2023

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Detecting Stance of Authorities Towards Rumors in Arabic Tweets: A Preliminary Study
Fatima Haouari | Tamer Elsayed
Advances in Information Retrieval - 45th European Conference on Information Retrieval, ECIR 2023, Dublin, Ireland, April 2-6, 2023, Proceedings, Part II

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The CLEF-2023 CheckThat! Lab: Checkworthiness, Subjectivity, Political Bias, Factuality, and Authority
Alberto Barrón-Cedeño | Firoj Alam | Tommaso Caselli | Giovanni Da San Martino | Tamer Elsayed | Andrea Galassi | Fatima Haouari | Federico Ruggeri | Julia Maria Struß | Rabindra Nath Nandi | Gullal S. Cheema | Dilshod Azizov | Preslav Nakov
Advances in Information Retrieval - 45th European Conference on Information Retrieval, ECIR 2023, Dublin, Ireland, April 2-6, 2023, Proceedings, Part III

2022

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Arabic machine reading comprehension on the Holy Qur'an using CL-AraBERT
Rana Malhas | Tamer Elsayed
2022 Volume 59 Issue 6

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Studying effectiveness of Web search for fact checking
Maram Hasanain | Tamer Elsayed
2022 Volume 73 Issue 5

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Did I See It Before? Detecting Previously-Checked Claims over Twitter
Watheq Mansour | Tamer Elsayed | Abdulaziz Alali
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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Overview of the CLEF-2021 CheckThat! Lab on Detecting Check-Worthy Claims, Previously Fact-Checked Claims, and Fake News
Preslav Nakov | Giovanni Da San Martino | Tamer Elsayed | Alberto Barrón-Cedeño | Rubén Míguez | Shaden Shaar | Firoj Alam | Fatima Haouari | Maram Hasanain | Watheq Mansour | Bayan Hamdan | Zien Sheikh Ali | Nikolay Babulkov | Alex Nikolov | Gautam Kishore Shahi | Julia Maria Struß | Thomas Mandl | Mücahid Kutlu | Yavuz Selim Kartal
Experimental IR Meets Multilinguality, Multimodality, and Interaction - 12th International Conference of the CLEF Association, CLEF 2021, Virtual Event, September 21-24, 2021, Proceedings

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Overview of the CLEF-2021 CheckThat! Lab Task 2 on Detecting Previously Fact-Checked Claims in Tweets and Political Debates
Shaden Shaar | Fatima Haouari | Watheq Mansour | Maram Hasanain | Nikolay Babulkov | Firoj Alam | Giovanni Da San Martino | Tamer Elsayed | Preslav Nakov
Proceedings of the Working Notes of CLEF 2021 - Conference and Labs of the Evaluation Forum, Bucharest, Romania, September 21st - to - 24th, 2021

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Overview of the CLEF-2021 CheckThat! Lab Task 1 on Check-Worthiness Estimation in Tweets and Political Debates
Shaden Shaar | Maram Hasanain | Bayan Hamdan | Zien Sheikh Ali | Fatima Haouari | Alex Nikolov | Mücahid Kutlu | Yavuz Selim Kartal | Firoj Alam | Giovanni Da San Martino | Alberto Barrón-Cedeño | Rubén Míguez | Javier Beltrán | Tamer Elsayed | Preslav Nakov
Proceedings of the Working Notes of CLEF 2021 - Conference and Labs of the Evaluation Forum, Bucharest, Romania, September 21st - to - 24th, 2021

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The CLEF-2021 CheckThat! Lab on Detecting Check-Worthy Claims, Previously Fact-Checked Claims, and Fake News
Preslav Nakov | Giovanni Da San Martino | Tamer Elsayed | Alberto Barrón-Cedeño | Rubén Míguez | Shaden Shaar | Firoj Alam | Fatima Haouari | Maram Hasanain | Nikolay Babulkov | Alex Nikolov | Gautam Kishore Shahi | Julia Maria Struß | Thomas Mandl
Advances in Information Retrieval - 43rd European Conference on IR Research, ECIR 2021, Virtual Event, March 28 - April 1, 2021, Proceedings, Part II

2020

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Report on the 2nd ACM SIGIR/SIGKDD Africa school on machine learning for data mining and search
Tanya Y. Berger-Wolf | Ben Carterette | Tamer Elsayed | C. Maria Keet | Fabrizio Sebastiani | Hussein Suleman
2020 Volume 54 Issue 1

