ODConstruction

Definition of OD Matrix. The OD flows are organized in the form of an OD matrix $\bf F$ shown below,

$$ \mathbf{F} = \begin{bmatrix} f_{11} & f_{12} & ... & f_{1N} \\ f_{21} & f_{22} & ... & f_{2N} \\ \vdots & \vdots & \ddots & \vdots \\ f_{N1} & f_{N2} & ... & f_{NN} \end{bmatrix}, $$

in which each element represents the flow $f_{ij}$ between a specific pair of regions. An OD matrix generally represents the mobility flow between all regions within an entire city.

Problem Definition. The OD construction problem aims to construct the complete OD matrix $\mathbf{F}$ for the city based on easily accessible information without any OD flow information available.

Requirements

• python 3.8
• tqdm == 4.64.0
• pytorch == 2.0.0
• dgl == 0.8
• pandas == 1.4.4
• geopandas == 0.12.2
• matplotlib == 3.5.3
• mlflow == 2.3.2
• networkx == 2.8.6
• pyproj == 3.4.1
• scikit-learn == 1.1.2
• scipy == 1.9.1
• tensorboard == 2.12.3

Systematic Summary

reference

Performance Comparison

Topology known

Topology unknown

More conductive experiments are coming soon.