Double Auction

UnitDemand and UnitSupply

UnitDemand represents a buyer. Pass the agent’s willingness to pay for each unit as positional arguments. Likewise UnitSupply represents a seller and takes the willingness to accept for each unit. Both classes store the list of valuations and expose valuation for the first unit and endowment for the number of units held.

Example

The snippet below creates two buyers and two sellers, clears the auction and plots the demand and supply curves.

from freeride.double_auction import UnitDemand, UnitSupply, DoubleAuction

buyers = [UnitDemand(10), UnitDemand(9)]
sellers = [UnitSupply(6), UnitSupply(4)]

auction = DoubleAuction(*buyers, *sellers)
print(auction)

ax = auction.plot()

The output displays the clearing price range and quantity traded, while the plot shows the demand and supply schedules as step functions.