By Jinjing Xie - Consultant, Shanghai.

The challenge here is interesting but also very clear: for a given un-ordered vector of numbers, select from it a longest increasing (or decreasing) subsequence. This subsequence may not be unique.

For example, in the following sequence,

`62 49 42 54 59 39...`

By Jinjing Xie - Consultant, Shanghai.

The challenge here is interesting but also very clear: for a given un-ordered vector of numbers, select from it a longest increasing (or decreasing) subsequence. This subsequence may not be unique.

For example, in the following sequence,

`62 49 42 54 59 39...`

By Andy Nicholls

UseR! 2014 is now over. As usual there were many interesting talks and I couldn’t attend them all but from the talks that I did attend there were definitely some themes developing. The first theme is documentation. RStudio have clearly spent considerable effort integrating shiny...

By Andy Nicholls

UseR! 2014 is now over. As usual there were many interesting talks and I couldn’t attend them all but from the talks that I did attend there were definitely some themes developing. The first theme is documentation. RStudio have clearly spent considerable effort integrating shiny...

By Kate Hanley.

I may be biased, but I strongly believe that R is one of the best tools out there for performing statistical analyses and related tasks. It is driven by academia, so cutting-edge methods are available quickly and painlessly, and many of the world’s foremost statistics and data mi...