"Lévy flight" seems to be a professional term, but what does flight mean here?

Forums:
Email this Topic • Print this Page

Does "flight" here mean "a series of steps"?

Context:

A Lévy flight, named for French mathematician Paul Lévy, is a random walk in which the step-lengths have a probability distribution that is heavy-tailed. When defined as a walk in a space of dimension greater than one, the steps made are in isotropic random directions.
The term "Lévy flight" was coined by Benoît Mandelbrot,[1] who used this for one specific definition of the distribution of step sizes. He used the term Cauchy flight for the case where the distribution of step sizes is a Cauchy distribution,[2] and Rayleigh flight for when the distribution is a normal distribution[3] (which is not an example of a heavy-tailed probability distribution).

More:
https://en.wikipedia.org/wiki/L%C3%A9vy_flight

Topic Stats
Top Replies
Link to this Topic

Type: Question • Score: 2 • Views: 721 • Replies: 13

No top replies

View best answer, chosen by oristarA

Yes, it does mean a series of steps.

1 Reply

@Tes yeux noirs,

Thanks.

BTW, can you see "allows criminals to perform long jumps in between committing crimes with a speed light"? I wonder how criminals can commit crimes in their jumps during competition of long jumps.

Quote:

In this paper, we developed a truncated L´evy flight model to study the crime dynamics. In the discrete case, our model allows criminals to perform long jumps in between committing crimes with a speed light. This is a more realistic extension of a pioneering random walk model by Short et. al

MOre:

http://arxiv.org/pdf/1601.03415.pdf

0 Replies

Quote:

in between committing crimes with a speed light

This does not make sense. What is a "speed light"?

2 Replies

@Tes yeux noirs,

Even original papers have typos (bad editing).

It's certainly "speed flight". Shorter steps lead to faster "flights".

1 Reply

"committing crimes with a speed flight" doesn't make any sense either.

1 Reply

@Tes yeux noirs,

Tes yeux noirs wrote:

Quote:
in between committing crimes with a speed light

This does not make sense. What is a "speed light"?

It may refer to speedlight, strobotron in electronics.

1 Reply

@Tes yeux noirs,

Tes yeux noirs wrote:

"committing crimes with a speed flight" doesn't make any sense either.

My guess is that with the electronic device (a strobotron device), it might interfere with the electronic scoreboard to change the score. But I haven't read the whole article.

0 Replies

@timur,

timur wrote:

Even original papers have typos (bad editing).

It's certainly "speed flight". Shorter steps lead to faster "flights".

It seems there are at least two native English speakers among the authors. So it is less likely that these are grammatical mistakes:

These authors are from DepartmentofMathematics,HarveyMuddCollege,Claremont,CA91711
DepartmentofMathematics,UniversityofCalifornia,LosAngeles,LosAngeles,CA90095.

1 Reply

@oristarA,

A Speedlite is photographic lighting strobe made by the Canon brand.
There is some logic in the context of what has been written to referring to stop-action by using a strobe.

That being said, however, speed flight is a total mystery to me.

0 Replies

@oristarA,

Quote:

It seems there are at least two native English speakers among the authors. So it is less likely that these are grammatical mistakes:

That is a good joke, oristarA.

0 Replies

Tes yeux noirs wrote:

"committing crimes with a speed flight" doesn't make any sense either.

Not sure you are understanding the context but who am I to contradict you?

Quantum physics don't make sense either...

1 Reply

@timur,

I am understanding the context perfectly well. This is not mathemeatical jargon or specialised language; it is nonsense. I do know the difference.

0 Replies

Sorry, speed limit. As in, a finite number of steps moved for each time step in the discrete case. I had to step away from the project 3 months prior for personal reasons and hadn't even realized the paper was on arxiv (missed the email). I feel foolish for not insisting on a final proofread. And yeah, I was the only native speaker actively participating.

-Nathan Geldner

0 Replies

Forums
» "Lévy flight" seems to be a professional term, but what does flight mean here?

Read Question
Reply to All

"Lévy flight" seems to be a professional term, but what does flight mean here?

Quick Links

My Account

able2know