Subscribe to Dr. Granville's Weekly Digest

All Blog Posts (1,132)

Weekly Digest - September 22

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

Featured

Continue

Added by Vincent Granville on September 17, 2014 at 5:30pm — No Comments

Big data disguised as small data, causing dangerous side effects

You would think that clinical trials, where as little as 12 patients are monitored and A/B tested over a short-time period, is the tiniest kind of data, processed only by special statisticians using ad-hoc techniques. Likewise, your Ph.D. study or Master thesis might have involved a small analysis with less than 300 observations, resulting in a publication in a good journal (hopefully): this is indeed tiny data.…

Continue

Added by Amy on September 17, 2014 at 12:00pm — 4 Comments

Job skills required to get hired by data science startups

Interesting article posted in yCombinator, a community for angel investors. They looked at job ads posted by various analytic-intensive start-ups in 2014.…

Continue

Added by Amy on September 17, 2014 at 11:30am — No Comments

Crazy Data Science Tutorial: Market Basket Analysis

Pretend you’re an illegal arms dealer. And if you really are an arms dealer, I mean absolutely no offense. None taken? Good.

ArmsSale

Business is booming (ha!). You have a steady stream of orders from your customers, and against the advice of your chief henchman you have been keeping careful records of every sale (apparently he’s concerned about something called “evidence”). As a result, you know which customers have ordered what items over a three-year period, and now it’s…

Continue

Added by Randal Scott King on September 17, 2014 at 6:40am — No Comments

What Are Analytic Marketplaces?

The Naked analyst Episode 9 looks at the best places for analytic competitions.

Here are my top 4 sites. They range from the the well known to some more specialist sites. There are 3 marketplaces I know of, and a 'world championship' currently running.

Kaggle

Kaggle is the world's largest community of data scientists. They compete with…

Continue

Added by Steve Bennett on September 16, 2014 at 7:17pm — No Comments

Defining Big Data

Defining big data is now a hot topic. Berkeley University posted 40 very short definitions by thought leaders (including me). Here our goal is to offer a very detailed, comprehensive definition that (hopefully) suits everyone.…

Continue

Added by Vincent Granville on September 16, 2014 at 6:00pm — 3 Comments

Top Cities and Other Demographics for Data Scientists

This analysis shows the distribution of data scientists per country, city, gender and company. It is based on Data Science Central (DSC) member database, only including members who provided information regarding these fields, on sign-up. Not all members provide information about their location, company or gender. A small majority does, and these members tend to be over-represented in US. Differences with our…

Continue

Added by Vincent Granville on September 16, 2014 at 11:00am — No Comments

How Big Data is Revolutionizing Real Estate

The real estate industry has long operated according to its own traditions, but the availability of huge volumes of data is revolutionizing the way the industry works. Big…

Continue

Added by Rick Delgado on September 16, 2014 at 5:54am — No Comments

Lesson 9: Making Your Selection - Final Considerations

Continue

Added by William Vorhies on September 15, 2014 at 8:46am — No Comments

Too much talk in Analytics & too little action!

Is analytics yet another fad? Is there much more talk about it than real solid action. It does seem so when you look around you as a consumer.

Marketers still don’t care, as much, about being relevant to you. You get that umpteenth credit card solicitation from the bank which has already sold you a card. And nothing about a physical Retailer shopping experience makes it personal for you!

And yet your online…

Continue

Added by Ajay Kelkar on September 14, 2014 at 9:00pm — No Comments

Crazy Data Science Tutorial: Hadoop and MapReduce

You’re going to need minions for this one. Let me explain…

Hadoop inevitably comes into every Big Data discussion, even thought it isn’t a part of every Big Data solution. Even people who know very little about about it have at least heard about it.

mapreduce

Now, while mastering Hadoop can be complicated, having a basic grasp of it is not. Hadoop consists of two main parts: a file system name Hadoop Distributed File System (HDFS) and something called MapReduce. There’s…

Continue

Added by Randal Scott King on September 14, 2014 at 9:38am — No Comments

32 articles and resources from leading authors and practitioners (weekly selection)

Starred articles were potential candidates for the picture of the week. Enjoy our new selection of articles and resources (R, data science, Python, machine learning etc.)

Resources

  1. Sampling for Big Data -  KDD Powerpoint Presentation
  2. Extracting opinion phrases from user reviews with Stanford…
Continue

Added by Amy on September 14, 2014 at 8:30am — No Comments

Universal Data Model - A Really Different Look at Data

The idea of environmental determinism once made a lot of sense. Hostile climates and habitats prevented the expansion of human populations. The conceptual opposite of determinism is called possibilism. These days, human populations can found living in many inhospitable habitats. This isn't because humans have physically evolved. But rather, we normally occupy built-environments. We exist through our technologies and advanced forms of social interaction: a person might not be able to build a…

Continue

Added by Don Philip Faithful on September 13, 2014 at 8:11am — 2 Comments

12 Signs To Identify A Data Driven Culture

Great article from Avinash Kaushik, Google's analytics evangelist. This is a very long article with focus on digital analytics and digital metrics / KPIs, but still very much worth reading for any analytic practitioner. Signs are listed in reverse order - from (almost) total lack of analytic culture (#12) to masters in analytics (#1). Note that you can also achieve #1 with using very little if any data, read …

Continue

Added by Amy on September 12, 2014 at 12:00pm — 1 Comment

Data Science and Machine Learning for Preventing Fraud in Mom and Pop Ecommerce Shops

With the development and growth of ecommerce platforms like Shopify, the number of small- and medium- sized ecommerce businesses is growing at an impressive rate. But, with this growth comes a growth in market opportunities for the online villains and fraudsters out there who are looking to make a quick buck. It used to be that only huge corporations had the resources they needed to detect fraud and protect themselves from its damages. But, in this era of big data and…

Continue

Added by Lillian Pierson on September 12, 2014 at 11:26am — No Comments

Big Data Technology Vendor Consolidation

The "big data" technology vendor market is ripe for consolidation. The myriad of vendors and technologies is causing market confusion. Matt Turck created a nice visualization entitled "…

Continue

Added by Michael Walker on September 12, 2014 at 9:09am — 2 Comments

Lesson 8: Graph Databases

Summary:  Graph databases are your go-to choice when a…

Continue

Added by William Vorhies on September 12, 2014 at 8:26am — No Comments

Lesson 7: Column Oriented Databases (aka Big Table or Wide Column)

Summary:  Column Oriented DBs excel at OLAP…

Continue

Added by William Vorhies on September 11, 2014 at 8:00am — 1 Comment

Gamification: Realizing Elusive Engagement!

Game mechanics help penetrate the walls that consumers have erected to filter out the deluge of information that increasingly clutters their digital space.

Gamification: The rumbling concept…

Continue

Added by Sumit Prasad on September 10, 2014 at 8:52pm — 1 Comment

Weekly Digest - September 15

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

Featured

Continue

Added by Vincent Granville on September 10, 2014 at 2:00pm — No Comments

Blog Topics by Tags

Monthly Archives

2014

2013

2012

2011

1999

Follow Us

Videos

  • Add Videos
  • View All

© 2014   Data Science Central

Badges  |  Report an Issue  |  Terms of Service