Dr Nikos Aletras

PhD

Department of Computer Science

Lecturer in Natural Language Processing

Careers and Placements Officer

Member of the Natural Language Processing (NLP) research group

Nikos Aletras profile photo
n.aletras@sheffield.ac.uk
+44 114 222 1911

Full contact details

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

Nikos Aletras is a Lecturer 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

Conference proceedings papers

  • Blain F, Aletras N & Specia L (2020) Quality In, Quality Out: Learning from Actual Mistakes.. EAMT (pp 145-153) RIS download Bibtex download
  • Maronikolakis A, Villegas DS, Preotiuc-Pietro D & Aletras N (2020) Analyzing Political Parody in Social Media.. ACL (pp 4373-4384) RIS download Bibtex download
  • (2020) Proceedings of the Natural Legal Language Processing Workshop 2020 co-located with the 26th ACM SIGKDD International Conference on Knowledge Discovery & Data Mining (KDD 2020), Virtual Workshop, August 24, 2020.. NLLP@KDD, Vol. 2645 RIS download Bibtex download
  • Alokaili A, Aletras N & Stevenson M (2020) Automatic Generation of Topic Labels.. SIGIR (pp 1965-1968) RIS download Bibtex download
  • Aletras N, Androutsopoulos I, Barrett L, Meyers A & Preotiuc-Pietro D (2020) Introduction to the nllp 2020workshop. CEUR Workshop Proceedings, Vol. 2645 RIS download Bibtex download
  • Chalkidis I, Fergadiotis M, Malakasiotis P, Aletras N & Androutsopoulos I (2020) LEGAL-BERT: "Preparing the Muppets for Court'".. EMNLP (Findings) (pp 2898-2904) RIS download Bibtex download
  • Alokaili A, Aletras N & Stevenson M (2020) Automatic Generation of Topic Labels. Proceedings of the 43rd International ACM SIGIR Conference on Research and Development in Information Retrieval View this article in WRRO RIS download Bibtex download
  • Chalkidis I, Fergadiotis E, Malakasiotis P, Aletras N & Androutsopoulos I (2019) Extreme Multi-Label Legal Text Classification: A Case Study in. Proceedings of the Natural Legal Language Processing Workshop 2019, June 2019 - June 2019. RIS download Bibtex download
  • Chalkidis I, Androutsopoulos I & Aletras N (2019) Neural Legal Judgment Prediction in English. Proceedings of the 57th Annual Meeting of the Association for Computational Linguistics (pp 4317-4323). Florence, Italy, 28 July 2019 - 2 August 2019. View this article in WRRO RIS download Bibtex download
  • Preoţiuc-Pietro D, Gaman M & Aletras N (2019) Automatically identifying complaints in social media. Proceedings of the 57th Annual Meeting of the Association for Computational Linguistics (pp 5008-5019). Florence, Italy, 28 July 2019 - 2 August 2019. View this article in WRRO RIS download Bibtex download
  • Karmakharm T, Aletras N & Bontcheva K (2019) Journalist-in-the-Loop: Continuous Learning as a Service for Rumour Analysis. 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, November 2019 - November 2019. RIS download Bibtex download
  • Preotiuc-Pietro D, Gaman M & Aletras N (2019) Automatically Identifying Complaints in Social Media.. ACL (1) (pp 5008-5019) RIS download Bibtex download
  • 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 '18 Proceedings of the 27th ACM International Conference on Information and Knowledge Management (pp 367-376), 22 October 2018 - 26 October 2018. View this article in WRRO RIS download Bibtex download
  • Aletras N & Chamberlain BP (2018) Predicting Twitter User Socioeconomic Attributes with Network and Language Information. Proceedings of the 29th ACM Conference on Hypertext and Social Media (pp 20-24), 9 July 2018 - 12 July 2018. View this article in WRRO RIS download Bibtex download
  • 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) RIS download Bibtex download
  • Sorodoc I, Lau JH, Aletras N & Baldwin T (2017) Multimodal Topic Labelling. Proceedings of the 15th Conference of the European Chapter of the Association for Computational Linguistics: Volume 2, Short Papers, April 2017 - April 2017. RIS download Bibtex download
  • Aletras N & Mittal A (2017) Labeling topics with images using a neural network. 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. RIS download Bibtex download
  • Lampos V, Aletras N, Geyti JK, Zou B & Cox IJ (2016) Inferring the Socioeconomic Status of Social Media Users Based on Behaviour and Language (pp 689-695) RIS download Bibtex download
  • Aletras N, Lau JH, Baldwin T & Stevenson M (2015) TM 2015 -- Topic Models. Proceedings of the 24th ACM International on Conference on Information and Knowledge Management - CIKM '15, 18 October 2015 - 23 October 2015. RIS download Bibtex download
  • Aletras N & Stevenson M (2015) A Hybrid Distributional and Knowledge-based Model of Lexical Semantics. Proceedings of the Fourth Joint Conference on Lexical and Computational Semantics, June 2015 - June 2015. RIS download Bibtex download
  • Preoţiuc-Pietro D, Lampos V & Aletras N (2015) An analysis of the user occupational class through Twitter content. Proceedings of the 53rd Annual Meeting of the Association for Computational Linguistics and the 7th International Joint Conference on Natural Language Processing (pp 1754-1764) RIS download Bibtex download
  • (2015) Proceedings of the 2015 Workshop on Topic Models: Post-Processing and Applications, TM 2015, Melbourne, Australia, October 19, 2015. TM@CIKM RIS download Bibtex download
  • Aletras N & Stevenson M (2014) Labelling Topics using Unsupervised Graph-based Methods. Proceedings of the 52nd Annual Meeting of the Association for Computational Linguistics (ACL 2014), Vol. 2 (pp 631-636) RIS download Bibtex download
  • Aletras N & Stevenson M (2014) Measuring the Similarity between Automatically Generated Topics. Proceedings of the 14th Conference of the European Chapter of the Association for Computational Linguistics, volume 2: Short Papers, April 2014 - April 2014. RIS download Bibtex download
  • Aletras N, Baldwin T, Lau JH & Stevenson M (2014) Representing topics labels for exploring digital libraries. IEEE/ACM Joint Conference on Digital Libraries, 8 September 2014 - 12 September 2014. RIS download Bibtex download
  • 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 RIS download Bibtex download
  • Agirre E, Aletras N, Clough PD, Fernando S, Goodale P, Hall MM, Soroa A & Stevenson M (2013) PATHS: A System for Accessing Cultural Heritage Collections.. ACL (Conference System Demonstrations) (pp 151-156) RIS download Bibtex download
  • 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) RIS download Bibtex download
  • Aletras N & Stevenson M (2013) Evaluating topic coherence using distributional semantics. Proceedings of the 10th International Conference on Computational Semantics, IWCS 2013 - Long Papers RIS download Bibtex download
  • 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) RIS download Bibtex download
  • 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 RIS download Bibtex download
  • 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 (pp 85-93). Avignon, France RIS download Bibtex download
  • 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) RIS download Bibtex download
  • Wood G & Demirbag M () Introduction RIS download Bibtex download
Grants