Professor Nikos Aletras

School of Computer Science

Professor of Natural Language Processing

Head of the Natural Language Processing (NLP) research group

Nikos Aletras profile pic
Profile picture of Nikos Aletras profile pic
n.aletras@sheffield.ac.uk

Full contact details

Professor Nikos Aletras
School of Computer Science
Regent Court (DCS)
211 Portobello
Sheffield
S1 4DP
Profile

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.

Research interests
  • NLP
  • Computational Social Science
  • Legal NLP
  • Data Science
  • Machine Learning
Publications

Journal articles

  • Cao M, Wang X & Aletras N (2025) Progressive Depth Up-scaling via Optimal Transport.. CoRR, abs/2508.08011.
  • Fang J, Peng Y, Zhang X, Wang Y, Yi X, Zhang G, Xu Y, Wu B, Liu S, Li Z , Ren Z et al (2025) A Comprehensive Survey of Self-Evolving AI Agents: A New Paradigm Bridging Foundation Models and Lifelong Agentic Systems.. CoRR, abs/2508.07407.
  • Lewis-Lim S, Tan X, Zhao Z & Aletras N (2025) Analysing Chain of Thought Dynamics: Active Guidance or Unfaithful Post-hoc Rationalisation?. CoRR, abs/2508.19827.
  • Meng C, Tonolini F, Mo F, Aletras N, Yilmaz E & Kazai G (2025) . SIGIR '25: Proceedings of the 48th International ACM SIGIR Conference on Research and Development in Information Retrieval, 64-74.
  • Chlapanis OS, Galanis D, Aletras N & Androutsopoulos I (2025) GreekBarBench: A Challenging Benchmark for Free-Text Legal Reasoning and Citations.. CoRR, abs/2505.17267.
  • Tan X, Valentino M, Akhter ME, Liakata M & Aletras N (2025) Enhancing Logical Reasoning in Language Models via Symbolically-Guided Monte Carlo Process Supervision.. CoRR, abs/2505.20415.
  • Williams M, Chrysostomou G, Jeronymo V & Aletras N (2025) Compressing Language Models for Specialized Domains.. CoRR, abs/2502.18424.
  • Mu Y, Niu P, Bontcheva K & Aletras N (2024) . Expert Systems with Applications, 243.
  • Chrysostomou G, Zhao Z, Williams M & Aletras N (2024) . Transactions of the Association for Computational Linguistics, 12, 1163-1181.
  • Zhao Z & Aletras N (2024) . Proceedings of the 2024 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies (Volume 1: Long Papers), 1, 3226-3244.
  • Mu Y, Song X, Bontcheva K & Aletras N (2024) Examining the limitations of computational rumor detection models trained on static datasets. 2024 Joint International Conference on Computational Linguistics, Language Resources and Evaluation, LREC-COLING 2024 - Main Conference Proceedings, 6739-6751.
  • Mu Y, Wu BP, Thorne W, Robinson A, Aletras N, Scarton C, Bontcheva K & Song X (2024) Navigating prompt complexity for zero-shot classification: a study of large language models in computational social science. Proceedings of the 2024 Joint International Conference on Computational Linguistics, Language Resources and Evaluation (LREC-COLING 2024), 12074-12086.
  • Yamaguchi A, Villavicencio A & Aletras N (2024) . Findings of the Association for Computational Linguistics: EMNLP 2024, 6760-6785.
  • Villegas DS, PreoÅ£iuc-Pietro D & Aletras N (2024) Improving Multimodal Classification of Social Media Posts by Leveraging Image-Text Auxiliary Tasks. Eacl 2024 18th Conference of the European Chapter of the Association for Computational Linguistics Findings of Eacl 2024, 1126-1137.
  • Jin M, PreoÅ£iuc-Pietro D, DoÄŸruöz AS & Aletras N (2024) Who is bragging more online? A large scale analysis of bragging in social media. 2024 Joint International Conference on Computational Linguistics Language Resources and Evaluation Lrec Coling 2024 Main Conference Proceedings, 17575-17587.
  • Yamaguchi A, Villavicencio A & Aletras N (2024) Vocabulary Expansion for Low-resource Cross-lingual Transfer.. CoRR, abs/2406.11477.
  • De Clercq O & Aletras N (2024) Introduction. Eacl 2024 18th Conference of the European Chapter of the Association for Computational Linguistics Proceedings of System Demonstrations, IV.
  • Mu Y, Jin M, Song X & Aletras N (2024) Enhancing Data Quality through Simple De-duplication: Navigating Responsible Computational Social Science Research.. CoRR, abs/2410.03545.
  • Hughes A, Aletras N & Ma N (2024) How Private are Language Models in Abstractive Summarization?. CoRR, abs/2412.12040.
  • Yamaguchi A, Morishita T, Villavicencio A & Aletras N (2024) Vocabulary Expansion of Chat Models with Unlabeled Target Language Data.. CoRR, abs/2412.11704.
  • Lalmas M, Zhang M, Santos R, Yilmaz E, Joho H, Ding W, Hauff C, Aletras N, Jaidka K & Alhoori H (2023) . International Conference on Information and Knowledge Management Proceedings, v.
  • Dommett K, Mensah SA, Zhu J, Stafford T & Aletras N (2023) . Journal of Political Marketing, 24(2), 143-161.
