Beta
×

Welcome to the Slashdot Beta site -- learn more here. Use the link in the footer or click here to return to the Classic version of Slashdot.

Thank you!

Before you choose to head back to the Classic look of the site, we'd appreciate it if you share your thoughts on the Beta; your feedback is what drives our ongoing development.

Beta is different and we value you taking the time to try it out. Please take a look at the changes we've made in Beta and  learn more about it. Thanks for reading, and for making the site better!

Comments

top

Google CEO Schmidt Predicts End of Online Anonymity

shabtai87 Re:A bit of overkill (591 comments)

Stick News organizations on there too. There's a place for accountability for what you say and do, but that's not nearly the entire internet.

more than 4 years ago
top

Bill Gates Doesn't Work At Microsoft Anymore

shabtai87 Re:Question of the Day (497 comments)

Or Steve Jobs, isn't he the new bully?

more than 3 years ago
top

Potato-Powered Batteries Debut

shabtai87 Re:Puff piece (284 comments)

Yea, not like there was ever a potato famine or anything...

more than 4 years ago
top

Why Being Wrong Makes Humans So Smart

shabtai87 Machine Learning? (311 comments)

I think that anyone who has dabbled in machine learning would not be too shocked (weather by Hume's version or this post). It's the error term in machine learning, adaptive filtering, etc. that really drives the learning. As a stupid but simple example: Least Mean Squares in adaptive filtering (essentially gradient descent over the error surface).

more than 4 years ago
top

Potato-Powered Batteries Debut

shabtai87 Re:Puff piece (284 comments)

I'm sure there's a significant way this differs from 50% of 4th grade science projects...

more than 4 years ago
top

Pakistan Lifts Ban After Facebook Deletes Offending Page

shabtai87 Re:Bans (677 comments)

But that means removing facebook almost completely.... but wait, that's a good thing, so yes, they should be fair!

more than 4 years ago
top

Why Are Digital Hearing Aids So Expensive?

shabtai87 Re:Medical... (727 comments)

Yes, although as looking through some of the electronics on some of these (depending on the severity and type of hearing loss obviously), there are some that use rather sophisticated adaptive filtering methods and feedback loops to remove noise from having the system so compact and rigidly affixed to the ear. Getting all that so small and power efficient isn't as easy as it might seem. The book I'm using for my source here is "Digital Hearing Aids" by James Kates (http://www.amazon.com/Digital-Hearing-Aids-James-Kates/dp/159756317X/ref=sr_1_4?ie=UTF8&s=books&qid=1268529085&sr=1-4).

more than 4 years ago
top

Recovering Data From Noise

shabtai87 Re:Why not... (206 comments)

That's pretty interesting because pure compressed sensing uses an L0 constrained minimization (min |a|_0 such that ||x-D*a||_2^2 epsilon). The L1 minimization is a not quite so trivial equivalent problem (min |a|_1 such that ||x-D*a||_2^2 epsilon) given that a is sparse enough. Although I do think that they knew it was equivalent before the rigorous proof was established.

more than 4 years ago
top

Recovering Data From Noise

shabtai87 Re:Why not... (206 comments)

Interesting. Were they learning kernels or using random ones?

more than 4 years ago
top

How Artificial Intelligence Is Changing Music

shabtai87 Re:A Novelty At Best (261 comments)

There are actually methods being looked into to analyze art by certain unsupervised learning methods. Right now this has been looked at for paintings (http://news.bbc.co.uk/2/hi/technology/8440142.stm, BBC news) and (http://www.math.dartmouth.edu/~dgraham/hughes_pnas.pdf, the pdf of the actual paper) but similar mathematical models exist for auditory coding, and might be applied to characterizing the various styles of music without researchers fiddling with all the knobs. Will this type of analysis be useful in proceeding? Maybe, maybe not. But if there's enough success in distinguishing paintings by certain artists from well make fakes, why not try to turn the model into a constructive model that might generate art a la a certain artists (or musician if applied to art?)

I do have to agree (as a lover of music) that it will not be a complete replacement by any means, but it will definitely be amusing to see how close models of artists can be to the real thing based solely on their art.

more than 4 years ago
top

Recovering Data From Noise

shabtai87 Re:Why not... (206 comments)

Amusingly enough, the idea of compressed sensing (I will rephrase for clarity) that a minimal sampling is needed for working with high dimensional data that can be described in a much smaller subspace at any given time has been used to describe neural processes in the visual cortex (V1). [See Redwood Center for Theoretical Neuroscience, https://redwood.berkeley.edu/%5D. The lingo used is a bit different than the CS community, but the math is essentially the same. The point being that compressed sensing could lead to answers a lot more natural for human perception than simply canceling out high frequencies.

Also the point is that CS leads to [near] perfect reconstruction for signals of a certain nature rather than the fuzzyness that comes from some other algorithms that do not take the inherent sparsity of the signal into account.

more than 4 years ago
top

DARPA Puts $32M Toward Quadruped Robot Prototype

shabtai87 Re:Congratulations (64 comments)

The picture does make it look like it has a mouth (that seems to be a lookout point?)

more than 4 years ago
top

Signs of Water Found On Saturnian Moon Enceladus

shabtai87 Re:The pendulum swinging (79 comments)

haha, I don't know why that went up anonymously. I'm not exactly ashamed about my views on the probability of finding bacteria on the moons of Saturn.

more than 4 years ago
top

Signs of Water Found On Saturnian Moon Enceladus

shabtai87 Re:The pendulum swinging (79 comments)

> that live off of solar power

crap, I meant thermal power!

more than 4 years ago
top

Signs of Water Found On Saturnian Moon Enceladus

shabtai87 Re:The pendulum swinging (79 comments)

> overestimating the probability there just out of love for 2001

I'm afraid I can't let you do that JoshuaZ...

more than 4 years ago
top

Call For Scientific Research Code To Be Released

shabtai87 Re:Not a good idea (505 comments)

What about comparison? Sometimes the goal isn't to reprove the same concept but to test speed/efficiency etc. In these cases the results should be able to be cloned so that one person can say "A is better than B" without the person who proposed "B" sitting up and saying, "well you must have run that on a bad machine" or "your code for our algorithm was obviously not as optimized as ours". Even so in some cases at least the raw data should be provided (garbage in/garbage out).

more than 4 years ago
top

Call For Scientific Research Code To Be Released

shabtai87 Re:Code isn't good enough. (505 comments)

Well, you can't really make someone code in what's convenient for you, at least all their code was available, so someone with the money to get the license could test it. You don't see physicists handing out large hadron colliders (or any other piece of large expensive machinery) with their results so that you can have fun with them in your basement... The point is that they did everything in their power to make you able to replicate their results.

more than 4 years ago
top

Call For Scientific Research Code To Be Released

shabtai87 Re:Stuff like Sweave (505 comments)

There's a lot of nice extensions using the listings package in LaTeX. I use a lot of MATLAB so I usually end up using the mcode.sty available on mathworks (http://www.mathworks.com/matlabcentral/fileexchange/8015). Its got the color coded parts right too, which is nice for readability. More importantly I'll save the current code at the time of that report with the report itself, just in case I get really drunk and decide try to "fix" any base code.

more than 4 years ago
top

Internet Nominated For 2010 Nobel Peace Prize

shabtai87 Re:Soo.... (259 comments)

ooh, ooh, will they also fake another moon landing while they're at it?

more than 4 years ago

Submissions

shabtai87 hasn't submitted any stories.

Journals

shabtai87 has no journal entries.

Slashdot Login

Need an Account?

Forgot your password?