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by FaridMoussaoui
October 10th, 2019, 6:17 pm
Forum: Off Topic
Topic: Nobel Price 2016
Replies: 140
Views: 7527

Re: Nobel Price 2016

Didier Queloz found the first exoplanet while he was a PhD student. He was ashamed to tell his supervisor Michel Mayor about it as he thought the instruments were not well calibrated or a bug in the software. He waited weeks before telling him. He sent him a fax (Mayor was on sabatical in Hawaii) te...
by FaridMoussaoui
October 10th, 2019, 3:40 pm
Forum: Programming and Software Forum
Topic: Python tricks
Replies: 226
Views: 24231

Re: Python tricks

that's python IDE is easier
by FaridMoussaoui
October 10th, 2019, 2:01 pm
Forum: Programming and Software Forum
Topic: Python tricks
Replies: 226
Views: 24231

Re: Python tricks

What stuff?

Use for example pyCharm and stay away from VS
by FaridMoussaoui
October 9th, 2019, 10:38 pm
Forum: Numerical Methods Forum
Topic: Universal Approximation theorem
Replies: 112
Views: 11001

Re: Universal Approximation theorem

So it's an advert for a Swiss AI research-paper bot.
Leave us alone!
by FaridMoussaoui
October 7th, 2019, 10:58 pm
Forum: Programming and Software Forum
Topic: Open binary file format
Replies: 19
Views: 2442

Re: Open binary file format

Until you do the experiments, can't conclude.

Bethel and al, analysed the 2010 Flash Crash using HDF5 as their internal data format with GB of data on HPC systems.

https://papers.ssrn.com/sol3/papers.cfm?abstract_id=1939522

As usual, you can get the document throught sci-hub.
by FaridMoussaoui
October 5th, 2019, 10:24 pm
Forum: Programming and Software Forum
Topic: Python tricks
Replies: 226
Views: 24231

Re: Python tricks

 File "C:\Users\Roman\Anaconda3\lib\site-packages\pandas\core\generic.py"
You're using someone else's account !!!
by FaridMoussaoui
October 5th, 2019, 6:07 pm
Forum: Programming and Software Forum
Topic: Python tricks
Replies: 226
Views: 24231

Re: Python tricks

anyway, if he applied the bool method to an array with a length > 1, he will got an error.
by FaridMoussaoui
October 5th, 2019, 3:36 pm
Forum: Programming and Software Forum
Topic: Python tricks
Replies: 226
Views: 24231

Re: Python tricks

I "like" this inconsistency between how core Python and Numpy assign a boolean value to a list containing one element equal zero: bool([0]) Out[94]: True bool(np.array([0])) Out[95]: False by the very definition of the bool method:  "objects of Classes which has __bool__() or __len()__ method which...
by FaridMoussaoui
October 5th, 2019, 2:43 pm
Forum: Book And Research Paper Forum
Topic: Super quants
Replies: 13
Views: 887

Re: Super quants

A note on odds in the cattle futures market by Seth, Jackson and Steagall

hmmm did they use Gaussian based tests (not access to the full paper from the remote area I am now). 
You can have it from anywhere with sci-hub.
by FaridMoussaoui
October 1st, 2019, 11:28 pm
Forum: Off Topic
Topic: Random photo's
Replies: 1851
Views: 78796

Re: Random photo's

What you see here?

Image
by FaridMoussaoui
October 1st, 2019, 7:56 am
Forum: Off Topic
Topic: Political Correctness is Dead! Time to say what you really think
Replies: 215
Views: 10519

Re: Political Correctness is Dead! Time to say what you really think

Why (some) poeple still don't realise that NI is a remnant of british colonialism?
by FaridMoussaoui
September 29th, 2019, 3:52 pm
Forum: Book And Research Paper Forum
Topic: Super quants
Replies: 13
Views: 887

Re: Super quants

The strategy: your don't receive a margin call from your broker when you have a heavy loss (-$100k on a "small account") and wait until you are right on the trade to collect your profit.
by FaridMoussaoui
September 25th, 2019, 12:50 pm
Forum: Politics Forum
Topic: UK and the EU: In or out?
Replies: 2023
Views: 75529

Re: UK and the EU: In or out?

Das Matterhorn ist das Wahrzeichen der Schweiz.
by FaridMoussaoui
September 22nd, 2019, 5:15 pm
Forum: Brainteaser Forum
Topic: inequality (a quickie)
Replies: 18
Views: 36567

Re: inequality (a quickie)

Computing the gradient find the minimum or the maximum of the function. We are looking for a minimum (of a positive function).
by FaridMoussaoui
September 22nd, 2019, 4:32 pm
Forum: Brainteaser Forum
Topic: inequality (a quickie)
Replies: 18
Views: 36567

Re: inequality (a quickie)

We can split the problem. The firs part, just use the arithmetic and geomtric mean inequality ([$]  (x_1 + x_2 + x_3) \geq 3 \sqrt[3] {x_1 x_2 x_3} [$]) with [$] x_1 = \frac{x^2}{y z}, x_2= \frac{y^2}{x z}, x_3 = \frac{x^2}{x y} [$] then use the cubic root of the inequality to obtain the first part....
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