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Nikolaos Aletras

interpretability

domain adaptation

vqa

bert

knowledge distillation

social media

transformers

domain classification

sentiment analysis

quality estimation

vision

hate speech

information extraction

graph neural networks

transformer

18

presentations

71

number of views

SHORT BIO

Nikos Aletras is a Professor in Natural Language Processing (NLP) in the Computer Science Department at the University of Sheffield, co-affiliated with the Machine Learning (ML) group. Previously, he was a research scientist at Amazon (Core ML and Alexa) and a research associate at UCL, Department of Computer Science, Media Futures Group. He completed a PhD in NLP at the University of Sheffield. His research interests are in NLP, Machine Learning and Data Science. He develops text analysis methods to solve problems in other scientific areas such as (computational) social and legal science.

Presentations

Trading Syntax Trees for Wordpieces: Target-oriented Opinion Words Extraction with Wordpieces and Aspect Enhancement

Samuel Mensah and 2 other authors

Incorporating Attribution Importance for Improving Faithfulness Metrics

Zhixue Zhao and 1 other author

HashFormers: Towards Vocabulary-independent Pre-trained Transformers

Huiyin Xue and 1 other author

Improving Graph-Based Text Representations with Character and Word Level N-grams

Wenzhe Li and 1 other author

Domain Classification-based Source-specific Term Penalization for Domain Adaptation in Hate-speech Detection

Tulika Bose and 3 other authors

Combining Humor and Sarcasm for Improving Political Parody Detection

Danae Sánchez Villegas and 4 other authors

Flexible Instance-Specific Rationalization of NLP Models

George Chrysostomou and 1 other author

Frustratingly Simple Pretraining Alternatives to Masked Language Modeling

Atsuki Yamaguchi and 3 other authors

Active Learning by Acquiring Contrastive Examples

Katerina Margatina and 3 other authors

Enjoy the Salience: Towards Better Transformer-based Faithful Explanations with Word Salience

George Chrysostomou and 1 other author

Active Learning by Acquiring Contrastive Examples

Katerina Margatina and 3 other authors

An Empirical Study on Leveraging Position Embeddings for Target-oriented Opinion Words Extraction

Samuel Mensah and 2 other authors

Improving the Faithfulness of Attention-based Explanations with Task-specific Information for Text Classification

George Chrysostomou and 1 other author

In Factuality: Efficient Integration of Relevant Facts for Visual Question Answering

Peter Vickers and 3 other authors

Knowledge Distillation for Quality Estimation

Amit Gajbhiye and 6 other authors

Paragraph-level Rationale Extraction through Regularization: A case study on European Court of Human Rights Cases

Ilias Chalkidis and 5 other authors

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