OneShotAWI

class scml.oneshot.OneShotAWI(world, agent)

Bases: negmas.situated.awi.AgentWorldInterface

The agent world interface for the one-shot game.

This class contains all the methods needed to access the simulation to extract information which are divided into 4 groups:

Static World Information:

Information about the world and the agent that does not change over time. These include:

1. Market Information:

• n_products: Number of products in the production chain.

• n_processes: Number of processes in the production chain.

• n_competitors: Number of other factories on the same production level.

• all_suppliers: A list of all suppliers by product.

• all_consumers: A list of all consumers by product.

• is_system: Is the given system ID corresponding to a system agent?

• is_bankrupt: Is the given agent bankrupt? None asks about self

• catalog_prices: A list of the catalog prices (by product).

• price_multiplier: The multiplier multiplied by the trading/catalog price when the negotiation agendas are created to decide the maximum and lower quantities.

• is_exogenous_forced: Are exogenous contracts always forced or can the agent decide not to sign them.

• current_step: Current simulation step (inherited from negmas.situated.AgentWorldInterface ).

• n_steps: Number of simulation steps (inherited from negmas.situated.AgentWorldInterface ).

• relative_time: fraction of the simulation completed (inherited from negmas.situated.AgentWorldInterface).

• state: The full state of the agent ( OneShotState ).

• settings The system settings (inherited from negmas.situated.AgentWorldInterface ).

2. Agent Information:

• profile: Gives the agent profile including its production cost, number of production lines, input product index, mean of its delivery penalties, mean of its disposal costs, standard deviation of its shortfall penalties and standard deviation of its disposal costs. See OneShotProfile for full description. This information is private information and no other agent knows it.

• n_lines: the number of production lines in the factory (private information).

• is_first_level: Is the agent in the first production level (i.e. it is an input agent that buys the raw material).

• is_last_level: Is the agent in the last production level (i.e. it is an output agent that sells the final product).

• is_middle_level: Is the agent neither a first level nor a last level agent

• my_input_product: The input product to the factory controlled by the agent.

• my_output_product: The output product from the factory controlled by the agent.

• level: The production level which is numerically the same as the input product.

• my_suppliers: A list of IDs for all suppliers to the agent (i.e. agents that can sell the input product of the agent).

• my_consumers: A list of IDs for all consumers to the agent (i.e. agents that can buy the output product of the agent).

• penalties_scale: The scale at which to calculate disposal cost/delivery penalties. “trading” and “catalog” mean trading and catalog prices. “unit” means the contract’s unit price while “none” means that disposal cost/shortfall penalty are absolute.

• n_input_negotiations: Number of negotiations with suppliers.

• n_output_negotiations: Number of negotiations with consumers.

Dynamic World Information:

Information about the world and the agent that changes over time.

1. Market Information:

• trading_prices: The trading prices of all products. This information is only available if publish_trading_prices is set in the world.

• exogenous_contract_summary: A list of n_products tuples each giving the total quantity and average price of exogenous contracts for a product. This information is only available if publish_exogenous_summary is set in the world.

2. Other Agents’ Information:

• reports_of_agent: Gives all past financial reports of a given agent. See FinancialReport for details.

• reports_at_step: Gives all reports of all agents at a given step. See FinancialReport for details.

3. Current Negotiations Information:

• current_input_issues: The current issues for all negotiations to buy the input product of the agent. If the agent is at level zero, this will be empty.

• current_output_issues: The current issues for all negotiations to buy the output product of the agent. If the agent is at level n_products - 1, this will be empty.

4. Agent Information:

• current_exogenous_input_quantity: The total quantity the agent have in its input exogenous contract.

• current_exogenous_input_price: The total price of the agent’s input exogenous contract.

• current_exogenous_output_quantity: The total quantity the agent have in its output exogenous contract.

• current_exogenous_output_price: The total price of the agent’s output exogenous contract.

• current_disposal_cost: The disposal cost per unit item in the current step.

• current_shortfall_penalty: The shortfall penalty per unit item in the current step.

• current_balance: The current balance of the agent

Services (All inherited from negmas.situated.AgentWorldInterface):

• logdebug/loginfo/logwarning/logerror: Logs to the world log at the given log level.

• logdebug_agent/loginf_agnet/…: Logs to the agent specific log at the given log level.

