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"It is a wonder that we have yet to officially write about probability theory on this blog. Probability theory underlies a huge portion of artificial intelligence, machine learning, and statistics, and a number of our future posts will rely on the ideas and terminology we lay out in this post. Our first formal theory of machine learning will be deeply ingrained in probability theory, we will derive and analyze probabilistic learning algorithms, and our entire treatment of mathematical finance will be framed in terms of random variables."

When Jonathan Goldman arrived for work in June 2006 at LinkedIn, the business networking site, the place still felt like a start-up. The company had just under 8 million accounts, and the number was growing quickly as existing members invited their friends and colleagues to join. But users weren't seeking out connections with the people who were already on the site at the rate executives had expected. Something was apparently missing in the social experience. As one LinkedIn manager put it, "It was like arriving at a conference reception and realizing you don't know anyone. So you just stand in the corner sipping your drink-and you probably leave early."

"Someone points me to this report from Tilburg University on disgraced psychology researcher Diederik Stapel. The reports includes bits like this: When the fraud was first discovered, limiting the harm it caused for the victims was a matter of urgency. This was particularly the case for Mr Stapel's former PhD students and postdoctoral researchers . . . However, the Committees were of the opinion that the main bulk of the work had not yet even started. . . . Journal publications can often leave traces that reach far into and even beyond scientific disciplines. The self-cleansing character of science calls for fraudulent publications to be withdrawn and no longer to proliferate within the literature. In addition, based on their initial impressions, the Committees believed that there were other serious issues within Mr Stapel's publications . . . This brought into the spotlight a research culture in which this sloppy science, alongside out-and-out fraud, was able to remain undetected for so long. . . . The scientific literature must be cleansed of everything that is fraudulent, especially if it involves the work of a leading academic. Sounds familiar? I think it also applies to recipients of the Founders Award from the American Statistical Association. There's more: The most important reason for seeking completeness in cleansing the scientific record is that science itself has a particular claim to the finding of truth. This is a cumulative process, characterized in empirical science, and especially in psychology, as an empirical cycle, a continuous process of alternating between the development of theories and empirical testing. . . . My first reaction was that all seems like overkill given how obvious the fraud is, but given what happened with comparable cases in the U.S., I suppose this "Powell doctrine" approach (overwhelming force) is probably the best way to go."

Imagine going to work every day and at the start of your day, with your first cup of coffee, you sit down to glance at beheadings, children in the process of being raped, human bodies in various stages of decomposition, the living and dead results of domestic violence, hanging bodies of 10 year old boys accused of being gay, real-life snuff films and bloody dog fighting rings and their subsequent results. Can you think up a human horror? I've probably seen it or a picture or video of something very similar.

Well, it was only a matter of time: first, there were robot swarms on the ground. Then, there were robot swarms in the air. And now, we've got robot swarms taking over a swimming pool. Run for the hills! Or really, you'll probably be fine running for any sort of dry land if you want to escape this swarm of robotic boats. But why would you want to do that? It's not like they're part of some sort of DARPA project that will one day take over the world or something. Nope, definitely nothing like that.

"Dropbox is holding a promotion for students in which you can gain 3GB of extra Dropbox space for two years, plus more depending on how many people in your school sign up. To sign up for Dropbox's "Great Space Race," all you need to do is head to the link below and type in a valid .EDU email address (which you probably have even if you aren't a student anymore). After you confirm it, you should see 3 extra GB of space in your account. If you get others at your school to sign up too, you'll get even more space, going all the way up to 25GB. So sign up, tell your friends, and invite them if you haven't already for bigger bonuses!"

In a controversial paper in Nature Physics, theorists claim they can prove that wavefunctions - the entity that determines the probability of different outcomes of measurements on quantum-mechanical particles - are real states.

Some probably see Sweden as a country where proper due process of law prevails, or at least exists. Others would very much like to see Sweden as such a country. One thing that this country has shown is, that when the interests of its establishment are threatened, all the branches of government fuse into one and cut any corners needed to neutralize the threat to its establishment, rules and rights be damned.

As I said in my recent review, I generally had a blast making my way through Uncharted: Golden Abyss on the PlayStation Vita. Despite some annoyances with the system's touch-screen and tilt-based controls, I had a good time working through the shooting and climbing sections and being rewarded with some well-acted witty banter in the cut scenes. But despite my overall enjoyment, there was still one point in the game where I was so frustrated I was ready to turn it off and never return. And while this frustration was probably at least as much my fault as the game's, I still think it would have been nice, and much less frustrating, if the game had offered just a little help getting me past that point.