Happy Birthday, the_bigg!

[Kulyok]

Do you know that you were born on the Day of Russia? Or, rather, first you were born, then Soviet Union, ahem, "togo", and they decided to make your birthday the Day of Russia(formerly Independence Day). Now about ~150 million people are celebrating your birthday! Cool, isn't it?

[the bigg]

Oh. I'm not very special either: one of my friends and my high school Italian teacher were both born on the 14th of July, which is more widely reckognized as an important date in the world (curse you pompous French people!).

Trivia: if you take 25 random people, it's more likely to have two that share a birthday than not to find any (not counting 29 February and actual twins). If you take 100, it's more likely to have a triple Birthday than it isn't. I should mention it on the SHS Maths topic too.

Thanks for your good wishes BTW.

[Kulyok]

Oh. I'm not very special either: one of my friends and my high school Italian teacher were both born on the 14th of July, which is more widely reckognized as an important date in the world (curse you pompous French people!).

My classmate was born on this day, too, and I *wish* I didn't remember that! It's awfully hard to forget these little things now.

(And, yes, I wish I went to study probability theory instead of artificial intelligence. I mean, what _is_ there to learn about AI except that it can never exist? And probabilities are here, ripe and juicy and fun to use in everyday posts.)

Enjoy yourself.

[the bigg]

(And, yes, I wish I went to study probability theory instead of artificial intelligence.

Probability? I whipped up a program to study this statistically 
actually, 20 people = 2 birthdays is known as the Birthday paradox in Probability (and in crypto analisis), but it took me less time to write said program than it'd have taken to correctly study the probabilities and do the calculations.

Code: [Select]

let rec ask str =
try
print_endline str;
int_of_string (read_line ());
with _ -> ask str
;;

let main () =
let tries = ask "How many times shall I repeat the calculation?" in
let people = ask "How many people?" in
let max = 30 in
let exists = Array.make max 0 in
let counts = Array.make max 0 in
Random.self_init ();
for i = 0 to tries - 1 do
let days = Array.make 365 0 in
let exists_now = Array.make max false in
  for j = 0 to people - 1 do
  let x = Random.int 365 in
days.(x) <- days.(x) + 1;
  done;
  for j = 0 to 364 do
counts.(days.(j)) <- counts.(days.(j)) + 1;
if not exists_now.(days.(j)) then begin
exists_now.(days.(j)) <- true;
        exists.(days.(j)) <- exists.(days.(j)) + 1;
end
  done
done;
for i = 0 to max - 1 do
if exists.(i) > 0 then begin
Printf.printf "Days with exactly %d birthdays: average %f per run, happened in %f%% of the runs\n%!"
i ((float_of_int counts.(i)) /. (float_of_int tries))  ((float_of_int exists.(i)) /. (float_of_int tries) *. 100.);
end
done
;;

try
main ()
with e ->
print_endline (Printexc.to_string e)


[cmorgan]

Happy birthday, the bigg - have a great day!

[Meira]

Happy birthday! 

[Azazello]

Whoa, the nerdiest birthday talk -ever- on the Internet (not just the Web)!

Happy Birthday!

Dude, may that CompSci prof open her eyes, drop her loser-boyfriend, and go for you! 

[the bigg]

Happy birthday, the bigg - have a great day!

Dude, it's bad luck to say HB more than once per BD  :/

Dude, may that CompSci prof open her eyes, drop her loser-boyfriend, and go for you! 

Where did I post that pic anyway?

[Qwinn]

Happy birthday

Qwinn

[Eleima]

Happy birthday, Bigg!!!!   

[Azazello]

Dude, may that CompSci prof open her eyes, drop her loser-boyfriend, and go for you! 

Where did I post that pic anyway?

http://www.shsforums.net/index.php?showtopic=30560&st=35

It points to a mp3 now. 

Got a new link? She was yummy.

[the bigg]

ht tp :/ /www.i sg roup.un im o .it / s imon a.asp

strip the spaces. I'd rather not leave entries in the referrals, so I'll leave you the work 

[KIrving]

Happy Birthday, the bigg!!  May there be beer because beer is good.   

[jastey]

Happy belated birthday!

[the bigg]

http://www.terminally-incoherent.com/blog/wp-content/uploads/2007/09/slowpoke.gif