Dr Nicola Tonellotto
- Honorary Research Fellow (School of Computing Science)
 
Publications
2025
    
    Datta, Suchana, Faggioli, Guglielmo, Ferro, Nicola, Ganguly, Debasis ORCID: https://orcid.org/0000-0003-0050-7138, Muntean, Cristina Ioana, Perego, Raffaele and Tonellotto, Nicola 
ORCID: https://orcid.org/0000-0002-7427-1001
  
(2025)
  
Projection-displacement based query performance prediction for embedded space of dense retrievers.
    
    ACM Transactions on Information Systems,
	 
     
    
    
     
     
  
   (Accepted for Publication)
    
    MacAvaney, Sean ORCID: https://orcid.org/0000-0002-8914-2659, Mallia, Antonio and Tonellotto, Nicola 
ORCID: https://orcid.org/0000-0002-7427-1001
  
(2025)
  
Efficient Constant-Space Multi-Vector Retrieval.
    
    In: 47th European Conference on Information Retrieval (ECIR 2025), Lucca, Italy, 06-10 Apr 2025,
     pp. 237-245. 
     ISBN 9783031887079
    (doi: 10.1007/978-3-031-88714-7_22)
  
  
    
    Petrov, Aleksandr, Macdonald, Craig ORCID: https://orcid.org/0000-0003-3143-279X and Tonellotto, Nicola 
ORCID: https://orcid.org/0000-0002-7427-1001
  
(2025)
  
Efficient Recommendation with Millions of Items by Dynamic Pruning of Sub-Item Embeddings.
    
    In: 48th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2025), Padua, Italy, 13-17 July 2025,
    
    
    
  
   (Accepted for Publication)
    
    Pezzuti, Francesca, MacAvaney, Sean ORCID: https://orcid.org/0000-0002-8914-2659 and Tonellotto, Nicola 
ORCID: https://orcid.org/0000-0002-7427-1001
  
(2025)
  
Exploring the Effectiveness of Multi-stage Fine-tuning for Cross-encoder Re-rankers.
    
    In: 47th European Conference on Information Retrieval (ECIR 2025), Lucca, Italy, 06-10 Apr 2025,
     pp. 455-462. 
     ISBN 9783031887192
    (doi: 10.1007/978-3-031-88714-7_45)
  
  
    
    Yang, Eugene, Tonellotto, Nicola ORCID: https://orcid.org/0000-0002-7427-1001, Lawrie, Dawn, MacAvaney, Sean 
ORCID: https://orcid.org/0000-0002-8914-2659, Mayfield, James, Oard, Douglas and Miller, Scott
  
(2025)
  
MURR: Model Updating with Regularized Replay for Searching a Document Stream.
    
    In: 47th European Conference on Information Retrieval (ECIR 2025), Lucca, Italy, 06-10 Apr 2025,
     pp. 85-100. 
     ISBN 9783031887086
    (doi: 10.1007/978-3-031-88708-6_6)
  
  
    
    Pezzuti, Francesca, Mueller, Ariane, MacAvaney, Sean ORCID: https://orcid.org/0000-0002-8914-2659 and Tonellotto, Nicola 
ORCID: https://orcid.org/0000-0002-7427-1001
  
(2025)
  
Document Quality Scoring for Web Crawling.
    
    In: 2nd International Workshop on Open Web Search (WOWS), Lucca, Italy, 6-10 April 2025,
    
    
    
  
   (Accepted for Publication)
2024
    
    Petrov, Aleksandr V., Macdonald, Craig ORCID: https://orcid.org/0000-0003-3143-279X and Tonellotto, Nicola 
ORCID: https://orcid.org/0000-0002-7427-1001
  
(2024)
  
Efficient Inference of Sub-Item Id-based Sequential Recommendation Models with Millions of Items.
    
    In: 18th ACM Conference on Recommender Systems, Bari, Italy, 14-18 Oct 2024,
     pp. 912-917. 
     ISBN 97984007-05052
    (doi: 10.1145/3640457.3688168)
  
  
    
    MacAvaney, Sean ORCID: https://orcid.org/0000-0002-8914-2659 and Tonellotto, Nicola 
ORCID: https://orcid.org/0000-0002-7427-1001
  
(2024)
  
A Reproducibility Study of PLAID.
    
