1. Validation of the Proposed
Improvement-trend
Technique
Presented by:
Abhishek Srivastava
Department of Computing Science
University of Alberta
1
Friday, December 11, 2009
2. Improvement-trend criterion
feedback
line fitted using the
Ordinary Least Squares
technique
feedback
× ×
×
×
×
time
2
Friday, December 11, 2009
3. Validation of our technique
feedback
feedback
× ×
Hotels in ×
Los Angeles ×
×
time
3
Friday, December 11, 2009
4. feedback
Renaissance Hollywood Hotel
Hyatt Regency, Century Plaza
Vagabond Inn
Elan Hotel
Hollywood City Inn
Hollywood Orchid Suites
Sofitel Los Angeles
Sheraton Universal Hotel
Holiday Inn Express...Hollywood...
Angeleno Hotel
4
Friday, December 11, 2009
5. 1
Proposed technique
1.2
= 0.833
2
= 1.33 Randomly collected
Renaissance Hollywood Hotel 1.5
small number of
Hyatt Regency, Century Plaza 2 feedback
Vagabond Inn = 2.5
0.8
Elan Hotel
Hollywood City Inn {Reliability}α
Hollywood Orchid Suites = Available · {W aiting-time}β
Af f inity
Sofitel Los Angeles
Sheraton Universal Hotel
HolidayAf fExpress...Hollywood... ·Availablej ·
Inn inityij = Couplingij {Reliabilityj }α · {Improvement-trendj }γ
Angeleno Hotel {W aiting-timej }β
feedback
× ×
T ransition-rate =
Completion-ratei ∗ Couplingij ×
×
×
Length of queue
W aiting-time =
Completion-rate
time
5
Improvement-trend = {Slope of f itted line}∗{M ean f eedback value}
Friday, December 11, 2009
6. Rankings based on proposed
technique
Renaissance Hollywood Hotel 1. Sofitel Los Angeles 1.5423
Hyatt Regency, Century Plaza 2. Elan Hotel 1.4119
Vagabond Inn Ranked based on 3. Angeleno Hotel 1.3097
calculated
Elan Hotel Improvement-trend 4. Holiday Inn Express...Hollywood... 1.2503
Hollywood City Inn 5. Hollywood City Inn 1.1707
Hollywood Orchid Suites 6. Vagabond Inn 1.1053
Sofitel Los Angeles 7. Sheraton Universal Hotel 1.0931
Sheraton Universal Hotel 8. Renaissance Hollywood Hotel 1.0871
Holiday Inn Express...Hollywood... 9. Hollywood Orchid Suites 0.9739
Angeleno Hotel 10. Hyatt Regency, Century Plaza 0.8815
6
Friday, December 11, 2009
7. Calculation of ‘actual’
improvement
Renaissance Hollywood Hotel
Hyatt Regency, Century Plaza
Vagabond Inn
Elan Hotel
Hollywood City Inn
Hollywood Orchid Suites
Sofitel Los Angeles
Sheraton Universal Hotel
Holiday Inn Express...Hollywood...
Angeleno Hotel
Large amount
of feedback
7
Friday, December 11, 2009
8. Large amount
of feedback
Renaissance Hollywood Hotel
Hyatt Regency, Century Plaza
Vagabond Inn
Elan Hotel
For each hotel
Hollywood City Inn Monthly feedback
Hollywood Orchid Suites average
Sofitel Los Angeles
Sheraton Universal Hotel
Holiday Inn Express...Hollywood...
Angeleno Hotel
8
Friday, December 11, 2009
9. Rankings based on proposed
feedback
Feedback average
Hotels ranked
October 2009
based on feedback
September 2009 Hotels ranked
Renaissance Hollywood Hotel based on feedback
. .
Hyatt Regency, Century Plaza
. .
Vagabond Inn
. .
Elan Hotel
Hollywood City Inn Hotels ranked
December 2008
Hollywood Orchid Suites based on feedback
Sofitel Los Angeles
Sheraton Universal Hotel . .
Holiday Inn Express...Hollywood... . .
Angeleno Hotel . .
Hotels ranked
July 2008
based on feedback
9
Friday, December 11, 2009
10. For each hotel:
October 2009 Rank
Average rank
September 2009 Rank July - October 2009
Ranking
August 2009 Rank
July 2009 Rank
.
.
. March - June 2009
Ranking
December 2008
.
Oct. `08 - June `09
.
Ranking
.
July 2008
July - October 2008
Ranking
10
Friday, December 11, 2009
11. ‘Rank improvement’
For each hotel:
July - October 2009
Ranking R4
March - June 2009
Ranking R3
Rank improvement =
(R1-R2)+ (R2-R3)+ (R3-R4)
Oct. `08 - June `09
Ranking R2
July - October 2008
Ranking R1
11
Friday, December 11, 2009
12. Rankings based on ‘Rank
improvement’
Renaissance Hollywood Hotel Vagabond Inn +3
Hyatt Regency, Century Plaza Elan Hotel +2.5
Vagabond Inn Ranked based on Sofitel Los Angeles +1.75
Elan Hotel Rank improvement Holiday Inn Express...Hollywood... +1.25
Hollywood City Inn Angeleno Hotel - 0.5
Hollywood Orchid Suites Hollywood Orchid Suites - 0.75
Sofitel Los Angeles Hyatt Regency, Century Plaza - 0.75
Sheraton Universal Hotel Hollywood City Inn - 1.25
Holiday Inn Express...Hollywood... Sheraton Universal Hotel -2
Angeleno Hotel Renaissance Hollywood Hotel - 3.25
12
Friday, December 11, 2009
13. Ranking comparison
Based on ‘rank improvement’ Proposed technique
(large feedback number) (small feedback number)
1.Vagabond Inn 1. Sofitel Los Angeles
2. Elan Hotel 2. Elan Hotel
3. Sofitel Los Angeles 3. Angeleno Hotel
4. Holiday Inn Express...Hollywood... 4. Holiday Inn Express...Hollywood...
5. Angeleno Hotel 5. Hollywood City Inn
6. Hollywood Orchid Suites 6.Vagabond Inn
6. Hyatt Regency, Century Plaza 7. Sheraton Universal Hotel
8. Hollywood City Inn 8. Renaissance Hollywood Hotel
9. Sheraton Universal Hotel 9. Hollywood Orchid Suites
10. Renaissance Hollywood Hotel 10. Hyatt Regency, Century Plaza
Average ‘Manhattan’ distance = 2.3
13
Friday, December 11, 2009
