Elena Lloret


2023

pdf bib
A Review of Research-Based Automatic Text Simplification Tools
Isabel Espinosa-Zaragoza | José Abreu-Salas | Elena Lloret | Paloma Moreda | Manuel Palomar
Proceedings of the 14th International Conference on Recent Advances in Natural Language Processing

In the age of knowledge, the democratisation of information facilitated through the Internet may not be as pervasive if written language poses challenges to particular sectors of the population. The objective of this paper is to present an overview of research-based automatic text simplification tools. Consequently, we describe aspects such as the language, language phenomena, language levels simplified, approaches, specific target populations these tools are created for (e.g. individuals with cognitive impairment, attention deficit, elderly people, children, language learners), and accessibility and availability considerations. The review of existing studies covering automatic text simplification tools is undergone by searching two databases: Web of Science and Scopus. The eligibility criteria involve text simplification tools with a scientific background in order to ascertain how they operate. This methodology yielded 27 text simplification tools that are further analysed. Some of the main conclusions reached with this review are the lack of resources accessible to the public, the need for customisation to foster the individual’s independence by allowing the user to select what s/he finds challenging to understand while not limiting the user’s capabilities and the need for more simplification tools in languages other than English, to mention a few.

pdf bib
Proceedings of the 1st International Workshop on Multilingual, Multimodal and Multitask Language Generation
Anabela Barreiro | Max Silberztein | Elena Lloret | Marcin Paprzycki
Proceedings of the 1st International Workshop on Multilingual, Multimodal and Multitask Language Generation

pdf bib
Towards an Efficient Approach for Controllable Text Generation
Iván Martínez-Murillo | Paloma Moreda | Elena Lloret
Proceedings of the 1st International Workshop on Multilingual, Multimodal and Multitask Language Generation

2022

pdf bib
Multi3Generation: Multitask, Multilingual, Multimodal Language Generation
Anabela Barreiro | José GC de Souza | Albert Gatt | Mehul Bhatt | Elena Lloret | Aykut Erdem | Dimitra Gkatzia | Helena Moniz | Irene Russo | Fabio Kepler | Iacer Calixto | Marcin Paprzycki | François Portet | Isabelle Augenstein | Mirela Alhasani
Proceedings of the 23rd Annual Conference of the European Association for Machine Translation

This paper presents the Multitask, Multilingual, Multimodal Language Generation COST Action – Multi3Generation (CA18231), an interdisciplinary network of research groups working on different aspects of language generation. This “meta-paper” will serve as reference for citations of the Action in future publications. It presents the objectives, challenges and a the links for the achieved outcomes.

2019

pdf bib
Towards Adaptive Text Summarization: How Does Compression Rate Affect Summary Readability of L2 Texts?
Tatiana Vodolazova | Elena Lloret
Proceedings of the International Conference on Recent Advances in Natural Language Processing (RANLP 2019)

This paper addresses the problem of readability of automatically generated summaries in the context of second language learning. For this we experimented with a new corpus of level-annotated simplified English texts. The texts were summarized using a total of 7 extractive and abstractive summarization systems with compression rates of 20%, 40%, 60% and 80%. We analyzed the generated summaries in terms of lexical, syntactic and length-based features of readability, and concluded that summary complexity depends on the compression rate, summarization technique and the nature of the summarized corpus. Our experiments demonstrate the importance of choosing appropriate summarization techniques that align with user’s needs and language proficiency.

pdf bib
The Impact of Rule-Based Text Generation on the Quality of Abstractive Summaries
Tatiana Vodolazova | Elena Lloret
Proceedings of the International Conference on Recent Advances in Natural Language Processing (RANLP 2019)

In this paper we describe how an abstractive text summarization method improved the informativeness of automatic summaries by integrating syntactic text simplification, subject-verb-object concept frequency scoring and a set of rules that transform text into its semantic representation. We analyzed the impact of each component of our approach on the quality of generated summaries and tested it on DUC 2002 dataset. Our experiments showed that our approach outperformed other state-of-the-art abstractive methods while maintaining acceptable linguistic quality and redundancy rate.

2017

pdf bib
Proceedings of the MultiLing 2017 Workshop on Summarization and Summary Evaluation Across Source Types and Genres
George Giannakopoulos | Elena Lloret | John M. Conroy | Josef Steinberger | Marina Litvak | Peter Rankel | Benoit Favre
Proceedings of the MultiLing 2017 Workshop on Summarization and Summary Evaluation Across Source Types and Genres

pdf bib
MultiLing 2017 Overview
George Giannakopoulos | John Conroy | Jeff Kubina | Peter A. Rankel | Elena Lloret | Josef Steinberger | Marina Litvak | Benoit Favre
Proceedings of the MultiLing 2017 Workshop on Summarization and Summary Evaluation Across Source Types and Genres

In this brief report we present an overview of the MultiLing 2017 effort and workshop, as implemented within EACL 2017. MultiLing is a community-driven initiative that pushes the state-of-the-art in Automatic Summarization by providing data sets and fostering further research and development of summarization systems. This year the scope of the workshop was widened, bringing together researchers that work on summarization across sources, languages and genres. We summarize the main tasks planned and implemented this year, the contributions received, and we also provide insights on next steps.

pdf bib
Ultra-Concise Multi-genre Summarisation of Web2.0: towards Intelligent Content Generation
Elena Lloret | Ester Boldrini | Patricio Martínez-Barco | Manuel Palomar
Proceedings of the MultiLing 2017 Workshop on Summarization and Summary Evaluation Across Source Types and Genres

