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Transcript of ch09
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Yield Management Chapter 9
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Yield Management • “Selling the right capacity
to the right customer at the right price” • Business Requirements
– Limited Fixed Capacity– Business environment where YM can help
• Ability to segment markets• Perishable inventory• Advance sales• Fluctuating demand• Accurate, detailed information systems
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Ontario Public Parks System • Mission?
• Fee: $7.50 per night
Campsites Occupied Annual Total Per Day
Summer Weekends 5,891 227/daySpring/Fall Weekends 8,978 173/daySummer Weekdays 6,129 67/day Spring/Fall FridaysRest of Season 4,979 25/day
Total Campsites 25,997Total Revenue $65K
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New Fee Schedule:$18.00 Summer Weekends$7.50 Spring/Fall Weekends$1.50 Summer WeekdaysSpring/Fall Fridays
Free Rest of Season (no rangers stationed) Results: Campsites Occupied$7.50 FeeSliding FeesSummer Weekends 5,891 5,215Spring/Fall Weekends 8,978 8,546Summer Weekdays 6,129 15,523 Spring/Fall FridaysRest of Season 4,979 -
Total Campsites 25,997 29,284 >13%Total Revenue $65K $60K
Expenses cut: no rangers stationed in WinterChapter 9 - Yield Management 2
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Managerial Options • Supply Management
– Capacity– Work-shift scheduling– Increasing customer participation– Adjustable (surge) capacity– Sharing Capacity– Personnel – cross training, part-timers
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Managerial Options• Demand Management
– Partitioning demand– Price incentives– Promoting off-peak demand– Develop complementary services
• Yield Management
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5 5 5 5 50 30
Manufacturing capacity needed: 100/7
Service capacity needed: Depends on General Service Capacity Strategy
– Provide: sufficient capacity at all times
– Match: change capacity as needed
– Influence: change demand pattern
– Control: maximize capacity utilization
Known Demand
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Services Versus Manufacturing • Capacity planning task more difficult
–Inventory–Timing
• Capacity planning mistakes (stock-outs) more expensive
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Industries that Fully Use YM Techniques• Transportation-oriented industries
– Airlines– Railroads– Car rental agencies– Shipping
• Vacation-oriented industries– Tour operators– Cruise ships– Resorts
• Hotels, medical, broadcasting
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Elements of a Yield Management System
• Overbooking
• Pricing
• Capacity Allocation– Distinct versus nested– Static versus dynamic
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Overbooking
Two basic costs:1)Stock outs
customers have a reservation and there are no rooms left
2)Overagecustomers denied advance reservation
and rooms are unoccupied
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Example: Hotel California
Stock outs: 0.8 x $150 = $120
Overage: $50
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Table 9.1: Hotel California No-Show ExperienceNo-Shows % of Experiences Cumulative % of
Experiences 0 5 5 1 10 15 2 20 35 3 15 50 4 15 65 5 10 75 6 5 80 7 5 85 8 5 90 9 5 9510 5 100
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Overbooking Approach 1: Using AveragesIn Table 9.1 the average number of no-
shows is calculated by 0x0.05 + 1x0.10 + 2x0.20 + 3x0.15 +…+ 10x0.05 = 4.05.
Take up to four overbookings.