    In: 47th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2024), Washington D.C., USA, 14-18 July 2024,
     pp. 1411-1419. 
     ISBN 9798400704314
    (doi: 10.1145/3626772.3657856)
  
  
2023
    
    Acquavia, Antonio, Tonellotto, Nicola ORCID: https://orcid.org/0000-0002-7427-1001 and Macdonald, Craig 
ORCID: https://orcid.org/0000-0003-3143-279X
  
(2023)
  
Static Pruning for Multi-Representation Dense Retrieval.
    
    In: 23rd ACM Symposium on Document Engineering (DocEng'23), Limerick, Ireland, 22-25 Aug 2023,
    
     ISBN 9798400700279
    (doi: 10.1145/3573128.3604896)
  
  
    
    Wang, Xiao, Macdonald, Craig ORCID: https://orcid.org/0000-0003-3143-279X, Tonellotto, Nicola 
ORCID: https://orcid.org/0000-0002-7427-1001 and Ounis, Iadh 
ORCID: https://orcid.org/0000-0003-4701-3223
  
(2023)
  
Reproducibility, Replicability, and Insights into Dense Multi-Representation Retrieval Models: from ColBERT to Col*.
    
    In: 46th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR23), Taipei, Taiwan, 23-27 July 2023,
     pp. 2552-2561. 
     ISBN 9781450394086
    (doi: 10.1145/3539618.3591916)
  
  
    
    Wang, Xiao, Macdonald, Craig ORCID: https://orcid.org/0000-0003-3143-279X, Tonellotto, Nicola 
ORCID: https://orcid.org/0000-0002-7427-1001 and Ounis, Iadh 
ORCID: https://orcid.org/0000-0003-4701-3223
  
(2023)
  
ColBERT-PRF: Semantic pseudo-relevance feedback for dense passage and document retrieval.
    
    ACM Transactions on the Web, 17(1),
	 
      3.
    
    (doi: 10.1145/3572405)
     
     
  
  
2022
    
    MacAvaney, Sean ORCID: https://orcid.org/0000-0002-8914-2659, Tonellotto, Nicola 
ORCID: https://orcid.org/0000-0002-7427-1001 and Macdonald, Craig 
ORCID: https://orcid.org/0000-0003-3143-279X
  
(2022)
  
Adaptive Re-Ranking with a Corpus Graph.
    
    In: 31st ACM International Conference on Information and Knowledge Management (CIKM '22), Atlanta, Georgia, USA, 17-21 October 2022,
     pp. 1491-1500. 
     ISBN 9781450392365
    (doi: 10.1145/3511808.3557231)
  
  
    
    Dato, Domenico, MacAvaney, Sean ORCID: https://orcid.org/0000-0002-8914-2659, Nardini, Franco Maria, Perego, Raffaele and Tonellotto, Nicola 
ORCID: https://orcid.org/0000-0002-7427-1001
  
(2022)
  
The Istella22 Dataset: Bridging Traditional and Neural Learning to Rank Evaluation.
    
    In: SIGIR 2022: 45th International ACM SIGIR Conference on Research and Development in Information Retrieval, Madrid, Spain, 11-15 Jul 2022,
     pp. 3099-3107. 
     ISBN 9781450387323
    (doi: 10.1145/3477495.3531740)
  
  
2021
    
    Macdonald, Craig ORCID: https://orcid.org/0000-0003-3143-279X, Tonellotto, Nicola 
ORCID: https://orcid.org/0000-0002-7427-1001, MacAvaney, Sean 
ORCID: https://orcid.org/0000-0002-8914-2659 and Ounis, Iadh 
ORCID: https://orcid.org/0000-0003-4701-3223
  
(2021)
  
PyTerrier: Declarative Experimentation in Python from BM25 to Dense Retrieval.
    
    In: 30th ACM International Conference on Information and Knowledge Management, Virtual Event Queensland, Australia, 01-05 Nov 2021,
     pp. 4526-4533. 
     ISBN 9781450384469
    (doi: 10.1145/3459637.3482013)
  
  
    
    Macdonald, Craig ORCID: https://orcid.org/0000-0003-3143-279X and Tonellotto, Nicola 
ORCID: https://orcid.org/0000-0002-7427-1001
  
(2021)
  
On Approximate Nearest Neighbour Selection for Multi-Stage Dense Retrieval.
    