The electronic Word of Mouth has become the most powerful communication channel thanks to the wide usage of the Social Media. Our research proposes an approach towards the production of automatic ultra-concise summaries from multiple Web 2.0 sources. We exploit user-generated content from reviews and microblogs in different domains, and compile and analyse four types of ultra-concise summaries: a)positive information, b) negative information; c) both or d) objective information. The appropriateness and usefulness of our model is demonstrated by its successful results and great potential in real-life applications, thus meaning a relevant advancement of the state-of-the-art approaches.

pdf bib
Improving the Naturalness and Expressivity of Language Generation for Spanish
Cristina Barros | Dimitra Gkatzia | Elena Lloret
Proceedings of the 10th International Conference on Natural Language Generation

We present a flexible Natural Language Generation approach for Spanish, focused on the surface realisation stage, which integrates an inflection module in order to improve the naturalness and expressivity of the generated language. This inflection module inflects the verbs using an ensemble of trainable algorithms whereas the other types of words (e.g. nouns, determiners, etc) are inflected using hand-crafted rules. We show that our approach achieves 2% higher accuracy than two state-of-art inflection generation approaches. Furthermore, our proposed approach also predicts an extra feature: the inflection of the imperative mood, which was not taken into account by previous work. We also present a user evaluation, where we demonstrate that the proposed method significantly improves the perceived naturalness of the generated language.

pdf bib
Inflection Generation for Spanish Verbs using Supervised Learning
Cristina Barros | Dimitra Gkatzia | Elena Lloret
Proceedings of the First Workshop on Subword and Character Level Models in NLP

We present a novel supervised approach to inflection generation for verbs in Spanish. Our system takes as input the verb’s lemma form and the desired features such as person, number, tense, and is able to predict the appropriate grammatical conjugation. Even though our approach learns from fewer examples comparing to previous work, it is able to deal with all the Spanish moods (indicative, subjunctive and imperative) in contrast to previous work which only focuses on indicative and subjunctive moods. We show that in an intrinsic evaluation, our system achieves 99% accuracy, outperforming (although not significantly) two competitive state-of-art systems. The successful results obtained clearly indicate that our approach could be integrated into wider approaches related to text generation in Spanish.

2016

pdf bib
Generating sets of related sentences from input seed features
Cristina Barros | Elena Lloret
Proceedings of the 2nd International Workshop on Natural Language Generation and the Semantic Web (WebNLG 2016)

pdf bib
Content Selection through Paraphrase Detection: Capturing different Semantic Realisations of the Same Idea
Elena Lloret | Claire Gardent
Proceedings of the 2nd International Workshop on Natural Language Generation and the Semantic Web (WebNLG 2016)

pdf bib
Analysing the Integration of Semantic Web Features for Document Planning across Genres
Marta Vicente | Elena Lloret
Proceedings of the 2nd International Workshop on Natural Language Generation and the Semantic Web (WebNLG 2016)

2015

pdf bib
The University of Alicante at MultiLing 2015: approach, results and further insights
Marta Vicente | Óscar Alcón | Elena Lloret
Proceedings of the 16th Annual Meeting of the Special Interest Group on Discourse and Dialogue

pdf bib
Input Seed Features for Guiding the Generation Process: A Statistical Approach for Spanish
Cristina Barros | Elena Lloret
Proceedings of the 15th European Workshop on Natural Language Generation (ENLG)

2011

pdf bib
Towards a Unified Approach for Opinion Question Answering and Summarization
Elena Lloret | Alexandra Balahur | Manuel Palomar | Andrés Montoyo
Proceedings of the 2nd Workshop on Computational Approaches to Subjectivity and Sentiment Analysis (WASSA 2.011)

pdf bib
Multi-Document Summarization by Capturing the Information Users are Interested in
Elena Lloret | Laura Plaza | Ahmet Aker
Proceedings of the International Conference Recent Advances in Natural Language Processing 2011

pdf bib
Finding the Best Approach for Multi-lingual Text Summarisation: A Comparative Analysis
Elena Lloret | Manuel Palomar
Proceedings of the International Conference Recent Advances in Natural Language Processing 2011

2010

pdf bib
Quantifying the Limits and Success of Extractive Summarization Systems Across Domains
Hakan Ceylan | Rada Mihalcea | Umut Özertem | Elena Lloret | Manuel Palomar
Human Language Technologies: The 2010 Annual Conference of the North American Chapter of the Association for Computational Linguistics

pdf bib
Experiments on Summary-based Opinion Classification
Elena Lloret | Horacio Saggion | Manuel Palomar
Proceedings of the NAACL HLT 2010 Workshop on Computational Approaches to Analysis and Generation of Emotion in Text

2009

pdf bib
Summarizing Threads in Blogs Using Opinion Polarity
Alexandra Balahur | Elena Lloret | Ester Boldrini | Andrés Montoyo | Manuel Palomar | Patricio Martínez-Barco
Proceedings of the Workshop on Events in Emerging Text Types

pdf bib
Towards Building a Competitive Opinion Summarization System: Challenges and Keys
Elena Lloret | Alexandra Balahur | Manuel Palomar | Andrés Montoyo
Proceedings of Human Language Technologies: The 2009 Annual Conference of the North American Chapter of the Association for Computational Linguistics, Companion Volume: Student Research Workshop and Doctoral Consortium