• bb_query: Queries the bulletin-board.

• bb_read: Read a section of the bulletin-board.

Attributes Summary

accepted_negotiation_requests	A list of negotiation requests sent to this agent that are already accepted by it.
all_consumers	Returns a list of agent IDs for all consumers for every product
all_suppliers	Returns a list of agent IDs for all suppliers for every product
catalog_prices	Returns the catalog prices of all products
current_balance
current_disposal_cost	Cost of storing one unit (penalizes buying too much/ selling too little)
current_exogenous_input_price	The exogenous contracts for the input (this step)
current_exogenous_input_quantity	The exogenous contracts for the input (this step)
current_exogenous_output_price	The exogenous contracts for the input (this step)
current_exogenous_output_quantity	The exogenous contracts for the input (this step)
current_input_issues	rtype list[Issue]
current_inventory
current_output_issues	rtype list[Issue]
current_shortfall_penalty	Cost of failure to deliver one unit (penalizes buying too little / selling too much)
current_step	Current simulation step
default_signing_delay	rtype int
exogenous_contract_summary	The exogenous contracts in the current step for all products
initialized	Was the agent initialized (i.e.
is_exogenous_forced	Are exogenous contracts forced in the sense that the agent cannot decide not to sign them?
is_first_level	Whether this agent is in the first production level
is_last_level	Whether this agent is in the last production level
is_middle_level	Whether this agent is in neither in the first nor in the last level
level	The production level which is the index of the process for this factory (or the index of its input product)
my_consumers	Returns a list of IDs for all the agent's consumers (agents that can consume at least one product it may produce).
my_input_product	the product I need to buy
my_output_product	the product I need to sell
my_suppliers	Returns a list of IDs for all of the agent's suppliers (agents that can supply the product I need).
n_competitors	Returns the number of factories/agents in the same production level
n_input_negotiations	Number of negotiations with suppliers at every step
n_lines	The number of lines in the corresponding factory.
n_output_negotiations	Number of negotiations with consumers at every step
n_processes	Returns the number of processes in the system
n_products	Returns the number of products in the system
n_steps	Number of steps in a simulation
negotiation_requests	A list of the negotiation requests sent by this agent that are not yet accepted or rejected.
params	Returns the basic parameters of the world
penalties_scale	rtype str
price_multiplier	Controls the minimum and maximum prices in the negotiation agendas
profile	Gets the profile (static private information) associated with the agent
relative_time	Relative time of the simulation going from 0 to 1
requested_negotiations	The negotiations currently requested by the agent.
running_negotiations	The negotiations currently requested by the agent.
settings
trading_prices	Returns the current trading prices of all products
unsigned_contracts	All contracts that are not yet signed.

Methods Summary

bb_query(section, query[, query_keys])	Returns all records in the given section/sections of the bulletin-board that satisfy the query
bb_read(section, key)	Reads the value associated with given key from the bulletin board
bb_record(section, value[, key])	Records data in the given section of the bulletin board
bb_remove(section, *[, query, key, ...])	Removes a value or a set of values from the bulletin Board
execute(action[, callback])	Executes an action in the world simulation
is_bankrupt([aid])	Checks whether an agent is a system agent or not
is_system(aid)	Checks whether an agent is a system agent or not
logdebug(msg)	Logs a WARNING message
logdebug_agent(msg)	Logs a WARNING message to the agent's log
logerror(msg)	Logs a WARNING message
logerror_agent(msg)	Logs a WARNING message to the agent's log
loginfo(msg)	Logs an INFO message
loginfo_agent(msg)	Logs an INFO message to the agent's log
logwarning(msg)	Logs a WARNING message
logwarning_agent(msg)	Logs a WARNING message to the agent's log
penalty_multiplier(is_input, unit_price)	Returns the penalty multiplier for a contract with the give unit price.
reports_at_step(step)	Returns a dictionary mapping agent ID to its financial report for the given time-step
reports_of_agent(aid)	Returns a dictionary mapping time-steps to financial reports of the given agent
request_negotiation_about(issues, partners, ...)	Requests to start a negotiation with some other agents
run_negotiation(issues, partners, negotiator)	Runs a negotiation until completion
run_negotiations(issues, partners, negotiators)	Requests to run a set of negotiations simultaneously.
state()	Returns the private state of the agent in that world

Attributes Documentation

accepted_negotiation_requests

A list of negotiation requests sent to this agent that are already accepted by it.

