Any example about implicit definition of state space and action space?

[NeroBlackstone]

http://juliapomdp.github.io/POMDPs.jl/stable/def_pomdp/#space_representation

"However it should be noted that, for many solvers, an explicit enumeration of the state and observation spaces is not needed."

How to define state space and action space implicitly? Could you give us some code examples using QuickMDP function?

[zsunberg]

Hi @NeroBlackstone two examples are the observation and state space in the partially observable mountaincar example. http://juliapomdp.github.io/POMDPs.jl/stable/def_pomdp/#po-mountaincar

There is no states keyword argument, but the type of the state is inferred from initialstate. Similarly, there is no explicit definition of the observation space via the observations keyword argument, but the type is inferred from the obstype argument.