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cavilling_elite

167 karma · joined October 30, 2010

An almost-young aspiring scientist working his way through electromagnetics, programming, and other interests. Contact at jason dot sidabras at google's mail service
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cavilling_elite··on New technique probes 'functional networks' in LLM with fMRI statistical analysis
Researchers have adapted techniques from functional neuroimaging to map internal "functional networks" in large language models. By presenting the model with task-based prompts in an on/off pattern, they identified distinct networks preferentially activated for domains like political science, radiology, and paleontology.

They found the greatest overlap between networks for radiology and pathology, suggesting shared semantic representations. The activated connections were fairly consistent across runs with similar tasks, and strongly predicted the prompted task in held-out experiments.

This offers a new way to peel back the black box of large models and understand their hidden organizational logic. It could help explain failures, selectively target parts of a model for fine-tuning, or monitor "alignment" during inference. The techniques parallel those used for decades to map functional networks in the brain.

cavilling_elite··on Replace TrueCrypt – Candidate alternatives
I think it is the flippant manner in which they expose the security concern and recommend a product few would actually use.
cavilling_elite··on Gillette's New Razor Could Overturn Its 100-Year-Old Business Model
I cut myself significantly less with a single blade than I ever did with the disposables. Disposables breed laziness for "it's good for one more shave" syndrome. And you tend to get razor burn frequently. With a single blade "wet shave" you tend to take a bit more time and make shaving an art and "manly" routine. Emphasis technique and you actually feel the difference of blades and wearing. I suggest purchasing an amazon tester pack of blades, eventually you will find ones that work. You can get a decent weight Parker shaving kit with a badger hair brush for the amount of a few blade packs, but they last forever.

There are tons of videos online with technique.

Stick with it for a few weeks until your skin adjusts to the awesomeness of the shave. Invest in a good alcohol free aftershave moisturizer.

cavilling_elite··on The Government is Silencing Twitter and Yahoo, and It Won't Tell Us Why
As an American the phrase "chiefly freedom" sends shivers down my spine. I'm sure you don't mean it as such, but it sounds so narrow minded and "rah rah" patriotic. I wish America was "chiefly education and free thought".
cavilling_elite··on Dozens of teenagers are now tweeting bomb jokes to American Airlines
I'm more upset on how blatantly racist the initial and other tweets seem.
cavilling_elite··on Amazon Fire TV
No rechargeable remote? Should of had a simple dock on top to charge the remote and another dock purchased with the game pad. No need for batteries.
cavilling_elite··on Is the U.S. stock market rigged? [video]
I always thought that the digital stock market should take a page from the cryptocurrencies and add a digital proof-of-work that will cap the speed of a transition. A "temporal tax" would keep the system from wild swings and reactions, similar to what we saw a few months back.
cavilling_elite··on Durr: A shivering unisex bracelet that investigates our perception of 5 minutes
Doesn't work well in my 9.4 T MRI environment :)
cavilling_elite··on Why are software development estimates regularly off by a factor of 2-3?
The joke between us engineers at work is to estimate the project time, then multiply by pi.
cavilling_elite··on Google knows nearly every Wi-Fi password in the world
I think most of your repliers are forgetting about Blackwater. (/tinfoil-hat)
cavilling_elite··on Defeated
see above, pls.
cavilling_elite··on Defeated
As far as I can tell, the x-ray works similar to the dentist office. While, the basic idea behind the active backscatter mm-wave is similar to radar. It is my understanding that the majority of the TSA owned mm-wave machines are active. You have a number of antennas that pulse and listen. I would need to look up the specs, but I suspect they are in the 75 GHz range which is above the oxygen absorption (60 GHz) but below more expensive technologies in the 100+ GHz range. There are a number of "cheap" technologies that have emerged for radar in this range on the market at the 75 GHz frequency, and I think it is being driven by this technology.

All in all, the mm-wave at the powers they use are harmless. The depth of penetration to the skin is sub millimeter and your body dissipates any heat that would be generated. It is most likely a pulsed system and your overall exposure time is small. But, the most fragile part of your body is your eyes. The capillary blood vessels are much smaller and wouldn't dissipate the heat as readily as the body. And it is my professional opinion, that overtime, it could do damage to your lenses and cause cataracts. I would love to get a grant to study these effects.

As far as I have seen, there are no IEEE specs on specific absorption rates (how much heat energy is created by being irradiated with a source), they are typically categorized as "body", "head", and "appendages". If anyone has information on specific body parts (I personally need it for teeth and fingernail work I do) I would be very interested in the FDA specific absorption rates.

When you close your eyes your eyelids will dissipate any heat generated and the mm-wave will not penetrate through the skin. One interesting test would be if anyone could get what the images look like, and see if you can tell where the eyes are. If there there is a difference in the backscatter, that would mean that the mm-wave is being absorbed differently in the soft tissue of the eye.

In my professional opinion, just close your eyes. If you fly once a year, it probably isn't a big deal. If you fly all the time, I would close my eyes.

cavilling_elite··on Defeated
Agreed, I opt-out every time I can. This gives me a chance to talk to the TSA agent. This puts human faces on the, typically, blurry screen of human mass.

