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Show HN: A basketball hoop to maximize shots that go in [video]

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Re: Show HN: A basketball hoop to maximize shots that go in [video]

#11
Nope, expected something interesting, but this is based on a boring brute-force simulation.

He did hint at using a parabolic shape, like in satellite dishes. Why not use some actual calculus and differential equations to figure out the optimal parabolic-like shape here?

Re: Show HN: A basketball hoop to maximize shots that go in [video]

#12
post #8

Clearly the hoop that minimizes shots is what exists at funfairs all over the world. Would making the backboard convex make it near-impossible to hit? What about making the curve imperceptible so it's hard to notice it's helping/hurting?

That's if you hit the backboard. But you don't need to hit the backboard and plenty of people can normally make the shot without it. Funfairs / carnivals probably are doing something with the hoop itself.

Re: Show HN: A basketball hoop to maximize shots that go in [video]

#14
That was a pretty cool video! I loved how he used 3D Monte-Carlo and side-stepped all the complicated math. I wonder if he was using a Physics engine like Bullet or ODE to calculate the simulated trajectories. Also, a good intermediate step might've been to build the backboard in something like Unity and shoot some hoops to catch the radius error before actually machining it out.

Re: Show HN: A basketball hoop to maximize shots that go in [video]

#17
post #10

"Who is Monte Carlo?" Monte Carlo is for Europe what Las Vegas is for the US. The first name that comes to mind when you think gambling. Monte Carlo method is repeated random sampling to obtain numerical results. Monte Carlo algorithms are heuristic algorithms that solve problems with random process that can give wrong answers. Las Vegas algorithms are algorithms that solve problems with randomness but get always cor…

I laughed out loud when he said this. I take for granted how much gambling knowledge I have (especially since I generally think gambling is stupid), but I thought everyone knew about Monte Carlo.

I'm going to have to look up Las Vegas algorithms though, this is the first I've heard of them. Course, it's been a while since I've broadly looked at the current state of probabilistic algorithms. Makes me think it might be time to step back and look at some more general theory, especially since some recent DSP work led me to look into particle filters in an attempt to estimate a pair of rotating phasors.

Re: Show HN: A basketball hoop to maximize shots that go in [video]

#18
post #16

Any physics experts know what the actual optimal shape is? I imagine it would be a pretty gnarly problem to work out.

Well, IIRC, theatrical lights use parabolic reflectors to focus a non-point source into a point on a lens, so that might be a good place to start.

Re: Show HN: A basketball hoop to maximize shots that go in [video]

#19
post #17
post #10

"Who is Monte Carlo?" Monte Carlo is for Europe what Las Vegas is for the US. The first name that comes to mind when you think gambling. Monte Carlo method is repeated random sampling to obtain numerical results. Monte Carlo algorithms are heuristic algorithms that solve problems with random process that can give wrong answers. Las Vegas algorithms are algorithms that solve problems with randomness but get always cor…

I laughed out loud when he said this. I take for granted how much gambling knowledge I have (especially since I generally think gambling is stupid), but I thought everyone knew about Monte Carlo. I'm going to have to look up Las Vegas algorithms though, this is the first I've heard of them. Course, it's been a while since I've broadly looked at the current state of probabilistic algorithms. Makes me think it might be…

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Re: Show HN: A basketball hoop to maximize shots that go in [video]

#20
post #9
post #8

Clearly the hoop that minimizes shots is what exists at funfairs all over the world. Would making the backboard convex make it near-impossible to hit? What about making the curve imperceptible so it's hard to notice it's helping/hurting?

The carnival hoops I've examined all have ellipsis shaped rims. Impossible to distinguish from a circle when observed from the front, but clearly squished if you walk around and get underneath it.

ellipsis shaped rims... will leave you hanging.
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