    In: 30th ACM International Conference on Information and Knowledge Management, 01-05 Nov 2021,
     pp. 3318-3322. 
     ISBN 9781450384469
    (doi: 10.1145/3459637.3482156)
  
  
    
    Tonellotto, Nicola ORCID: https://orcid.org/0000-0002-7427-1001 and Macdonald, Craig 
ORCID: https://orcid.org/0000-0003-3143-279X
  
(2021)
  
Query Embedding Pruning for Dense Retrieval.
    
    In: 30th ACM International Conference on Information and Knowledge Management, Virtual Event Queensland, Australia, 01-05 Nov 2021,
     pp. 3453-3457. 
     ISBN 9781450384469
    (doi: 10.1145/3459637.3482162)
  
  
    
    Wang, Xiao, Macdonald, Craig ORCID: https://orcid.org/0000-0003-3143-279X, Tonellotto, Nicola 
ORCID: https://orcid.org/0000-0002-7427-1001 and Ounis, Iadh 
ORCID: https://orcid.org/0000-0003-4701-3223
  
(2021)
  
Pseudo-Relevance Feedback for Multiple Representation Dense Retrieval.
    
    In: 7th ACM SIGIR International Conference on the Theory of Information Retrieval (ICTIR 2021), 11 Jul 2021,
     pp. 297-306. 
     ISBN 9781450386111
    (doi: 10.1145/3471158.3472250)
  
  
    
    Macdonald, Craig ORCID: https://orcid.org/0000-0003-3143-279X, Tonellotto, Nicola 
ORCID: https://orcid.org/0000-0002-7427-1001 and Ounis, Iadh 
ORCID: https://orcid.org/0000-0003-4701-3223
  
(2021)
  
On Single and Multiple Representations in Dense Passage Retrieval.
    
    In: 11th Italian Information Retrieval Workshop (IIR 2021), Bari, Italy, 13-15 Sep 2021,
    
    
    
  
  
Articles
    
    Datta, Suchana, Faggioli, Guglielmo, Ferro, Nicola, Ganguly, Debasis ORCID: https://orcid.org/0000-0003-0050-7138, Muntean, Cristina Ioana, Perego, Raffaele and Tonellotto, Nicola 
ORCID: https://orcid.org/0000-0002-7427-1001
  
(2025)
  
Projection-displacement based query performance prediction for embedded space of dense retrievers.
    
    ACM Transactions on Information Systems,
	 
     
    
    
     
     
  
   (Accepted for Publication)
    
    Wang, Xiao, Macdonald, Craig ORCID: https://orcid.org/0000-0003-3143-279X, Tonellotto, Nicola 
ORCID: https://orcid.org/0000-0002-7427-1001 and Ounis, Iadh 
ORCID: https://orcid.org/0000-0003-4701-3223
  
(2023)
  
ColBERT-PRF: Semantic pseudo-relevance feedback for dense passage and document retrieval.
    
    ACM Transactions on the Web, 17(1),
	 
      3.
    
    (doi: 10.1145/3572405)
     
     
  
  
Conference Proceedings
    
    MacAvaney, Sean ORCID: https://orcid.org/0000-0002-8914-2659, Mallia, Antonio and Tonellotto, Nicola 
ORCID: https://orcid.org/0000-0002-7427-1001
  
(2025)
  
Efficient Constant-Space Multi-Vector Retrieval.
    
    In: 47th European Conference on Information Retrieval (ECIR 2025), Lucca, Italy, 06-10 Apr 2025,
     pp. 237-245. 
     ISBN 9783031887079
    (doi: 10.1007/978-3-031-88714-7_22)
  
  
    
    Petrov, Aleksandr, Macdonald, Craig ORCID: https://orcid.org/0000-0003-3143-279X and Tonellotto, Nicola 
ORCID: https://orcid.org/0000-0002-7427-1001
  
(2025)
  
Efficient Recommendation with Millions of Items by Dynamic Pruning of Sub-Item Embeddings.
    
