2023

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ColBERT-PRF: Semantic Pseudo-Relevance Feedback for Dense Passage and Document Retrieval
Xiao Wang | Craig MacDonald | Nicola Tonellotto | Iadh Ounis
2023 Volume 17 Issue 1

2022

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Adaptive Re-Ranking as an Information-Seeking Agent
Sean MacAvaney | Nicola Tonellotto | Craig Macdonald
Proceedings of the CIKM 2022 Workshops co-located with 31st ACM International Conference on Information and Knowledge Management (CIKM 2022), Atlanta, USA, October 17-21, 2022

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Pseudo-Relevance Feedback in the Era of Dense Retrieval
Nicola Tonellotto
Proceedings of the 12th Italian Information Retrieval Workshop 2022, Milan, Italy, June 29-30, 2022

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A Comprehensive Dataset for Modern Learning to Rank Solutions (Abstract)
Domenico Dato | Sean MacAvaney | Franco Maria Nardini | Raffaele Perego | Nicola Tonellotto
Proceedings of the 12th Italian Information Retrieval Workshop 2022, Milan, Italy, June 29-30, 2022

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The Istella22 Dataset: Bridging Traditional and Neural Learning to Rank Evaluation
Domenico Dato | Sean MacAvaney | Franco Maria Nardini | Raffaele Perego | Nicola Tonellotto
SIGIR '22: The 45th International ACM SIGIR Conference on Research and Development in Information Retrieval, Madrid, Spain, July 11 - 15, 2022

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Faster Learned Sparse Retrieval with Guided Traversal
Antonio Mallia | Joel Mackenzie | Torsten Suel | Nicola Tonellotto
SIGIR '22: The 45th International ACM SIGIR Conference on Research and Development in Information Retrieval, Madrid, Spain, July 11 - 15, 2022

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On the Role of Relevance in Natural Language Processing Tasks
Artsiom Sauchuk | James Thorne | Alon Y. Halevy | Nicola Tonellotto | Fabrizio Silvestri
SIGIR '22: The 45th International ACM SIGIR Conference on Research and Development in Information Retrieval, Madrid, Spain, July 11 - 15, 2022

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Adaptive Re-Ranking with a Corpus Graph
Sean MacAvaney | Nicola Tonellotto | Craig Macdonald
Proceedings of the 31st ACM International Conference on Information & Knowledge Management, Atlanta, GA, USA, October 17-21, 2022

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A Dependency-Aware Utterances Permutation Strategy to Improve Conversational Evaluation
Guglielmo Faggioli | Marco Ferrante | Nicola Ferro | Raffaele Perego | Nicola Tonellotto
Advances in Information Retrieval - 44th European Conference on IR Research, ECIR 2022, Stavanger, Norway, April 10-14, 2022, Proceedings, Part I

2021

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Weighting Passages Enhances Accuracy
Cristina Ioana Muntean | Franco Maria Nardini | Raffaele Perego | Nicola Tonellotto | Ophir Frieder
2021 Volume 39 Issue 2

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Adaptive utterance rewriting for conversational search
Ida Mele | Cristina Ioana Muntean | Franco Maria Nardini | Raffaele Perego | Nicola Tonellotto | Ophir Frieder
2021 Volume 58 Issue 6

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On Single and Multiple Representations in Dense Passage Retrieval
Craig Macdonald | Nicola Tonellotto | Iadh Ounis
Proceedings of the 11th Italian Information Retrieval Workshop 2021, Bari, Italy, September 13-15, 2021

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Pseudo-Relevance Feedback for Multiple Representation Dense Retrieval
Xiao Wang | Craig Macdonald | Nicola Tonellotto | Iadh Ounis
ICTIR '21: The 2021 ACM SIGIR International Conference on the Theory of Information Retrieval, Virtual Event, Canada, July 11, 2021

