GraphHopper Route Optimization Stefan Schrder What is GraphHopper? - - PowerPoint PPT Presentation

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Feb 08, 2024 209 likes •479 views

GraphHopper Route Optimization Stefan Schrder What is GraphHopper? Fast and Flexible Directions API Lightweight API to solve heavy routing problems Brief history 04/2012 Peter Karich published OS GraphHopper routing based on

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GraphHopper Route Optimization

Stefan Schröder

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Fast and Flexible Directions API
Lightweight API to solve heavy routing problems

What is GraphHopper?

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04/2012 – Peter Karich published OS GraphHopper routing

based on OSM

06/2013 – Stefan Schröder published jsprit, a toolkit to solve

vehicle routing problems

04/2015 – we joined forces to develop the GraphHopper

Directions API

Brief history

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Directions API

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Route Optimization API

Difference between Routing and Route

Optimization API

Least cost path from A to B Least cost paths with via points A B A B C D E A B C D E Least cost route by

rdering of via points

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Route Optimization API

1. Geocode
2. Snap Geocodes to

networks

3. Calculate n x n travel

times/distances

4. Optimize

Friedrichstraße 52 lon,lat

1 n 1 n

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Vehicle Routing Problem

VRP: Given m vehicles with capacity restrictions and n

customers, find vehicle routes that minimize transportation costs.

TSP: Round trip visiting every location once
Last mile deliveries, health care, garbage collection,

technicians, ...

Challenges: Search space, Example 50 L-TSP

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Search algorithms

Exact methods – Branch & Bound
Meta-Heuristics – Tabu Search, Simulated

Annealing, etc.

Ruin and Recreate – Large Neighborhood

Search Threshold Acceptance and Simulated Annealing

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Route Optimization Editor

Switch to Route Editor and solve problems live
TSP
TSP-Relation
VRP
VRP-Relation
VRP-Bike
VRP-Min-Max

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Problem Berlin

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Sufficient capacity - TSP

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Direct sequence of 37 & 38

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VRP

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VRP with relation

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VRP – min-max compl. time

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VRP – min-max by foot

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Shortest route through Dublin avoiding pubs?

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Dublin – “avoid pubs”

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Dublin – “avoid pubs”

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Publicity?

handful retweets
<100 blog readers
pointer to this: “there's someone trying to drink in

every pub in Dublin, might be another interesting demo for you.”

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Shortest route through Dublin visiting all pups?

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Dublin – “visit all pubs”

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Publicity?

many retweets from all over the world
>3000 readers
on reddit
a day on the front page of hacker news with 84

points

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Dublin – “visit all pubs”

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GraphHopper.com stefan.schroeder@graphhopper.com

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