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by ymous
July 23rd, 2014, 2:26 pm
Forum: Careers Forum
Topic: Is algo trading a load of rubbish?
Replies: 57
Views: 8579

Is algo trading a load of rubbish?

<t>QuoteOriginally posted by: GamalImmanuel Kant said: "In any special doctrine of nature there can be only as much proper science as there is mathematics therein."Being mathematical is necessary for being scientific, but not sufficient. You also need to be able to falsify it based on experiments. T...
by ymous
July 22nd, 2014, 11:24 am
Forum: Careers Forum
Topic: Is algo trading a load of rubbish?
Replies: 57
Views: 8579

Is algo trading a load of rubbish?

<t>QuoteOriginally posted by: jimmybobQuoteOriginally posted by: barnyNo. I am not confusing the two. HFT is mostly about using your knowledge of flow to front run exchanges. That really is value-less to society. Algo trading is using algorithms to make trading decisions, usually automated. At the e...
by ymous
April 25th, 2014, 3:42 pm
Forum: Careers Forum
Topic: Quit PhD for Quant
Replies: 32
Views: 9880

Quit PhD for Quant

<t>QuoteOriginally posted by: rmaxQuoteOriginally posted by: ymousQuoteOriginally posted by: rmaxQuoteOriginally posted by: ymousPhDs are managed by non-PhDs.Correct. But managed by people who do not have PhDs rather than people who tried a PhD and then quit....So you're saying that, 2 years into Ph...
by ymous
April 25th, 2014, 12:06 pm
Forum: Careers Forum
Topic: Quit PhD for Quant
Replies: 32
Views: 9880

Quit PhD for Quant

<t>QuoteOriginally posted by: rmaxQuoteOriginally posted by: ymousPhDs are managed by non-PhDs.Correct. But managed by people who do not have PhDs rather than people who tried a PhD and then quit....So you're saying that, 2 years into PhD, he's worse off than if he didn't start PhD at all. Shouldn't...
by ymous
April 24th, 2014, 10:25 pm
Forum: Careers Forum
Topic: Quit PhD for Quant
Replies: 32
Views: 9880

Quit PhD for Quant

PhDs are managed by non-PhDs.
by ymous
October 22nd, 2013, 12:10 pm
Forum: Brainteaser Forum
Topic: Soccer team win/loss percentages
Replies: 15
Views: 8310

Soccer team win/loss percentages

We need to know the probability of A and B playing:P(both play), P(only A plays), P(only B plays), P(neither plays)Of course, the sum of these four should be one. So three additional degrees of freedom.
by ymous
October 21st, 2013, 11:41 am
Forum: Brainteaser Forum
Topic: Pdf curve for normal distribution
Replies: 14
Views: 7578

Pdf curve for normal distribution

Did you mean y-axis = probability density?
by ymous
October 14th, 2013, 11:48 am
Forum: Brainteaser Forum
Topic: Can we solve the problem by maringale?
Replies: 5
Views: 7297

Can we solve the problem by maringale?

Nice. The answer was right there!
by ymous
October 10th, 2013, 12:40 pm
Forum: Careers Forum
Topic: Derivatives vs algos
Replies: 8
Views: 7710

Derivatives vs algos

Happy to make you laugh.
by ymous
October 10th, 2013, 12:00 pm
Forum: Careers Forum
Topic: Derivatives vs algos
Replies: 8
Views: 7710

Derivatives vs algos

Derivatives pricing and algo trading seem to be the two major areas for quants. I'm sure some people here have experience in both. Which do you find more interesting? Is it the elegance of the arbitrage-free pricing theory or the dynamics of market microstructure that appeals to you more?
by ymous
October 2nd, 2013, 1:19 pm
Forum: Brainteaser Forum
Topic: Can we solve the problem by maringale?
Replies: 5
Views: 7297

Can we solve the problem by maringale?

Not sure how to do that, but at least we have [1- (q/p)^i]/[1 - (q/p)^N] --> i/N as p --> q.
by ymous
September 30th, 2013, 4:10 pm
Forum: Brainteaser Forum
Topic: Devil's penny
Replies: 10
Views: 9738

Devil's penny

<t>OK, I get the same answer, but just wanted to provide more rigorous reasoning.If s < S/2 after opening n boxes, then the expected gain for (n+1)th box is (S - s) / (N - n) - s / (N - n) = (S - 2s) / (N - n), which is already positive. So one must continue regardless of the option to keep playing ...
by ymous
September 19th, 2013, 12:49 pm
Forum: Brainteaser Forum
Topic: Devil's penny
Replies: 10
Views: 9738

Devil's penny

<t>QuoteOriginally posted by: Vanubis1OKCall S the sum of the box value S=55 in your case and N the number of boxes (N=11)If you have collected s by opening n boxes, open another box will give you:* (S-s)/(N-n-1) with a probability (N-n-1)/(N-n)* -s with a probability 1/(N-n) So you continue if (S-s...
by ymous
July 9th, 2013, 11:22 am
Forum: Careers Forum
Topic: Additional computer languages
Replies: 34
Views: 10479

Additional computer languages

python
by ymous
July 5th, 2013, 2:12 pm
Forum: Careers Forum
Topic: Hedge fund - low salary
Replies: 14
Views: 10750

Hedge fund - low salary

Can you ask for sizeable guaranteed bonus at least for the first year?
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