Search Results for author: Elena Kochkina

Found 19 papers, 8 papers with code

Large Language Models as Financial Data Annotators: A Study on Effectiveness and Efficiency

no code implementations26 Mar 2024 Toyin Aguda, Suchetha Siddagangappa, Elena Kochkina, Simerjot Kaur, Dongsheng Wang, Charese Smiley, Sameena Shah

Collecting labeled datasets in finance is challenging due to scarcity of domain experts and higher cost of employing them.

Sig-Networks Toolkit: Signature Networks for Longitudinal Language Modelling

1 code implementation6 Dec 2023 Talia Tseriotou, Ryan Sze-Yin Chan, Adam Tsakalidis, Iman Munire Bilal, Elena Kochkina, Terry Lyons, Maria Liakata

We present an open-source, pip installable toolkit, Sig-Networks, the first of its kind for longitudinal language modelling.

Language Modelling

PANACEA: An Automated Misinformation Detection System on COVID-19

no code implementations28 Feb 2023 Runcong Zhao, Miguel Arana-Catania, Lixing Zhu, Elena Kochkina, Lin Gui, Arkaitz Zubiaga, Rob Procter, Maria Liakata, Yulan He

In this demo, we introduce a web-based misinformation detection system PANACEA on COVID-19 related claims, which has two modules, fact-checking and rumour detection.

Fact Checking Misinformation +2

Building for Tomorrow: Assessing the Temporal Persistence of Text Classifiers

1 code implementation11 May 2022 Rabab Alkhalifa, Elena Kochkina, Arkaitz Zubiaga

Therefore an ability to predict a model's ability to persist over time can help design models that can be effectively used over a longer period of time.

text-classification Text Classification

Opinions are Made to be Changed: Temporally Adaptive Stance Classification

1 code implementation27 Aug 2021 Rabab Alkhalifa, Elena Kochkina, Arkaitz Zubiaga

We propose a novel approach to mitigate this performance drop, which is based on temporal adaptation of the word embeddings used for training the stance classifier.

Classification Stance Classification +1

Boosting Low-Resource Biomedical QA via Entity-Aware Masking Strategies

no code implementations EACL 2021 Gabriele Pergola, Elena Kochkina, Lin Gui, Maria Liakata, Yulan He

Biomedical question-answering (QA) has gained increased attention for its capability to provide users with high-quality information from a vast scientific literature.

Domain Adaptation Question Answering +1

Estimating predictive uncertainty for rumour verification models

1 code implementation ACL 2020 Elena Kochkina, Maria Liakata

The inability to correctly resolve rumours circulating online can have harmful real-world consequences.

Rumour Detection

Cost-Sensitive BERT for Generalisable Sentence Classification with Imbalanced Data

1 code implementation16 Mar 2020 Harish Tayyar Madabushi, Elena Kochkina, Michael Castelle

The automatic identification of propaganda has gained significance in recent years due to technological and social changes in the way news is generated and consumed.

Data Augmentation General Classification +5

Cost-Sensitive BERT for Generalisable Sentence Classification on Imbalanced Data

no code implementations WS 2019 Harish Tayyar Madabushi, Elena Kochkina, Michael Castelle

The automatic identification of propaganda has gained significance in recent years due to technological and social changes in the way news is generated and consumed.

Data Augmentation General Classification +5

All-in-one: Multi-task Learning for Rumour Verification

no code implementations COLING 2018 Elena Kochkina, Maria Liakata, Arkaitz Zubiaga

We propose a multi-task learning approach that allows joint training of the main and auxiliary tasks, improving the performance of rumour verification.

General Classification Multi-Task Learning +2

Discourse-Aware Rumour Stance Classification in Social Media Using Sequential Classifiers

no code implementations6 Dec 2017 Arkaitz Zubiaga, Elena Kochkina, Maria Liakata, Rob Procter, Michal Lukasik, Kalina Bontcheva, Trevor Cohn, Isabelle Augenstein

We show that sequential classifiers that exploit the use of discourse properties in social media conversations while using only local features, outperform non-sequential classifiers.

General Classification Stance Classification

Turing at SemEval-2017 Task 8: Sequential Approach to Rumour Stance Classification with Branch-LSTM

1 code implementation SEMEVAL 2017 Elena Kochkina, Maria Liakata, Isabelle Augenstein

This paper describes team Turing's submission to SemEval 2017 RumourEval: Determining rumour veracity and support for rumours (SemEval 2017 Task 8, Subtask A).

General Classification Rumour Detection +2

Stance Classification in Rumours as a Sequential Task Exploiting the Tree Structure of Social Media Conversations

no code implementations COLING 2016 Arkaitz Zubiaga, Elena Kochkina, Maria Liakata, Rob Procter, Michal Lukasik

Rumour stance classification, the task that determines if each tweet in a collection discussing a rumour is supporting, denying, questioning or simply commenting on the rumour, has been attracting substantial interest.

General Classification Rumour Detection +1

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