vegabook

77 ms·

691.
by vegabook 11y ago
Okay. This post: http://www.johnmyleswhite.com/notebook/2013/12/22/the-relati... had worried me a couple of years ago. JMW shows that vectorized was much slower also in Julia (though still both faster th
692.
by vegabook 11y ago
I heard that the vector operations were very slow though. Has this changed?
693.
by vegabook 11y ago
Do you mean they use Python because it's faster? yes sure. But then, just use scala. 10x faster again. With a REPL. Perhaps I should clarify, I'm talking mainly time series and/or data which is vectorizable. Python is bette
694.
by vegabook 11y ago
Python's main problem is that it's moving in a CS direction and not a data science direction. The "weekend hack" that was Python, a philosophy carried into 2.x, made it a supremely pragmatic language, which the data scie
695.
by vegabook 11y ago
or Scala, Clojure, or indeed C. R's great strength is finding the interesting bits of the data. Testing the Algo. Doing the R&D basically. Better than Python. Once that's done, why stop at Python? If your game is production,
696.
by vegabook 11y ago
I have to agree that Python is more powerful, and I am indeed doing more and more in Python. Python was my first language, before R. However when the dataset is medium sized (i.e.: fits into your computer's memory / 2) R crushes P
697.
by vegabook 11y ago
HFT on average narrows the bid offer. Retail (i.e. small) investors benefit. Human market makers lose out. Without HFT your little old lady retirement angel would be paying much more to a rapacious human market maker. The point is that it i
698.
by vegabook 11y ago
You have summarized it perfectly.
699.
by vegabook 11y ago
Retirement savers are not churning their portfolios and are thus not paying anything to HFT. Not a strong argument. Making money making markets takes risk capital. i.e. Money. The money makes more money. Fact. I agree. But don't blame
700.
by vegabook 11y ago
I hope you understand that the thievery has been happening for centuries, millennia. There is no other way to gauge real supply and demand than to put buy and sell orders into the market yourself. HFT is doing at ultra-high speed what hum
701.
by vegabook 11y ago
I've taken a liking to a lot of what Microsoft is doing. I like the open source efforts, I like the RX libraries, the hardware looks great, to my mind the Metro interface is actually better than IOS/Android. I even like Windows 10
702.
by vegabook 11y ago
Completely agreed mfoy_... I would hate to have my freedom of information curtailed by anybody, and do not wish it upon any individual or nation. Yet still...a cottage in the hills. This gives me personal freedom, but it does not give me ac
703.
by vegabook 11y ago
maravilloso, and welcome to our brethren in Cuba! But there is still something sad about the internet reaching all of the planet. I kinda liked the idea of a place, a mythical place, an unspoiled place....untouched by rent-seeking Search,
704.
by vegabook 11y ago
There is one horror even greater. That is to wish the politicians in my country onto the bed bugs.
705.
by vegabook 11y ago
Bed bugs can be a major problem. They thrive in the wiring looms and complex mechanical motor systems of modern airline seats, especially the flatbed types in the higher classes. I have personally experienced a bed-bug-ridden long haul flig
706.
by vegabook 11y ago
yes very nice hardware, both the phone and the surface book. But the real standout here for me is continuum. This takes the logical next step where all the heavy lifting compute / storage happens remotely, and your "PC" doesn
707.
by vegabook 11y ago
haha this woke my neighbours.
708.
by vegabook 11y ago
Funny you should mention a subject which is close to my heart :-). http://stackoverflow.com/questions/6023179/anti-aliasing-in-...
709.
by vegabook 11y ago
You've managed to make even ggplot's already excellent default outputs look even better. Love the darker grey gridlines, the unified grey panel background which includes the headline, the alpha < 1 so the grid shows through, an
710.
by vegabook 11y ago
Man those charts are beautiful, and this coming from someone who knows R graphics and ggplot pretty well. Please may I ask a) what platform (OS/X / Windows / Linux?) and b) what are the axis and title fonts?
711.
by vegabook 11y ago
Ah yes. Land. Until it's confiscated. Or taxed (window tax? Second home tax? Landlord tax?). Do you own the land? Or do you own a piece of paper from the government that says you own the land? A piece of paper whose credibility depends
712.
by vegabook 11y ago
For many years the Russian Ruble was pegged against a basket of 55% USD and 45% EUR. So at the time you could have had your wish by buying RUB. Until it devalued. In the 90s the Polish zloty was pegged against a basket of 4 or 5 currencies,
713.
by vegabook 11y ago
What a beautifully presented article. So beautiful, in fact, that I didn't feel like reading the text.... I just wanted to move on to the next picture.
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by vegabook 11y ago
I can only hugely commend the creators. Interactive charts for pedagogical purposes are a big win for me, as I work in a fairly complex domain where a moving picture can make all the difference between understanding immediately, and having
715.
by vegabook 11y ago
You're looking for convergence, and so far Ubuntu touch does not offer it. It's the main selling point but we're still waiting...
716.
by vegabook 11y ago
Android basically forces you to use Java. Enough said.
717.
by vegabook 11y ago
In my own case, the attraction of Ubuntu Touch is to actually ship an entire semi-custom device with custom software for vertical use cases, mainly in B2B. Different order of magnitude of revenue / profit margin, with much smaller unit
718.
by vegabook 11y ago
I've been running the Ubuntu Aquaris E5 since it launched. The main reason I want to stick with it through the difficult early time (browser crashes continuously), is that I want a proper Linux environment on which to develop applicati
719.
by vegabook 11y ago
I actually didn't realise that the energy extracted by a turbocharger, more than any residual gas expansion from still-burning fuel (if any), is also dropping the temperature of the exhaust gases. So we are extracting some of the hea
720.
by vegabook 11y ago
why do most power stations use turbines and not pistons? There is no need for power to mass ratios there?

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