  • Vickers P, Barrault L, Monti E & Aletras N (2023) . Proceedings of the 13th International Joint Conference on Natural Language Processing and the 3rd Conference of the Asia-Pacific Chapter of the Association for Computational Linguistics (Volume 1: Long Papers).
  • Williams M & Aletras N (2023) Frustratingly Simple Memory Efficiency for Pre-trained Language Models via Dynamic Embedding Pruning.. CoRR, abs/2309.08708.
  • Xue H & Aletras N (2023) . Findings of the Association for Computational Linguistics: EMNLP 2023, 10355-10373.
  • Sánchez Villegas D, Goanta C & Aletras N (2023) . Proceedings of the 13th International Joint Conference on Natural Language Processing and the 3rd Conference of the Asia-Pacific Chapter of the Association for Computational Linguistics (Volume 1: Long Papers), 225-240.
  • Alajrami A, Margatina K & Aletras N (2023) . Proceedings of the 2023 Conference on Empirical Methods in Natural Language Processing, 9085-9108.
  • Goanta C, Aletras N, Chalkidis I, Ranchordás S & Spanakis G (2023) . Proceedings of the 2023 Conference on Empirical Methods in Natural Language Processing, 8712-8724.
  • Margatina K, Schick T, Aletras N & Dwivedi-Yu J (2023) . Findings of the Association for Computational Linguistics: EMNLP 2023, 5011-5034.
  • Williams M & Aletras N (2023) How Does Calibration Data Affect the Post-training Pruning and Quantization of Large Language Models?. CoRR, abs/2311.09755.
  • Zhang L, Song H, Aletras N & Lu H (2022) . Pattern Recognition, 128.
  • Li W & Aletras N (2022) . Proceedings of the 2nd Conference of the Asia-Pacific Chapter of the Association for Computational Linguistics and the 12th International Joint Conference on Natural Language Processing (Volume 2: Short Papers), 228-233.
  • Mu Y, Niu P & Aletras N (2022) Identifying and Characterizing Active Citizens who Refute Misinformation in Social Media.. CoRR, abs/2204.10080.
  • Mu Y & Aletras N (2020) . PeerJ Computer Science, 6.
  • Fomicheva M, Sun S, Yankovskaya L, Blain F, Guzmán F, Fishel M, Aletras N, Chaudhary V & Specia L (2020) . Transactions of the Association for Computational Linguistics, 8(2020), 539-555.
  • Aletras N, Tsarapatsanis D, PreoÅ£iuc-Pietro D & Lampos V (2016) . PeerJ in Computer Science, 2.
  • Aletras N, Baldwin T, Lau J & Stevenson M (2015) . Journal of the Association for Information Science and Technology.
  • Gonzalez-Agirre A, Rigau G, Agirre E, Aletras N & Stevenson M (2015) . Journal of the Association for Information Science and Technology.
  • PreoÅ£iuc-Pietro D, Volkova S, Lampos V, Bachrach Y & Aletras N (2015) . PLoS ONE, 10(9).
  • Aletras N, Stevenson M & Clough P (2012) . Journal of Computing and Cultural Heritage, 5(4).
  • Chrysostomou G & Aletras N () . Proceedings of the AAAI Conference on Artificial Intelligence, 36(10), 10545-10553.

Conference proceedings

  • Williams M & Aletras N (2025) . Proceedings of the 10th Workshop on Representation Learning for NLP (RepL4NLP-2025) (pp 185-196), May 2025 - May 2025.
  • Williams M, Chrysostomou G & Aletras N (2025) . Proceedings of the 2025 Conference of the Nations of the Americas Chapter of the Association for Computational Linguistics: Human Language Technologies (Volume 1: Long Papers) (pp 10149-10167), April 2025 - April 2025.
  • Meng C, Tonolini F, Mo F, Aletras N, Yilmaz E & Kazai G (2025) Bridging the Gap: From Ad-hoc to Proactive Search in Conversations.. SIGIR (pp 64-74)
  • Yamaguchi A, Villavicencio A & Aletras N (2024) An empirical study on cross-lingual vocabulary adaptation for efficient language model inference. Findings of the Association for Computational Linguistics: EMNLP 2024 (pp 6760-6785). Miami, Florida, USA, 12 November 2024 - 12 November 2024.
  • Jin M, Preotiuc-Pietro D, Dogruöz AS & Aletras N (2024) Who Is Bragging More Online? A Large Scale Analysis of Bragging in Social Media.. LREC/COLING (pp 17575-17587)
  • Soun R, Neerkaje A, Sawhney R, Aletras N & Nakov P (2024) RISE: Robust Early-exiting Internal Classifiers for Suicide Risk Evaluation. 2024 Joint International Conference on Computational Linguistics Language Resources and Evaluation Lrec Coling 2024 Main Conference Proceedings (pp 14134-14145)
  • (2024) Proceedings of the 18th Conference of the European Chapter of the Association for Computational Linguistics, EACL 2024 - System Demonstrations, St. Julians, Malta, March 17-22, 2024. EACL (Demonstrations)
  • Mu Y, Wu BP, Thorne W, Robinson A, Aletras N, Scarton C, Bontcheva K & Song X (2024) Navigating Prompt Complexity for Zero-Shot Classification: A Study of Large Language Models in Computational Social Science.. LREC/COLING (pp 12074-12086)
  • Villegas DS, Preotiuc-Pietro D & Aletras N (2024) Improving Multimodal Classification of Social Media Posts by Leveraging Image-Text Auxiliary Tasks.. EACL (Findings) (pp 1126-1137)
  • Mu Y, Song X, Bontcheva K & Aletras N (2024) Examining the Limitations of Computational Rumor Detection Models Trained on Static Datasets.. LREC/COLING (pp 6739-6751)
  • Williams M & Aletras N (2024) . Proceedings of the 62nd Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers) (pp 10100-10118), August 2024 - August 2024.
