Search Results for author: Luisa Coheur

Found 16 papers, 6 papers with code

xCOMET: Transparent Machine Translation Evaluation through Fine-grained Error Detection

1 code implementation16 Oct 2023 Nuno M. Guerreiro, Ricardo Rei, Daan van Stigt, Luisa Coheur, Pierre Colombo, André F. T. Martins

Widely used learned metrics for machine translation evaluation, such as COMET and BLEURT, estimate the quality of a translation hypothesis by providing a single sentence-level score.

Machine Translation Sentence +1

Scaling up COMETKIWI: Unbabel-IST 2023 Submission for the Quality Estimation Shared Task

1 code implementation21 Sep 2023 Ricardo Rei, Nuno M. Guerreiro, José Pombal, Daan van Stigt, Marcos Treviso, Luisa Coheur, José G. C. de Souza, André F. T. Martins

Our team participated on all tasks: sentence- and word-level quality prediction (task 1) and fine-grained error span detection (task 2).

Sentence Task 2

Fuzzy Fingerprinting Transformer Language-Models for Emotion Recognition in Conversations

no code implementations8 Sep 2023 Patrícia Pereira, Rui Ribeiro, Helena Moniz, Luisa Coheur, Joao Paulo Carvalho

Fuzzy Fingerprints have been successfully used as an interpretable text classification technique, but, like most other techniques, have been largely surpassed in performance by Large Pre-trained Language Models, such as BERT or RoBERTa.

Emotion Recognition text-classification +1

Enhancing Portuguese Sign Language Animation with Dynamic Timing and Mouthing

no code implementations12 Jul 2023 Inês Lacerda, Hugo Nicolau, Luisa Coheur

Current signing avatars are often described as unnatural as they cannot accurately reproduce all the subtleties of synchronized body behaviors of a human signer.

The Inside Story: Towards Better Understanding of Machine Translation Neural Evaluation Metrics

1 code implementation19 May 2023 Ricardo Rei, Nuno M. Guerreiro, Marcos Treviso, Luisa Coheur, Alon Lavie, André F. T. Martins

Neural metrics for machine translation evaluation, such as COMET, exhibit significant improvements in their correlation with human judgments, as compared to traditional metrics based on lexical overlap, such as BLEU.

Decision Making Machine Translation +2

Using Implicit Feedback to Improve Question Generation

no code implementations26 Apr 2023 Hugo Rodrigues, Eric Nyberg, Luisa Coheur

Each generated question, after being corrected by the user, is used as a new seed in the next iteration, so more patterns are created each time.

Question Generation Question-Generation +1

Towards a Sentiment-Aware Conversational Agent

no code implementations24 Jul 2022 Isabel Dias, Ricardo Rei, Patrícia Pereira, Luisa Coheur

In this paper, we propose an end-to-end sentiment-aware conversational agent based on two models: a reply sentiment prediction model, which leverages the context of the dialogue to predict an appropriate sentiment for the agent to express in its reply; and a text generation model, which is conditioned on the predicted sentiment and the context of the dialogue, to produce a reply that is both context and sentiment appropriate.

Sentiment Analysis Sentiment Classification +1

Onception: Active Learning with Expert Advice for Real World Machine Translation

1 code implementation9 Mar 2022 Vânia Mendonça, Ricardo Rei, Luisa Coheur, Alberto Sardinha

Moreover, since we not know in advance which query strategy will be the most adequate for a certain language pair and set of Machine Translation models, we propose to dynamically combine multiple strategies using prediction with expert advice.

Active Learning Machine Translation +1

MT-Telescope: An interactive platform for contrastive evaluation of MT systems

no code implementations ACL 2021 Ricardo Rei, Ana C Farinha, Craig Stewart, Luisa Coheur, Alon Lavie

We present MT-Telescope, a visualization platform designed to facilitate comparative analysis of the output quality of two Machine Translation (MT) systems.

Machine Translation Translation

Graph-Community Detection for Cross-Document Topic Segment Relationship Identification

no code implementations13 Jun 2016 Pedro Mota, Maxine Eskenazi, Luisa Coheur

In this context, we study how different weighting mechanisms influence the discovery of word communities that relate to the different topics found in the documents.

Clustering Community Detection

Controlling Complexity in Part-of-Speech Induction

no code implementations16 Jan 2014 João V. Graça, Kuzman Ganchev, Luisa Coheur, Fernando Pereira, Ben Taskar

We consider the problem of fully unsupervised learning of grammatical (part-of-speech) categories from unlabeled text.

Inductive Bias

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