Random Thoughts Part 5: Time to Split Again

[Psinter]

A set of conditions to detect how both faces are equal will always be established in advance but to process a large of data input seems in-feasible so feature extraction i.e KPCA linearization is probably the way to go.

Do you know of algorithms for detecting moving objects? I want to put a set of cameras on my room with night vision and precise movement detection so that when something that is not me moves, the camera triggers an alarm to let me know that there's probably a spider in my room. Then I wake up, check the recordings and what triggered the alarm. I need to protect myself from spiders and that's the system I'm thinking of implementing. Then when someone asks me: "Why do you have so many cameras on your room?" I tell them: "It's classified."

 

[zoobyshoe]

Will we eventually run out of faces in our world population? I mean, consider two faces equal if individual eye, mouth, width etc. dimensions are each within, say, 1/4' of each other or less. We are 7 billion now, will the faces start eventually repeating?

They already have. Haven't you seen those things where people have found their exact double?

 

[Silicon Waffle]

Do you know of algorithms for detecting moving objects? I want to put a set of cameras on my room with night vision and precise movement detection so that when something that is not me moves, the camera triggers an alarm to let me know that there's probably a spider in my room. Then I wake up, check the recordings and what triggered the alarm. I need to protect myself from spiders and that's the system I'm thinking of implementing. Then when someone asks me: "Why do you have so many cameras on your room?" I tell them: "It's classified."

Oh with such requirements, you will have more to lose than to gain then because what you need is actually a good insect repellent.

 

[Psinter]

Oh with such requirements, you will have more to lose than to gain then because what you need is actually a good insect repellent.

Perhaps, but I wanted to go technologically, not chemically.
You have 200!

They already have. Haven't you seen those things where people have found their exact double?

I haven't seen them.

 

[Silicon Waffle]

Perhaps, but I wanted to go technologically, not chemically.

Sorry I don't know any that can detect a "mosquito" or a "fly" in a room .
But surveillance cameras can utilize this LOTS, for example.

You have 200!

Most of them are your likes . Thanks Psinter!

 

[fresh_42]

Isn't there one every date that is divisible by 16, or is it every 4 years? Never mind, it is every 4 years.

Every 4 but not on a 100 except on a 400
Did you know that the 13th of every month is more often a friday than any other weekday?

 

[Silicon Waffle]

Horrible, the whole team couldn't defeat a magician. weeweee

 

[Psinter]

Most of them are your likes . Thanks Psinter!

You deserve them. You are funny and I like your posts.

Did you know that the 13th of every month is more often a friday than any other weekday?

Nope, but now I do.
___________________________________________________________________

You know, one place I've always wanted to go is Germany. There is one forest there that I want to visit, but I don't know it's name. I was told it was an astonishingly awesome forest. But I was only given a simple description that is not enough for me to identify it.

 

[fresh_42]

You know, one place I've always wanted to go is Germany. There is one forest there that I want to visit, but I don't know it's name. I was told it was an astonishingly awesome forest. But I was only given a simple description that is not enough for me to identify it.

With roughly one third of the country being forest it's hard to tell. In some places they try to leave the forest as it is without human manipulations.

 

[Psinter]

Horrible, the whole team couldn't defeat a magician. weeweee

You see? This is funny.

I sure hope the time never comes when I miss you... Nah, I'm sure I'm going to miss you yes or yes if the time ever comes when I cannot chat with you. But don't worry, I have everything 0.0000000001% controlled.

But if I can't chat with you I'll remember the times you made me laugh.
*Telepathic high five for you*

 

[Psinter]

With roughly one third of the country being forest it's hard to tell. In some places they try to leave the forest as it is without human manipulations.

I know. Precisely.

 

[Sophia]

I know. Precisely.

Could it be area on the border near Czech Šumava national park? There are mountains like Alteklause and Resbachklause (this is most certainly wrong spelling. I think I never saw those names written down, it is just my memory of words I heard 5 years ago). They are famous because they leave the nature to evolve without any intervention. They didn't try to "save it" after natural disaster and now it can be used by scientists to observe uninterrupted natural mechanisms. It's very beautiful indeed.
There are hundreds of trees fallen down after strong winds and damaged by insects but below them, many young trees are growing and you can already see a promise of a healthy future forest. Meanwhile, the old rotten trees serve as a habitat for various kinds of animals and plants and they also create the right microclimate for the young ones.
It's evolution in real time.

 

[Ibix]

They already have. Haven't you seen those things where people have found their exact double?

My Dad apparently had one. Two or three times over the years he had colleagues come into his work saying that they'd hailed him in the street, only to find that it was some poor confused chap who just looked exactly like my Dad. They never met, though.

 

[zoobyshoe]

My Dad apparently had one. Two or three times over the years he had colleagues come into his work saying that they'd hailed him in the street, only to find that it was some poor confused chap who just looked exactly like my Dad. They never met, though.

It's a freaky thing. I have never met a double, but I have run across pictures of guys who look exactly like me a couple times.

There have also been a lot of articles like this in the past couple years:

http://www.viralnova.com/doppelganger-party/

 

[WWGD]

Every 4 but not on a 100 except on a 400
Did you know that the 13th of every month is more often a friday than any other weekday?

How much more so?

 

[WWGD]

You deserve them. You are funny and I like your posts.

Nope, but now I do.
___________________________________________________________________

You know, one place I've always wanted to go is Germany. There is one forest there that I want to visit, but I don't know it's name. I was told it was an astonishingly awesome forest. But I was only given a simple description that is not enough for me to identify it.