  • Zhao Z & Aletras N (2024) Comparing Explanation Faithfulness between Multilingual and Monolingual Fine-tuned Language Models.. NAACL-HLT (pp 3226-3244)
  • Tonolini F, Aletras N, Massiah J & Kazai G (2024) . Findings of the Association for Computational Linguistics ACL 2024 (pp 12229-12272), August 2024 - August 2024.
  • Mu Y, Jin M, Song X & Aletras N (2024) . Proceedings of the 2024 Conference on Empirical Methods in Natural Language Processing (pp 12477-12492), November 2024 - November 2024.
  • De Clercq O & Aletras N (2024) Introduction. PROCEEDINGS OF THE 18TH CONFERENCE OF THE EUROPEAN CHAPTER OF THE ASSOCIATION FOR COMPUTATIONAL LINGUISTICS: SYSTEM DEMONSTRATIONS (pp IV-IV)
  • Sun K, Zhang R, Samuel M, Nikolaos A, Mao Y & Liu X (2023) . Proceedings of the ACM Web Conference 2023 (pp 1594-1603)
  • Mu Y, Bontcheva K & Aletras N (2023) It’s about Time: Rethinking Evaluation on Rumor Detection Benchmarks using Chronological Splits. Eacl 2023 17th Conference of the European Chapter of the Association for Computational Linguistics Findings of Eacl 2023 (pp 724-731)
  • Shi Z, Tonolini F, Aletras N, Yilmaz E, Kazai G & Jiao Y (2023) . Findings of the Association for Computational Linguistics: ACL 2023 (pp 5614-5634), July 2023 - July 2023.
  • Margatina K & Aletras N (2023) . Findings of the Association for Computational Linguistics: ACL 2023 (pp 4402-4419), July 2023 - July 2023.
  • Mensah S, Sun K & Aletras N (2023) . Proceedings of the 61st Annual Meeting of the Association for Computational Linguistics (Volume 2: Short Papers) (pp 999-1007), July 2023 - July 2023.
  • Zhao Z & Aletras N (2023) . Proceedings of the 61st Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers), Vol. 1 (pp 4732-4745). Toronto, Canada, 9 July 2023 - 9 July 2023.
  • Feng Y, Jiao Y, Prasad A, Aletras N, Yilmaz E & Kazai G (2023) . Proceedings of the 61st Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers) (pp 2079-2091), July 2023 - July 2023.
  • Mu Y, Bontcheva K & Aletras N (2023) . Findings of the Association for Computational Linguistics: EACL 2023 (pp 736-743), May 2023 - May 2023.
  • Tonolini F, Aletras N, Jiao Y & Kazai G (2023) Robust Weak Supervision with Variational Auto-Encoders. Proceedings of Machine Learning Research, Vol. 202 (pp 34394-34408)
  • Xue H & Aletras N (2023) Pit One Against Many: Leveraging Attention-head Embeddings for Parameter-efficient Multi-head Attention.. EMNLP (Findings) (pp 10355-10373)
  • Alajrami A, Margatina K & Aletras N (2023) Understanding the Role of Input Token Characters in Language Models: How Does Information Loss Affect Performance?. EMNLP (pp 9085-9108)
  • Margatina K, Schick T, Aletras N & Dwivedi-Yu J (2023) Active Learning Principles for In-Context Learning with Large Language Models.. EMNLP (Findings) (pp 5011-5034)
  • Goanta C, Aletras N, Chalkidis I, Ranchordás S & Spanakis G (2023) Regulation and NLP (RegNLP): Taming Large Language Models.. EMNLP (pp 8712-8724)
  • Zhao Z & Aletras N (2023) Incorporating Attribution Importance for Improving Faithfulness Metrics.. ACL (1) (pp 4732-4745)
  • Villegas DS, Goanta C & Aletras N (2023) A Multimodal Analysis of Influencer Content on Twitter.. IJCNLP (1) (pp 225-240)
  • Vickers P, Barrault L, Monti E & Aletras N (2023) We Need to Talk ¾Ã²Ý¸£Àû Classification Evaluation Metrics in NLP.. IJCNLP (1) (pp 498-510)
  • Feng Y, Jiao Y, Prasad A, Aletras N, Yilmaz E & Kazai G (2023) Schema-Guided User Satisfaction Modeling for Task-Oriented Dialogues.. ACL (1) (pp 2079-2091)
  • Sawhney R, Agarwal S, Neerkaje AT, Aletras N, Nakov P & Flek L (2022) . Proceedings of the 45th International ACM SIGIR Conference on Research and Development in Information Retrieval (pp 1716-1727)
  • Mu Y, Niu P & Aletras N (2022) . 14th ACM Web Science Conference 2022 (pp 401-410)
  • Fomicheva M, Specia L & Aletras N (2022) . Findings of the Association for Computational Linguistics: ACL 2022 (pp 4148-4159), May 2022 - May 2022.