    In: 48th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2025), Padua, Italy, 13-17 July 2025,
    
    
    
  
   (Accepted for Publication)
    
    Pezzuti, Francesca, MacAvaney, Sean ORCID: https://orcid.org/0000-0002-8914-2659 and Tonellotto, Nicola 
ORCID: https://orcid.org/0000-0002-7427-1001
  
(2025)
  
Exploring the Effectiveness of Multi-stage Fine-tuning for Cross-encoder Re-rankers.
    
    In: 47th European Conference on Information Retrieval (ECIR 2025), Lucca, Italy, 06-10 Apr 2025,
     pp. 455-462. 
     ISBN 9783031887192
    (doi: 10.1007/978-3-031-88714-7_45)
  
  
    
    Yang, Eugene, Tonellotto, Nicola ORCID: https://orcid.org/0000-0002-7427-1001, Lawrie, Dawn, MacAvaney, Sean 
ORCID: https://orcid.org/0000-0002-8914-2659, Mayfield, James, Oard, Douglas and Miller, Scott
  
(2025)
  
MURR: Model Updating with Regularized Replay for Searching a Document Stream.
    
    In: 47th European Conference on Information Retrieval (ECIR 2025), Lucca, Italy, 06-10 Apr 2025,
     pp. 85-100. 
     ISBN 9783031887086
    (doi: 10.1007/978-3-031-88708-6_6)
  
  
    
    Pezzuti, Francesca, Mueller, Ariane, MacAvaney, Sean ORCID: https://orcid.org/0000-0002-8914-2659 and Tonellotto, Nicola 
ORCID: https://orcid.org/0000-0002-7427-1001
  
(2025)
  
Document Quality Scoring for Web Crawling.
    
    In: 2nd International Workshop on Open Web Search (WOWS), Lucca, Italy, 6-10 April 2025,
    
    
    
  
   (Accepted for Publication)
    
    Petrov, Aleksandr V., Macdonald, Craig ORCID: https://orcid.org/0000-0003-3143-279X and Tonellotto, Nicola 
ORCID: https://orcid.org/0000-0002-7427-1001
  
(2024)
  
Efficient Inference of Sub-Item Id-based Sequential Recommendation Models with Millions of Items.
    
    In: 18th ACM Conference on Recommender Systems, Bari, Italy, 14-18 Oct 2024,
     pp. 912-917. 
     ISBN 97984007-05052
    (doi: 10.1145/3640457.3688168)
  
  
    
    MacAvaney, Sean ORCID: https://orcid.org/0000-0002-8914-2659 and Tonellotto, Nicola 
ORCID: https://orcid.org/0000-0002-7427-1001
  
(2024)
  
A Reproducibility Study of PLAID.
    
    In: 47th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR 2024), Washington D.C., USA, 14-18 July 2024,
     pp. 1411-1419. 
     ISBN 9798400704314
    (doi: 10.1145/3626772.3657856)
  
  
    
    Acquavia, Antonio, Tonellotto, Nicola ORCID: https://orcid.org/0000-0002-7427-1001 and Macdonald, Craig 
ORCID: https://orcid.org/0000-0003-3143-279X
  
(2023)
  
Static Pruning for Multi-Representation Dense Retrieval.
    
    In: 23rd ACM Symposium on Document Engineering (DocEng'23), Limerick, Ireland, 22-25 Aug 2023,
    
     ISBN 9798400700279
    (doi: 10.1145/3573128.3604896)
  
  
    
    Wang, Xiao, Macdonald, Craig ORCID: https://orcid.org/0000-0003-3143-279X, Tonellotto, Nicola 
ORCID: https://orcid.org/0000-0002-7427-1001 and Ounis, Iadh 
ORCID: https://orcid.org/0000-0003-4701-3223
  
(2023)
  
Reproducibility, Replicability, and Insights into Dense Multi-Representation Retrieval Models: from ColBERT to Col*.
    
