1 code implementation • NAACL (NLP4IF) 2021 • Giannis Bekoulis, Christina Papagiannopoulou, Nikos Deligiannis
Fact Extraction and VERification (FEVER) is a recently introduced task that consists of the following subtasks (i) document retrieval, (ii) sentence retrieval, and (iii) claim verification.
no code implementations • EMNLP (WNUT) 2020 • Xiangyu Yang, Giannis Bekoulis, Nikos Deligiannis
To mitigate the noisy nature of the Twitter stream, our system makes use of the COVID-Twitter-BERT (CT-BERT), which is a language model pre-trained on a large corpus of COVID-19 related Twitter messages.
no code implementations • 13 Sep 2021 • Xiangyu Yang, Giannis Bekoulis, Nikos Deligiannis
In particular, we experiment with several models to identify (i) whether a tweet is traffic-related or not, and (ii) in the case that the tweet is traffic-related to identify more fine-grained information regarding the event (e. g., the type of the event, where the event happened).
no code implementations • 16 Mar 2021 • Lusine Abrahamyan, Yiming Chen, Giannis Bekoulis, Nikos Deligiannis
In contrast, we advocate that the gradients across the nodes are correlated and propose methods to leverage this inter-node redundancy to improve compression efficiency.
1 code implementation • 6 Oct 2020 • Giannis Bekoulis, Christina Papagiannopoulou, Nikos Deligiannis
We study the fact checking problem, which aims to identify the veracity of a given claim.
no code implementations • 11 Sep 2020 • Klim Zaporojets, Giannis Bekoulis, Johannes Deleu, Thomas Demeester, Chris Develder
Recent works use automatic extraction and ranking of candidate solution equations providing the answer to arithmetic word problems.
no code implementations • 28 Aug 2020 • Tien Huu Do, Duc Minh Nguyen, Giannis Bekoulis, Adrian Munteanu, Nikos Deligiannis
Among the existing GCNNs, many methods can be viewed as instances of a neural message passing motif; features of nodes are passed around their neighbors, aggregated and transformed to produce better nodes' representations.
1 code implementation • EMNLP 2020 • Farhad Nooralahzadeh, Giannis Bekoulis, Johannes Bjerva, Isabelle Augenstein
We show that this challenging setup can be approached using meta-learning, where, in addition to training a source language model, another model learns to select which training instances are the most beneficial to the first.
no code implementations • WS 2019 • Semere Kiros Bitew, Giannis Bekoulis, Johannes Deleu, Lucas Sterckx, Klim Zaporojets, Thomas Demeester, Chris Develder
This paper describes IDLab{'}s text classification systems submitted to Task A as part of the CLPsych 2019 shared task.
1 code implementation • NAACL 2019 • Giannis Bekoulis, Johannes Deleu, Thomas Demeester, Chris Develder
This paper introduces improved methods for sub-event detection in social media streams, by applying neural sequence models not only on the level of individual posts, but also directly on the stream level.
1 code implementation • EMNLP 2018 • Giannis Bekoulis, Johannes Deleu, Thomas Demeester, Chris Develder
Adversarial training (AT) is a regularization method that can be used to improve the robustness of neural network methods by adding small perturbations in the training data.
Ranked #7 on
Relation Extraction
on ACE 2004
6 code implementations • 20 Apr 2018 • Giannis Bekoulis, Johannes Deleu, Thomas Demeester, Chris Develder
State-of-the-art models for joint entity recognition and relation extraction strongly rely on external natural language processing (NLP) tools such as POS (part-of-speech) taggers and dependency parsers.
Ranked #7 on
Relation Extraction
on CoNLL04
1 code implementation • 27 Sep 2017 • Giannis Bekoulis, Johannes Deleu, Thomas Demeester, Chris Develder
In this work, we propose a new joint model that is able to tackle the two tasks simultaneously and construct the property tree by (i) avoiding the error propagation that would arise from the subtasks one after the other in a pipelined fashion, and (ii) exploiting the interactions between the subtasks.
1 code implementation • EACL 2017 • Giannis Bekoulis, Johannes Deleu, Thomas Demeester, Chris Develder
In this paper, we address the (to the best of our knowledge) new problem of extracting a structured description of real estate properties from their natural language descriptions in classifieds.