  • Margatina K, Barrault L & Aletras N (2022) . Proceedings of the 60th Annual Meeting of the Association for Computational Linguistics (Volume 2: Short Papers) (pp 825-836), May 2022 - May 2022.
  • Chalkidis I, Jana A, Hartung D, Bommarito M, Androutsopoulos I, Katz D & Aletras N (2022) . Proceedings of the 60th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers), May 2022 - May 2022.
  • Alajrami A & Aletras N (2022) . Proceedings of the 60th Annual Meeting of the Association for Computational Linguistics (Volume 2: Short Papers) (pp 131-147), May 2022 - May 2022.
  • Bose T, Aletras N, Illina I & Fohr D (2022) . Findings of the Association for Computational Linguistics: ACL 2022 (pp 372-382), May 2022 - May 2022.
  • Jin M, Preotiuc-Pietro D, DoÄŸruöz AS & Aletras N (2022) . Proceedings of the 60th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers) (pp 3945-3959), May 2022 - May 2022.
  • Chrysostomou G & Aletras N (2022) . Proceedings of the 60th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers), May 2022 - May 2022.
  • Ao X, Sanchez Villegas D, Preotiuc-Pietro D & Aletras N (2022) . Proceedings of the 2022 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies, July 2022 - July 2022.
  • Xue H & Aletras N (2022) . Proceedings of the 2022 Conference on Empirical Methods in Natural Language Processing (pp 7862-7874), December 2022 - December 2022.
  • Fomicheva M, Specia L & Aletras N (2022) Translation Error Detection as Rationale Extraction.. ACL (Findings) (pp 4148-4159)
  • Wen J, Zhu Y, Zhang J, Zhou J & Huang M (2022) . Findings of the Association for Computational Linguistics: EMNLP 2022 (pp 2302-2317), December 2022 - December 2022.
  • Zhao Z, Chrysostomou G, Bontcheva K & Aletras N (2022) . Findings of the Association for Computational Linguistics: EMNLP 2022 (pp 4039-4054), December 2022 - December 2022.
  • (2022) Proceedings of the Natural Legal Language Processing Workshop, NLLP@EMNLP 2022, Abu Dhabi, United Arab Emirates (Hybrid), December 8, 2022. NLLP@EMNLP
  • Chalkidis I, Jana A, Hartung D, II MJB, Androutsopoulos I, Katz DM & Aletras N (2022) LexGLUE: A Benchmark Dataset for Legal Language Understanding in English.. ACL (1) (pp 4310-4330)
  • Bose T, Aletras N, Illina I & Fohr D (2022) Domain Classification-based Source-specific Term Penalization for Domain Adaptation in Hate-speech Detection. Proceedings International Conference on Computational Linguistics Coling, Vol. 29(1) (pp 6656-6666)
  • Alajrami A & Aletras N (2022) How does the pre-training objective affect what large language models learn about linguistic properties?. ACL (2) (pp 131-147)
  • Bose T, Aletras N, Illina I & Fohr D (2022) Dynamically Refined Regularization for Improving Cross-corpora Hate Speech Detection.. ACL (Findings) (pp 372-382)
  • Bose T, Aletras N, Illina I & Fohr D (2022) Domain Classification-based Source-specific Term Penalization for Domain Adaptation in Hate-speech Detection.. COLING (pp 6656-6666)
  • Li W & Aletras N (2022) Improving Graph-Based Text Representations with Character and Word Level N-grams.. AACL/IJCNLP (2) (pp 228-233)
  • Li M, Chen J, Mensah S, Aletras N, Yang X & Ye Y (2022) . Findings of the Association for Computational Linguistics: EMNLP 2022 (pp 2498-2509), December 2022 - December 2022.
  • Chrysostomou G & Aletras N (2022) An Empirical Study on Explanations in Out-of-Domain Settings.. ACL (1) (pp 6920-6938)
  • Ao X, Villegas DS, Preotiuc-Pietro D & Aletras N (2022) Combining Humor and Sarcasm for Improving Political Parody Detection.. NAACL-HLT (pp 1800-1807)
  • Jin M, Preotiuc-Pietro D, Dogruöz AS & Aletras N (2022) Automatic Identification and Classification of Bragging in Social Media.. ACL (1) (pp 3945-3959)
  • Li M, Chen J, Mensah S, Aletras N, Yang X & Ye Y (2022) A Hierarchical N-Gram Framework for Zero-Shot Link Prediction.. EMNLP (Findings) (pp 2498-2509)
  • Gajbhiye A, Fomicheva M, Alva-Manchego F, Blain F, Obamuyide A, Aletras N & Specia L (2021) . Findings of the Association for Computational Linguistics: ACL-IJCNLP 2021 (pp 5091-5099). Bangkok, Thailand (virtual conference), 1 August 2021 - 1 August 2021.
  • Sánchez Villegas D & Aletras N (2021) . Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing (pp 7785-7797), November 2021 - November 2021.
  • Yamaguchi A, Chrysostomou G, Margatina K & Aletras N (2021) . Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing (pp 3116-3125), November 2021 - November 2021.
  • Chrysostomou G & Aletras N (2021) . Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing (pp 8189-8200), November 2021 - November 2021.
  • Margatina K, Vernikos G, Barrault L & Aletras N (2021) . Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing, November 2021 - November 2021.