Remarks:

• These negotiations did not start yet as they are still not accepted by all partners. Once that happens, they will be moved to running_negotiations

Return type

list[NegotiationRequestInfo]

all_consumers

Returns a list of agent IDs for all consumers for every product

Return type

list[list[str]]

all_suppliers

Returns a list of agent IDs for all suppliers for every product

Return type

list[list[str]]

catalog_prices

Returns the catalog prices of all products

Return type

ndarray

current_balance

current_disposal_cost

Cost of storing one unit (penalizes buying too much/ selling too little)

Return type

float

current_exogenous_input_price

The exogenous contracts for the input (this step)

Return type

int

current_exogenous_input_quantity

The exogenous contracts for the input (this step)

Return type

int

current_exogenous_output_price

The exogenous contracts for the input (this step)

Return type

int

current_exogenous_output_quantity

The exogenous contracts for the input (this step)

Return type

int

current_input_issues

Return type

list[Issue]

current_inventory

current_output_issues

Return type

list[Issue]

current_shortfall_penalty

Cost of failure to deliver one unit (penalizes buying too little / selling too much)

Return type

float

current_step

Current simulation step

Return type

int

default_signing_delay

Return type

int

exogenous_contract_summary

The exogenous contracts in the current step for all products

Return type

list[tuple[int, int]]

Returns

A list of tuples giving the total quantity and total price of all revealed exogenous contracts of all products at the current step.

initialized

Was the agent initialized (i.e. was init_() called)

Return type

bool

is_exogenous_forced

Are exogenous contracts forced in the sense that the agent cannot decide not to sign them?

Return type

bool

is_first_level

Whether this agent is in the first production level

is_last_level

Whether this agent is in the last production level

is_middle_level

Whether this agent is in neither in the first nor in the last level

level

The production level which is the index of the process for this factory (or the index of its input product)

my_consumers

Returns a list of IDs for all the agent’s consumers (agents that can consume at least one product it may produce).

Return type

list[str]

my_input_product

the product I need to buy

Return type

int

my_output_product

the product I need to sell

Return type

int

my_suppliers

Returns a list of IDs for all of the agent’s suppliers (agents that can supply the product I need).

Return type

list[str]

n_competitors

Returns the number of factories/agents in the same production level

Return type

int

n_input_negotiations

Number of negotiations with suppliers at every step

Return type

int

n_lines

The number of lines in the corresponding factory. You can read state to get this among other information

Return type

int

n_output_negotiations

Number of negotiations with consumers at every step

Return type

int

n_processes

Returns the number of processes in the system

Return type

int

n_products

Returns the number of products in the system

Return type

int

n_steps

Number of steps in a simulation

Return type

int

negotiation_requests

A list of the negotiation requests sent by this agent that are not yet accepted or rejected.

Remarks:

• These negotiations did not start yet as they are still not accepted by all partners. Once that happens, they will be moved to running_negotiations

Return type

list[NegotiationRequestInfo]

params

Returns the basic parameters of the world

Return type

dict[str, Any]

penalties_scale

Return type

str

price_multiplier

Controls the minimum and maximum prices in the negotiation agendas

Remarks:

• The base price is either the catalog price if trading price information is not public or the trading price.

• The minimum unit price in any negotiation agenda is the base price of the previous product in the chain **divided by the multiplier. If that is less than 1, the minimum unit price becomes 1.

• The maximum unit price in any negotiation agenda is the base price of the previous product in the chain **multiplied by the multiplier. If that is less than 1, the minimum unit price becomes 1.

profile

Gets the profile (static private information) associated with the agent

Return type

OneShotProfile

relative_time

Relative time of the simulation going from 0 to 1

Return type

float

requested_negotiations

The negotiations currently requested by the agent.

Return type

list[NegotiationRequestInfo]

Returns

A list of negotiation request information objects (NegotiationRequestInfo)

running_negotiations

The negotiations currently requested by the agent.

Return type

list[RunningNegotiationInfo]

Returns

A list of negotiation information objects (RunningNegotiationInfo)

settings

trading_prices

Returns the current trading prices of all products

Return type

ndarray

unsigned_contracts

All contracts that are not yet signed.

