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High Temperature Superconductivity Record Smashed By Sulfur Hydride

the_povinator Re:Can someone explain to me (80 comments)

I skimmed the paper at
http://arxiv.org/pdf/1412.0460...
and found some parts very confusing. E.g. in Fig. 1a, sulfur hydride seems to have critical temperature around 70K at 177GPa, and in Fig. 1b, it seems to have critical temperature of 185K at the same pressure. And the "measurements" in Fig. 4 don't look like measurements, they look like data generated using a mathematical function. Dan

about two weeks ago
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A Common Logic To Seeing Cats and the Cosmos

the_povinator Re:too many words (45 comments)

Could you comment on some of the claims in the abstract?

1. Deep learning is a broad set of techniques that uses multiple layers of representation...

Agreed- that's what "deep" implies.

Is multi-scale analysis a primary component of 'deep learning'?

This may be true in vision, but not in general (e.g. in linguistics tasks and in speech, there is usually not a natural notion of scale).

2. "relatively little is understood theoretically about why these techniques are so successful at feature learning and compression.

True... deep learning methods are not very easy to analyze (personally I am skeptical that there is much point in trying very hard to analyze them).

"We construct an exact mapping from the variational renormalization group..." Is this not new, not correct, or is this simply not of much use to deep learning?

I think the closest is to say it's not of much use. I didn't read the paper super carefully (and I'm not a physicist so am not familiar with the renormalization group), but I imagine the analogy is not very close at all and only applies in specific cases, e.g. in convolutional nets or something like that.

The renormalization group theory is so general and powerful, it's had profound impacts on many areas of theoretical and mathematical physics. Do you think this can't or won't impact the field of deep learning? If deep learning has multi-scale analysis at its heart, it appears on the surface that RG should be a good treatment. Have there been attempts to use RG for deep learning aside from the present work?

If the connection is real, it would seem to suggest that perhaps deep learning may have something to offer physics, if it really is "employing a generalized RG-like scheme." Do you have any comment on this?

I haven't read the paper in detail but I just don't think it's plausible that there is a very interesting connection as they are such different things.

To pick a random example, imagine you are a botanist and someone told you there is a connection between hydroelectric dams and oranges. Even if there is a connection, it's probably not something that is going to help you very much, and you probably wouldn't be so excited to read the paper explaining the purported connection.

about three weeks ago
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Sony Employees Receive Email Threat From Hackers: 'Your Family Will Be In Danger'

the_povinator Re:That Word (184 comments)

Islam does not really mean peace, it means submission (in Arabic). Salam, from the same Arabic root, means peace. The statement that "Islam means peace" is not something that all Muslims would agree with, it's simply something that people say when being politically correct about Islam. It's silly of course, when it's just about the least peaceful religion imaginable.

about three weeks ago
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A Common Logic To Seeing Cats and the Cosmos

the_povinator Re:too many words (45 comments)

Actual deep learning scientist here (e.g. see my publications page here.)

This article is way overblown. This is not the kind of paper that is likely to attract significant attention in the deep learning community. And the person who they got to say it was important, Ilya Nemenman, is not someone I have heard of.

Move along. Nothing to see here.

about three weeks ago
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Pizza Hut Tests New "Subconscious Menu" That Reads Your Mind

the_povinator frist post (186 comments)

When Ruthie says come see her
In her honky-tonk lagoon
Where I can watch her waltz for free
’Neath her Panamanian moon
An’ I say, “Aw come on now
You must know about my debutante”
An’ she says, “Your debutante just knows what you need
But I know what you want”

Read more: http://www.bobdylan.com/us/son...

about three weeks ago
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Single Pixel Camera Takes Images Through Breast Tissue

the_povinator Re:Not Human Breasts...Doh (81 comments)

It's not really correct to say "breast tissue". Chickens don't have mammary glands, so they have no breast tissue as such. What I imagine they used is the pectoral muscle of the chicken, known for culinary purposes as "chicken breast".

about a month ago
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CHP Officers Steal, Forward Nude Pictures From Arrestee Smartphones

the_povinator Re:Prison time (275 comments)

Pics or it didn't happen.

about 2 months ago
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GNU Emacs 24.4 Released Today

the_povinator Re:Sounds nice (156 comments)

Oh. I use text mode emacs normally and tty settings disallow it.

about 2 months ago
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GNU Emacs 24.4 Released Today

the_povinator Re:Sounds nice (156 comments)

The only important feature emacs lacks in my opinion, is the ability to run emacs within a sub-window of emacs.

about 2 months ago
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The One App You Need On Your Resume If You Want a Job At Google

the_povinator Re:Here is why you never chase what's "hot" in IT (205 comments)

1) By the time you learn it, it won't be hot anymore.

2) It's all about experience. Don't take my word for it, look at the job ads. Learn something all you want, if you don't have five years experience in it, your knowledge is useless.

3) These articles about what's "hot" are just standard corporate propaganda. IT employers always want people chasing their tails, studying everything, just so they have a larger labor pool.

4) Don't get constantly distracted trying to learn what is supposedly "hot" at the moment, just learn anything useful, and be very good at it. Being very good at anything useful is far more valuable than a superficial knowledge of the latest fad.

5) These articles don't tell you anything more than they tell everybody else in the world. Learning whatever is not going to give you any competitive advantage.

All JMHO, of course.

Disclosure: I worked in IT for over 30 years. I have held several jobs, at several companies. I have been through the hiring process a lot.