  • Aletras N, Androutsopoulos I, Barrett L, Goantă C, Preotiuc-Pietro D, Agnoloni T, Ash E, Baldwin B, Blair-Stanek A, Borchmann L , Chalkidis I et al (2021) Introduction. Natural Legal Language Processing Nllp 2021 Proceedings of the 2021 Workshop (pp III)
  • Chalkidis I, Fergadiotis M, Tsarapatsanis D, Aletras N, Androutsopoulos I & Malakasiotis P (2021) . Naacl Hlt 2021 2021 Conference of the North American Chapter of the Association for Computational Linguistics Human Language Technologies Proceedings of the Conference (pp 226-241)
  • Jin M & Aletras N (2021) . Naacl Hlt 2021 2021 Conference of the North American Chapter of the Association for Computational Linguistics Human Language Technologies Proceedings of the Conference (pp 2264-2274)
  • Tsarapatsanis D & Aletras N (2021) . Findings of the Association for Computational Linguistics Acl Ijcnlp 2021 (pp 3590-3599)
  • Vickers P, Aletras N, Monti E & Barrault L (2021) . Proceedings of the 59th Annual Meeting of the Association for Computational Linguistics and the 11th International Joint Conference on Natural Language Processing (Volume 2: Short Papers) (pp 468-475), August 2021 - August 2021.
  • Chrysostomou G & Aletras N (2021) Improving the Faithfulness of Attention-based Explanations with Task-specific Information for Text Classification.. ACL/IJCNLP (1) (pp 477-488)
  • Villegas DS, Mokaram S & Aletras N (2021) . Findings of the Association for Computational Linguistics Acl Ijcnlp 2021 (pp 3669-3680)
  • Mensah S, Sun K & Aletras N (2021) . Emnlp 2021 2021 Conference on Empirical Methods in Natural Language Processing Proceedings (pp 9174-9179)
  • (2021) Proceedings of the Natural Legal Language Processing Workshop 2021, NLLP@EMNLP 2021, Punta Cana, Dominican Republic, November 10, 2021. NLLP@EMNLP
  • Chrysostomou G & Aletras N (2021) Enjoy the Salience: Towards Better Transformer-based Faithful Explanations with Word Salience.. EMNLP (1) (pp 8189-8200)
  • Margatina K, Vernikos G, Barrault L & Aletras N (2021) Active Learning by Acquiring Contrastive Examples.. EMNLP (1) (pp 650-663)
  • Yamaguchi A, Chrysostomou G, Margatina K & Aletras N (2021) Frustratingly Simple Pretraining Alternatives to Masked Language Modeling.. EMNLP (1) (pp 3116-3125)
  • Villegas DS & Aletras N (2021) Point-of-Interest Type Prediction using Text and Images.. EMNLP (1) (pp 7785-7797)
  • Mensah S, Sun K & Aletras N (2021) An Empirical Study on Leveraging Position Embeddings for Target-oriented Opinion Words Extraction.. EMNLP (1) (pp 9174-9179)
  • Gargett A, Firth R & Aletras N (2020) . 2020 IEEE International Conference on Big Data (Big Data) (pp 2117-2120), 10 December 2020 - 13 December 2020.
  • Alokaili A, Aletras N & Stevenson M (2020) . Proceedings of the 43rd International ACM SIGIR Conference on Research and Development in Information Retrieval (pp 1965-1968). Online conference, 25 July 2020 - 25 July 2020.
  • Blain F, Aletras N & Specia L (2020) Quality In, Quality Out: Learning from Actual Mistakes. Proceedings of the 22nd Annual Conference of the European Association for Machine Translation Eamt 2020 (pp 145-154)
  • Maronikolakis A, Villegas DS, PreoÅ£iuc-Pietro D & Aletras N (2020) Analyzing political parody in social media. Proceedings of the Annual Meeting of the Association for Computational Linguistics (pp 4373-4384)
  • Aletras N, Androutsopoulos I, Barrett L, Meyers A & Preotiuc-Pietro D (2020) Introduction to the nllp 2020workshop. Ceur Workshop Proceedings, Vol. 2645
  • Alokaili A, Aletras N & Stevenson M (2020) Automatic Generation of Topic Labels.. SIGIR (pp 1965-1968)
  • Chalkidis I, Fergadiotis M, Malakasiotis P, Aletras N & Androutsopoulos I (2020) LEGAL-BERT: "Preparing the Muppets for Court'".. EMNLP (Findings), Vol. EMNLP 2020 (pp 2898-2904)
  • Chalkidis I, Fergadiotis M, Kotitsas S, Malakasiotis P, Aletras N & Androutsopoulos I (2020) An Empirical Study on Large-Scale Multi-Label Text Classification Including Few and Zero-Shot Labels. PROCEEDINGS OF THE 2020 CONFERENCE ON EMPIRICAL METHODS IN NATURAL LANGUAGE PROCESSING (EMNLP) (pp 7503-7515)
  • Jin M & Aletras N (2020) . Coling 2020 28th International Conference on Computational Linguistics Proceedings of the Conference (pp 1765-1771)
  • Sánchez Villegas D, Preotiuc-Pietro D & Aletras N (2020) . Proceedings of the 1st Conference of the Asia-Pacific Chapter of the Association for Computational Linguistics and the 10th International Joint Conference on Natural Language Processing (pp 804-810), December 2020 - December 2020.
