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RPI 2011-12 Part V: Don't Stop Believing

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Re: RPI 2011-12 Part V: Don't Stop Believing

Cocktail napkins are the way to go. Typically, I use them to show people how to do square roots with pencil and paper.

A lost art. My daughter teaches math at the high school level and has told me that most of her students are lost without their computers, cell phones and calculators. Heaven forbid their batteries go dead.
 
Re: RPI 2011-12 Part V: Don't Stop Believing

Some info regarding next years non-conference schedule, saw this retweet by WaP from Center Ice Club(SCSU) yesterday:

It appears that the Huskies may replace the GLI date with a trip to Troy, NY for a series with the Engineers of RPI. Not 100% confirmed yet.
 
Re: RPI 2011-12 Part V: Don't Stop Believing

Some info regarding next years non-conference schedule, saw this retweet by WaP from Center Ice Club(SCSU) yesterday:

If only someone hadn't already posted that... ;)

There's a rumor from WAP that we will be playing St, Clooud next year. If there's a reciprocal trip planned the next year, that's great news in looking to get some PWR comparisons with the NCHC.

That would give us for NC thus far (still just rumors): 2x Ferris, 2x @Mankato, 2x St, Clooud, likely 1x Union, I wouldn't be surprised if there was a HEA team in there (maybe BU), probably an Atlantic team or two (sort of hoping Canisius so we have actually played them)...
 
Re: RPI 2011-12 Part V: Don't Stop Believing

Where the he double hockey sticks is RHamilton when you need him? I thought he would be running two computers on this one.

I've thought about it, trouble is there are 3^24 possible scenarios (that's 282 billion) so a Monte Carlo simulation would be needed, plus I never worked out a good way to weight/predict ties using KRACH. Given that every game can result in a tie, it would likely skew results significantly.

It's still a possibility; I might take a stab at it if I get bored tomorrow!
 
I've thought about it, trouble is there are 3^24 possible scenarios (that's 282 billion) so a Monte Carlo simulation would be needed, plus I never worked out a good way to weight/predict ties using KRACH. Given that every game can result in a tie, it would likely skew results significantly.

It's still a possibility; I might take a stab at it if I get bored tomorrow!
If you do get the chance to look into it, can you please cross-post on the ECAC Byes thread? I could use some help with the math there every once in a while
 
Re: RPI 2011-12 Part V: Don't Stop Believing

Cocktail napkins are the way to go. Typically, I use them to show people how to do square roots with pencil and paper.

I am impressed. For whatever reason, they had already stopped teaching that algorithm when I went to HS. I taught it to myself but never learned it.
 
Re: RPI 2011-12 Part V: Don't Stop Believing

I don't always make much sense in the middle of the night, or during the day either. I meant "I taught it to myself but never learned it in school."

The same is true for me. I don't use divide and average, which is probably the way that most people would teach.
 
Re: RPI 2011-12 Part V: Don't Stop Believing

The same is true for me. I don't use divide and average, which is probably the way that most people would teach.

It would make sense in the computer age, since that is a simple way to program a square root algorithm although it is fairly slow.
 
Re: RPI 2011-12 Part V: Don't Stop Believing

It would make sense in the computer age, since that is a simple way to program a square root algorithm although it is fairly slow.

It certainly doesn't require divisors that are dependent upon the quotient (unlike the algorithm that I use), but you are right in that it is inefficient. I haven't looked at the source of the math.h library, so I don't know how the sqrt() method works.
 
Re: RPI 2011-12 Part V: Don't Stop Believing

It certainly doesn't require divisors that are dependent upon the quotient (unlike the algorithm that I use), but you are right in that it is inefficient. I haven't looked at the source of the math.h library, so I don't know how the sqrt() method works.

I haven't looked either, though the way some of these machines work, goal seek algorithm in many cases works just fine.
 
Re: RPI 2011-12 Part V: Don't Stop Believing

What is a goal seek algorithm?

It is basically a brute force, trial-and-error method. You insert a number into a formula, compare the formula result to the desired result; then keep changing the original number until the formula result matches the desired result within the level of tolerance.

Which translated into English means, rather than solve for the square root, you instead take x * x and compare the result to your starting number:

Suppose you want the square root of 144.

(a) start with x = 10, you get 10 x 10 = 100 which is < 144 so increase 10.
(b) Try 11, you get 11 x 11 = 121 < 144, so increase 11.
(c) Try 13 you get 13 x 13 = 169 > 144, so decrease 13
.
.
. etc etc etc until eventually you get to x = 12 and you get 12 x 12 = 144 = 144 and so you stop.

It is ugly and inelegant and it works by using raw processing power.

It's ironic, when I used to use a slide rule I would spend more time figuring out where to put the decimal place than I did in solving for the number itself. I probably still have my table of logarithms book in storage somewhere. When the EMP hits I'll be scrambling to find it while I unearth the silver coins from their hiding spot.
 
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