Research Article
Dynamic O-D Demand Estimation: Application of SPSA AD-PI Method in Conjunction with Different Assignment Strategies
Table 3
Efficacy of the O–D estimation method in terms of reduction of the errors in measures reproductions.
| Experiments | Link volume | Speed | Density | Outflow | Left-turn movements | Queue length |
| Set I | | | | | | | Average reduction [%] | | | | | | | St.dev. [%] | 0.52 | 6.69 | 0.50 | 16.16 | 81.63 | 3.23 | Set II | | | | | | | Average reduction [%] | | | | | | | st.dev. [%] | 20.97 | 23.74 | 20.50 | 22.71 | 66.86 | 23.50 | Set IV | | | | | | | Average reduction [%] | | | | | | | St.dev. [%] | 7.02 | 12.41 | 8.50 | 37.34 | 34.77 | 13.23 | Set V | | | | | | | Average reduction | | | | | | | st.dev. | 29.76 | 29.72 | 20.50 | 35.37 | 119.26 | 30.05 | Set VI | | | | | | | Average reduction [%] | | | | | | | St.dev. [%] | 27.55 | 27.96 | 25.40 | 29.16 | 130.96 | 28.16 | Set VII | | | | | | | Average reduction [%] | | | | | | | St.dev. [%] | 24.27 | 23.14 | 22.45 | 15.99 | 446.03 | 21.72 | Set VIII | | | | | | | Average reduction [%] | | | | - | - | - | St.dev. [%] | 14.81 | 12.48 | 15.30 | - | - | - |
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