  • Chalkidis I, Fergadiotis M, Malakasiotis P, Aletras N & Androutsopoulos I (2020) LEGAL-BERT: The Muppets straight out of Law School. FINDINGS OF THE ASSOCIATION FOR COMPUTATIONAL LINGUISTICS, EMNLP 2020
  • Chalkidis I, Androutsopoulos I & Aletras N (2019) . Proceedings of the 57th Annual Meeting of the Association for Computational Linguistics (pp 4317-4323). Florence, Italy, 28 July 2019 - 2 August 2019.
  • PreoÅ£iuc-Pietro D, Gaman M & Aletras N (2019) . Proceedings of the 57th Annual Meeting of the Association for Computational Linguistics (pp 5008-5019). Florence, Italy, 28 July 2019 - 2 August 2019.
  • Chalkidis I, Fergadiotis E, Malakasiotis P, Aletras N & Androutsopoulos I (2019) . Proceedings of the Natural Legal Language Processing Workshop 2019 (pp 78-87). Minneapolis, Minnesota, USA, 7 June 2019 - 7 June 2019.
  • Alokaili A, Aletras N & Stevenson M (2019) . Proceedings of 13th International Conference on Computational Semantics (IWCS) (pp 43-54). Gothenburg, Sweden, 23 May 2019 - 23 May 2019.
  • Karmakharm T, Aletras N & Bontcheva K (2019) . Proceedings of the 2019 Conference on Empirical Methods in Natural Language Processing and the 9th International Joint Conference on Natural Language Processing (EMNLP-IJCNLP): System Demonstrations (pp 115-120), November 2019 - November 2019.
  • Preotiuc-Pietro D, Gaman M & Aletras N (2019) Automatically Identifying Complaints in Social Media. 57TH ANNUAL MEETING OF THE ASSOCIATION FOR COMPUTATIONAL LINGUISTICS (ACL 2019) (pp 5008-5019)
  • Chalkidis I, Androutsopoulos I & Aletras N (2019) Neural Legal Judgment Prediction in English. 57TH ANNUAL MEETING OF THE ASSOCIATION FOR COMPUTATIONAL LINGUISTICS (ACL 2019) (pp 4317-4323)
  • Tsakalidis A, Aletras N, Cristea AI & Liakata M (2018) . CIKM '18 Proceedings of the 27th ACM International Conference on Information and Knowledge Management (pp 367-376). Torino, Italy, 22 October 2018 - 22 October 2018.
  • Aletras N & Chamberlain BP (2018) . Proceedings of the 29th ACM Conference on Hypertext and Social Media (pp 20-24). Baltimore, MD, USA, 9 July 2018 - 9 July 2018.
  • Tsakalidis A, Aletras N, Cristea AI & Liakata M (2018) Nowcasting the Stance of Social Media Users in a Sudden Vote: The Case of the Greek Referendum.. CIKM (pp 367-376)
  • Sorodoc I, Lau JH, Aletras N & Baldwin T (2017) . Proceedings of the 15th Conference of the European Chapter of the Association for Computational Linguistics: Volume 2, Short Papers (pp 701-706), April 2017 - April 2017.
  • Aletras N & Mittal A (2017) . Advances in Information Retrieval : 39th European Conference on IR Research, ECIR 2017, Aberdeen, UK, April 8-13, 2017, Proceedings (pp 500-505). Aberdeen, UK, 8 April 2017 - 13 April 2017.
  • Lampos V, Aletras N, Geyti JK, Zou B & Cox IJ (2016) (pp 689-695)
  • Aletras N (2015) . Proceedings of the 2015 Workshop on Topic Models: Post-Processing and Applications
  • Aletras N, Lau JH, Baldwin T & Stevenson M (2015) . Proceedings of the 24th ACM International on Conference on Information and Knowledge Management (pp 1953-1954)
  • PreoÅ£iuc-Pietro D, Lampos V & Aletras N (2015) . Proceedings of the 53rd Annual Meeting of the Association for Computational Linguistics and the 7th International Joint Conference on Natural Language Processing (Volume 1: Long Papers), Vol. 1: Long papers(-) (pp 1754-1764), 26 July 2015 - 31 July 2015.
  • (2015) Proceedings of the 2015 Workshop on Topic Models: Post-Processing and Applications, TM 2015, Melbourne, Australia, October 19, 2015. TM@CIKM
  • Aletras N & Stevenson M (2015) . Proceedings of the Fourth Joint Conference on Lexical and Computational Semantics (pp 20-29), June 2015 - June 2015.
  • Aletras N, Baldwin T, Lau JH & Stevenson M (2014) . IEEE/ACM Joint Conference on Digital Libraries, 8 September 2014 - 12 September 2014.
  • Aletras N & Stevenson M (2014) . Proceedings of the 52nd Annual Meeting of the Association for Computational Linguistics (ACL 2014), Vol. 2 (pp 631-636)
  • Aletras N & Stevenson M (2014) . Proceedings of the 14th Conference of the European Chapter of the Association for Computational Linguistics, volume 2: Short Papers, April 2014 - April 2014.
