Clarification on Multi-slot Support: Which Areas Are Currently Incomplete?

[budaPunk]

auction-gym/src/main.py

Lines 35 to 37 in 065f8bf

	# Max. number of slots in every auction round
	# Multi-slot is currently not fully supported.
	max_slots = 1

I’m planning to conduct research on multi-slot auction examples and am currently checking which parts of the code need modification.
Below is what I have identified so far and need your validation.

• The classes in AuctionAllocation.py seem to already implement the logic for returning winners and prices up to the nth position.

  • auction-gym/src/AuctionAllocation.py

    Lines 26 to 35 in 065f8bf

    	class SecondPrice(AllocationMechanism):
    	''' (Generalised) Second-Price Allocation '''
    	def __init__(self):
    	super(SecondPrice, self).__init__()
    	def allocate(self, bids, num_slots):
    	winners = np.argsort(-bids)[:num_slots]
    	prices = -np.sort(-bids)[1:num_slots+1]
    	return winners, prices, prices

  • 🔧 since bid = value * eCTR the ranking is based on eCPM.
    to implement GSP in this context we need to add eCTR to allocation input,
    and set $price_i = bid_{i+1} / eCTR_{i}$ ?
• The click allocation part in Auction.py also appears to support multiple slots.

  • auction-gym/src/Auction.py

    Line 65 in 065f8bf

    outcomes = self.rng.binomial(1, CTRs[winners])

  • 🔧 For multi-slot auctions, we want to consider position effects.
    to implement this in the click allocation we can do like $outcomes = binomial(1, CTRs * posEff)$ ?

If there are any additional areas in the project’s code that require modification for conducting research on multi-slot auctions,
I would greatly appreciate your guidance.

If it is structurally impossible for the project to support multi-slot auctions, please let me know.