Search Results for author: Angeliki Metallinou

Found 15 papers, 2 papers with code

Multi-User MultiWOZ: Task-Oriented Dialogues among Multiple Users

no code implementations31 Oct 2023 Yohan Jo, Xinyan Zhao, Arijit Biswas, Nikoletta Basiou, Vincent Auvray, Nikolaos Malandrakis, Angeliki Metallinou, Alexandros Potamianos

While most task-oriented dialogues assume conversations between the agent and one user at a time, dialogue systems are increasingly expected to communicate with multiple users simultaneously who make decisions collaboratively.

Decision Making Dialogue State Tracking

Dialog Simulation with Realistic Variations for Training Goal-Oriented Conversational Systems

no code implementations16 Nov 2020 Chien-Wei Lin, Vincent Auvray, Daniel Elkind, Arijit Biswas, Maryam Fazel-Zarandi, Nehal Belgamwar, Shubhra Chandra, Matt Zhao, Angeliki Metallinou, Tagyoung Chung, Charlie Shucheng Zhu, Suranjit Adhikari, Dilek Hakkani-Tur

Our approach includes a novel goal-sampling technique for sampling plausible user goals and a dialog simulation technique that uses heuristic interplay between the user and the system (Alexa), where the user tries to achieve the sampled goal.

Goal-Oriented Dialog Natural Language Understanding

Simple Question Answering with Subgraph Ranking and Joint-Scoring

no code implementations NAACL 2019 Wenbo Zhao, Tagyoung Chung, Anuj Goyal, Angeliki Metallinou

Using this framework as a starting point, we focus on two aspects: improving subgraph selection through a novel ranking method and leveraging the subject--relation dependency by proposing a joint scoring CNN model with a novel loss function that enforces the well-order of scores.

Fact Selection Question Answering

Unsupervised Transfer Learning for Spoken Language Understanding in Intelligent Agents

1 code implementation13 Nov 2018 Aditya Siddhant, Anuj Goyal, Angeliki Metallinou

Our findings suggest unsupervised pre-training on a large corpora of unlabeled utterances leads to significantly better SLU performance compared to training from scratch and it can even outperform conventional supervised transfer.

Language Modelling Spoken Language Understanding +2

Online Embedding Compression for Text Classification using Low Rank Matrix Factorization

no code implementations1 Nov 2018 Anish Acharya, Rahul Goel, Angeliki Metallinou, Inderjit Dhillon

Empirically, we show that the proposed method can achieve 90% compression with minimal impact in accuracy for sentence classification tasks, and outperforms alternative methods like fixed-point quantization or offline word embedding compression.

General Classification Quantization +2

On Evaluating and Comparing Open Domain Dialog Systems

no code implementations11 Jan 2018 Anu Venkatesh, Chandra Khatri, Ashwin Ram, Fenfei Guo, Raefer Gabriel, Ashish Nagar, Rohit Prasad, Ming Cheng, Behnam Hedayatnia, Angeliki Metallinou, Rahul Goel, Shaohua Yang, Anirudh Raju

In this paper, we propose a comprehensive evaluation strategy with multiple metrics designed to reduce subjectivity by selecting metrics which correlate well with human judgement.

Goal-Oriented Dialogue Systems Open-Domain Dialog

Topic-based Evaluation for Conversational Bots

1 code implementation11 Jan 2018 Fenfei Guo, Angeliki Metallinou, Chandra Khatri, Anirudh Raju, Anu Venkatesh, Ashwin Ram

Dialog evaluation is a challenging problem, especially for non task-oriented dialogs where conversational success is not well-defined.

Topic Classification

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