When they ask why I opt-out, I explain about the numerous times I have filled out the comment cards mentioning the real danger of cataracts because you don't tell people to close their eyes. Explain that my engineering background fully understands both the x-ray and mm-wave technology. I explain that even the weak, yet not disclosed, powers of mm-wave back scatter can, over time, cause damage to your eyes.

This gives them something to think about, that isn't the typical "freedom" complaint they hear. I hope, one day, to overhear a TSA agent tell people to close their eyes.

First, the threat to your eyes is real. But, my underline reason is by making people close their eyes it will give a sense of vulnerability that the current systems don't have. I am hoping, one day, that this is the tipping point needed for more people to opt-out.

An engineer can dream.

cavilling_elite··on NSA loophole allows warrantless search for US citizens' emails and phone calls
I don't think this is the case.

But on a smaller scale: The Bush administration would put out a piece of legislation that was a hyperbole, watch the public/democrats react, then ram through a "less worse" bill in the guise of compromise.

cavilling_elite··on NSA To Lay Off 90 Percent Of Its System Administrators
For all of those who are commenting about sysadmins grabbing as much data as they go out, I highly suspect that all of the newly unemployed sysadmins were or have been escorted by armed guards.
cavilling_elite··on U.S. directs agents to cover up program used to investigate Americans
I've long thought this, but never read someone say it so starkly. My heart dropped with every sentence.

Any suggested reading?

cavilling_elite··on U.S. directs agents to cover up program used to investigate Americans
The apathy is the scary part. I fear it would take a mass roundup of people before the "we need this because of X" people might start questioning it.

OTOH, it may be mental (illness?) for people to blindly follow authority.

cavilling_elite··on Members of Congress denied access to basic information about NSA
opencongress.org exists. but that doesn't mean that Congress looks at it.
cavilling_elite··on Defense subcontractor posted a job listing for XKEYSCORE 2 weeks ago
The irony of the Internet, just as easy to make an NSA profile as it is for a person tracking.
cavilling_elite··on More Encryption Is Not the Solution
This is feasible today. Although it takes a decent skill set. Open source communities like OpenCore.org have enough FPGA architecture to build your own RISC computer from scratch. I suspect as FPGA's become more popular and speeds improve the hacker community will move towards one-off computers they made themselves.

This coupled with your idea of 3d printing for casing is interesting.

cavilling_elite··on NSA Phone Snooping Cannot Be Challenged in Court, Feds Say
So one could send out a bunch of dummy encryption files, get caught, get in jail, then show that the files were empty, then sue?

Sounds easy, just hope one doesn't land in gitmo!

cavilling_elite··on LINQ Ruined My Favorite Interview Question
Agreed, if I was looking for a candidate that will always "reinvent the wheel" then I would want them to implement from scratch. I find it perfectly valid for the interviewee to say "Hey! I wrote a module for <language> for this exact purpose! Want to check out my github page?".
cavilling_elite··on Don't Even Think of Using Encryption Software to Escape NSA Scrutiny
Oh great. That would mean this is the lesser evil of the other potential scandals.
cavilling_elite··on Don't Even Think of Using Encryption Software to Escape NSA Scrutiny
Or better yet everyone capable start a p2p service with email as the protocol and millions of random encrypted and nonencrypted junk files to an entire web of ever increasing spam emails.
cavilling_elite··on NSA Implementing 'Two-Person' Rule To Stop The Next Edward Snowden
I didn't take it personal :)

I completely agree that "the children" is a minor blip in the entire program, but it is a blip that has a lot of emotional response attached to it.

I again agree that current laws can't even compare to something of this scale. But laws about minors and their entrapment or protection might be enough to waken the laymen on this apparent abuse of power.

cavilling_elite··on NSA Implementing 'Two-Person' Rule To Stop The Next Edward Snowden
The "second saddest part" makes me realize why all of the government agencies get C's or less in the NIST tests for securing systems. When the NSA can't even employ their own in-house sysadmins, there is no real hope for defense against political espionage.

If Snowden was the first to leak information, who was the first to sell it? The way Snowden describes the access seems like a joke.

cavilling_elite··on NSA Implementing 'Two-Person' Rule To Stop The Next Edward Snowden
> minor children

You bring up a point (perhaps frivolously)that I haven't seen before. With many many minors owning cell phones, where does the court stand on collecting meta-data from children. The law is very clear when it comes to crimes on how minors are treated, this seems to make assumptions without guardian approval or regards to their status as minors.

cavilling_elite··on US entertainment industry to Congress: make it legal for us to deploy rootkits
I think what worries me the most is reading between the lines. As in, "we've already been doing this, it should work, please make it legal." Would be interesting if the bill had retroactive legalese.

Additionally, can consumers claim DMCA violations?

cavilling_elite··on Cards Against Humanity has made more than $12 million
Please explain the second way to play! I am completely missing this! Is it in the ruleset?
cavilling_elite··on The OpenBSD 5.3 Release
Wasn't there some problem with KDE4 highly tied to dtrace and other kernel space mappings that OpenBSD does not have?
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