rohitarondekar

7 ms·

31.
by rohitarondekar 14y ago
This was shown by Professor Andrew in the Coursera ML class that's happening right now. Given n features x1 to xn we introduce x0 feature which is always set to 1. During the Regularization lectures the professor said that we don't need to
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by rohitarondekar 14y ago
Thank you for explaining, I think I get it now. The ML course on Coursera is a little light on the Maths. As in the professor only explains as much is needed to perform the techniques. So I think I'll be watching Strangs Linear Algebra lect
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by rohitarondekar 14y ago
According to Wikipedia[1]Matrix Inversion is also O(n^3) and according to the note can be even better by inverting smaller matrices within and multiplying[2]. My linear algebra isn't very good so I'll have to look into LU Factorization but
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by rohitarondekar 14y ago
You can use the same techniques used in Linear Regression (with multiple features) to do Polynomial Regression. For example suppose you have two features x1 and x2, you can add higher order features like x1 x2 or x1^2 or x2^2 or a combinati
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by rohitarondekar 14y ago
As pointed out by Tony Arkles in blog post comments, GSL is a bit restrictive in it's licensing: GSL can be used internally ("in-house") without restriction, but only redistributed in other software that is under the GNU GPL. http:/
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by rohitarondekar 14y ago
In computing (X^TX)^(-1) if the number of features is large then it can be slow as computing the inverse of a matrix is slow. Also unless you use pseudo inverse (pinv in octave) you need to take care of degenerate cases. However if you use
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by rohitarondekar 14y ago
Are there any UX or usability studies regarding date time formats to use on the web? I'd be interested in knowing more than this feels right to me . :)
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by rohitarondekar 14y ago
Interesting. I'm just going on a hunch here, but maybe getting better photographs of the Mars surface is not a priority anymore? From the wikipedia page of Mars Science Laboratory the goals of the mission are: To contribute to these goals,
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by rohitarondekar 15y ago
Try to get into a bugmash of some kind. I started this way with Rails and I wrote about it http://www.rohitarondekar.com/articles/my-first-rails-bugmas... Many companies and tech groups have these around the world during meetups and confe
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by rohitarondekar 15y ago
I think he meant [ u s e r @ma c h i n e E x amp l e ] $ . . / mo n o r a i l . j s i n s t a l l mo o t o o l s
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by rohitarondekar 15y ago
Switched to using Opera Mini Next. I don't like the social home page but it can be switched off. The speed dial looks really nice and over all the browser is responsive. Great work as usual from Opera! Allows my aging Nokia N73 to browse th
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Flowstone 2: Flexibility Of Graphical Programming With Ruby At It's Core(dsprobotics.com)
1 points by rohitarondekar 15y ago|0 comments
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by rohitarondekar 15y ago
I agree. I just hate to see this ― "zomg bundler sucks at <some feature usually speed>! I hate using it! It has to be fixed for me!" Any open source project needs help. The maintainers of Bundler have 200+ issues on the issue tracke
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by rohitarondekar 15y ago
The correct place for these discussions is on the issue trackers & mailing lists of Bundler.
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by rohitarondekar 15y ago
It's unfortunate that this being down voted. Because he means it sincerely.
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by rohitarondekar 15y ago
Why is this being down voted? It's true.
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by rohitarondekar 15y ago
Write your own? I'm sorry but if Bundler doesn't solve your problem (or introduces other problems) either try and fix those issues OR write your own dependency management lib.
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by rohitarondekar 15y ago
You don't have to use Bundler. Just delete the Gemfile and manage the dependencies yourself.
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by rohitarondekar 15y ago
You can sign up for a coursera account. Many more video lectures are up. Discussion forum is also open
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by rohitarondekar 15y ago
The usual suggestions ― books, tutorials, screencasts, pairing w/programmers, university courses etc. A new emerging trend is to learn via websites that give you a task and you write code to perform that task, on the website itself. One suc
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by rohitarondekar 15y ago
"The whole callback chain is wrapped in a transaction. If any before callback method returns exactly false or raises an exception, the execution chain gets halted and a ROLLBACK is issued; after callbacks can only accomplish that by raising
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by rohitarondekar 15y ago
This works on Ubuntu 11.10. There is a lot of quality content on ITunes and using Ubuntu as my main OS meant I couldn't access it. But this is awesome! I can finally download those lecture videos. Thank you!
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by rohitarondekar 15y ago
Doesn't this apply to any form of exercise though?
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NASA’s open source projects(code.nasa.gov)
102 points by rohitarondekar 15y ago|18 comments
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The Role of Socratic Questioning in Thinking, Teaching, and Learning(criticalthinking.org)
1 points by rohitarondekar 15y ago|0 comments
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by rohitarondekar 15y ago
[EDIT 3] Ah in the search result, on the right there should be a link like "[PDF] from ethz.ch".
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by rohitarondekar 15y ago
Try searching for the title on http://scholar.google.com ― I've found quite a few papers that were behind pay walls using it. [EDIT] I've not found the papers listed by the OP but other papers in the past. [EDIT 2] Oops the OP in fact has
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by rohitarondekar 15y ago
Fair point. But if this supported adding and managing feeds of my choice I would certainly give it a try. I'm guessing that this is a test of their reader and hence an MVP. P.S I currently use Google Reader and am looking for alternatives.
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by rohitarondekar 15y ago
As I understand it, a lot of work has been put into Rails 3.x series so that it is easier to upgrade your apps. It should be a lot easier to go from 3.0 to 3.1 or 3.2 and hopefully from 3.0 to 4.0.
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by rohitarondekar 15y ago
Another more actively maintained list of courses/lectures is available at Open Culture: http://www.openculture.com/freeonlinecourses

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