Daniel Lemire

I have two sons: Lohan and Louka.

Full professor, UQAM
Adjunct Professor, University of New Brunswick

I am a professor at the University of Quebec at Montreal (UQAM) where I teach Computer Science. Prior to joining the University of Quebec, I was a researcher at the National Research Council of Canada (NRC).

As a researcher, I'm interested in Multidimensional Databases (OLAP), Data Mining over Text and Time Series and Collaborative Filtering (see inDiscover).

My research is supported by NSERC discovery grant number 261437.

In 2007, with Owen Kaser, I wrote the first Tag-Cloud Drawing paper.
In 2006, I showed that we can compute the running maximum-minimum using three comparisons or less per element. The algorithm is simple and practical.
In 2005, with Anna Maclachlan, I designed the rating-based collaborative filtering algorithm Slope One now used in several software libraries such as Apache Mahout, Taste, and Vogoo, in several Web sites (inDiscover, hitflip) and Web tools (Drupal).

Keywords: Collaborative Data Management, Database Theory, Bitmap Indexes, Data Warehousing, Multidimensional Databases (OLAP), Data Mining, Time Series, Collaborative Filtering, Information Retrieval. - c.v. (pdf)

Collaborators

I am a member of the LICEF Research Center (Cognitive Computer Science). My Erdös number is 4.

Recent collaborators (excluding students and fellows):

Sylvie Noël (Communications Research Centre)
Yuhong Yan (Concordia University)
Owen Kaser (UNB)
Martin Brooks (NRC)
Dan Kucerovsky (UNB)
Robert Godin (UQAM)
Will Fitzgerald (Microsoft)
Harold Boley (NRC)
Anna Maclachlan (Idilia Inc.)

Journals

I am an associate editor-in-chief of the Journal of Emerging Technologies in Web Intelligence (JETWI).
I am on the editorial board of the Atlantic Electronic Journal of Mathematics.
I am one of the editors of the Journal of Computers.

Recent Workshop, Special Issue and Conference Organization

We organize a special issue on Learning and the Social Web (http://socialwebjetwi.info/) for the Journal of Emerging Technologies in Web Intelligence. Deadline: November 27, 2009.
Steering chair of the Second Canadian Semantic Web Working Symposium 2009 (CSWWS 2009)
Second Netflix-KDD Workshop on Large-Scale Recommender Systems and the Netflix Prize Competition (KDD 2008)

Recent International Conference Program Committees

International Conference on Database and Expert Systems Applications (DEXA) 2009
ACM Conference on Recommender Systems (ACM RecSys) 2009
International Conference on Enterprise Information Systems (ICEIS) 2009
Journées francophones sur les Entrepôts de Données et l’Analyse en ligne (EDA) 2009
Conference on Web Information Systems and Technologies (WEBIST) 2007-2009
Association for the Advancement of Artificial Intelligence (AAAI) 2008
North American Computing and Philosophy Conference (NA-CAP) 2008-2009

Quick Links

Current post-doctoral fellows and graduate students

I supervise graduate students at the Université de Québec à Montreal (UQAM) in the Computer Science Ph.D. and Cognitive Computer Science Ph.D. programs, and co-supervise students at the University of New Brunswick.

I co-supervise Hazel Webb with Owen Kaser in a Ph.D. in Computer Science. There is a video of Hazel on Google Video.
I supervise Wilfrid Blais with Jean Robillard in a Ph.D. in Cognitive Computer Science.
I co-supervise Badis Merdaoui with Richard Hotte in a Ph.D. in Cognitive Computer Science.

Teaching (current)

A Computer Science perspective on Data Warehousing. Upcoming course (2010).
INF 6104 - Information Retrieval and the Web. A graduate course on Information Retrieval.
INF 6460 - Information Retrieval and Filtering. This course is a solid survey of Information Retrieval, from vector models to PageRank and including collaborative filtering (in French).

Contact

Daniel Lemire, professor, LICEF Research Center, Pavillon Saint-Urbain, Université du Québec à Montréal (UQAM), 100 Sherbrooke West, Montreal (Quebec), H2X 3P2 Canada
Office SU-2605, Phone: (514) 987-3000 ext. 2835 (please use email), Email: lemire (at) acm (dot) org

Google map, map and picture of the building (UQAM)