of computerized RM systems. A medium-sized airline
might operate 1,000 flight legs per day, using
10 booking (fare) classes in its reservations system,
and accepting bookings up to 330 days prior to each
departure. At any point in time, this airline’s seat
inventory includes over three million booking limits,
which can change with each booking that is accepted.
Airline RM systems have evolved in both their
computer database and mathematical modeling capabilities
over the past 20 years. The first RM systems,
developed in the early 1980s, were designed to collect
and store data extracts from computer reservations
systems (CRS). By the mid-1980s, several RM systems
offered additional monitoring capabilities that
allowed actual flight bookings to be tracked dynamically,
relative to an expected or “threshold” booking
curve for the flight. By the late 1980s, the more
advanced airlines began to implement RM systems
that could perform forecasting and optimization by
booking class for each future flight leg departure, in
addition to having all of the database and booking
monitoring capabilities of previous systems. It was
into this “third generation” of RM systems that OR
models, some of which had been developed a decade
or more earlier, began to be integrated.
The major components of a typical third-generation
RM system are illustrated in Figure 2. Historical booking
data for the same flight leg and day of the week
are combined with actual booking information for
each future flight departure to generate a forecast of
total demand by booking class for that departure.
of computerized RM systems. A medium-sized airlinemight operate 1,000 flight legs per day, using10 booking (fare) classes in its reservations system,and accepting bookings up to 330 days prior to eachdeparture. At any point in time, this airline’s seatinventory includes over three million booking limits,which can change with each booking that is accepted.Airline RM systems have evolved in both theircomputer database and mathematical modeling capabilitiesover the past 20 years. The first RM systems,developed in the early 1980s, were designed to collectand store data extracts from computer reservationssystems (CRS). By the mid-1980s, several RM systemsoffered additional monitoring capabilities thatallowed actual flight bookings to be tracked dynamically,relative to an expected or “threshold” bookingcurve for the flight. By the late 1980s, the moreadvanced airlines began to implement RM systemsthat could perform forecasting and optimization bybooking class for each future flight leg departure, inaddition to having all of the database and bookingmonitoring capabilities of previous systems. It wasinto this “third generation” of RM systems that ORmodels, some of which had been developed a decadeor more earlier, began to be integrated.The major components of a typical third-generationRM system are illustrated in Figure 2. Historical bookingdata for the same flight leg and day of the weekare combined with actual booking information foreach future flight departure to generate a forecast oftotal demand by booking class for that departure.
การแปล กรุณารอสักครู่..