1 code implementation • COLING (CRAC) 2022 • Petter Mæhlum, Dag Haug, Tollef Jørgensen, Andre Kåsen, Anders Nøklestad, Egil Rønningstad, Per Erik Solberg, Erik Velldal, Lilja Øvrelid
We present the Norwegian Anaphora Resolution Corpus (NARC), the first publicly available corpus annotated with anaphoric relations between noun phrases for Norwegian.
no code implementations • EMNLP (ClinicalNLP) 2020 • Ildiko Pilan, Pål H. Brekke, Fredrik A. Dahl, Tore Gundersen, Haldor Husby, Øystein Nytrø, Lilja Øvrelid
Loss of consciousness, so-called syncope, is a commonly occurring symptom associated with worse prognosis for a number of heart-related diseases.
1 code implementation • NAACL (GeBNLP) 2022 • Samia Touileb, Lilja Øvrelid, Erik Velldal
In this paper we explore how a demographic distribution of occupations, along gender dimensions, is reflected in pre-trained language models.
no code implementations • ACL (GeBNLP) 2021 • Samia Touileb, Lilja Øvrelid, Erik Velldal
More specifically, we add information about the gender of critics and book authors when classifying the polarity of book reviews, and the polarity of the reviews when classifying the genders of authors and critics.
1 code implementation • NoDaLiDa 2021 • Petter Mæhlum, Jeremy Barnes, Robin Kurtz, Lilja Øvrelid, Erik Velldal
This paper introduces NorecNeg – the first annotated dataset of negation for Norwegian.
no code implementations • SemEval (NAACL) 2022 • Jeremy Barnes, Laura Oberlaender, Enrica Troiano, Andrey Kutuzov, Jan Buchmann, Rodrigo Agerri, Lilja Øvrelid, Erik Velldal
In this paper, we introduce the first SemEval shared task on Structured Sentiment Analysis, for which participants are required to predict all sentiment graphs in a text, where a single sentiment graph is composed of a sentiment holder, target, expression and polarity.
2 code implementations • WS (NoDaLiDa) 2019 • Jeremy Barnes, Samia Touileb, Lilja Øvrelid, Erik Velldal
This paper explores the use of multi-task learning (MTL) for incorporating external knowledge in neural models.
1 code implementation • WS (NoDaLiDa) 2019 • Petter Mæhlum, Jeremy Barnes, Lilja Øvrelid, Erik Velldal
This paper documents the creation of a large-scale dataset of evaluative sentences – i. e. both subjective and objective sentences that are found to be sentiment-bearing – based on mixed-domain professional reviews from various news-sources.
1 code implementation • GeBNLP (COLING) 2020 • Samia Touileb, Lilja Øvrelid, Erik Velldal
We also explore the differences in how this is done by male and female critics.
no code implementations • NoDaLiDa 2021 • Vinit Ravishankar, Andrey Kutuzov, Lilja Øvrelid, Erik Velldal
Multilingual pretrained language models are rapidly gaining popularity in NLP systems for non-English languages.
no code implementations • 22 Oct 2023 • Anthi Papadopoulou, Pierre Lison, Mark Anderson, Lilja Øvrelid, Ildikó Pilán
The text sanitization process starts with a privacy-oriented entity recognizer that seeks to determine the text spans expressing identifiable personal information.
no code implementations • 28 Jun 2023 • Mohammad Ali Hussiny, Lilja Øvrelid
This paper introduces the first emotion annotated dataset for the Dari variant of Persian spoken in Afghanistan.
1 code implementation • 26 Jun 2023 • Huiling You, Samia Touileb, Lilja Øvrelid
We propose a graph-based event extraction framework JSEEGraph that approaches the task of event extraction as general graph parsing in the tradition of Meaning Representation Parsing.