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bigIR at TREC 2020: Simple but Deep Retrieval of Passages and Documents
Fatima Haouari | Marwa Essam | Tamer Elsayed
Proceedings of the Twenty-Ninth Text REtrieval Conference, TREC 2020, Virtual Event [Gaithersburg, Maryland, USA], November 16-20, 2020

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HBKU at TREC 2020: Conversational Multi-Stage Retrieval with Pseudo-Relevance Feedback
Haya Al-Thani | Bernard J. Jansen | Tamer Elsayed
Proceedings of the Twenty-Ninth Text REtrieval Conference, TREC 2020, Virtual Event [Gaithersburg, Maryland, USA], November 16-20, 2020

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Efficient Test Collection Construction via Active Learning
Md. Mustafizur Rahman | Mücahid Kutlu | Tamer Elsayed | Matthew Lease
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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ArTest: The First Test Collection for Arabic Web Search with Relevance Rationales
Maram Hasanain | Yassmine Barkallah | Reem Suwaileh | Mücahid Kutlu | Tamer Elsayed
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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Finding the Best of Both Worlds: Faster and More Robust Top-k Document Retrieval
Omar Khattab | Mohammad Hammoud | Tamer Elsayed
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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Why is That a Background Article: A Qualitative Analysis of Relevance for News Background Linking
Marwa Essam | Tamer Elsayed
CIKM '20: The 29th ACM International Conference on Information and Knowledge Management, Virtual Event, Ireland, October 19-23, 2020

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Overview of CheckThat! 2020: Automatic Identification and Verification of Claims in Social Media
Alberto Barrón-Cedeño | Tamer Elsayed | Preslav Nakov | Giovanni Da San Martino | Maram Hasanain | Reem Suwaileh | Fatima Haouari | Nikolay Babulkov | Bayan Hamdan | Alex Nikolov | Shaden Shaar | Zien Sheikh Ali
Experimental IR Meets Multilinguality, Multimodality, and Interaction - 11th International Conference of the CLEF Association, CLEF 2020, Thessaloniki, Greece, September 22-25, 2020, Proceedings

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bigIR at CheckThat! 2020: Multilingual BERT for Ranking Arabic Tweets by Check-worthiness
Maram Hasanain | Tamer Elsayed
Working Notes of CLEF 2020 - Conference and Labs of the Evaluation Forum, Thessaloniki, Greece, September 22-25, 2020

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Overview of CheckThat! 2020i Arabic: Automatic Identification and Verification of Claims in Social Media
Maram Hasanain | Fatima Haouari | Reem Suwaileh | Zien Sheikh Ali | Bayan Hamdan | Tamer Elsayed | Alberto Barrón-Cedeño | Giovanni Da San Martino | Preslav Nakov
Working Notes of CLEF 2020 - Conference and Labs of the Evaluation Forum, Thessaloniki, Greece, September 22-25, 2020

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Overview of CheckThat! 2020 English: Automatic Identification and Verification of Claims in Social Media
Shaden Shaar | Alex Nikolov | Nikolay Babulkov | Firoj Alam | Alberto Barrón-Cedeño | Tamer Elsayed | Maram Hasanain | Reem Suwaileh | Fatima Haouari | Giovanni Da San Martino | Preslav Nakov
Working Notes of CLEF 2020 - Conference and Labs of the Evaluation Forum, Thessaloniki, Greece, September 22-25, 2020

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CheckThat! at CLEF 2020: Enabling the Automatic Identification and Verification of Claims in Social Media
Alberto Barrón-Cedeño | Tamer Elsayed | Preslav Nakov | Giovanni Da San Martino | Maram Hasanain | Reem Suwaileh | Fatima Haouari
Advances in Information Retrieval - 42nd European Conference on IR Research, ECIR 2020, Lisbon, Portugal, April 14-17, 2020, Proceedings, Part II

2019

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bigIR at TREC 2019: Graph-based Analysis for News Background Linking
Marwa Essam | Tamer Elsayed
Proceedings of the Twenty-Eighth Text REtrieval Conference, TREC 2019, Gaithersburg, Maryland, USA, November 13-15, 2019

