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Karl Rexer
  • Male
  • Winchester, MA
  • United States
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Latest Activity

Karl Rexer commented on Vincent Granville's blog post 2013 Data Miner Survey Highlights
"Thank you for removing the full PDF, Vincent.  We are super-excited about everyone blogging and communicating about the results of our 2013 Data Miner Survey.  We just want to be the ones to distribute the full PDF reports.…"
Oct 13, 2013
Karl Rexer added a discussion to the group Data Mining Competitions
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DMA and Hearst announce 2011 predictive modeling competition ($25,000 prize)

This looks interesting. It's a predictive modeling competition with a $25,000 first prize.Last year >700 teams competed -- Here's a link to more info about last year's competition and the winners: http://www.hearstchallenge.com/index.php?id=2See More
May 4, 2011
Karl Rexer commented on Vincent Granville's blog post The new generation of data miners, statisticians and scientists
"Nice post.  I think this is also related to new trends in doing science these days.  I see more cross-disiplinary and results-oriented thinking.  E.g., it's not unusual for a young person working in biological research to look…"
Apr 25, 2011
Karl Rexer commented on Vincent Granville's blog post 5th Annual Data Mining Survey
"Tom -- No, we did not separately analyze the Canadian responses to last year's survey.  Overall there were 735 participants in 2010, and 25 identified themselves as being from Canada. -- Karl"
Apr 25, 2011
Karl Rexer replied to Vincent Granville's discussion R / Splus / SPSS Clementine / JMP / Salford Systems memory limitations
"Ashok --      It sounds like what you're doing is correct.  Fraud can sometimes be tricky due to the low frequency of fraud (hopefully your business has only a handful of fraudulent customers).        Am…"
Jan 4, 2011
Karl Rexer commented on Vincent Granville's blog post Analytics skills in demand – and analytics pros demanding top salaries
"Good point about the Health Care and Tax sectors being tighter in their data restrictions and being less likely to hire outside consultants. I generally agree, but in some situations outside staff are still used -- for one of our consulting gigs we…"
Sep 23, 2010
Karl Rexer commented on Vincent Granville's blog post Analytics skills in demand – and analytics pros demanding top salaries
"Yes, we see an explosion of interest in advanced analytics. We see it in the companies that contact us for analytic consulting (www.RexerAnalytics.com), and we also see it in our annual survey of data miners. The challenging economic environment is…"
Sep 23, 2010
Karl Rexer replied to Bhaswati Sengupta's discussion Detrmining the BEST decision tree.
"A couple quick points: --------- Do a quick google search on "Gains table", "Gains chart", and "lift chart" and you'll find some good info about comparing how good various models are. E.g., here is one link for…"
Sep 23, 2010
Karl Rexer replied to Vincent Granville's discussion [Poll] Which data mining/analytic tools you used in the past 12 months for a real project? in the group Polls
"I like the ideas of regional breakdowns and seeing how the larger member group wold respond. Great ideas. Yes, I agree with you, our Rexer Analytics Data Miner Survey sample is probably somewhat different. I agree with the sample characteristics…"
Jun 7, 2010
Karl Rexer replied to Vincent Granville's discussion [Poll] Which data mining/analytic tools you used in the past 12 months for a real project? in the group Polls
"I like polls, Vincent, but I'm sorry to say that I think there's been a mistake. When I follow your link, the top 10 items I see in the KDnuggets poll are: - 38% - Rapidminer - 30% - R - 24% - Excel - 19% - KNIME - 18% - Your own code -…"
Jun 6, 2010
Karl Rexer replied to Vincent Granville's discussion [Poll] Which data mining/analytic tools you used in the past 12 months for a real project? in the group Polls
"How were the 8 named tools selected to be the response items in this poll? It seems odd to me that some of the tools that rank highest in other polls and surveys are not listed by name here (e.g., SPSS, SAS, Weka, and Clementine/Modeler).…"
Jun 6, 2010
Karl Rexer replied to Vincent Granville's discussion R / Splus / SPSS Clementine / JMP / Salford Systems memory limitations
"Oracle Data Mining (ODM) can handle huge datasets. It can be run on a variety of hardware, or on the Amazon cloud. There are no memory limits. ODM is just an option on the database (and is often installed by default). It has 12 data mining…"
May 17, 2010
Karl Rexer is now a member of AnalyticBridge
Feb 9, 2009

Profile Information

Short Bio:
President of Rexer Analytics, a small Boston-based analytic CRM and data mining consulting firm.
My Website or LinkedIn Profile (URL):
http://www.RexerAnalytics.com
Field of Expertise:
Business Analytics, Predictive Modeling, Data Mining, Statistical Consulting
Years of Experience in Analytical Role:
20
Professional Status:
Manager, Consultant
Interests:
Networking, New Venture, Other
What is your Favorite Data Mining or Analytical Website?
http://www.kdnuggets.com
What Other Analytical Website do you Recommend?
http://www.RexerAnalytics.com
Your Company:
Rexer Analytics
Industry:
Analytic Consulting
How did you find out about AnalyticBridge?
email from friend

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