1 code implementation • 13 Jun 2023 • David Samuel, Lilja Øvrelid
In recent years, language models have become increasingly larger and more complex.
no code implementations • 5 Jun 2023 • Sondre Wold, Lilja Øvrelid, Erik Velldal
In contrast to large text corpora, knowledge graphs (KG) provide dense and structured representations of factual information.
1 code implementation • 6 May 2023 • David Samuel, Andrey Kutuzov, Samia Touileb, Erik Velldal, Lilja Øvrelid, Egil Rønningstad, Elina Sigdel, Anna Palatkina
We present NorBench: a streamlined suite of NLP tasks and probes for evaluating Norwegian language models (LMs) on standardized data splits and evaluation metrics.
1 code implementation • 3 May 2023 • Sardana Ivanova, Fredrik Aas Andreassen, Matias Jentoft, Sondre Wold, Lilja Øvrelid
In this paper we present NorQuAD: the first Norwegian question answering dataset for machine reading comprehension.
1 code implementation • COLING 2022 • Egil Rønningstad, Erik Velldal, Lilja Øvrelid
We show that sentiment in our dataset is expressed not only with an entity mention as target, but also towards targets with a sentiment-relevant relation to a volitional entity.
no code implementations • 12 Apr 2023 • Samia Touileb, Lilja Øvrelid, Erik Velldal
We investigate in this paper how distributions of occupations with respect to gender is reflected in pre-trained language models.
2 code implementations • 17 Mar 2023 • David Samuel, Andrey Kutuzov, Lilja Øvrelid, Erik Velldal
While modern masked language models (LMs) are trained on ever larger corpora, we here explore the effects of down-scaling training to a modestly-sized but representative, well-balanced, and publicly available English text source -- the British National Corpus.
1 code implementation • 18 Oct 2022 • Huiling You, David Samuel, Samia Touileb, Lilja Øvrelid
This paper presents our submission to the 2022 edition of the CASE 2021 shared task 1, subtask 4.
1 code implementation • 16 Oct 2022 • Huiling You, David Samuel, Samia Touileb, Lilja Øvrelid
Event extraction therefore becomes a graph parsing problem, which provides the following advantages: 1) performing event detection and argument extraction jointly; 2) detecting and extracting multiple events from a piece of text; and 3) capturing the complicated interaction between event arguments and triggers.
1 code implementation • 31 Aug 2022 • Andrey Kutuzov, Erik Velldal, Lilja Øvrelid
Our findings show that contextualized methods can often predict high change scores for words which are not undergoing any real diachronic semantic shift in the lexicographic sense of the term (or at least the status of these shifts is questionable).
1 code implementation • LREC 2022 • Anthi Papadopoulou, Pierre Lison, Lilja Øvrelid, Ildikó Pilán
Instead of requiring manually labeled training data, the approach relies on a knowledge graph expressing the background information assumed to be publicly available about various individuals.
1 code implementation • ACL 2022 • David Samuel, Jeremy Barnes, Robin Kurtz, Stephan Oepen, Lilja Øvrelid, Erik Velldal
This paper demonstrates how a graph-based semantic parser can be applied to the task of structured sentiment analysis, directly predicting sentiment graphs from text.
2 code implementations • 25 Jan 2022 • Ildikó Pilán, Pierre Lison, Lilja Øvrelid, Anthi Papadopoulou, David Sánchez, Montserrat Batet
We present a novel benchmark and associated evaluation metrics for assessing the performance of text anonymization methods.
2 code implementations • ACL 2021 • Jeremy Barnes, Robin Kurtz, Stephan Oepen, Lilja Øvrelid, Erik Velldal
Structured sentiment analysis attempts to extract full opinion tuples from a text, but over time this task has been subdivided into smaller and smaller sub-tasks, e, g,, target extraction or targeted polarity classification.
