Recently, for a research paper, I had some samples and I wanted to compare them. Not to compare the means (by construction, all of them were centered) but the dispersion. And not their variance, but more their quantiles. Consider the following boxplot type function, where everything is quantile related.
The development of my attitude toward plain text files over time, graphed.
Today we want you to show how you can provide live tracking charts for Web-based dashboards. This small showcase Application is based on Wicket 6, Wicket Websockets and Ubercharts.
This PHPDay talk from David Zuelke explores data processing with PHP and MapReduce.
Applied mathematics as pragmatic problem-solving methodology.
Banking, you say? In your Facebook, you say? What could possibly go wrong?
Google recently announced some major new features for its BigQuery analytics tool, including SQL-esque join and aggregate functionality, native TIMESTAMP support, and an expanded web UI.
If you are facing an exception like the one at , then the problem might be hard to figure out. Because, if you look at the Queues in the MQ explorer, the queu named FOOQ will be there.
Here's a tutorial on modelling skills of tennis players with TrueSkill rating model in Scala.
Welcome to 24 x 7 x 365 connectedness and the challenges that come with an always-on world. That world is generating data, loads of data. And the more we’re ‘on’, the more data, and the more reason to be ‘on’. It’s a never ending cycle of chasing our data tail.
This week, Arthur Charpentier brings us the Internet as surveillance state, how Mahout and R threaten SAS, the social structure of news, and much more.
Most of you who subscribe to this blog use Google Reader or use an RSS reader that depends on Google’s Feedfetcher. Here’s a snapshot from before Google announced the end of Reader.
In today’s episode, Tyler showcases the Netflix and Newegg apps for Windows 8 as good examples of apps that make it easier for users to find and process information.
In my previous article If Java was a Haskell I tried to explain the pure functional paradigm offered by Haskell through the words of a Java developer. In this post I will focus on the other strength of Haskell, a strong type system.
This is an incomplete blog post. Maybe you can help finish it. One of the formulas I’ve looked up the most is the volume of a ball in n dimensions. I needed it often enough to be aware of it, but not often enough to remember it.
In JPA there is no Constructor Expression for native SQL queries. SQL Result Mapper fills the gap!
And because the implementation was quite easy there is an implentation for JDBC as well.
DaaS strategies have increased dramatically in the last few years with the maturation of technologies such as data virtualization, data integration, SOA, BPM and Platform-as-a-service.
It turns out that when you have a lot of "best minds" working on the same problem, you come up with some pretty interesting technology - no matter how inane that problem may be.
Today: Etsy's methodical battle-plan for rooting out the Java browser plugin from its systems, the downside of shiny new technologies, and the burgeoning market for cat apps.
A brain dump of thoughts and rebuttals that immediately sped through my mind as I read Bruce Schneier's latest piece, "The Internet is a Surveillance State."
This past Wednesday and Thursday (March 13th and 14th) OpenSource Connections held an on-site 2-day Solr training course called Solr Unleashed.
As you’ve probably heard by now, Google is shutting down Google Reader on July 1, 2013. Reactions are mixed.
So here’s the problem: You’ve finally found a block of time to set down and get your head around Hadoop and MapReduce.
Everyone wants to deal with Big Data and the new hype topic is on every CIO’s mind. There are currently many different definitions available to cover as many big data topics as possible.
Readers would be pleased to know that Solr has teamed up with Packt Publishing to organize a Giveaway of the Apache Solr 4 Cookbook.