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Hierarchical Dependence-aware Evaluation Measures for Conversational Search
Guglielmo Faggioli | Marco Ferrante | Nicola Ferro | Raffaele Perego | Nicola Tonellotto
SIGIR '21: The 44th International ACM SIGIR Conference on Research and Development in Information Retrieval, Virtual Event, Canada, July 11-15, 2021

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Learning Passage Impacts for Inverted Indexes
Antonio Mallia | Omar Khattab | Torsten Suel | Nicola Tonellotto
SIGIR '21: The 44th International ACM SIGIR Conference on Research and Development in Information Retrieval, Virtual Event, Canada, July 11-15, 2021

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IR From Bag-of-words to BERT and Beyond through Practical Experiments
Craig Macdonald | Nicola Tonellotto | Sean MacAvaney
CIKM '21: The 30th ACM International Conference on Information and Knowledge Management, Virtual Event, Queensland, Australia, November 1 - 5, 2021

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PyTerrier: Declarative Experimentation in Python from BM25 to Dense Retrieval
Craig Macdonald | Nicola Tonellotto | Sean MacAvaney | Iadh Ounis
CIKM '21: The 30th ACM International Conference on Information and Knowledge Management, Virtual Event, Queensland, Australia, November 1 - 5, 2021

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Query Embedding Pruning for Dense Retrieval
Nicola Tonellotto | Craig Macdonald
CIKM '21: The 30th ACM International Conference on Information and Knowledge Management, Virtual Event, Queensland, Australia, November 1 - 5, 2021

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On Approximate Nearest Neighbour Selection for Multi-Stage Dense Retrieval
Craig Macdonald | Nicola Tonellotto
CIKM '21: The 30th ACM International Conference on Information and Knowledge Management, Virtual Event, Queensland, Australia, November 1 - 5, 2021

2020

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Using an Inverted Index Synopsis for Query Latency and Performance Prediction
Nicola Tonellotto | Craig Macdonald
2020 Volume 38 Issue 3

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Topical result caching in web search engines
Ida Mele | Nicola Tonellotto | Ophir Frieder | Raffaele Perego
2020 Volume 57 Issue 3

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Topical Enrichment of Conversational Search Utterances: Participation of the HPCLab-CNR Team in CAsT 2020
Ida Mele | Cristina Ioana Muntean | Franco Maria Nardini | Raffaele Perego | Nicola Tonellotto
Proceedings of the Twenty-Ninth Text REtrieval Conference, TREC 2020, Virtual Event [Gaithersburg, Maryland, USA], November 16-20, 2020

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Declarative Experimentation in Information Retrieval using PyTerrier
Craig Macdonald | Nicola Tonellotto
ICTIR '20: The 2020 ACM SIGIR International Conference on the Theory of Information Retrieval, Virtual Event, Norway, September 14-17, 2020

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Topic Propagation in Conversational Search
Ida Mele | Cristina Ioana Muntean | Franco Maria Nardini | Raffaele Perego | Nicola Tonellotto | Ophir Frieder
Proceedings of the 43rd International ACM SIGIR conference on research and development in Information Retrieval, SIGIR 2020, Virtual Event, China, July 25-30, 2020

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Expansion via Prediction of Importance with Contextualization
Sean MacAvaney | Franco Maria Nardini | Raffaele Perego | Nicola Tonellotto | Nazli Goharian | Ophir Frieder
Proceedings of the 43rd International ACM SIGIR conference on research and development in Information Retrieval, SIGIR 2020, Virtual Event, China, July 25-30, 2020

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Training Curricula for Open Domain Answer Re-Ranking
Sean MacAvaney | Franco Maria Nardini | Raffaele Perego | Nicola Tonellotto | Nazli Goharian | Ophir Frieder
Proceedings of the 43rd International ACM SIGIR conference on research and development in Information Retrieval, SIGIR 2020, Virtual Event, China, July 25-30, 2020

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Efficient Document Re-Ranking for Transformers by Precomputing Term Representations
Sean MacAvaney | Franco Maria Nardini | Raffaele Perego | Nicola Tonellotto | Nazli Goharian | Ophir Frieder
Proceedings of the 43rd International ACM SIGIR conference on research and development in Information Retrieval, SIGIR 2020, Virtual Event, China, July 25-30, 2020

