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Data science and statistics

July 30, 2015 By editor

Prolific R developer Hadley Wickham provided an interesting perspective on data science and statistics in a recent Priceonomics article.

There are definitely some academic statisticians who just don’t understand why what I do is statistics, but basically I think they are all wrong. What I do is fundamentally statistics. The fact that data science exists as a field is a colossal failure of statistics. To me, that is what statistics is all about. It is gaining insight from data using modelling and visualization. Data munging and manipulation is hard and statistics has just said that’s not our domain.

This insight is at the heart of why the only way to get good at data science is to do it. Obtaining and preparing data prior to analysis is the bulk of a data scientist’s work. But, it’s not a simple concept that you can tie up with a nice neat bow. It’s a messy, convoluted process involving

  • trial and error
  • multiple, incompatible tools
  • missing information
  • organizational silos
  • quality issues
  • etc

It’s very difficult to cover this kind of stuff in a book chapter, or a traditional lecture. It’s like trying to teach automotive maintenance without putting on overalls—all makes perfect sense until you attempt to change the pistons.

Filed Under: Data analysis, Data science, Decision science

Definite proof that Jim Carrey causes autism

July 3, 2015 By editor

Fun example of “confusing” correlation with causation.

Jim Carrey causes autism

Filed Under: Data analysis, Decision science

R Consortium

July 3, 2015 By editor

The R Consortium has just been announced – with Microsoft as a founding Platinum member. Google, HP and Oracle are Silver members.

According to their website, the consortium

is a group of businesses organized under an open source governance and foundation model to provide support to the R community, the R Foundation and groups and individuals, using, maintaining and distributing R software.

What does all this mean for R users? One goal is to make R more accessible. As a open source project, getting started can be a little daunting.

A related challenge is the sprawling number of packages. These are of variable quality and, in many cases, have overlapping functionality. There is also no consistency across them. All of this adds to R’s learning curve. The foundation will facilitate collaboration and communication within the community which should help to mitigate some of these problems.

Microsoft’s participation as a Platinum member reinforces their recent commitment to R. It follows their purchase of Revolution Analytics, inclusion of R in Azure Machine Learning and plans for in-database R in SQL Server 2016.

Commenting on the foundation, Joseph Sirosh, Corporate Vice President of Machine Learning at Microsoft, said

Our efforts to build R into more Microsoft products and services, combined with our contribution to the R Consortium as a Platinum Member, gives me confidence that we’re helping today’s data scientists and business leaders to drive innovation and advances in the field of data science with R.

What next? R.NET?

Filed Under: Data analysis, Decision science

R on Spark

June 9, 2015 By editor

The upcoming Apache Spark 1.4 release will include SparkR—an R package that will allow big data (Spark) analyses to be run from the R shell. Computations in SparkR will be comparable to those that use the native Scala language.

Future developments are to include machine learning support.

Filed Under: Big data, Data analysis

UK general election predictions

April 30, 2015 By editor

FiveThirtyEight is publishing forecasts for the 2015 UK general election.

The site was founded by Nate Silver who made a name for himself creating models that were successful in forecasting the results of recent US elections.

Current predictions are for even closer parity between the Conservatives and Labour, with the SNP comfortably in third place (but not fully in control of the balance of power).

Filed Under: Data analysis, Decision science

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