Your statement is not relevant here because Matlab is not hot. scipy/numpy are hot, Matlab is old. I work as a research scientist in a top university doing heavy data-processing (however I personally maintain my own C++ wrapper of BLAS so I don't rely on other people's wrapper code).

about 2 months ago
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Debian Talks About Systemd Once Again

the_povinator Re:Some Sense Restored? (522 comments)

I tried using Ubuntu briefly (cloud-computing stuff) but I found upstart very very difficult to work with, and, if I recall correctly, buggy.

I've never attempted to use Ubuntu since.

about 2 months ago
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Microsoft On US Immigration: It's Our Way Or the Canadian Highway

the_povinator Re:Fine! (365 comments)

I hate Microsoft as much as the next guy, but he has a point here.

Microsoft is a multinational corporation - albeit one that started in the US - and they have the perfect right to locate their operations wherever suits them. Immigration policies are a valid reason to make these decisions. I don't understand why American think it's their automatic right for all activities of companies like this to be located on their soil.

about 3 months ago
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New Study Projects World Population of 11B by 2100

the_povinator Re:Not a problem... (326 comments)

I referred to the drawing down of aquifers.

It's true, my comments envisaged conventional farming, not the methods the Israelis use with poly-tunnels. So in the long run, your point is true.

about 3 months ago
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New Study Projects World Population of 11B by 2100

the_povinator Re:Not a problem... (326 comments)

Yes but that food is already being grown (and the water being overexploited), so settling people there would not add any new food.

Would be nice for deserts to be un-desertified, but I'm not sure that can be done cost effectively just yet.

Dan

about 3 months ago
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New Study Projects World Population of 11B by 2100

the_povinator Re:Not a problem... (326 comments)

But those places are mostly not suitable for growing crops. What would people living there eat?

It's not physical space that limits populations, but the availability of resources such as food and water.

about 3 months ago
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Microsoft Files Legal Action Against Samsung Over Android Patent Dispute

the_povinator Re:Laugh all the way to the bank (83 comments)

Mod me flamebait, but I am with Microsoft on this one. As mentioned in their press release at http://www.microsoft.com/en-us..., Samsung agreed that "Microsoft will receive royalties for Samsung’s mobile phones and tablets running the Android mobile platform".

I don't know how Samsung thinks it can use Microsoft products without paying for them. I paid for my copy of Windows, and I expect Samsung to do the same.

about 5 months ago
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Rocket Scientist Designs "Flare" Pot That Cooks Food 40% Faster

the_povinator Re: Coanda effect? (204 comments)

I don't believe he has published, but you might be able to get something from his patent:

http://patentscope.wipo.int/se...

the patent seems to talk in terms of surfaces for heat transfer, and does not mention anything about turbulence. When he first mentioned to me that he was working on it, I conjectured that it was vanes or ribs of some kind, and he told me that it was more complicated than that and had to do with the interaction with turbulence (I forget whether to increase it or decrease it). However, nothing like that seems to be reflected in the patent. I'll ask him to respond here on Slashdot if he can.

about 5 months ago
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Rocket Scientist Designs "Flare" Pot That Cooks Food 40% Faster

the_povinator Re:Coanda effect? (204 comments)

Re-posting this not as AC...

Dr. Povey mentioned to me that turbulence had something to do with how it works. [He's my brother.]

about 5 months ago
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Data Mining Shows How Down-Voting Leads To Vicious Circle of Negative Feedback

the_povinator Re:BS (293 comments)

I read TFA, and unfortunately the research is very weak. They did not do a proper randomized study, they merely trained a classifier to figure out how good they thought a post was, and then divided up posts into pairs where their classifier thought they were the same but the feedback was different. They assume that their classifier is accurate, i.e. really reflects the goodness of a post. The rest of their research follows from this assumption.

If it had been a proper randomized study (i.e. roll a dice and up/down vote posts) I could have believed it.

about 7 months ago
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New Zero-Day Flash Bug Affects Windows, OS X, and Linux Computers

the_povinator Re:Long story short (178 comments)

What I wonder is-- how did the Syrians get hold of a zero-day vulnerability in Flash? I doubt they found it themselves. Did they buy it, or did the Russians give it to them?

about 8 months ago

Submissions

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Pentagon Shooter has Jihad code on Sourceforge

the_povinator the_povinator writes  |  more than 4 years ago

the_povinator (936048) writes "CNN reports that the pentagon shooter had a video on Youtube about "information currency" under the userid jpbedell. This seems to no longer be on YouTube but has been reposted on a white-power site (search Google for jpbedell youtube video). Following the links in the video we find the user jpbedell at sourceforge.net; he has another project, "openinsurgent". The text is quite innocuous, saying its aim is "to create an MMORPG simulation of low-cost defenses against futuristic, modern, and historical military opponents", but it ends with the Arabic text "inshah-allah" (God willing), and the tags applied to the project include (in Arabic text) "al-jihad" (jihad) and "Edl" (justice, I think). Looks like he was interested in Islamist violence."
Link to Original Source
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Pentagon shooter had Jihad code on sourceforge

the_povinator the_povinator writes  |  more than 4 years ago

the_povinator (936048) writes "The Pentagon shooter, J P Bedell, seems to have code on Sourceforge related to Jihad-- in Arabic text, this is one of the tags of the project. This project pre-dates 2007, judging from the text on the page. The text of the project also ends with (in Arabic text) "Inshah-allah", or God willing."
Link to Original Source

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