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How Was "City Pair Combinations" Statistically Calculated?   
User currently offlineSHUPirate1 From United States of America, joined Sep 2003, 3670 posts, RR: 16
Posted (2 years 8 months 4 weeks 3 hours ago) and read 1901 times:

OK...so I'm dating myself a bit here, but going back about, oh, 15 years, American Airlines listed something called "city pair combinations" in their hub profiles, for example, http://web.archive.org/web/199610280...r.com/aa_home/servinfo/hubprof.htm

My question is, if anybody has any idea, how was this "city pair combinations" statistic calculated? Presumably it was based on connecting times and deviation from straightline routing, but does anybody have any idea how that was calculated?

Thanks!


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5 replies: All unread, jump to last
 
User currently offlineLAXintl From United States of America, joined May 2000, 25330 posts, RR: 49
Reply 1, posted (2 years 8 months 4 weeks 1 hour ago) and read 1806 times:

Actually sounds pretty straight forward. Its simply math distribution model number of how many spokes(nodes) the hub has multiplied to give to total number of potential connection possibilitiies. For example a 20 spoke hub has 380 theoretic connection potentials.

Airlines will often utilize such marketing sound bites in things like DOT route applications regardless of the unlikeliness that many such markets would really never connect in real life (eg. BOS-LGA via ORD hub), or that some connections might have terrible timings especially for those nodes with low frequency service.

[Edited 2011-12-22 01:04:04]


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User currently offlineSHUPirate1 From United States of America, joined Sep 2003, 3670 posts, RR: 16
Reply 2, posted (2 years 8 months 4 weeks ago) and read 1748 times:

That's my question though...are they doing it that way? I couldn't quite get the numbers to work out that way for any of those four examples I gave (based on other data listed, and in the case of San Juan, not even close), and I have a feeling it's because they didn't, for instance, figure in LHR-ORD-ORY, just to give an example. (I believe that was before AA moved kicking and screaming over to CDG, and also, I'm not even sure they flew ORD-Paris at the time, but just one example of a route combination they probably didn't count)


Burma's constitutional referendum options: A. Yes, B. Go to Insein Prison!
User currently offlineSHUPirate1 From United States of America, joined Sep 2003, 3670 posts, RR: 16
Reply 3, posted (2 years 8 months 3 weeks 6 days 16 hours ago) and read 1506 times:

Anybody? Help? Bueller?

I'm stumped.



Burma's constitutional referendum options: A. Yes, B. Go to Insein Prison!
User currently offlinemogandoCI From , joined Dec 1969, posts, RR:
Reply 4, posted (2 years 8 months 3 weeks 6 days 16 hours ago) and read 1484 times:

Quoting LAXintl (Reply 1):
Actually sounds pretty straight forward. Its simply math distribution model number of how many spokes(nodes) the hub has multiplied to give to total number of potential connection possibilitiies. For example a 20 spoke hub has 380 theoretic connection potentials.

Do they count EVERY combination or just logical combinations? SFO-ORD-LAX doesn't sound like a "city pair combo" to me....


User currently offlineFlighty From United States of America, joined Apr 2007, 8528 posts, RR: 2
Reply 5, posted (2 years 8 months 3 weeks 6 days 15 hours ago) and read 1434 times:

Not every city pair is realistically served. Most likely, it is around 25% of the total (because there are a number of small stations going with infrequent schedule to 1 hub, for an example.) So, with 200 spokes, you might claim 10,000 city pairs instead of 40,000. Including limitations on triple connect, layovers greater than 4 hours etc.

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