Das astonishinigde Wald?

 

[fresh_42]

How much more so?

Gauss' birthday on April, 30th 1777 has been a wednesday. The rest goes by induction. (I've never made this exercise. Seems somehow boring ... as the rest of the textbook, btw.)

 

[WWGD]

Gauss' birthday on April, 30th 1777 has been a wednesday. The rest goes by induction. (I've never made this exercise. Seems somehow boring ... as the rest of the textbook, btw.)

? So Friday is May 2, Next Friday is May 9, one after that is May 16. Was lehrbuch is das?

 

[fresh_42]

Das astonishinigde Wald?

Ellis de Wald?

 

[fresh_42]

? So Friday is May 2, Next Friday is May 9, one after that is May 16. Was lehrbuch is das?

Otto Forster Analysis I (1st exercise in the book)

Edit: The German word for a lecture is "Vorlesung", meaning something like "a read out". The professor who lectured it gave the word it's true meaning.

 

[WWGD]

Otto Forster Analysis I (1st exercise in the book)

Edit: The German word for a lecture is "Vorlesung", meaning something like "a read out". The professor who lectured it gave the word it's true meaning.

But I don't see how Gauss birthday falling on a Wednesday says anything to this effect.

 

[fresh_42]

But I don't see how Gauss birthday falling on a Wednesday says anything to this effect.

You need to have a starting point. I guess any day will do. The only hint in the book reads: "This is less an exercise of induction than rather an exercise in systematic counting." Probably one has to derive a formula for friday 13ths first. See, why I didn't like it very much? But it's quick at hand to look up exact wording of definitions.

 

[JorisL]

But I don't see how Gauss birthday falling on a Wednesday says anything to this effect.

I suppose you just need an arbitrary starting point since it's an induction argument and we assume time to be continuous in a sense.

A quick googling suggested the days of the year repeat after 28 years.
Then the counting begins.

 

[WWGD]

You need to have a starting point. I guess any day will do. The only hint in the book reads: "This is less an exercise of induction than rather an exercise in systematic counting." Probably one has to derive a formula for friday 13ths first. See, why I didn't like it very much? But it's quick at hand to look up exact wording of definitions.

I understand; it might as well say Fresh_-42 (plus S&H) was born on Thursday May 1 , 1777, but I don't see how it helps you find the first Friday the 13th. If it had said, e.g., Fresh _-40 was born on Thursday September 12th 1778 or something.

 

[WWGD]

I suppose you just need an arbitrary starting point since it's an induction argument and we assume time to be continuous in a sense.

A quick googling suggested the days of the year repeat after 28 years.
Then the counting begins.

But then you also have the mess of taking leap years into account. The "standard" non-leap year has 365 = 52(7)+1 days, so each date is shifted forward by one for every non-leap year and by 2 every leap year. And then you have 7 "types of years" , starting either Monday,..., Sunday, and then either is leap or non-leap. So there seem to be 14 "types of years", I am missing a factor of 2 somewhere.

 

[collinsmark]

Every 4 but not on a 100 except on a 400

Yes, and the leap year in 2000 was one of the special ones (one of the "divisible by 400" ones of the Gregorian calendar).

Did you know that the 13th of every month is more often a friday than any other weekday?

I had to look up a reference to that (I was almost ready to write another computer program to figure this out, but I'm satisfied with the reference). Here's the reference:
http://scienceworld.wolfram.com/astronomy/FridaytheThirteenth.html

Likelihood that the 13th will land on a given day of the week (over any 400 year period -- the Gregorian calendar is periodic in this respect):

Sunday: 14.31%
Monday: 14.27%
Tuesday: 14.27%
Wednesday: 14.31%
Thursday: 14.25%
Friday: 14.33%
Saturday: 14.25%
​

[Edit: If you are wondering what I mean by this 400 year "period", I mean that if you take any 400 year chunk of the Gregorian calendar, you will find that the months and days of the week line up exactly as the previous and/or the next 400 year chunk, assuming that the Gregorian calendar is still in place. For example, you can bet with 100% mathematical certainty that the year 2416 (i.e., 2016+400) will be a leap year and Feb 29th will be a Monday. Also, Feb. 29th will be a Monday in the years 2816, 3216, 3616, 2016 + 400n (where n is a natural number), etc.]

 

[JorisL]

But then you also have the mess of taking leap years into account. The "standard" non-leap year has 365 = 52(7)+1 days, so each date is shifted forward by one for every non-leap year and by 2 every leap year. And then you have 7 "types of years" , starting either Monday,..., Sunday, and then either is leap or non-leap. So there seem to be 14 "types of years", I am missing a factor of 2 somewhere.

I didn't check the answers, my guess would've been the 400 years collinsmark quoted so now I'm getting confused.

Fortunately I have easier stuff to do to distract me from this before I spend a few hours on this.

 

[DiracPool]

The real reason Arthur started drinking so heavily

 

[zoobyshoe]

The real reason Arthur started drinking so heavily

No one remembers Arthur. I'm surprised you even know who he was.

 

[zoobyshoe]

No one remembers Arthur. I'm surprised you even know who he was.

The song was huge, though, back in the day:



Arthur he does as he pleases
All of his life, he's mastered choice
Deep in his heart, he's just, he's just a boy
Living his life one day at a time
He's showing himself a really good time
He's laughing about the way they want him to be

I also just remembered, that's the movie the line, "I'll alert the media," came from.