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Improving Arabic Microblog Retrieval with Distributed Representations
Shahad Alshalan | Raghad Alshalan | Hend S. Al-Khalifa | Reem Suwaileh | Tamer Elsayed
Information Retrieval Technology - 15th Asia Information Retrieval Societies Conference, AIRS 2019, Hong Kong, November 7-9, 2019, Proceedings

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bigIR at CLEF 2019: Automatic Verification of Arabic Claims over the Web
Fatima Haouari | Zien Sheikh Ali | Tamer Elsayed
Working Notes of CLEF 2019 - Conference and Labs of the Evaluation Forum, Lugano, Switzerland, September 9-12, 2019

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Overview of the CLEF-2019 CheckThat! Lab: Automatic Identification and Verification of Claims. Task 2: Evidence and Factuality
Maram Hasanain | Reem Suwaileh | Tamer Elsayed | Alberto Barrón-Cedeño | Preslav Nakov
Working Notes of CLEF 2019 - Conference and Labs of the Evaluation Forum, Lugano, Switzerland, September 9-12, 2019

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Overview of the CLEF-2019 CheckThat! Lab: Automatic Identification and Verification of Claims
Tamer Elsayed | Preslav Nakov | Alberto Barrón-Cedeño | Maram Hasanain | Reem Suwaileh | Giovanni Da San Martino | Pepa Atanasova
Experimental IR Meets Multilinguality, Multimodality, and Interaction - 10th International Conference of the CLEF Association, CLEF 2019, Lugano, Switzerland, September 9-12, 2019, Proceedings

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CheckThat! at CLEF 2019: Automatic Identification and Verification of Claims
Tamer Elsayed | Preslav Nakov | Alberto Barrón-Cedeño | Maram Hasanain | Reem Suwaileh | Giovanni Da San Martino | Pepa Atanasova
Advances in Information Retrieval - 41st European Conference on IR Research, ECIR 2019, Cologne, Germany, April 14-18, 2019, Proceedings, Part II

2018

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EveTAR: building a large-scale multi-task test collection over Arabic tweets
Maram Hasanain | Reem Suwaileh | Tamer Elsayed | Mücahid Kutlu | Hind Almerekhi
2018 Volume 21 Issue 4

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Intelligent topic selection for low-cost information retrieval evaluation: A New perspective on deep vs. shallow judging
Mücahid Kutlu | Tamer Elsayed | Matthew Lease
2018 Volume 54 Issue 1

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BroDyn'18: Workshop on Analysis of Broad Dynamic Topics over Social Media
Tamer Elsayed | Walid Magdy | Mücahid Kutlu | Maram Hasanain | Reem Suwaileh
Proceedings of the First International Workshop on Analysis of Broad Dynamic Topics over Social Media (BroDyn 2018) co-located with the 40th European Conference on Information Retrieval (ECIR 2018), Grenoble, France, March 26, 2018

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Proceedings of the First International Workshop on Analysis of Broad Dynamic Topics over Social Media (BroDyn 2018) co-located with the 40th European Conference on Information Retrieval (ECIR 2018), Grenoble, France, March 26, 2018

Proceedings of the First International Workshop on Analysis of Broad Dynamic Topics over Social Media (BroDyn 2018) co-located with the 40th European Conference on Information Retrieval (ECIR 2018), Grenoble, France, March 26, 2018

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Crowd vs. Expert: What Can Relevance Judgment Rationales Teach Us About Assessor Disagreement?
Mücahid Kutlu | Tyler McDonnell | Yassmine Barkallah | Tamer Elsayed | Matthew Lease
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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Re-ranking Web Search Results for Better Fact-Checking: A Preliminary Study
Khaled Yasser | Mücahid Kutlu | Tamer Elsayed
Proceedings of the 27th ACM International Conference on Information and Knowledge Management, CIKM 2018, Torino, Italy, October 22-26, 2018

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When Rank Order Isn't Enough: New Statistical-Significance-Aware Correlation Measures
Mücahid Kutlu | Tamer Elsayed | Maram Hasanain | Matthew Lease
Proceedings of the 27th ACM International Conference on Information and Knowledge Management, CIKM 2018, Torino, Italy, October 22-26, 2018

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bigIR at CLEF 2018: Detection and Verification of Check-Worthy Political Claims
Khaled Yasser | Mücahid Kutlu | Tamer Elsayed
Working Notes of CLEF 2018 - Conference and Labs of the Evaluation Forum, Avignon, France, September 10-14, 2018

