that 3/4 of people would pick up a penny from the ground? I would pick up a piece of trash from the ground, but that doesn't mean I want trash.
It could be described as a variant of the Traveling Salesman problem, where each node is a mower-sized swath of grass and your object is to visit very node, returning to the starting one...
So, was she impressed?
> It really bothers you? How? Please tell me how I've ruined your shopping experience.
Many of these are obviously jokes, fine. I think what the OP was getting at is that there are nefarious purposes to which this can be put. Imagine if you want to "attack" a competitor, and make up a bunch of poor reviews (there have been court cases about this kind of thing, in this case about libel). Or, you could just boost your own product, or try to game the Amazon recommendation system to get your product recommended based on the fact that you "like" many popular items in a segment, plus this product.
Despite research on the topic, it's not going away anytime soon, just because it's obviously pretty hard to figure out when an "attack" on the system is happening (though there are some clues that have been used in automated detection, e.g. lots of similar rating events in a row, accounts used only to rate a few products, etc.).
They should be sure to ask for the digital negatives. Without those, I'm sure nobody will be able to disseminate these documents any further!
Compression is just the discarding of irrelevant or less relevant information. With images or video, that means keeping the perceptually meaningful content and discarding the rest. An improvement might come about if the encoder was removing irrelevant variations (noise), or smoothing out unnecessary details away from perceptually salient objects (making them easier to see).
It's pretty hard to make an image encoder that maintains the important perceptual qualities of every possible image, so IF their encoder is good, maybe they just didn't test it on the whole range of stuff they eventually used it on.
I sort of agree. I think it's "legendary customer satisfaction" that TFA is thinking of (that's where Apple has always lead, anyway). If you have a Mac you may have the same lowish rate of problems (many of which are possibly component problems and not much to do with Apple), but statistically speaking you're more satisfied overall, which is probably driven by the large fraction *without* problems.
The conclusion that a train may be "less green" than a plane is somewhat dependent on what you look at. The article notes that this is because the particular train they looked at, the Green Line in Boston, uses local power that is being generated from carbon-emitting sources. Actually, even that is only part of the story... you can read the original research (http://www.iop.org/EJ/article/1748-9326/4/2/024008/erl9_2_024008.html) if you have some kind of institutional subscription to Environmental Research Letters. It shows that the energy use is actually lower or the train, and that another train (SF muni) does beat the "large aircraft" (the small aircraft is much worse).