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Reply To: Using TST to conditionally set transition probabilities

Syncrosim Forums ST-Sim & State-and-Transition Simulation Models Using TST to conditionally set transition probabilities Reply To: Using TST to conditionally set transition probabilities

#20180
Leonardo FridLeonardo Frid
Keymaster

As a follow-up to this post I would like to point out that releases of ST-Sim 3.2.18 and later now have additional options for applying TST. In fact the above can be more easily accomplished by adding two records to the “Advanced | Transition – Multipliers” Scenario property.
The first record would specify:
TST Type/Group: Fire [Type]; TST Min: 0; TST Max: 19; Transition Type/Group: Fire [Type]; Multiplier: 0.
The second record would specify:
TST Type/Group: Fire [Type]; TST Min: 20; TST Max: [BLANK]; Transition Type/Group: Fire [Type]; Multiplier: 1.

In this single screen you are now specifying that the probability of a fire occurring within 20 timesteps of a previous fire on the same pixel is multiplied by zero whereas after 20 timesteps have elapsed the probability is multiplied by one.