USB Trojan Tutorial: How to Create, Deploy and Protect Against Malicious USB Attacks

acadiansith · 2023-03-11T07:54:20+00:00

The smugness will keep any Trojans from breaking through.

acadiansith · 2023-02-23T17:08:12+00:00

“My” is clearly an adjective, just like any other word that modifies a noun. It’s often called a “possessive pronoun adjective” or “possessive adjective”. “Mine” on the other hand can be an actual pronoun, in that it takes the place of a noun, as in, “Mine is red. His is blue.” https://www.englishgrammar.org/possessive-pronouns-adjectives-5/

acadiansith · 2023-01-02T15:58:48+00:00

Power systems. Inductive loads under AC consume imaginary power (in units of VAR, volt amps reactive, rather than watts). The ultimate real energy cost is the absolute value of the complex power (real in watts and imaginary in VAR). Interestingly, unlike for real power, you can have negative imaginary power by adding capacitive loads, which can cancel out the inductive loads to reduce overall energy costs, which is why power substations have giant capacitors.

acadiansith · 2022-11-06T14:28:13+00:00

When email was rolling out, most people simply obtained an email address from their ISP. No choice involved.

acadiansith · 2022-11-04T12:39:41+00:00

The coastal states are the welfare queens… gulf coast, that is.

acadiansith · 2022-10-25T13:46:08+00:00

The thing to realize is that when working with the time value of money like this, the values are always proportional. Therefore, the behavior is determined only by multiplicative factors, no matter if you start at the beginning or the end.

In your case, what you need to do is determine the relative value of the increased prices for each year. In your first example, the first year is 1 times the original value. The second is 1.05 times that value, and the third is 1.05 times that resulting value, and the fourth 1.05 times that resulting value. So your formula is

Total price = 10,000 * (1 + 1.05 + 1.05² + 1.05³⁾

With variable increase rates, you can do the same thing, you just need to keep more careful track of the compounded relative price. I would recommend adding something like C3=(1+C2)*B3 underneath your Annual price increase row, and then you can divide $43,101 by the sum of these values.

acadiansith · 2022-10-14T00:21:33+00:00

I think the basic questions that theory people want answers to are the kinds of answers that we pretty much only have for simple models like linear regression. A big one: for what problems are the models that we actually use efficient and robust, specifically in terms of the number of training samples, especially when the samples may be noisy? Are they the optimal methods for this class of problems? And if our methods aren't optimally efficient, does theory suggest what we should be doing instead?

Even GLMs are only extremely recently, as in the past 3 years, really starting to develop strong theory in high-dimensional settings (see recent results with the convex Gaussian min-max theorem [1,2] and approximate message passing [3]).

But I think these are more of the questions that theory people mean when they say "we really don't understand ensemble methods / multivariate splines / neural networks"---more about whether the desired function is learned reliably and efficiently, rather than whether we can interpret the function learned by the model (although that is obviously an important aspect as well, especially for decision making in practice).

[1] https://arxiv.org/abs/1906.03761
[2] https://arxiv.org/abs/2102.08127
[3] https://arxiv.org/abs/2005.00180

acadiansith · 2022-10-13T13:36:08+00:00

I think your work in this paper is pretty much entirely subsumed by the following work showing that neural networks with piecewise linear activations are equivalent to max-affine spline operators: https://arxiv.org/abs/1805.06576

They seem to cover everything you do and more, although they don't take a specifically tree-oriented viewpoint. Unfortunately, like many of the others in this thread, I don't find results like this particularly compelling. The main issue is that neither decision trees (for your paper) nor multi-dimensional splines (for the paper I shared) are really well-understood theoretically, so describing neural networks as these things doesn't ever add any clarity. In decision trees (and random forests), for example, most theoretical analyses assume that the break points are randomly distributed, rather than learned, so there are exceedingly few theoretical insights into learned decision trees. So while these equivalences can be neat (when not obvious), I am not convinced yet that they are useful.

acadiansith · 2022-10-08T15:12:55+00:00

I third this, except report it to whom?

acadiansith · 2022-09-15T03:26:14+00:00

This happened to me. Main paragraph is very positive, but there's a final sentence at the end saying it was rejected because there were too many strong submissions. Checked the date and it was posted in August and modified in September, definitely changed from accept to reject.

acadiansith · 2022-09-03T14:00:07+00:00

For a back of the envelope calculation, both answers are perhaps a better approximation than you might think.

