Activity-based Modelling Flashcards
What is activity based modeling?
- Based on trip-chains (home-bring to school-work-shopping)
- Approaches try to model activity programs, trip and household interactions
- Using time-space chart to describe single person’s activity
How activity-based modeling works? (Process)
Individuals from behaviorally homogenous groups associated with activity
programs derived from travel diaries.
The travel model consists of reproducing the activity programs of all individuals using
micro-simulation based on probabilities derived from the travel diaries.
What are the challenges of activity-based model?
- Synthetic population
- Expertise on constraints
- Realistic knowledge on decision-making processes
- Spatial dynamics and resolution
Difference between trip based, tour based and activity based
- Trip based: only represent origin and destination of trip
- Tour based: represent both OD and duration between two trips
- Activity based: include everything in the daily activity
Take some examples for resource restriction
In a 2 persons household only one car is available. One of them has to postpone their activities till the car is available.
Difference between Trip chains vs. activity pairs
- Trip chain individual travel pattern, transport mode dependencies
- Activity pairs: trip chain broken up, framing conditions by rand-sum
What are the characteristics of individual in activity-based model?
- An activity is a continuous interaction with the physical environment, a service or person, within the same socio-spatial environment, which is of importance to the person.
- Individual activities contribute to larger personal projects
- Individual operate with their budgets of time resources and of social capital
- Schedule activities with household members
- Individuals are constraint in their scheduling due to the need to be available to others
- What is MATSim? What is the principle, how it works? Difference to normal models?
Matsim is a multi-agent transport simulation
