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Rexer Analytics

4th Annual Data Miner Survey
– 2010 Survey Summary Report –

For more information contact
Karl Rexer, PhD krexer@RexerAnalytics.com www.RexerAnalytics.com

Outline
• Overview & Key Findings
• Where & How Data Miners Work
• What’s Important to Data Miners
• Data Mining Tools: Usage & Satisfaction
• Overcoming Challenges & Optimism about the Future
• Appendix: Where do Data Miners Come From?
• Appendix: Rexer Analytics

© 2011 Rexer Analytics

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Overview & Key Findings

© 2011 Rexer Analytics

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2010 Data Miner Survey: Overview
Vendors

Corporate

• Fourth annual survey
NGO / Gov’t

• 50 questions
• Data collected online in early 2010

Academics
Consultants

• 10,000+ invitations emailed, plus promoted by newsgroups, vendors, and bloggers

• Respondents:

735 data miners from
60 countries

Note: Data from tool vendors (companies making data mining software) was excluded from many analyses.
© 2011 Rexer Analytics

Central & South
America (4%)
• Columbia 2%
• Brazil 1%
Asia Pacific
• India 4%
• Australia 3%
• China 2%

Middle East & Africa (3%)
• Israel 1%
• Turkey 1%
North America
• USA 40%
• Canada 4%

Europe
• Germany 7%
• UK 5%
• France 4%
• Poland 4%
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Key Findings
• FIELDS & GOALS: Data miners work in a diverse set of fields. CRM / Marketing has been the #1 field in each of the past four years. Fittingly, “improving the understanding of customers”, “retaining customers” and other CRM goals are also the goals identified by the most data miners surveyed.

• ALGORITHMS: Decision trees, regression, and cluster analysis continue to form a triad of core

algorithms for most data miners. However, a wide variety of algorithms are being used. This year, for the first time, the survey asked about Ensemble Models, and 22% of data miners

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