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Overview of the CLEF-2018 CheckThat! Lab on Automatic Identification and Verification of Political Claims. Task 2: Factuality
Alberto Barrón-Cedeño | Tamer Elsayed | Reem Suwaileh | Lluís Màrquez | Pepa Atanasova | Wajdi Zaghouani | Spas Kyuchukov | Giovanni Da San Martino | Preslav Nakov
Working Notes of CLEF 2018 - Conference and Labs of the Evaluation Forum, Avignon, France, September 10-14, 2018

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Overview of the CLEF-2018 CheckThat! Lab on Automatic Identification and Verification of Political Claims. Task 1: Check-Worthiness
Pepa Atanasova | Lluís Màrquez | Alberto Barrón-Cedeño | Tamer Elsayed | Reem Suwaileh | Wajdi Zaghouani | Spas Kyuchukov | Giovanni Da San Martino | Preslav Nakov
Working Notes of CLEF 2018 - Conference and Labs of the Evaluation Forum, Avignon, France, September 10-14, 2018

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Overview of the CLEF-2018 CheckThat! Lab on Automatic Identification and Verification of Political Claims
Preslav Nakov | Alberto Barrón-Cedeño | Tamer Elsayed | Reem Suwaileh | Lluís Màrquez | Wajdi Zaghouani | Pepa Atanasova | Spas Kyuchukov | Giovanni Da San Martino
Experimental IR Meets Multilinguality, Multimodality, and Interaction - 9th International Conference of the CLEF Association, CLEF 2018, Avignon, France, September 10-14, 2018, Proceedings

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Mix and Match: Collaborative Expert-Crowd Judging for Building Test Collections Accurately and Affordably
Mücahid Kutlu | Tyler McDonnell | Aashish Sheshadri | Tamer Elsayed | Matthew Lease
Proceedings of the First Biennial Conference on Design of Experimental Search & Information Retrieval Systems, Bertinoro, Italy, August 28-31, 2018

2017

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Query performance prediction for microblog search
Maram Hasanain | Tamer Elsayed
2017 Volume 53 Issue 6

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Exploiting Live Feedback for Tweet Real-time Push Notifications
Reem Suwaileh | Tamer Elsayed
Proceedings of The Twenty-Sixth Text REtrieval Conference, TREC 2017, Gaithersburg, Maryland, USA, November 15-17, 2017

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QweetFinder: Real-Time Finding and Filtering of Question Tweets
Ameer Albahem | Maram Hasanain | Marwan Torki | Tamer Elsayed
Advances in Information Retrieval - 39th European Conference on IR Research, ECIR 2017, Aberdeen, UK, April 8-13, 2017, Proceedings

2016

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Unsupervised adaptive microblog filtering for broad dynamic topics
Walid Magdy | Tamer Elsayed
2016 Volume 52 Issue 4

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Real, Live, and Concise: Answering Open-Domain Questions with Word Embedding and Summarization
Rana Malhas | Marwan Torki | Rahma Ali | Tamer Elsayed | Evi Yulianti
Proceedings of The Twenty-Fifth Text REtrieval Conference, TREC 2016, Gaithersburg, Maryland, USA, November 15-18, 2016

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Light-weight, Conservative, yet Effective: Scalable Real-time Tweet Summarization
Reem Suwaileh | Maram Hasanain | Tamer Elsayed
Proceedings of The Twenty-Fifth Text REtrieval Conference, TREC 2016, Gaithersburg, Maryland, USA, November 15-18, 2016

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EveTAR: A New Test Collection for Event Detection in Arabic Tweets
Hind Almerekhi | Maram Hasanain | Tamer Elsayed
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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ArabicWeb16: A New Crawl for Today's Arabic Web
Reem Suwaileh | Mücahid Kutlu | Nihal Fathima | Tamer Elsayed | Matthew Lease
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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On the Evaluation of Tweet Timeline Generation Task
Walid Magdy | Tamer Elsayed | Maram Hasanain
Advances in Information Retrieval - 38th European Conference on IR Research, ECIR 2016, Padua, Italy, March 20-23, 2016. Proceedings

2015

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QU at TREC-2015: Building Real-Time Systems for Tweet Filtering and Question Answering
Reem Suwaileh | Maram Hasanain | Marwan Torki | Tamer Elsayed
Proceedings of The Twenty-Fourth Text REtrieval Conference, TREC 2015, Gaithersburg, Maryland, USA, November 17-20, 2015

