|
| Approach | Model | Reference | Year |
|
| Direct Observation | Directly Observe | Orkin [26] and | 1998 |
| and Record Latent Demand | Queenan et al. [22] | 2007 |
| Ignore the censored data | Naïve #1 (N1) | | |
| Discard the censored data | Naïve #2 (N2) | Saleh [27] | 1997 |
| Imputation unconstraining | Naïve #3 (N3) | | |
|
| | | First Proposition | | |
| | | Spill Model | Swan [28–31] | 1979–1990 |
| | | Maximum Likelihood Estimation (MLE) | Brummer et al. [32] and Lee [3] | 1988 1990 |
| | | Booking Profile (BP) | Wickham [8] | 1995 |
| | | Projection Detruncation (PD) | Hopperstad [33] | 1995 |
| | | Pickup Detruncation (Pickup) | Skwarek [34] | 1996 |
| | | Expectation Maximization (EM) | Salch [35] | 1997 |
| | | Life Table (LT) | van Ryzin and McGill [36] | 2000 |
| | | Observed Load Factor (OLF) table | Li and Oum [37] | 2000 |
| | | Nonlinear Programming | Gao and Zhu [38] and | 2005 |
| | | Gao [39] | 2006 |
| | | Multi-distribution-Based EM and PD | Guo [40] and | 2008 |
| | | Guo et al. [41] | 2011 |
| Single-class | Airlines | Comparison | | |
| | | BP, PD, and pickup | Skwarek [34] | 1996 |
| | | N2, N3, BP, and PD | Skwarek [9] and | 1996 |
| | | Hopperstad [42, 43] | 1997 |
| | | N1, N2, N3, BP, and EM | Pölt [20], Weatherford [21] | 2000 |
| | | N1, N2, N3, BP, PD, and EM | Weatherford and Pölt [10], | 2002 |
| | | Zeni [19] and | 2001 |
| | | Zeni and Lawrence [44] | 2004 |
| | | EM and PD | Chen and Luo [45] | 2005 |
| | | Application | | |
| | | BP and PD | Zickus [46] and | 1998 |
| | | Gorin [47] | 2000 |
| Statistical Model Unconstraining | | | EM | He and Luo [48] | 2006 |
| | | DES | Guo et al. [49] | 2008 |
| | | Parametric Regression (PR) | Liu et al. [50] and | 2002 |
| | Hotels | Liu [51] | 2004 |
| | | Double Exponential Smoothing (DES) |
Queenan et al. [22] |
2007 |
| | |
| | | Censored Demand EM Procedure | McGill [52] | 1995 |
| | | Spill Model | Farkas [53] and | 1996 |
| | | Belobaba and Farkas [54] | 1999 |
| | | Cumulative Expected Bookings | Mishra and Viswanathan [55] | 2003 |
| Multi-class | Airlines | Q forecasting | Boyd and Kallesen [56], | 2001 |
| | | Boyd et al. [57] and | 2004 |
| | | Hopperstad et al. [58] and | 2006 |
| | | Hopperstad [59] | 2007 |
| | | EM | Karmarkar et al. [60] | 2011 |
| | | Regression-Based Estimation | Ja et al. [61] | 2001 |
| | | Correlated Demand Forecasting | Stefanescu et al. [62], | 2004 |
| | | Stefanescu [63] | 2009 |
| | | EM (Discrete Choice Model) | Talluri and van Ryzin [64] and | 2004 |
| | Airlines | Vulcano et al. [65] | 2010 |
| Multi-flight | | Multi-flight Recapture Heuristic | Ratliff et al. [23] | 2008 |
| | | Log Risk-ratio Estimation Heuristic | Talluri [66] | 2009 |
| | | EM (Customer Choice Sets) | Haensel and Koole [67] and Haensel et al. [68] | 2011 |
| | | EM (Substitution Effects and Indirect Competitor Estimation) | Vulcano et al. [69] | 2012 |
| | Hotels | Two-step Decomposition (Marginal Log Likelihood Functions) | Newman et al. [18] | 2012 |
|
