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Data science versus statistics, to solve problems: case study

In this article, I compare two approaches (with their advantages and drawbacks) to compute a simple metric: the number of unique visitors ("uniques") per year for a website. I use the word user or visitor interchangeably.

Source for picture: …


Added by Vincent Granville on October 27, 2014 at 9:30am — 7 Comments

The Richness and Reality of World Data

I’ve been thinking a lot about data, where it comes from, and what it looks like.  I can’t help it.  I’ve been a data geek for almost 15 years.  And I find data beautiful.  Not necessarily in its raw form, mind you. Then it’s just messy and more often than not a pain to deal with, especially when it gets really, really big.  But when smart, creative people start to clean it up and use it in different ways to find the hidden stories that make sense, it can help us learn things in ways that we…


Added by Anne Russell on October 27, 2014 at 6:30am — No Comments

My Data Science Apprenticeship Project


Any author would like to know if his/her article will be successful or not. Here is an attempt to deal with this task.

Data and tools

  1. We obtained 5000 most significant articles (Analytic Bridge and Data Science Central) from here (…

Added by Nikitinsky Nikita on October 26, 2014 at 10:30am — 1 Comment

Qualitative Engine for Organizational Simulations

Given the nature of the community, presumably many visitors already have a strong understanding of the nature of quantitative data. Perhaps more mysterious is the idea of qualitative data especially since it can sometimes be expressed in quantitative terms. For instance, "stress" as an internal response to an externality differs from person to person; yet it would be possible to canvas a large number of people and express stress levels as an aggregate based on a perceptual gradient: minimal,…


Added by Don Philip Faithful on October 25, 2014 at 6:37am — No Comments banned on Google

This happened tonight, shortly after Facebook took the same decision. Even itself is banned, see picture below. This happens only with Chrome, but not with other browsers such as IE or Firefox. The ban will probably be lifted in several hours.

This brings interesting questions:

  • is a widely used URL shorterner and…

Added by Vincent Granville on October 24, 2014 at 11:00pm — No Comments

How Zipfian Academy Graduate Alex Mentch became a Data Scientist at Facebook

Zipfian Academy has graduated more than 50 alumni, placing graduates into data science roles at Facebook, Twitter, Airbnb, Tesla, Uber, Square,…


Added by Molly Larkin on October 24, 2014 at 10:22am — 3 Comments

Prescriptive versus Predictive Analytics - A Distinction without a Difference?

Summary:  Is the addition of “Prescriptive” analytics to our nomenclature really worthwhile or are we just confusing our customers?

I admit to being annoyed when this or that industry wag tries to coin a new term to describe some portion of the discipline we are already practicing.  Some of these folks I think are…


Added by William Vorhies on October 23, 2014 at 10:00am — 9 Comments

SMBs and the Cloud: Things to Consider Before Adopting Cloud Strategies

For a very long time, businesses had their documents filed in folders and stored in huge metal cabinets. But thanks to advances in technology, they were eventually coded and stored digitally. As we advance through the Age of Information, the traditional digital storage devices like the floppy, compact, and flash discs evolved into cloud storage. Eric Griffith, a…


Added by Kyle Albert on October 23, 2014 at 5:51am — No Comments

How should a financial report look like?

It should be detailed, featuring appropriate and properly scaled business charts, organized in a meaningful way and commented:

Added by Andrej Lapajne on October 23, 2014 at 4:00am — 1 Comment

Fake traffic un-detected by Google Analytics

Or to put it differently, when your metrics lie to you: how to find out, and what should you do? 

The purpose of this article is to let Google aware of the problem, and fix their Google Analytics reports (filtering out the fake traffic). This scheme also impacts many companies computing website rankings. Tons of websites now have their traffic…


Added by Vincent Granville on October 22, 2014 at 6:30pm — 4 Comments

Weekly Digest - October 27

The full version is always published Monday. Starred articles or sections are new additions or updated content, posted between Thursday and Sunday. 



Added by Vincent Granville on October 22, 2014 at 3:00pm — No Comments

50 Face Recognition APIs

Interesting listing published on Mashape. Only the top 12 are listed below. It would be nice to have a separate blog for voice recognition APIs. I've been thinking at using voice rather than passport or driving license, as a more secure ID. The voice has a texture unique to each individual.…


Added by Mirko Krivanek on October 21, 2014 at 1:30pm — No Comments

Harvesting wild data: A pickers guide.

The old world original genus names for fruit trees were all named after women. Representing an implicit importance of relation a fruit bearing tree and its fruit to the human condition. A simple and elegant description between human perception and the reality of living.  Now we take liberty with fruit as it is available from all over the world any time of year. To look at a lovely ripe peach on a wonderful late summer day and to taste its wonderful essence over shadows the long rich story of…


Added by Sigmond Axel on October 21, 2014 at 10:05am — No Comments

When Personal Security gets real

Large Scale Data Sharing made safe and simple.

As the web gets more personal some ideas spread like wild fire and others just fizzle. Things like tokenized payment systems that take many years in concept for success all it takes is one large corporation to adopt it to make it mainstream. The mobile application movement is a lot like this expanding into data sharing with concepts like menu sharing among families and friends for dinner. This  can be considered by some as a sign of a new…


Added by Sigmond Axel on October 21, 2014 at 10:03am — No Comments

Rise of online real money gaming; and how it can grow with its offline counterpart?

For long, the real money gaming industry had carried the persona of bright and shiny casinos, roulettes, long rows of slot machines, high stake poker tables, etc. However, in the world where internet has penetrated into each and every aspect of our lives, gaming is no exception. Online gaming has gained tremendous eyeballs over the past few years. In its latest avatar, online gaming has added another subset that involves real money. While it has been existent worldwide for quite some time…


Added by Sumit Prasad on October 20, 2014 at 9:25pm — No Comments

Y Combinator companies has more funding than the sum total of all remaining accelerators

In this data analysis a very interesting and powerful fact emerges. The data is taken from and analyzed to create visualizations.…


Added by Nilesh Jethwa on October 20, 2014 at 10:00am — No Comments

Quantifying the Value of a NoSQL Project

Summary:  If you’re making the decision to use NoSQL, how do you quantify the value of the investment?

If you are exploring NoSQL, once you become educated on the basics there are two questions that will rapidly move to the top of your list of considerations.  

  • What does it…

Added by William Vorhies on October 17, 2014 at 10:00am — No Comments

BI Invades HR: How Analytics are Transforming the Hiring Process

Seasoned HR professionals have always been expected to make some instinctual decisions when it comes to hiring and managing employees. However, with the rise of Business Intelligence (BI) software, such practices may be at an end. Now that analytics have entered the comfortable cubicles of HR, there is far less room to make decisions based on hunches or personal opinions.

The future of HR is analytical and, well, more intelligent.

Business intelligence software in Human…


Added by Charlotte Ritter on October 17, 2014 at 6:38am — 1 Comment

Bottom line on Data Visualization

The market for data visualization software has bloomed. I'm suspicious.

Companies like Tableau, Spotfire, SAS Visual Analytics, Qlik and Zoomdata are positioning their tools far beyond traditional business intelligence.  Capabilities for graphically navigating data, recognizing patterns and finding relationships are growing in both functional and economic scope.  These new tools can provide charting forms only imagined in the last decade like word clouds, circular hierarchies, tree…


Added by Michael Bryan on October 16, 2014 at 10:24am — 4 Comments

Weekly Digest - October 20

The full version is always published Monday. Starred articles or sections are new additions or updated content, posted between Thursday and Sunday. 



Added by Vincent Granville on October 15, 2014 at 4:30pm — No Comments

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