo Kim , SeongKu Kang , Youngjae Yu , Jinyoung Yeo , Dongha Lee

Conversational AI systems are becoming famous in day to day lives. In this paper, we are trying to address the following key question: To identify whether design, as well as development efforts for search oriented conversational AI are…

Artificial Intelligence · Computer Science 2017-09-15 Mahipal Jadeja , Neelanshi Varia
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