2 code implementations • NoDaLiDa 2021 • Andrey Kutuzov, Jeremy Barnes, Erik Velldal, Lilja Øvrelid, Stephan Oepen
We present the ongoing NorLM initiative to support the creation and use of very large contextualised language models for Norwegian (and in principle other Nordic languages), including a ready-to-use software environment, as well as an experience report for data preparation and training.
no code implementations • EACL 2021 • Jeremy Barnes, Lilja Øvrelid, Erik Velldal
Fine-grained sentiment analysis attempts to extract sentiment holders, targets and polar expressions and resolve the relationship between them, but progress has been hampered by the difficulty of annotation.
no code implementations • 6 Apr 2020 • Ildikó Pilán, Pål H. Brekke, Lilja Øvrelid
We present a large Norwegian lexical resource of categorized medical terms.
1 code implementation • 19 Feb 2020 • Jeremy Barnes, Vinit Ravishankar, Lilja Øvrelid, Erik Velldal
Documents are composed of smaller pieces - paragraphs, sentences, and tokens - that have complex relationships between one another.
1 code implementation • LREC 2020 • Lilja Øvrelid, Petter Mæhlum, Jeremy Barnes, Erik Velldal
We introduce NoReC_fine, a dataset for fine-grained sentiment analysis in Norwegian, annotated with respect to polar expressions, targets and holders of opinion.
1 code implementation • LREC 2020 • Fredrik Jørgensen, Tobias Aasmoe, Anne-Stine Ruud Husevåg, Lilja Øvrelid, Erik Velldal
This paper presents NorNE, a manually annotated corpus of named entities which extends the annotation of the existing Norwegian Dependency Treebank.
1 code implementation • WS 2019 • Andrey Kutuzov, Erik Velldal, Lilja Øvrelid
We extend the well-known word analogy task to a one-to-X formulation, including one-to-none cases, when no correct answer exists.
1 code implementation • 18 Jun 2019 • Jeremy Barnes, Erik Velldal, Lilja Øvrelid
Sentiment analysis is directly affected by compositional phenomena in language that act on the prior polarity of the words and phrases found in the text.
1 code implementation • WS 2019 • Jeremy Barnes, Lilja Øvrelid, Erik Velldal
Finally, we provide a case study that demonstrates the usefulness of the dataset to probe the performance of a given sentiment classifier with respect to linguistic phenomena.
no code implementations • WS 2019 • Vinit Ravishankar, Lilja Øvrelid, Erik Velldal
This paper extends the task of probing sentence representations for linguistic insight in a multilingual domain.
no code implementations • COLING 2018 • Andrey Kutuzov, Lilja Øvrelid, Terrence Szymanski, Erik Velldal
Recent years have witnessed a surge of publications aimed at tracing temporal changes in lexical semantics using distributional methods, particularly prediction-based word embedding models.
no code implementations • WS 2018 • Farhad Nooralahzadeh, Lilja Øvrelid
We investigate the use of different syntactic dependency representations in a neural relation classification task and compare the CoNLL, Stanford Basic and Universal Dependencies schemes.
no code implementations • SEMEVAL 2018 • Farhad Nooralahzadeh, Lilja Øvrelid, Jan Tore Lønning
This article presents the SIRIUS-LTG-UiO system for the SemEval 2018 Task 7 on Semantic Relation Extraction and Classification in Scientific Papers.
1 code implementation • LREC 2018 • Erik Velldal, Lilja Øvrelid, Eivind Alexander Bergem, Cathrine Stadsnes, Samia Touileb, Fredrik Jørgensen
As resources for sentiment analysis have so far been unavailable for Norwegian, NoReC represents a highly valuable and sought-after addition to Norwegian language technology.
no code implementations • EMNLP 2017 • Andrey Kutuzov, Erik Velldal, Lilja Øvrelid
This paper deals with using word embedding models to trace the temporal dynamics of semantic relations between pairs of words.
no code implementations • CONLL 2016 • Andrey Kutuzov, Erik Velldal, Lilja Øvrelid
This paper studies how word embeddings trained on the British National Corpus interact with part of speech boundaries.