    In: 46th International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR23), Taipei, Taiwan, 23-27 July 2023,
     pp. 2552-2561. 
     ISBN 9781450394086
    (doi: 10.1145/3539618.3591916)
  
  
    
    MacAvaney, Sean ORCID: https://orcid.org/0000-0002-8914-2659, Tonellotto, Nicola 
ORCID: https://orcid.org/0000-0002-7427-1001 and Macdonald, Craig 
ORCID: https://orcid.org/0000-0003-3143-279X
  
(2022)
  
Adaptive Re-Ranking with a Corpus Graph.
    
    In: 31st ACM International Conference on Information and Knowledge Management (CIKM '22), Atlanta, Georgia, USA, 17-21 October 2022,
     pp. 1491-1500. 
     ISBN 9781450392365
    (doi: 10.1145/3511808.3557231)
  
  
    
    Dato, Domenico, MacAvaney, Sean ORCID: https://orcid.org/0000-0002-8914-2659, Nardini, Franco Maria, Perego, Raffaele and Tonellotto, Nicola 
ORCID: https://orcid.org/0000-0002-7427-1001
  
(2022)
  
The Istella22 Dataset: Bridging Traditional and Neural Learning to Rank Evaluation.
    
    In: SIGIR 2022: 45th International ACM SIGIR Conference on Research and Development in Information Retrieval, Madrid, Spain, 11-15 Jul 2022,
     pp. 3099-3107. 
     ISBN 9781450387323
    (doi: 10.1145/3477495.3531740)
  
  
    
    Macdonald, Craig ORCID: https://orcid.org/0000-0003-3143-279X, Tonellotto, Nicola 
ORCID: https://orcid.org/0000-0002-7427-1001, MacAvaney, Sean 
ORCID: https://orcid.org/0000-0002-8914-2659 and Ounis, Iadh 
ORCID: https://orcid.org/0000-0003-4701-3223
  
(2021)
  
PyTerrier: Declarative Experimentation in Python from BM25 to Dense Retrieval.
    
    In: 30th ACM International Conference on Information and Knowledge Management, Virtual Event Queensland, Australia, 01-05 Nov 2021,
     pp. 4526-4533. 
     ISBN 9781450384469
    (doi: 10.1145/3459637.3482013)
  
  
    
    Macdonald, Craig ORCID: https://orcid.org/0000-0003-3143-279X and Tonellotto, Nicola 
ORCID: https://orcid.org/0000-0002-7427-1001
  
(2021)
  
On Approximate Nearest Neighbour Selection for Multi-Stage Dense Retrieval.
    
    In: 30th ACM International Conference on Information and Knowledge Management, 01-05 Nov 2021,
     pp. 3318-3322. 
     ISBN 9781450384469
    (doi: 10.1145/3459637.3482156)
  
  
    
    Tonellotto, Nicola ORCID: https://orcid.org/0000-0002-7427-1001 and Macdonald, Craig 
ORCID: https://orcid.org/0000-0003-3143-279X
  
(2021)
  
Query Embedding Pruning for Dense Retrieval.
    
    In: 30th ACM International Conference on Information and Knowledge Management, Virtual Event Queensland, Australia, 01-05 Nov 2021,
     pp. 3453-3457. 
     ISBN 9781450384469
    (doi: 10.1145/3459637.3482162)
  
  
    
    Wang, Xiao, Macdonald, Craig ORCID: https://orcid.org/0000-0003-3143-279X, Tonellotto, Nicola 
ORCID: https://orcid.org/0000-0002-7427-1001 and Ounis, Iadh 
ORCID: https://orcid.org/0000-0003-4701-3223
  
(2021)
  
Pseudo-Relevance Feedback for Multiple Representation Dense Retrieval.
    
    In: 7th ACM SIGIR International Conference on the Theory of Information Retrieval (ICTIR 2021), 11 Jul 2021,
     pp. 297-306. 
     ISBN 9781450386111
    (doi: 10.1145/3471158.3472250)
  
  
    
    Macdonald, Craig ORCID: https://orcid.org/0000-0003-3143-279X, Tonellotto, Nicola 
ORCID: https://orcid.org/0000-0002-7427-1001 and Ounis, Iadh 
ORCID: https://orcid.org/0000-0003-4701-3223
  
(2021)
  
On Single and Multiple Representations in Dense Passage Retrieval.
    
    In: 11th Italian Information Retrieval Workshop (IIR 2021), Bari, Italy, 13-15 Sep 2021,