2019

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Enhanced News Retrieval: Passages Lead the Way!
Matteo Catena | Ophir Frieder | Cristina Ioana Muntean | Franco Maria Nardini | Raffaele Perego | Nicola Tonellotto
Proceedings of the 42nd International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2019, Paris, France, July 21-25, 2019

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Multiple Query Processing via Logic Function Factoring
Matteo Catena | Nicola Tonellotto
Proceedings of the 42nd International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2019, Paris, France, July 21-25, 2019

2018

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Efficient Query Processing for Scalable Web Search
Nicola Tonellotto | Craig Macdonald | Iadh Ounis
2018 Volume 12 Issue 4-5

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Proceedings of the 9th Italian Information Retrieval Workshop, Rome, Italy, May, 28-30, 2018

Proceedings of the 9th Italian Information Retrieval Workshop, Rome, Italy, May, 28-30, 2018

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Efficient Query Processing Infrastructures: A half-day tutorial at SIGIR 2018
Nicola Tonellotto | Craig Macdonald
The 41st International ACM SIGIR Conference on Research & Development in Information Retrieval, SIGIR 2018, Ann Arbor, MI, USA, July 08-12, 2018

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Efficient Energy Management in Distributed Web Search
Matteo Catena | Ophir Frieder | Nicola Tonellotto
Proceedings of the 27th ACM International Conference on Information and Knowledge Management, CIKM 2018, Torino, Italy, October 22-26, 2018

2017

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Recent Advances in Energy Efficient Query Processing
Matteo Catena | Nicola Tonellotto
Proceedings of the 8th Italian Information Retrieval Workshop, Lugano, Switzerland, June 05-07, 2017

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Upper Bound Approximation for BlockMaxWand
Craig Macdonald | Nicola Tonellotto
Proceedings of the ACM SIGIR International Conference on Theory of Information Retrieval, ICTIR 2017, Amsterdam, The Netherlands, October 1-4, 2017

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Faster BlockMax WAND with Variable-sized Blocks
Antonio Mallia | Giuseppe Ottaviano | Elia Porciani | Nicola Tonellotto | Rossano Venturini
Proceedings of the 40th International ACM SIGIR Conference on Research and Development in Information Retrieval, Shinjuku, Tokyo, Japan, August 7-11, 2017

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Efficient & Effective Selective Query Rewriting with Efficiency Predictions
Craig MacDonald | Nicola Tonellotto | Iadh Ounis
Proceedings of the 40th International ACM SIGIR Conference on Research and Development in Information Retrieval, Shinjuku, Tokyo, Japan, August 7-11, 2017

2016

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Fast Ranking with Additive Ensembles of Oblivious and Non-Oblivious Regression Trees
Domenico Dato | Claudio Lucchese | Franco Maria Nardini | Salvatore Orlando | Raffaele Perego | Nicola Tonellotto | Rossano Venturini
2016 Volume 35 Issue 2

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Quality versus efficiency in document scoring with learning-to-rank models
Gabriele Capannini | Claudio Lucchese | Franco Maria Nardini | Salvatore Orlando | Raffaele Perego | Nicola Tonellotto
2016 Volume 52 Issue 6

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Speeding-up Document Scoring with Tree Ensembles using CPU SIMD Extensions
Claudio Lucchese | Franco Maria Nardini | Salvatore Orlando | Raffaele Perego | Nicola Tonellotto | Rossano Venturini
Proceedings of the 7th Italian Information Retrieval Workshop, Venezia, Italy, May 30-31, 2016

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GPU-based Parallelization of QuickScorer to Speed-up Document Ranking with Tree Ensembles
Francesco Lettich | Claudio Lucchese | Franco Maria Nardini | Salvatore Orlando | Raffaele Perego | Nicola Tonellotto | Rossano Venturini
Proceedings of the 7th Italian Information Retrieval Workshop, Venezia, Italy, May 30-31, 2016

