Daniel Lemire is a computer science professor at the Université du Québec (TELUQ). He has also been a research officer at the National Research Council of Canada and an entrepreneur. He has written over 50 peer-reviewed publications, including more than 30 journal articles. He has held competitive research grants for the last 15 years. He serves on the program committees of leading computer science conferences (e.g., ACM CIKM, WWW, ACM WSDM, ACM SIGIR, ACM RecSys).

He is also an adjunct professor at UQAM within the computer science departement where he is a member of the LATECE laboratory. He is also an adjunct professor at the University of New Brunswick within the computer science departement.

He works regularly on open source software libraries. He programs regularly in C, C++, Java, JavaScript, Python, Swift and Go. He works primarily in an open-source setting. You can find his software in Git, Apache Hive, Druid, Apache Kylin, Netflix Atlas, LinkedIn Pivot and so forth. In 2012, he was rewarded by the Google Open Source Peer Bonus Program.

He is a long-time social media user: his blog has thousands of readers and was featured on slashdot, reddit and hacker news. He was one of the first Twitter users: @lemire.

You can find my work on arXiv, on Google Scholar, on DBLP, on the ACM Portal, on R Libre and elsewhere.

• Daniel Lemire, Gregory Ssi-Yan-Kai, Owen Kaser
  Consistently faster and smaller compressed bitmaps with Roaring
  Software: Practice and Experience Volume 46, Issue 11, pages 1547-1569, November 2016

  Details PDF Code Project

• Daniel Lemire, Nathan Kurz, Leonid Boytsov
  SIMD Compression and the Intersection of Sorted Integers
  Software: Practice and Experience 46 (6), 2016

  Details PDF Code

• Daniel Lemire, Leonid Boytsov
  Decoding billions of integers per second through vectorization
  Software: Practice & Experience 45 (1), 2015

  Details PDF Code

• Xiaodan Zhu, Peter Turney, Daniel Lemire, Andre Vellino
  Measuring academic influence: Not all citations are equal
  Journal of the Association for Information Science and Technology 66 (2), 2015

  Details PDF Dataset

• Daniel Lemire, Owen Kaser, Kamel Aouiche
  Sorting improves word-aligned bitmap indexes
  Data & Knowledge Engineering 69 (1), 2010

  Details PDF Code

• Daniel Lemire
  Faster retrieval with a two-pass dynamic-time-warping lower bound
  Pattern recognition 42 (9), 2009

  Details PDF Code

• Owen Kaser, Daniel Lemire
  Tag-Cloud Drawing: Algorithms for Cloud Visualization
  Tagging and Metadata for Social Information Organization (WWW 2007)

  Details PDF Slides Code Dataset

• Daniel Lemire, Anna Maclachlan
  Slope One Predictors for Online Rating-Based Collaborative Filtering
  In SIAM Data Mining (SDM 2005), Newport Beach, California, April 21-23, 2005

  Details PDF

• Engineering Fast Indexes for Big Data Applications

  Tue, Feb 7, 2017, Spark Summit East 2017

• Engineering Fast Indexes for Big Data Applications (Deep Dive)

  Tue, Feb 7, 2017, Spark Summit East 2017

I supervise graduate students at TÉLUQ et at UQAM. I also co-supervise students the University of New Brunswick, at the École Polytechnique and at Concordia University.

Recent graduates:

• Shany Carle (M.Sc., 2017);
• Joseph Tumusenge (M.Sc., 2016);
• Samy Chambi (Ph.D., 2016, with Robert Godin);
• Jing Li (Ph.D., 2016, with Yuhong Yan);
• Claude Corriolan (M.Sc., 2016);
• Hazel Webb (Ph.D., 2010, with Owen Kaser).

I’m recruiting graduate students and postdoctoral fellows for my lab. If you love writing crazily fast software and want to come to Montreal, drop me a line. Link to an impressive GitHub profile is an asset.

I teach primarily in French and online since 2004.

Undergraduate courses:

• INF6450: Gestion de l’information avec XML
• INF6460: Recherche et filtrage d’informations
• INF9004: Informatique des entrepôts de données

Graduate courses:

• INF6104: Recherche d’informations et Web
• INF6408: Informatique de l’analyse multidimensionnelle

• Resume (1 page, PDF)
• English c.v. (PDF)
• French c.v. (PDF)

• [email protected]
• University of Quebec (TELUQ), 5800 Saint-Denis, Office 1105, Montreal (Quebec) H2S 3L5 Canada
• email for appointment