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Improving Tweet Timeline Generation by Predicting Optimal Retrieval Depth
Maram Hasanain | Tamer Elsayed | Walid Magdy
Information Retrieval Technology - 11th Asia Information Retrieval Societies Conference, AIRS 2015, Brisbane, QLD, Australia, December 2-4, 2015. Proceedings

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Detecting Automatically-Generated Arabic Tweets
Hind Almerekhi | Tamer Elsayed
Information Retrieval Technology - 11th Asia Information Retrieval Societies Conference, AIRS 2015, Brisbane, QLD, Australia, December 2-4, 2015. Proceedings

2014

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Query performance prediction for microblog search: a preliminary study
Maram Hasanain | Rana Malhas | Tamer Elsayed
SoMeRA'14, Proceedings of the First ACM International Workshop on Social Media Retrieval and Analysis, July 11, 2014, Gold Coast, Queensland, Australia

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QU at TREC-2014: Online Clustering with Temporal and Topical Expansion for Tweet Timeline Generation
Maram Hasanain | Tamer Elsayed
Proceedings of The Twenty-Third Text REtrieval Conference, TREC 2014, Gaithersburg, Maryland, USA, November 19-21, 2014

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Identification of Answer-Seeking Questions in Arabic Microblogs
Maram Hasanain | Tamer Elsayed | Walid Magdy
Proceedings of the 23rd ACM International Conference on Conference on Information and Knowledge Management, CIKM 2014, Shanghai, China, November 3-7, 2014

2013

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QU at TREC-2013: Expansion Experiments for Microblog Ad hoc Search
Maram Hasanain | Latifa Al-Marri | Tamer Elsayed
Proceedings of The Twenty-Second Text REtrieval Conference, TREC 2013, Gaithersburg, Maryland, USA, November 19-22, 2013

2011

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BEST of KAUST at TREC 2011: Building Effective Search in Twitter
Jinling Jiang | Lailatul Hidayah | Hany E. Ramadan | Tamer Elsayed
Proceedings of The Twentieth Text REtrieval Conference, TREC 2011, Gaithersburg, Maryland, USA, November 15-18, 2011

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Pseudo test collections for learning web search ranking functions
Nima Asadi | Donald Metzler | Tamer Elsayed | Jimmy Lin
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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No free lunch: brute force vs. locality-sensitive hashing for cross-lingual pairwise similarity
Ferhan Türe | Tamer Elsayed | Jimmy Lin
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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When close enough is good enough: approximate positional indexes for efficient ranked retrieval
Tamer Elsayed | Jimmy Lin | Donald Metzler
Proceedings of the 20th ACM Conference on Information and Knowledge Management, CIKM 2011, Glasgow, United Kingdom, October 24-28, 2011

2010

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Making sense of archived e-mail: Exploring the Enron collection with NetLens
Hyunmo Kang | Catherine Plaisant | Tamer Elsayed | Douglas W. Oard
2010 Volume 61 Issue 4

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UMD and USC/ISI: TREC 2010 Web Track Experiments with Ivory
Tamer Elsayed | Nima Asadi | Lidan Wang | Jimmy Lin | Donald Metzler
Proceedings of The Nineteenth Text REtrieval Conference, TREC 2010, Gaithersburg, Maryland, USA, November 16-19, 2010

2009

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Of Ivory and Smurfs: Loxodontan MapReduce Experiments for Web Search
Jimmy Lin | Tamer Elsayed | Lidan Wang | Donald Metzler
Proceedings of The Eighteenth Text REtrieval Conference, TREC 2009, Gaithersburg, Maryland, USA, November 17-20, 2009

2006

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TREC 2006 at Maryland: Blog, Enterprise, Legal and QA Tracks
Douglas W. Oard | Tamer Elsayed | Jianqiang Wang | Yejun Wu | Pengyi Zhang | Eileen G. Abels | Jimmy Lin | Dagobert Soergel
Proceedings of the Fifteenth Text REtrieval Conference, TREC 2006, Gaithersburg, Maryland, USA, November 14-17, 2006

2005

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On evaluation of adaptive topic tracking systems
Tamer Elsayed | Douglas W. Oard
SIGIR 2005: Proceedings of the 28th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, Salvador, Brazil, August 15-19, 2005

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