  • Lampos V, Aletras N, Preotiuc-Pietro D & Cohn T (2014) Predicting and Characterising User Impact on Twitter. Proceedings of the 14th Conference of the European Chapter of the Association for Computational Linguistics
  • Agirre E, Aletras N, Clough P, Fernando S, Goodale P, Hall M, Soroa A & Stevenson M (2013) PATHS: A system for accessing cultural heritage collections. Proceedings of the Annual Meeting of the Association for Computational Linguistics, Vol. 2013-August (pp 151-156)
  • Agirre E, Aletras N, Gonzalez-Agirre A, Rigau G & Stevenson M (2013) UBC UOS-TYPED: Regression for Typed-similarity. Sem 2013 2nd Joint Conference on Lexical and Computational Semantics, Vol. 1 (pp 132-137)
  • Aletras N & Stevenson M (2013) Evaluating topic coherence using distributional semantics. Proceedings of the 10th International Conference on Computational Semantics Iwcs 2013 Long Papers
  • Aletras N & Stevenson M (2013) Representing topics using images. Naacl Hlt 2013 2013 Conference of the North American Chapter of the Association for Computational Linguistics Human Language Technologies Proceedings of the Main Conference (pp 158-167)
  • Agirre E, Aletras N, Gonzalez-Agirre A, Rigau G & Stevenson M (2013) UBC UOS-TYPED: Regression for Typed-similarity. Sem 2013 2nd Joint Conference on Lexical and Computational Semantics Proceedings of the Main Conference and the Shared Task Semantic Textual Similaritysem 2013 2nd Joint Conference on Lexical and Computational Semantics Proceedings of the Main Conference and the Shared Task Semantic Textual Similarity (pp 132-137)
  • Goodale P, Clough P, Ford N, Hall M, Stevenson M, Fernando S, Aletras N, Fernie K, Archer P & De Polo A (2012) User-centred design to support exploration and path creation in cultural heritage collections. Ceur Workshop Proceedings, Vol. 909 (pp 75-78)
  • Hall M, Agirre E, Aletras N, Bergheim R, Chandrinos K, Clough P, Fernando S, Fernie K, Goodale P, Griffiths J , Lopez de Lacalle O et al (2012) PATHS - Exploring Digital Cultural Heritage Spaces. Theory and Practice of Digital Libraries 2012. Cyprus
  • Wood G & Demirbag M (2012)
  • Aletras N & Stevenson M (2012) Computing similarity between cultural heritage items using multimodal features. Proceedings of the 6th Workshop on Language Technology for Cultural Heritage Social Sciences and Humanities Latech 2012 at the 13th Conference of the European Chapter of the Association for Computational Linguistics Eacl 2012 (pp 85-93)

Preprints

  • Xue H, Moosavi NS & Aletras N (2025) Deconstructing Attention: Investigating Design Principles for Effective Language Modeling, arXiv.
  • Hughes A, Duddu V, Asokan N, Aletras N & Ma N (2025) PATCH: Mitigating PII Leakage in Language Models with Privacy-Aware Targeted Circuit PatcHing.
  • Alajrami A, Tan X & Aletras N (2025) Fine-Tuning on Noisy Instructions: Effects on Generalization and Performance, arXiv.
  • Yamaguchi A, Morishita T, Villavicencio A & Aletras N (2025) , arXiv.
  • Tan X, Valentino M, Akhter M, Liakata M & Aletras N (2025) , arXiv.
  • Fang J, Peng Y, Zhang X, Wang Y, Yi X, Zhang G, Xu Y, Wu B, Liu S, Li Z , Ren Z et al (2025) , arXiv.
  • Lewis-Lim S, Tan X, Zhao Z & Aletras N (2025) , arXiv.
  • Cao M, Wang X & Aletras N (2025) , arXiv.
  • Meng C, Tonolini F, Mo F, Aletras N, Yilmaz E & Kazai G (2025) , arXiv.
  • Chlapanis OS, Galanis D, Aletras N & Androutsopoulos I (2025) , arXiv.
  • Williams M, Chrysostomou G & Aletras N (2025) , arXiv.
  • Williams M, Chrysostomou G, Jeronymo V & Aletras N (2025) , arXiv.
  • Hughes A, Ma N & Aletras N (2024) , arXiv.
  • Mu Y, Jin M, Song X & Aletras N (2024) , arXiv.
  • Yamaguchi A, Villavicencio A & Aletras N (2024) , arXiv.
  • Jin M, PreoÅ£iuc-Pietro D, DoÄŸruöz AS & Aletras N (2024) , arXiv.
  • Zhao Z & Aletras N (2024) , arXiv.
  • Vickers P, Barrault L, Monti E & Aletras N (2024) , arXiv.
  • Williams M & Aletras N (2023) , arXiv.
  • Chrysostomou G, Zhao Z, Williams M & Aletras N (2023) , arXiv.
  • Alajrami A, Margatina K & Aletras N (2023) , arXiv.
  • Xue H & Aletras N (2023) , arXiv.
  • Goanta C, Aletras N, Chalkidis I, Ranchordas S & Spanakis G (2023) , arXiv.
  • Mu Y, Song X, Bontcheva K & Aletras N (2023) , arXiv.
  • Williams M & Aletras N (2023) , arXiv.
  • Villegas DS, PreoÅ£iuc-Pietro D & Aletras N (2023) , arXiv.
  • Villegas DS, Goanta C & Aletras N (2023) , arXiv.
  • Feng Y, Jiao Y, Prasad A, Aletras N, Yilmaz E & Kazai G (2023) , arXiv.
  • Margatina K, Schick T, Aletras N & Dwivedi-Yu J (2023) , arXiv.
