Fluctuations - Markets often fluctuate by +/- 2% on a day-to-day basis. Graphs of market trends are up-dated on-line and in real-time on various web sites. http://money.ca.msn.com/

An example of this is the DJI average which increased by 1.65% today (2010-08-28).

DJI (Daily)

However, it's…

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Time series analysis and a control group may be used to evaluate the success of a direct marketing campaign whether it is delivered via Canada Post, or is an e-mail or search engine marketing campaign. A control group is a random sample of customers who do not receive a direct marketing offer and their behaviour may be compared to a similar, randomly generated group of customers who don’t receive one. This type of direct marketing campaign analysis is performed over time to compare two…

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Data Mining/Machine Learning/AI/Natural Language Processing



All of these fields help us sift through and organize huge amounts of information or data. When you apply your knowledge in these areas to a challenging problem in the online space, you know that you are working at a scale that is just immense. It’s much easier said than done. If you have a passion for this area and have a technical background there are a multitude of open positions that might hold a long-term career… Continue

The Hindenburg Omen IS Scary, but So Are the Fundamentals



Another down day on Wall Street Thursday sent the Dow below 10,000 for the first time since early July. Fear in the market is being expressed by the continued rally in Treasuries and widespread chatter about an ominous sounding technical indicator: The Hindenburg Omen.



The Hindenburg Omen has a roughly 25% accuracy rate in predicting big market upheaval since 1987, meaning it's far from infallible but isn't… Continue

Looking to hire top-notch data modelers, predictive analysts and other advanced data analytics professionals to beef up your organization’s analytics skills? Better get your checkbook ready.



As more and more companies deploy predictive analytics tools and other data analytics software and begin filling the ranks of their analytics team, the pool of available talent is shrinking and hiring costs are growing, according to industry analysts and executives at companies that are in the… Continue

(from NY Times)



Complex as they may seem, traditional computers deal in a simple art. They rely on tiny switches that turn on and off, producing the streams of ones and zeros that software eventually translates into something meaningful to a human.



Some computer scientists find solace in the degree of certainty that comes from trading in yes-or-no operations.



Lyric Semiconductor, a start-up that… Continue

This information is public and can be found at http://lbloom.net/uw05.html. See the individual salaries at www.datashaping.com/uw2005.txt, ranging from $7/hr to $40,000 per month. The highest salaries are associated with "coach football" job titles: maybe this university specializes in teaching football.…

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Inductive Decision Tree (IDT) or Logistic Regression analysis may be used to identify individuals or households who should NOT be the target of direct marketing campaigns, thus increasing response rates, lowering cost-per-click e-mail costs and increasing the return on investment (ROI) per responder. Conducting this analysis requires first collecting data on customers who do not wish to be directly marketed to. In Canada, a person may request that he or she be exempt from direct marketing…

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Fitzgerald Analytics client Bundle.com is preparing to launch their full site with exciting new functionality in September.…

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It’s not just job-threatened journalists who are worried about the rise of low cost content generators like Demand Media and Associated Content.



A group of established content syndicators are concerned enough by these companies’ growing clout–and what they see as diminishing content standards on the Internet-that they are looking to do something about it.

Officials from the three-year-old Internet Content Syndication Council, which includes members such as Procter & Gamble,… Continue

as reported by our members...

* 2010: http://www.datashaping.com/analytics_links_2010.shtml
* 2009: http://www.datashaping.com/analytics_links.shtml
* 2008: http://www.datashaping.com/analytics_links_2008.shtml

Hi All,

I have built a logistic regression but I am not able to figure out which goodness of fit measure will help me know 'How much variability of the dependent variable is being explained by the current model'

I have calculated few pseudo r2 to measure this but as we know pseudo r2 is not a good way of measuring.

In addition to this can any one tell me how to calculate McKelvey & Zavoina's pseudo r2

Thanks

Jai