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Exploiting CPU SIMD Extensions to Speed-up Document Scoring with Tree Ensembles
Claudio Lucchese | Franco Maria Nardini | Salvatore Orlando | Raffaele Perego | Nicola Tonellotto | Rossano Venturini
Proceedings of the 39th International ACM SIGIR conference on Research and Development in Information Retrieval, SIGIR 2016, Pisa, Italy, July 17-21, 2016

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Exploiting Green Energy to Reduce the Operational Costs of Multi-Center Web Search Engines
Roi Blanco | Matteo Catena | Nicola Tonellotto
Proceedings of the 25th International Conference on World Wide Web, WWW 2016, Montreal, Canada, April 11 - 15, 2016

2015

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Proceedings of the 2015 Workshop on Large-Scale and Distributed System for Information Retrieval, LSDS-IR 2015, Melbourne, Australia, October 23, 2015

Proceedings of the 2015 Workshop on Large-Scale and Distributed System for Information Retrieval, LSDS-IR 2015, Melbourne, Australia, October 23, 2015

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QuickRank: a C++ Suite of Learning to Rank Algorithms
Gabriele Capannini | Domenico Dato | Claudio Lucchese | Monica Mori | Franco Maria Nardini | Salvatore Orlando | Raffaele Perego | Nicola Tonellotto
Proceedings of the 6th Italian Information Retrieval Workshop, Cagliari, Italy, May 25-26, 2015

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Entity Linking on Philosophical Documents
Diego Ceccarelli | Alberto De Francesco | Raffaele Perego | Marco Segala | Nicola Tonellotto | Salvatore Trani
Proceedings of the 6th Italian Information Retrieval Workshop, Cagliari, Italy, May 25-26, 2015

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A Study on Query Energy Consumption in Web Search Engines
Matteo Catena | Nicola Tonellotto
Proceedings of the 6th Italian Information Retrieval Workshop, Cagliari, Italy, May 25-26, 2015

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Optimal Space-time Tradeoffs for Inverted Indexes
Giuseppe Ottaviano | Nicola Tonellotto | Rossano Venturini
Proceedings of the Eighth ACM International Conference on Web Search and Data Mining, WSDM 2015, Shanghai, China, February 2-6, 2015

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Speeding up Document Ranking with Rank-based Features
Claudio Lucchese | Franco Maria Nardini | Salvatore Orlando | Raffaele Perego | Nicola Tonellotto
Proceedings of the 38th International ACM SIGIR Conference on Research and Development in Information Retrieval, Santiago, Chile, August 9-13, 2015

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Load-sensitive CPU Power Management for Web Search Engines
Matteo Catena | Craig Macdonald | Nicola Tonellotto
Proceedings of the 38th International ACM SIGIR Conference on Research and Development in Information Retrieval, Santiago, Chile, August 9-13, 2015

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QuickScorer: A Fast Algorithm to Rank Documents with Additive Ensembles of Regression Trees
Claudio Lucchese | Franco Maria Nardini | Salvatore Orlando | Raffaele Perego | Nicola Tonellotto | Rossano Venturini
Proceedings of the 38th International ACM SIGIR Conference on Research and Development in Information Retrieval, Santiago, Chile, August 9-13, 2015

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LSDS-IR'15: 2015 Workshop on Large-Scale and Distributed Systems for Information Retrieval
Ismail Sengor Altingovde | Berkant Barla Cambazoglu | Nicola Tonellotto
Proceedings of the 24th ACM International Conference on Information and Knowledge Management, CIKM 2015, Melbourne, VIC, Australia, October 19 - 23, 2015

2014

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Workshop on large-scale and distributed systems for information retrieval (LSDS-IR 2014)
Ismail Sengör Altingövde | Berkant Barla Cambazoglu | Craig Macdonald | Nicola Tonellotto
Seventh ACM International Conference on Web Search and Data Mining, WSDM 2014, New York, NY, USA, February 24-28, 2014