Return type

list[Contract]

Methods Documentation

bb_query(section, query, query_keys=False)

Returns all records in the given section/sections of the bulletin-board that satisfy the query

Parameters

• section (str | list[str] | None) – Either a section name, a list of sections or None specifying ALL public sections (see remarks)

• query (Any) – The query which is USUALLY a dict with conditions on it when querying values and a RegExp when

• keys (querying) –

• query_keys – Whether the query is to be applied to the keys or values.

Returns

value pairs giving all records that satisfied the given requirements.

Return type

• A dictionary with key

Remarks:

• A public section is a section with a name that does not start with an underscore

• If a set of sections is given, and two records in different sections had the same key, only one of them will be returned

• Key queries use regular expressions and match from the beginning using the standard re.match function

bb_read(section, key)

Reads the value associated with given key from the bulletin board

Parameters

• section (str) – section name

• key (str) – key

Return type

Optional[Any]

Returns

Content of that key in the bulletin-board

bb_record(section, value, key=None)

Records data in the given section of the bulletin board

Parameters

• section (str) – section name (can contain subsections separated by ‘/’)

• key (Optional[str]) – The key

• value (Any) – The value

Return type

None

bb_remove(section, *, query=None, key=None, query_keys=False, value=None)

Removes a value or a set of values from the bulletin Board

Parameters

• section (list[str] | str | None) – The section

• query (Optional[Any]) – the query to use to select what to remove

• key (Optional[str]) – the key to remove (no need to give a full query)

• query_keys (bool) – Whether to apply the query (if given) to keys or values

• value (Optional[Any]) – Value to be removed

Returns

Success of failure

Return type

bool

execute(action, callback=None)

Executes an action in the world simulation

Return type

bool

is_bankrupt(aid=None)

Checks whether an agent is a system agent or not

Parameters

aid (Optional[str]) – Agent ID

Return type

bool

is_system(aid)

Checks whether an agent is a system agent or not

Parameters

aid (str) – Agent ID

Return type

bool

logdebug(msg)

Logs a WARNING message

Parameters

msg (str) – The message to log

Returns:

Return type

None

logdebug_agent(msg)

Logs a WARNING message to the agent’s log

Parameters

msg (str) – The message to log

Returns:

Return type

None

logerror(msg)

Logs a WARNING message

Parameters

msg (str) – The message to log

Returns:

Return type

None

logerror_agent(msg)

Logs a WARNING message to the agent’s log

Parameters

msg (str) – The message to log

Returns:

Return type

None

loginfo(msg)

Logs an INFO message

Parameters

msg (str) – The message to log

Returns:

Return type

None

loginfo_agent(msg)

Logs an INFO message to the agent’s log

Parameters

msg (str) – The message to log

Returns:

Return type

None

logwarning(msg)

Logs a WARNING message

Parameters

msg (str) – The message to log

Returns:

Return type

None

logwarning_agent(msg)

Logs a WARNING message to the agent’s log

Parameters

msg (str) – The message to log

Returns:

Return type

None

penalty_multiplier(is_input, unit_price)

Returns the penalty multiplier for a contract with the give unit price.

Remarks:

• The unit price is only needed if the penalties_scale is unit. For all other options (trading, catalog, none), the penalty scale does not depend on the unit price.

Return type

float

reports_at_step(step)

Returns a dictionary mapping agent ID to its financial report for the given time-step

Return type

dict[str, FinancialReport]

reports_of_agent(aid)

Returns a dictionary mapping time-steps to financial reports of the given agent

Return type

dict[int, FinancialReport]

request_negotiation_about(issues, partners, req_id, roles=None, annotation=None, mechanism_name=None, mechanism_params=None, group=None)

Requests to start a negotiation with some other agents

Parameters

• req_id (str) –

• issues (list[Issue]) – Negotiation issues

• annotation (Optional[dict[str, Any]]) – Extra information to be passed to the partners when asking them to join the negotiation

• partners (list[str]) – A list of partners to participate in the negotiation. Note that the caller itself may not be in this list which makes it possible for an agent to request a negotaition that it does not participate in. If that is not to be allowed in some world, override this method and explicitly check for these kinds of negotiations and return False. If partners is passed as a single string/Agent or as a list containing a single string/Agent, then he caller will be added at the beginning of the list. This will only be done if roles was passed as None.

