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Featured Blog Posts – August 2011 Archive (8)

Document Classification - Data mining algorithm

I would bring to your attention my blog:

I hope to trigger discussion on these topics.



Added by Cristian Mesiano on August 30, 2011 at 9:51am — No Comments

Customer churn and Retention

In any business competitors are always looking to grab your customers, and many customers are on the lookout for a better deal. Customer attrition rates range from 7% to 40% annually in various industries. Slowing this customer "churn" rate by as little as 1% can add millions of dollars to any sizable company's bottom line. As it is already known customer acquisition is 4 to 5 times more expensive than to retain them, an effective customer retention strategy is crucial to a company's…

Added by Sandeep Raut on August 28, 2011 at 10:34pm — No Comments

Growing Need for “Big Data” Analysis Spurs Growth in Today’s SD Conference

More than 1,100 experts who analyze “Big Data” are gathered in San Diego today for the industry’s major conference on “Knowledge Discovery and Data Mining” (KDD). The registered attendance is a 22 percent increase over the 900 who attended last year’s KDD conference in Washington D.C.

“In this field, at least, we’re experiencing a recovery,” says Joe Milana, the global head of analytics at Opera Solutions, which was founded as a consulting firm in 2004 and has developed a specialized…


Added by Vincent Granville on August 25, 2011 at 12:01am — No Comments

Hadoop Fatigue -- Alternatives to Hadoop

Hadoop has become the de facto standard in the research and industry uses of small and large-scale MapReduce. Since its inception, an entire ecosystem has been built around it including conferences (Hadoop WorldHadoop Summit), books, training, and commercial distributions (Cloudera, …


Added by Vincent Granville on August 24, 2011 at 11:57pm — No Comments

My reply to Avinash Kaushik comment on how useless web analytis reports are

Reports are useless partly because data modeling engineers and business analysts (producing database schema, UIs and Dashboards) can't communicate well with top management or internally, and end up producing tons of random alarm emails that nobody read anymore. In my opinion, the biggest problem is that corporations usually don't have a translator who can truly speak both tech and business. These translators are impossible to find, all of them are actually CEO competing with you, trying to…


Added by Vincent Granville on August 24, 2011 at 10:45pm — No Comments

Why math errors still persist in high stake situations | Wall Street Journal

Posted as "Sorry, Wrong Number", on the Wall Street Journal.

By Carl Bialik

My print column examines high-profile instances, both recent and old, of numerical errors, afflicting data from spacecraft orbit calculations to economic statistics.

The stakes often are high. “Decision-making today is heavily reliant on data, which…


Added by Vincent Granville on August 20, 2011 at 10:36pm — No Comments

Research forecasts a 50 to 60 percent gap between the supply and demand of people with deep analytical talent

New research by the McKinsey Global Institute (MGI) forecasts a 50 to 60 percent gap between the supply and demand of people with deep analytical talent. Do you believe in these numbers? We are running a test, posting made-up, anonymous stellar analytic resumes (from non-existent people) on job boards, to see whether it attracts recruiters and hiring manager.

So far the response rate by genuine hiring managers or recruiters has been abysmal. This seems to contradict …


Added by Vincent Granville on August 18, 2011 at 3:44pm — 2 Comments

So You Want a Job: Interviewing Data Miners and Modelers

Judging by the recent posts on numerous web sites, many companies are looking for people with data mining and modeling (DM) skills.  I recently interviewed some candidates for an open position.  Since people in this field are a unique group, and interviewing them can be challenging, I thought you might like to hear about my approach.

Philosophy for Hiring and Interviewing

When I interview a DM candidate, let’s call her…


Added by Vincent Granville on August 2, 2011 at 3:46pm — 1 Comment

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