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A self-adapting latency/power tradeoff model for replicated search engines
Ana Freire | Craig Macdonald | Nicola Tonellotto | Iadh Ounis | Fidel Cacheda
Seventh ACM International Conference on Web Search and Data Mining, WSDM 2014, New York, NY, USA, February 24-28, 2014

2013

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Query Processing in Highly-Loaded Search Engines
Daniele Broccolo | Craig Macdonald | Salvatore Orlando | Iadh Ounis | Raffaele Perego | Fabrizio Silvestri | Nicola Tonellotto
String Processing and Information Retrieval - 20th International Symposium, SPIRE 2013, Jerusalem, Israel, October 7-9, 2013, Proceedings

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Workshop on large-scale and distributed systems for information retrieval (LSDS-IR 2013)
Nicola Tonellotto | Craig Macdonald | Ismail Sengör Altingövde
Sixth ACM International Conference on Web Search and Data Mining, WSDM 2013, Rome, Italy, February 4-8, 2013

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Efficient and effective retrieval using selective pruning
Nicola Tonellotto | Craig Macdonald | Iadh Ounis
Sixth ACM International Conference on Web Search and Data Mining, WSDM 2013, Rome, Italy, February 4-8, 2013

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Load-sensitive selective pruning for distributed search
Daniele Broccolo | Craig Macdonald | Salvatore Orlando | Iadh Ounis | Raffaele Perego | Fabrizio Silvestri | Nicola Tonellotto
22nd ACM International Conference on Information and Knowledge Management, CIKM'13, San Francisco, CA, USA, October 27 - November 1, 2013

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Hybrid Query Scheduling for a Replicated Search Engine
Ana Freire | Craig Macdonald | Nicola Tonellotto | Iadh Ounis | Fidel Cacheda
Advances in Information Retrieval - 35th European Conference on IR Research, ECIR 2013, Moscow, Russia, March 24-27, 2013. Proceedings

2012

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Scheduling queries across replicas
Ana Freire | Craig Macdonald | Nicola Tonellotto | Iadh Ounis | Fidel Cacheda
The 35th International ACM SIGIR conference on research and development in Information Retrieval, SIGIR '12, Portland, OR, USA, August 12-16, 2012

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Effect of dynamic pruning safety on learning to rank effectiveness
Craig Macdonald | Nicola Tonellotto | Iadh Ounis
The 35th International ACM SIGIR conference on research and development in Information Retrieval, SIGIR '12, Portland, OR, USA, August 12-16, 2012

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Learning to predict response times for online query scheduling
Craig Macdonald | Nicola Tonellotto | Iadh Ounis
The 35th International ACM SIGIR conference on research and development in Information Retrieval, SIGIR '12, Portland, OR, USA, August 12-16, 2012

2011

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Upper-bound approximations for dynamic pruning
Craig Macdonald | Iadh Ounis | Nicola Tonellotto
2011 Volume 29 Issue 4

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On Upper Bounds for Dynamic Pruning
Craig Macdonald | Nicola Tonellotto | Iadh Ounis
Advances in Information Retrieval Theory - Third International Conference, ICTIR 2011, Bertinoro, Italy, September 12-14, 2011. Proceedings

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Effect of different docid orderings on dynamic pruning retrieval strategies
Nicola Tonellotto | Craig Macdonald | Iadh Ounis
Proceeding of the 34th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2011, Beijing, China, July 25-29, 2011

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Representing Document Lengths with Identifiers
Raffaele Perego | Fabrizio Silvestri | Nicola Tonellotto
Advances in Information Retrieval - 33rd European Conference on IR Research, ECIR 2011, Dublin, Ireland, April 18-21, 2011. Proceedings

2010

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Efficient Dynamic Pruning with Proximity Support
Nicola Tonellotto | Craig Macdonald | Iadh Ounis
Proceedings of the 8th Workshop on Large-Scale Distributed Systems for Information Retrieval, Geneva, Switzerland, July 23, 2010

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