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Inventing RM: How it felt to write a revenue management (RM) system without precedents the scene

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Journal of Revenue and Pricing Management Aims and scope

Abstract

Looking back from the vantage point of 2015 with its rich, vibrant RM community and healthy RM dialog, it is hard to imagine how isolated early practitioners of RM were. There existed many fewer experts, very little background literature, almost no primary research and, significantly, no Journal of Revenue and Pricing Management. The computer tools were primitive. There were no PCs or even portable laptops, and no dedicated RM IT resources within most airline organizations. Computer languages and particularly input/output protocols were not supportive to the early efforts – there was a predominance of very sequential coding languages, loops within loops. Those who set out to write early systems even for major carriers lived in isolation, trying to invent theory on the fly and/or to replicate the best of the simplistic manual heuristics by which RM analysts were trying to come to grips with an increasingly complex environment. The author, who handwrote (that is, on paper) the code to a US major carrier’s first ‘system’ one night on a long flight to Hawaii, will (attempt to) recreate the feel of the era when RM practitioners were ‘flying without instruments’ …

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Notes

  1. Google ‘Fellini’ – Well worth it!

  2. Everyone watched the same movie on a single screen back then.

  3. It seemed like it was always the same movie!

  4. Passengers were allowed to smoke in those days; the air at the back was thick with smoke …

  5. Yes, I was once young! And non-revs were always seated in the smoking section.

  6. Using a pen. There were no laptops or portable computers.

  7. Calculation ‘operators’ in APL Computer Language were Greek letters.

  8. There was no Internet for email; not even office FAX until the early 90s. I eventually did send my code by ‘Zap mail’ – another topic worth a Google.

  9. There wasn’t even voice mail – I had to wait until someone was at work to take my call!

  10. The training mantra we used at Continental was that Programs need to be evaluated by comparing the Displacement, Dilution and Direct expense against Generated revenue taking into account Risk. To this day, former Continental Sales employees remind me that they still remember ‘DDDGR’s.

References

  • Belobaba, P. (1989) Application of a probabilistic decision model to airline seat inventory control. Operations Research 37 (2): 183–197.

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Correspondence to Bill Brunger.

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Brunger, B. Inventing RM: How it felt to write a revenue management (RM) system without precedents the scene. J Revenue Pricing Manag 15, 242–246 (2016). https://doi.org/10.1057/rpm.2016.19

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  • DOI: https://doi.org/10.1057/rpm.2016.19

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