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MPs 50 classic climbs
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May 2, 2012
Hang it low Todd, it's the only list where I I have more than you! Rob Dillon
Joined Mar 22, 2002
1,010 points
May 2, 2012
Page view weighting leans to CO routes, since this site started as a CO-centric and those entries are older. Also probably leans toward moderates since more people have done them, seems way heavy on 5.8s.

But still, c'mon, no Rostrum?
Will S
From Joshua Tree
Joined Nov 15, 2006
1,275 points
May 2, 2012
CJC wrote:
so does the photo of the moment selector which requires only one 'great' vote to be included in the queue

One downvote is all it takes to keep the choss and the buttshots out of the rotation FOREVER. I've been busy...
Boissal
From Small Lake, UT
Joined Aug 21, 2006
1,730 points
May 2, 2012
Rob Dillon wrote:
32/50. Obviously the algorithm skews towards easier climbs in Colorado, but hey, I live in Colorado and I don't climb hard! +1 For Lord of the Thais...overhanging broccoli stalks 300' over the beach! Interesting how Ancient Art's Stolen Chimney only gets 2 stars but is still on the list.



Stolen chimney gets 2 stars for you because i believe thats what you graded it. MP's global average grade is 3.8 stars out of 235 votes.
Conor Byrne
Joined Jul 12, 2009
31 points
Administrator
May 2, 2012
On Everleigh Club Crack.  Photo by Burt Lindquist.
There might be a reason they chose to stratify their preference algorithm by State rather than do a global ranking ... if the global ranking is so obviously biased.

You could simply censor data before 5 years ago... but you would still have to weight for where the climbing population lives and vacations.

My question is, how have these preferences changed over time? Was Ancient Art in the top 50 list before Katie and Citi? What impact will Fred's new list have over the next 5 years?

John, glad you asked that question because Gokul & I were asking it just last night.
Doug Hemken
Joined Oct 1, 2004
5,221 points
May 2, 2012
Trundling a death block. Photo by Dan Gambino.
39!!!

Not bad!

Now how many have you done solo???

I've got 9...free and roped.

Kinda fun...

josh
J. Thompson
From denver, co
Joined Jan 1, 2001
1,739 points
May 2, 2012
Living the High Life.
11 1/2 (Tr'ed Supercrack). What an amazing bucket list. Thanks MP! Andy Novak
From Golden, Co
Joined Aug 22, 2007
337 points
Site Landlord
May 2, 2012
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I released all these features over a year ago... maybe we should have advertised them better! Nick Wilder
From The Bubble
Joined Jan 1, 2005
1,779 points
May 4, 2012
Algorithms are funny things- go to the California page, pull up the Top 50, and right between Positive Vibrations and Astroman is...Coarse and Buggy? Rob Dillon
Joined Mar 22, 2002
1,010 points
May 4, 2012
how about normalizing the votes or ticks to the routes or ticks per state? berl
From Seattle
Joined Apr 13, 2008
42 points
Administrator
May 4, 2012
On Everleigh Club Crack.  Photo by Burt Lindquist.
Berl, not sure if you mean pick the 50 classics per State, which is where this all started, or if you mean to compare across States.

If you compare across States after normalizing for State popularity (b1*posts + b2*ticks + b3*stars + b4*views), you end up picking 50 routes that stand way above their in-State peers. So at the extreme, an area/State with one classic route and a bunch of choss (Illinois, say) would pop onto the list, and all those Yosemite routes would disappear because they don't really stand that far above their neighbors?

As a side note, once you get down to smaller areas/units, then you start getting "less intuitive" results again, just like if you try to compare across too much geography.
Doug Hemken
Joined Oct 1, 2004
5,221 points
Administrator
May 4, 2012
On Everleigh Club Crack.  Photo by Burt Lindquist.
JLP wrote:
Holy Cow - you claim there's something worth climbing in IL that should replace one of the routes on the "All" list?


No, I'm telling you that if you normalize poorly you'll end up with "Ant Killer" knocking "Central Pillar of Frenzy" off the list. And you are telling me your intuition doesn't like that!

You need to think a little bit longer about what kind of data generates a large z-score.

You need some give and take between intuition and data analysis, for the benefit of both, IMO.
Doug Hemken
Joined Oct 1, 2004
5,221 points
Administrator
May 4, 2012
On Everleigh Club Crack.  Photo by Burt Lindquist.
Can't really argue with "warped."

I think the lists based on "good" data tell us a lot about people (us), while the "bad" lists tell us a lot about the limits of the data.
Doug Hemken
Joined Oct 1, 2004
5,221 points


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