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Featured Blog Posts – December 2014 Archive (10)

Controversial articles about data science, education

I posted a few interesting articles. You are free to disagree and post your comments.

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Added by Vincent Granville on December 31, 2014 at 12:31pm — No Comments

Regression Analysis using R explained

What is a Prediction Problem?

A business problem which involves predicting future events by extracting patterns in the historical data. Prediction problems are solved using Statistical techniques, mathematical models or machine learning techniques.

For example: Forecasting stock price for the next week, predicting which football team wins the world cup, etc.

What is Regression analysis, where is it…

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Added by suresh kumar Gorakala on December 26, 2014 at 12:43pm — 4 Comments

Predictive Analytics: When to use or not to use a consultant?

There are two circumstances that you should use a consultant:

1. When the consultant has both the domain knowledge and exact modeling experience: There are times that the consultant come to you and sell you the ideas of modeling something. Look for exact experience. Like an academic researchers, the most challenging task is to get the data-set, not the idea. Dataset is the execution. In the world of Big Data analytics - whoever owns the data has the command, especially in the…

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Added by Jeffrey Ng on December 26, 2014 at 3:00am — 3 Comments

Choosing the Right BI Tool

The fact is that a business intelligence solution roll-out should not take 1-2 years though it often takes that long and then some. When considering business intelligence reporting software it is crucial for every enterprise to thoroughly explore its options and choose the right solution provider in order to get a solution that is affordable and practical and one that will rapidly achieve ROI and user adoption and ensure low TCO. But, there is another, equally important factor…

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Added by Arbuda Dave on December 22, 2014 at 4:30am — 1 Comment

200 machine learning and data science resources

This list was started a while back and rather small, but it grew up to 200+ articles in the past few weeks. It will reach 400+ when completed. Essentially, this is the best of all our weekly digests. Also, it features all the articles (double-starred in red) that will be part of my upcoming book Data Science 2.0.…

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Added by Vincent Granville on December 20, 2014 at 3:30pm — No Comments

The Janus Imperative: Bridging Business Silos via Analytics

Originally posted on sctr7.

Analytics professionals should keep a persistent eye open for opportunities to create cross-functional insights from data. Insights can frequently be…

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Added by Scott Mongeau on December 17, 2014 at 6:00am — No Comments

Sentiment Analysis of 11 Million Tweets from Apple Live 2014 - Going beyond positive and negative

This blog was originally published on our Text Analysis blog, the blog post set out to analyze and visualize 11 million tweets collected around the time of and during Apple Live 2014.

Apple Live probably got off to the worst start possible earlier…

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Added by Mike Waldron on December 8, 2014 at 11:16am — No Comments

Why Propensity Scores not working in Campaign Analytics??

Hi All ,

I've recently  build a predictive data model for a campaign to target  group of customer who can switch from  payment method  "A" to Payment method "B".

The idea was to come up with predictive model with payment/usage variables as independent variable and  the event of switch in past is taken as  dependent variable.

i) I used logistic regression model for probability  estimation.

ii) The  data  is sorted in order of descending probability…

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Added by Himanshu Sinha on December 5, 2014 at 4:00am — 1 Comment

Simplifies SQL-style Computations – Records Corresponding to Max Value

In developing database applications, usually it is the records corresponding to the max/min value that we need to retrieve, instead of the value itself. For example, the occasion in which each employee gets his/her biggest pay raise; the three lowest scores ever got in golf; the five days in each month when each product gets its highest sales amount; and so on. As the max function of SQL can only retrieve the max value, instead of the records to which the max…

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Added by Lynn Guo on December 1, 2014 at 6:05pm — No Comments

Data Scientist, The Magician?

Isn't it true? Isn't this what most of the business folks and CXO's expect from their data science

teams? Yes in fact, this is what we have been told in nearly all of conferences we attend. Thumping case studies, feverish pitch makes one believe in the story and you walk out with a true sense of achieving same…
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Added by Vikas Kamra on December 1, 2014 at 4:30am — No Comments

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