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Overbooking Approach 2: Spreadsheet Analysis
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Book more guests until:
E(cost of dissatisfied customer) = E(cost of empty room)
• Cost of dissatisfied customer *Probability that there are fewer no-shows than overbooked rooms =
• Cost of empty room *Probability that there are more no-shows than overbooked rooms
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Overbooking Approach 3: Marginal Cost Approach
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Hotel California• Co/(Cs + Co) = P(Overbook No
Shows) Hotel Data• Cs = $120, Co = $50.00• Co/(Cs + Co) = 29.%
– Overbook 2 rooms
Table 9.1: Hotel California No-Show ExperienceNo-Shows % of Experiences Cumulative % of
Experiences 0 5 5 1 10 15 2 20 35
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29%
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Actual Overbooking Cost Curve
0 20 40 60 80 100 120 140
$
Percentage of Capacity Claimed
revenue from regular bookings linear decline
non-linear decline
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loss of revenue from unhappy customers
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Fig. 9.2 Dynamic Overbooking
Overbooking
Time to EventEvent Occurs Reservations Start
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Capacity Allocation with Exogenous Prices
Reservations
0 5 10 15 20 25 30
Days Before Event
Capacity
Necessary
Desirable
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Capacity Allocation with Exogenous Prices
• Methods
– Nested vs. Distinct
– Static vs. Dynamic
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Capacity Allocation with Exogenous Prices
Example (Chancey Travel) Business capacity = 100Demand forecast: premium profit ($10,000/seat)
demand: uniformly distributed (51, 100)[meaning: 2% chance demand = 51, 2% chance demand = 52,…, 2% chance demand = 100, average demand = 75]
Discount price ($2,500/seat) demand:unlimited demand at this price – infinitediscounters book earlier than premium
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Static Methods• Fixed Number, Fixed Time Rules
• Fixed Time Rule– Accept discount bookings until a specific date– Motivation– Distinct, Static System – Fixed Number Rule– Average of 75 premium bookings, so reserve
» exactly 75 slots for premium customers» exactly 25 slots for discount customers
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Static Methods• Fixed Number, Fixed Time Rules
– Nested, Static system – Fixed Number RuleAverage of 75 premium bookings, so reserve75 slots for premium customersremaining 25 go FCFS
– Example:85 premium and 15 passengers wish to bookDistinct, Static system: 75 premium,15 discountNested, Static system: 85 premium,15 discount
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• EMSR heuristic (Expected Marginal Seat Revenue)– Allocating first through 51st seats
revenue per seat:100% certain of $10,000 premium vs. $2,500 discount
Allocating 52nd seat98% certain of $10,000= $9,800 expected revenue vs. $2,500 discount
Allocating 53nd seat96% certain of $10,000
= $9,600 expected revenue vs. $2,500 discount
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Nested, static system – Fixed Number Rule
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– 88th seat24% certain of $10,000 = $2,400 vs. $2,500 discount
On average flight:75 premium passengers13 discount passengers12 empty seats Optimal Allocation87 seats premium, 13 seats discount
– Rule:Accept discount passenger untilpr(spill) < discount revenue/premium revenue
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Nested, static system – Fixed Number Rule
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Threshold Curve AnalysisForecasting from early reservations history
0 5 10 15 20 25 30 35 40
Capacity
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City Pair Airline Coach 21 14 7 Cheapest Wash.-Nashville USAir $598 414 210 158 79 Newark-Salt Lake Cont. 1,610 785 614 408 179 Dallas-Cleveland American 1,296 204 204 204 159 Memphis-Las Vegas N-west 1,388 463 351 351 149
Pricing and Capacity Allocation
• Effects:– Expands overall industry– Shifts consumer surplus to supplier
• Two views– Using imaginative methods to expand the economy and give
consumers what they want– Capitalist pig price gouging
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Pricing and Capacity Allocation – Event • Uncapacitated
Possible unit prices $100 110 90Associated demand 100 80 120Total Revenue $10,000 8,800 10,800
• Capacitated With Two ClassesCapacity of 100Discount class unlimited demand at $50Premium price $100 110 90Premium demand 100 80 100
Premium revenue 10,000 8,800 9,000Discount revenue 0 1,000 0Total revenue $10,000 9,800 9,000
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• Capacitated with Two ClassesCapacity of 100Discount class unlimited demand at $75
Premium price $100 110 90Premium demand 100 80 100
Premium revenue 10,000 8,800 9,000Discount revenue 0 1,500 0
Total revenue 10,000 10,300 9,000
Lesson: in the capacitated environment pricing depends on the relative demand/capacity relationships
Pricing and Capacity Allocation – Event
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Yield Management – Implementation• Alienating Customers
• Difficulty of customer understanding• Customer cheating
• Employee Issues• Limiting decision power• Sabotage: add, not subtract responsibility• Reward system: in-synch with managerial goals
- Consistency across personnel and units• Exception processing• Monitoring
• Cost/Time of Implementation
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