andymatuschak.org: Square Signals

Slowly winning an epic war against a fiendish army of sine waves.

Cells for mobile phone base stations were invented in 1947 by Bell Labs engineers at ATCells for mobile phone base stations were invented in 1947 by Bell Labs engineers at ATTo rectify this vulnerability, they world cup ringtones out an implementation which showed that stronger, asymmetric key establishment is feasible for certain classes of devices, such as mobile phones.Between the 1980s and the 2000s, the mobile free i850 nextel ringtones has gone from being an expensive item used by the business elite to a pervasive, personal communications tool for the general population.ringtones and picture messages

Learning a Thing or Two from Ruby

So I was sitting in a lounge full of freshmen, typing furiously, when suddenly I shouted with glee:

“My network! It neurals!”

The network converges! Ignore the typo in the second title.

My task, and I had to accept it:

I’m taking this course called “Learning Systems,” which teaches things like neural networks, genetic algorithms, and other buzzword-sounding devices. Our first assignment went along the lines of:

“Design and implement a neural network that learns through gradient descent on its error function. We give you a bunch of training data; you give us a function that generates outputs for all inputs with an error of less than 10-3 and has low probability of being a local minima. You’ve got one week—go.”

That wouldn’t be so bad, except that this is only one of my five classes, and I like sleeping. Eep.

Traitor!

So I need to do this fast. You might think that as a zealous Cocoa programmer, I started up Xcode and started writing a bunch of @interface declarations. Nay, I say!

This summer, I wrote my research project with Ruby on Rails; this gave me a huge appreciation for that spunky little language. Much as I like Cocoa, I’ve found that since I’ve returned to Objective-C this fall, there’s a whole lot I miss in Ruby.

continued…

  • Like stevenf, I’m a bit miffed and curious about the lack of a final Leopard build for developers. Surely, now that it’s shipped to duplication, the excuse that they’re far too busy finalizing things doesn’t hold water. Unless 10.5.1 is imminent.

    What’s the procedure here? Is it legit to just download Leopard on 10/26, since we sort of have a license? I suppose it’s a spirit vs. letter of the law kind of thing. All the same, it feels somehow very wrong for us, the faithful, to be stealing from the hand that feeds.

    Or doesn’t, as the case may be.

    (1)

RubyBrowser?

This will be cool, I think. I’m not getting distracted from Sparkle 2, I swear.

Picture 2.png

It also happens to be written in RubyCocoa, which I am enjoying immensely. Also check out RubyObjC, which is superior technically but seems less polished. Maybe I’m wrong—feel free to weigh in.

More on why it’s a lot more fun to code in Ruby than in Obj-C later.

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