Bidirectional Shortest Path

###Implementation of Bidirectional Shortest Path Algorithm for pgRouting

Basic Idea

Bidirectional search can speedup finding shortest path by reducing node exploration. In the project I want to implement Bidirectional Dijkstra and Bidirectional A* for pgRouting. I will implement the necessary data structures and the algorithms. I also intend to provide turn restriction support and hierarchical heuristic as nice to have feature.

Links

• Proposal
• Timeline

Project plan as per initial proposal

As I have 12 weeks to complete the project, I like to have a tentative schedule like as follows:

• Week 1: System study, architecture and data structure design.
• Week 2-5: Start coding for bidirectional dijkstra. Implement necessary data structure and the algorithm.
• Week 6-8: Start coding for bidirectional A*. Implement necessary data structures and the algorithm.
• Week 9: Integration with pgRouting. Implementation of necessary wrapper classes.
• Week 10-12: Testing, Bug fixing and implementation of nice to have features.