• roles (Optional[list[str]]) – The roles of different partners. If None then each role for each partner will be None

• mechanism_name (Optional[str]) – Name of the mechanism to use. It must be one of the mechanism_names that are supported by the

• None (must also be) –

• my_role (then roles and) –

• None –

• mechanism_params (Optional[dict[str, Any]]) – A dict of parameters used to initialize the mechanism object

• group (Optional[str]) – An opational identifier for the group to which this negotiation belongs. It is not used by the system but is logged for debugging purposes. Moreover, the agent have access to it through its negotiations property.

Return type

bool

Returns

List[“Agent”] the list of partners who rejected the negotiation if any. If None then the negotiation was accepted. If empty then the negotiation was not started from the world manager

Remarks:

• The function will create a request ID that will be used in callbacks on_neg_request_accepted and

on_neg_request_rejected

run_negotiation(issues, partners, negotiator, preferences=None, caller_role=None, roles=None, annotation=None, mechanism_name=None, mechanism_params=None)

Runs a negotiation until completion

Parameters

• partners (Collection[str | Agent]) – A list of partners to participate in the negotiation. Note that the caller itself may not be in this list which makes it possible for an agent to request a negotaition that it does not participate in. If that is not to be allowed in some world, override this method and explicitly check for these kinds of negotiations and return False. If partners is passed as a single string/Agent or as a list containing a single string/Agent, then he caller will be added at the beginning of the list. This will only be done if roles was passed as None.

• negotiator (Negotiator) – The negotiator to be used in the negotiation

• preferences (Optional[Preferences]) – The preferences. Only needed if the negotiator does not already know it

• caller_role (Optional[str]) – The role of the caller in the negotiation

• issues (Collection[Issue]) – Negotiation issues

• annotation (Optional[dict[str, Any]]) – Extra information to be passed to the partners when asking them to join the negotiation

• partners – A list of partners to participate in the negotiation

• roles (Optional[Collection[str]]) – The roles of different partners. If None then each role for each partner will be None

• mechanism_name (Optional[str]) – Name of the mechanism to use. It must be one of the mechanism_names that are supported by the

• None (must also be) –

• my_role (then roles and) –

• None –

• mechanism_params (Optional[dict[str, Any]]) – A dict of parameters used to initialize the mechanism object

Return type

tuple[Contract, NegotiatorMechanismInterface] | None

Returns

A Tuple of a contract and the nmi of the mechanism used to get it in case of success. None otherwise

run_negotiations(issues, partners, negotiators, preferences=None, caller_roles=None, roles=None, annotations=None, mechanism_names=None, mechanism_params=None, all_or_none=False)

Requests to run a set of negotiations simultaneously. Returns after all negotiations are run to completion

Parameters

• partners (list[list[str | Agent]]) – A list of partners to participate in the negotiation. Note that the caller itself may not be in this list which makes it possible for an agent to request a negotaition that it does not participate in. If that is not to be allowed in some world, override this method and explicitly check for these kinds of negotiations and return False. If partners is passed as a single string/Agent or as a list containing a single string/Agent, then he caller will be added at the beginning of the list. This will only be done if roles was passed as None.

• issues (list[Issue] | list[list[Issue]]) – Negotiation issues

• negotiators (list[Negotiator]) – The negotiator to be used in the negotiation

• ufuns – The utility function. Only needed if the negotiator does not already know it

• caller_roles (Optional[list[str]]) – The role of the caller in the negotiation

• annotations (Optional[list[dict[str, Any] | None]]) – Extra information to be passed to the partners when asking them to join the negotiation

• partners – A list of partners to participate in the negotiation

• roles (Optional[list[list[str] | None]]) – The roles of different partners. If None then each role for each partner will be None

• mechanism_names (Union[str, list[str], None]) – Name of the mechanism to use. It must be one of the mechanism_names that are supported by the

• None (must also be) –

• my_role (then roles and) –

• None –

• mechanism_params (Union[dict[str, Any], list[dict[str, Any]], None]) – A dict of parameters used to initialize the mechanism object

• all_or_none (bool) – If true, either no negotiations will be started execpt if all partners accepted

Returns

contract (None for failure) and nmi (The mechanism info [None if the corresponding partner refused to negotiation])

Return type

A list of tuples each with two values

state()

Returns the private state of the agent in that world

Return type

Any