craam::msen::SampleDiscretizerSD< State, Action, SAHash, SHash > Class Template Reference

Turns arbitrary samples to discrete ones (with continuous numbers assigned to states) assuming that actions are state dependent. More...

#include <Samples.hpp>

Public Member Functions
	SampleDiscretizerSD ()
	Constructs new internal discrete samples.
void	add_samples (const Samples< State, Action > &samples)
	Adds samples to the discrete samples.
long	add_state (const State &dstate)
	Returns a state index, and creates a new one if it does not exists.
long	add_action (const State &dstate, const Action &action)
	Returns an action index, and creates a new one if it does not exists.
shared_ptr< DiscreteSamples >	get_discrete ()
	Returns a shared pointer to the discrete samples.

Protected Attributes
shared_ptr< DiscreteSamples >	discretesamples
unordered_map< pair< State, Action >, long, SAHash >	action_map
unordered_map< State, long, SHash >	action_count
	keeps the number of actions for each state
unordered_map< State, long, SHash >	state_map

Detailed Description

template<typename State, typename Action, typename SAHash = std::hash<pair<State, Action>>, typename SHash = std::hash<State>>
class craam::msen::SampleDiscretizerSD< State, Action, SAHash, SHash >

Turns arbitrary samples to discrete ones (with continuous numbers assigned to states) assuming that actions are state dependent.

The internally-held discrete samples can be accessed and modified from the outside. Also, adding more samples will modify the discrete samples.

See SampleDiscretizerSI for a version in which action names are independent of states.

A new hash function can be defined as follows:

namespace std{
    template<> struct hash<pair<int,int>>{
        size_t operator()(pair<int,int> const& s) const{
            boost::hash<pair<int,int>> h;
            return h(s);
        };
    }
};

Template Parameters

State	Type of state in the source samples
Action	Type of action in the source samples
SAhash	Hash function for pair<State, Action>
Shash	Hash function for decision states

A hash function hash<type> for each sample type must exists.

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The documentation for this class was generated from the following file:

• craam/Samples.hpp