gd1

30 ms·

241.
by gd1 13y ago
Mind you, if they lower tick sizes, that means a lot more order cancellations. A market-making algo is simply a control system, taking in a set of inputs and spitting out a fair price that it is willing buy/sell something for. The nu
242.
by gd1 13y ago
It reduces the friction in every single financial transaction. There used to be considerably more people making markets, at first yelling at each other across the pit, then manually clicking on the screens, now automated out of existence
243.
by gd1 13y ago
Difference is, most models can be validated against reality. I might model a car crash impact in LS-DYNA, then I eventually crash the real thing and compare. Unless you have a spare Earth lying around and a few centuries, then climate mod
244.
by gd1 13y ago
Can you explain the mechanism by which billions of people will drown? Displaced perhaps, but drown? I'm fascinated. Are they incapable of, say, walking inland a little bit?
245.
by gd1 13y ago
>Are you saying that global temperatures aren't rising? They haven't for the last 15 years, so that may be exactly what he is saying. >Is the arctic icecap not rapidly getting smaller? It is, but is the antarctic icecap not
246.
by gd1 13y ago
Nuclear winter, Club of Rome, ozone depletion, acid rain, chicken flu, Y2K, SARS, human sacrifice, cats and dogs living together...
247.
by gd1 13y ago
There are five current street circuits. You missed Melbourne, Valencia and Montreal.
248.
by gd1 13y ago
Basic biology? Are you seriously asking or just being obtuse? Do you know what the world looked like the last time we had 1000+ ppm CO2? Teeming with plant life. C3 plants were facing extinction if CO2 levels dropped any further than th
249.
by gd1 13y ago
In what possible way can freeing fossilized carbon back (where it came from) into the carbon cycle "reduce long term habitability of the planet"?. It may make it awkward for some low lying cities in the short term, but long term
250.
by gd1 13y ago
Coldtea: He is saying that there are obvious lurker (or "confounding") variables. It could be that not getting a degree is caused by being poor (or black, etc.) AND that not getting a job is caused by being poor. So not having a
251.
by gd1 13y ago
Because it won't be overseen by the most incompetent and corrupt federal government in Australian history?
252.
by gd1 13y ago
Seems fair. Some quick maths says that 200 billion dollars (just you watch it blow out) / 30 million people = roughly $6600 per man, woman and child living in Australia. Probably $12k per taxpayer. Seems fair to make the user pay fo
253.
by gd1 13y ago
"Let them eat iPad" http://www.forbes.com/sites/afontevecchia/2011/03/11/ny-feds...
254.
by gd1 13y ago
I disagree. You could argue that a musician probably thinks "I have to play a D# for one and a half beats" as well. Or they can draw a dotted quarter on the sheet. We have symbolic languages for a reason - they are, once learnt,
255.
by gd1 13y ago
Black holes are capable of bending light back towards us: http://rein.pk/gravitational-lensing-to-observe-ancient-eart...
256.
by gd1 13y ago
And? How does that make it any less useful to have the existing code as a guide?
257.
by gd1 13y ago
His 'second jury' were comical. "Most were surprised by how little he had taken in relation to the whole: eight megabytes in a platform that consisted of an estimated one gigabyte of code. " Really? One gigabyte of code
258.
by gd1 13y ago
Don't mistake looking complex for being complex. These languages have very simple and clean grammars (or they'd fall apart quickly), which is quite a contrast to the dog's breakfast that is modern C++. A simple grammar = si
259.
by gd1 13y ago
I find it much easier to read some Q/KDB I've written earlier than the equivalent C++ or C#/Java. For three reasons: 1) It is extremely terse. A small block of code will do what pages of boilerplate class definitions, inter
260.
by gd1 13y ago
He said it was 5% for mothers that have 14 drinks per week or more. It will be much less (if not zero) for someone who has 2-3 drinks a week, which is his point.
261.
by gd1 13y ago
If you want to buy 1000 bitcoins then cross the spread, take out the best offer, and buy 1000 bitcoins. If, on the other hand, you want to stick a bid into the market in the hope that someone else will cross and take your (lower) price ins
262.
by gd1 13y ago
Even worse, not all lines of code are equal. Across languages, but also within them. C/C++ can be terse or verbose depending on style and the subset of features employed.
263.
by gd1 13y ago
Nine tenths as much to be correct. From wiki: The word decimation is derived from Latin meaning "removal of a tenth". A cohort selected for punishment by decimation was divided into groups of ten; each group drew lots (Sortition), and the
264.
by gd1 13y ago
>In exchange for the risk of getting caught glad-handed during severe events the specialist was given the privilege of making a spread the rest of the time. No, they had old fashioned ways of withdrawing their liquidity. Not answering
265.
by gd1 13y ago
No. It's an uncertain Bayesian world. You evaluate on the probabilities. Given a 20% chance that tweet is true, then what is the S&P worth now? Less. So you act. You don't sit around waiting to find out...
266.
by gd1 13y ago
Actually it isn't dumb. If you had to assign a probability to that tweet being true when you read it, then what would you say? 20%? 40%? So yes, given that there is a real probability that the markets are about to tank, that would effect
267.
by gd1 13y ago
Why on earth would you want market makers out of business?
268.
by gd1 13y ago
What does this have to do with HFT? If I had someone (man or machine) managing my money and a credible source had reported two explosions at the White House, and there is some chance it could be true, I would like them to incorporate and r
269.
by gd1 13y ago
GDP isn't your income, tax receipts are. Tax receipts as a percentage of GDP are about ~25%, so 100% debt/GDP is 4 years worth of debt, not 1.
270.
by gd1 13y ago
Exactly what kind of "austerity" do you think is happening in Britain? Government spending has gone up. Saying something doesn't make it true.

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