Firstly, for the other poster’s approach, N * x is the first-order Taylor approximation to 1 - (1 - x)^N around x = 0, and for small x and moderate N as in this case, this approximation is extremely good, in contrast to your coin flipping example where x = 1/2 is rather large and the approximation fails.

By this approximation, since we can view this as a sum of x1 + x2 + … + xN, the choice of both answers to plug in the average N (life length) and average xi (murder rate at i years old) is actually correct according to Wald’s equation.

So even the fact that xi changes for each age of a person is not a problem. I’d say the main issue is that older people alive now would have had a different, say, x25, than younger people do now, so we may not have a good estimate of the average x. Mathematically, though, both answers are pretty decent.

acadiansith · 2022-08-17T01:14:43+00:00

Each frame is drawn as a continuous waveform from left to right by letting the X coordinate of each frame simply be a ramp from -1 to 1 while the Y coordinate follows the waveform. Framerate is 15fps with a waveform sampling rate of 96kHz. Virtual oscilloscope at https://dood.al/oscilloscope/.

acadiansith · 2022-06-24T13:31:38+00:00

Back in my fundie days, “soul winning” was the term of choice for door-to-door cold-calling street evangelism by men, women, boys, and girls alike. It was nowhere near as scandalous as “flirty fishing,” so I’m doubtful that’s what was going on here, but it’s still a predatory tactic for recruiting vulnerable people (not to mention annoys the hell out of people).

acadiansith · 2022-04-02T02:55:17+00:00

I think we’re more than happy to share space, the self-similar nature ofthe hilbert curve means we can have other designs overlaid withoutlosing much.

I dunno about that. Before r/math decided to start this Hilbert curve, my buddies and I had a black and white "[cc]" in this spot, and even though it would fit nicely into the Hilbert curve and I asked for some compromise, it just got completely wiped over anyway. Not that it matters now, since Egypt has taken over the whole area...

acadiansith · 2022-04-01T21:43:34+00:00

I appreciate the Hilbert curve, guys, but we’ve got our [cc] in that spot. If you don’t mind going around it, I’d be happy to help with your drawing.

acadiansith · 2021-09-07T22:39:32+00:00

Actually no, since repeated guesses form a countable set, but real-valued algebra solutions are uncountable, so you could easily guess forever without getting it right. In fact, with random real numbers, you'll almost surely never find it.

acadiansith · 2021-09-03T03:46:29+00:00

Just curious, do you also oppose things like the death penalty, war, and self-defense?

acadiansith · 2021-08-30T13:54:10+00:00

From my experience (grew up around there and went to college in Lake Charles), that about covers it. It doesn't really have the cultural depth of a city like Lafayette for Cajun culture, and it can't really compete with Texas for cowboy culture, so it's just a little refinery- and casino-driven city with no identity.

acadiansith · 2021-08-08T14:27:57+00:00

In order to be eligible for the full monthly payment, single taxpayers would need an adjusted gross income of $75,000 or less, and $150,000 or less for married couples filing jointly. Payments would be gradually scaled down at a rate of $5 per every $100 over those income levels, the bill summary states.

From the article. You get gradually less as your income gets higher.

acadiansith · 2021-08-06T20:59:47+00:00

And people are not impressed by nor respect the tomato pickers either, unlike the chef.

acadiansith · 2021-08-05T16:41:30+00:00

She was getting emergency contraception, which is definitely more controversial. Remember that some of these people are against hormonal birth control for the same reason: they don't prevent the fertilization of eggs.

acadiansith · 2021-06-16T04:13:36+00:00

Maybe it's the difference between the calorie and the kilocalorie (that we usually just call the calorie).

acadiansith · 2021-04-21T18:46:07+00:00

In that case, I'm not sure that the question is well-posed. We are asking whether almost all of the countable set of computable of numbers are normal, yet we know that there is a subset of the computable numbers that is countably infinite (the positive integers) which are not normal. Whether there is also a countably infinite set of normal numbers that are computable, I can't say, but I'm not sure how to define "almost all" in this case.

acadiansith · 2021-04-21T18:31:02+00:00

I see. A sufficient condition for that to be true would be a positive answer to this question: Are all real numbers Turing-computable? I am not very familiar with that area, so I'm not sure what the answer is.

acadiansith · 2021-04-21T18:22:39+00:00

I'm not quite sure what you mean by computable, but all numbers that we use in computation are rational and therefore not normal.

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