scml.oneshot.rl.action

Defines ways to encode and decode actions.

Module Contents

Classes

ActionManager	Manges actions of an agent in an RL environment.
FlexibleActionManager	An action manager that matches any context.

Attributes

DefaultActionManager

The default action manager

class scml.oneshot.rl.action.ActionManager

Bases: abc.ABC

Manges actions of an agent in an RL environment.

context: scml.oneshot.context.BaseContext

continuous: bool = False

n_suppliers: int

n_consumers: int

n_partners: int

abstract make_space() → gymnasium.Space

Creates the action space

abstract decode(awi: scml.oneshot.awi.OneShotAWI, action: numpy.ndarray) → dict[str, negmas.sao.common.SAOResponse]

Decodes an action from an array to a PurchaseOrder and a CounterMessage.

encode(awi: scml.oneshot.awi.OneShotAWI, responses: dict[str, negmas.sao.common.SAOResponse]) → numpy.ndarray

Encodes an action as an array. This is only used for testing so it is optional

class scml.oneshot.rl.action.FlexibleActionManager

Bases: ActionManager

An action manager that matches any context.

Parameters:

• n_prices – Number of distinct prices allowed in the action.

• max_quantity – Maximum allowed quantity to offer in any negotiation. The number of quantities is one plus that because zero is allowed to model ending negotiation.

• n_partners – Maximum of partners allowed in the action.

Remarks:

• This action manager will always generate offers that are within the price and quantity limits given in its parameters. Wen decoding them, it will scale them up so that the maximum corresponds to the actual value in the world it finds itself. For example, if n_prices is 10 and the world has only two prices currently in the price issue, it will use any value less than 5 as the minimum price and any value above 5 as the maximum price. If on the other hand the current price issue has 20 values, then it will scale by multiplying the number given in the encoded action (ranging from 0 to 9) by 19/9 which makes it range from 0 to 19 which is what is expected by the world.

• This action manager will adjust offers for different number of partners as follows: - If the true number of partners is larger than n_partners used by this action manager,

  it will simply use n_partners of them and always end negotiations with the rest of them.

  • If the true number of partners is smaller than n_partners, it will use the first n_partners values in the encoded action and increase the quantities of any counter offers (i.e. ones in which the response is REJECT_OFFER) by the amount missing from the ignored partners in the encoded action up to the maximum quantities allowed by the current negotiation context. For example, if n_partneers is 4 and we have only 2 partners in reality, and the received quantities from partners were [4, 3] while the maximum quantity allowed is 10 and the encoded action was [2, *, 3, *, 2, *, 1, *] (where we ignored prices), then the encoded action will be converted to [(Reject, 5, *), (Accept, 3, *)] where the 3 extra units that were supposed to be offered to the last two partners are moved to the first partner. If the maximum quantity allowed was 4 in that example, the result will be [(Reject, 4, *), (Accept, 3, *)].

capacity_multiplier: int = 1

n_prices: int = 2

max_group_size: int = 2

reduce_space_size: bool = True

extra_checks: bool = False

max_quantity: int

__attrs_post_init__()

make_space() → gymnasium.spaces.MultiDiscrete | gymnasium.spaces.Box

Creates the action space

decode(awi: scml.oneshot.awi.OneShotAWI, action: numpy.ndarray) → dict[str, negmas.sao.common.SAOResponse]

Generates offers to all partners from an encoded action. Default is to return the action as it is assuming it is a dict[str, SAOResponse]

encode(awi: scml.oneshot.awi.OneShotAWI, responses: dict[str, negmas.sao.common.SAOResponse]) → numpy.ndarray

Receives offers for all partners and generates the corresponding action. Used mostly for debugging and testing.

scml.oneshot.rl.action.DefaultActionManager

The default action manager