  • Mu Y, Wu BP, Thorne W, Robinson A, Aletras N, Scarton C, Bontcheva K & Song X (2023) , arXiv.
  • Shi Z, Tonolini F, Aletras N, Yilmaz E, Kazai G & Jiao Y (2023) , arXiv.
  • Margatina K & Aletras N (2023) , arXiv.
  • Mensah S, Sun K & Aletras N (2023) , arXiv.
  • Zhao Z & Aletras N (2023) , arXiv.
  • Sun K, Zhang R, Mensah S, Aletras N, Mao Y & Liu X (2023) , arXiv.
  • Mu Y, Bontcheva K & Aletras N (2023) , arXiv.
  • Zhao Z, Chrysostomou G, Bontcheva K & Aletras N (2022) , arXiv.
  • Xue H & Aletras N (2022) , arXiv.
  • Li W & Aletras N (2022) , arXiv.
  • Bose T, Aletras N, Illina I & Fohr D (2022) , arXiv.
  • Ao X, Villegas DS, PreoÅ£iuc-Pietro D & Aletras N (2022) , arXiv.
  • Mu Y, Niu P & Aletras N (2022) , arXiv.
  • Li M, Chen J, Mensah S, Aletras N, Yang X & Ye Y (2022) , arXiv.
  • Bose T, Aletras N, Illina I & Fohr D (2022) , arXiv.
  • Alajrami A & Aletras N (2022) , arXiv.
  • Jin M, PreoÅ£iuc-Pietro D, DoÄŸruöz AS & Aletras N (2022) , arXiv.
  • Chrysostomou G & Aletras N (2022) , arXiv.
  • Chalkidis I, Jana A, Hartung D, Bommarito M, Androutsopoulos I, Katz DM & Aletras N (2021) , arXiv.
  • Mensah S, Sun K & Aletras N (2021) , arXiv.
  • Gajbhiye A, Fomicheva M, Alva-Manchego F, Blain F, Obamuyide A, Aletras N & Specia L (2021) , arXiv.
  • Villegas DS, Mokaram S & Aletras N (2021) , arXiv.
  • Tsarapatsanis D & Aletras N (2021) , arXiv.
  • Chrysostomou G & Aletras N (2021) , arXiv.
  • Margatina K, Barrault L & Aletras N (2021) , arXiv.
  • Chrysostomou G & Aletras N (2021) , arXiv.
  • Chalkidis I, Fergadiotis M, Tsarapatsanis D, Aletras N, Androutsopoulos I & Malakasiotis P (2021) , arXiv.
  • Jin M & Aletras N (2021) , arXiv.
  • Jin M & Aletras N (2020) , arXiv.
  • Chalkidis I, Fergadiotis M, Malakasiotis P, Aletras N & Androutsopoulos I (2020) , arXiv.
  • Chalkidis I, Fergadiotis M, Kotitsas S, Malakasiotis P, Aletras N & Androutsopoulos I (2020) , arXiv.
  • Villegas DS, PreoÅ£iuc-Pietro D & Aletras N (2020) , arXiv.
  • Alokaili A, Aletras N & Stevenson M (2020) , arXiv.
  • Fomicheva M, Sun S, Yankovskaya L, Blain F, Guzmán F, Fishel M, Aletras N, Chaudhary V & Specia L (2020) , arXiv.
  • Maronikolakis A, Villegas DS, Preotiuc-Pietro D & Aletras N (2020) , arXiv.
  • Preotiuc-Pietro D, Gaman M & Aletras N (2019) , arXiv.
  • Chalkidis I, Androutsopoulos I & Aletras N (2019) , arXiv.
  • Alokaili A, Aletras N & Stevenson M (2019) , arXiv.
  • Zhang L, Song H, Aletras N & Lu H (2018) , arXiv.
  • Tsakalidis A, Aletras N, Cristea AI & Liakata M (2018) , arXiv.
  • Aletras N & Chamberlain BP (2018) , arXiv.
  • Aletras N & Mittal A (2016) , arXiv.
Grants
  • Quantifying, improving and guiding reasoning / Chain-of-Thought (CoT) approaches, Industrial, 08/2025 - 07/2026, £31,605, as PI
  • Efficient Deployment of Large Language Models for Industrial Applications, Industrial, 07/2024 - 07/2025, £30,360, as PI
  • AdSoLve: , RAI (EPSRC), 05/2024 - 03/2028, £3,498,789, as Co-PI
  • ESPERANTO: , Horizon 2020, 01/2021 - 12/2025, £38,070, as co-PI
  • , EPSRC, 04/2019 - 09/2027, £5,508,850, as Co-PI
  • SAI: , EPSRC, 02/2021 - 01/2024, £366,348, as PI
  • Understanding online political advertising: perceptions, uses and regulation, Leverhulme, 01/2021 - 07/2024, £395,011, as Co-PI
  • Responsible AI for Inclusive, Democratic Societies: , ESRC, 02/2020 - 01/2024, £508,135, as Co-PI
  • Bergamot: , EC H2020, 01/2019 - 12/2021, £473,113, as Co-PI
  • , ESRC, 12/2018 - 11/2020, £284,926, as Co-PI
  • Journalist-in-the-Loop Machine Learning as a Service for Rumour Analysis, Industrial, 11/2018 - 12/2019, £44,642, as Co-PI
  • Alexa Fellowship, Amazon, 08/2018 - 08/2021, £73,000, as PI