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58efb6fec8
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0c30e880cc |
@ -29,7 +29,6 @@ func RunAuction(g BidderGenerator) (float64, Bidder) {
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return prevBid, highBidder
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return prevBid, highBidder
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}
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}
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/**
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/**
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* RunAuctionVerbosely simulates a single-bid second-price auction with no
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* RunAuctionVerbosely simulates a single-bid second-price auction with no
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* reserve price between all bidders emitted by the provided generator,
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* reserve price between all bidders emitted by the provided generator,
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@ -39,7 +38,7 @@ func RunAuction(g BidderGenerator) (float64, Bidder) {
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* Use CappedBidderGenerator to limit the size of the auction and therefore
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* Use CappedBidderGenerator to limit the size of the auction and therefore
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* the number of bidders on the list.
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* the number of bidders on the list.
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*/
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*/
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func RunAuctionVerbosely(g BidderGenerator) float64, []Bidder {
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func RunAuctionVerbosely(g BidderGenerator) (float64, []Bidder) {
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var bidders []Bidder
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var bidders []Bidder
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for b, ok := g.Generate(); ok; b, ok = g.Generate() {
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for b, ok := g.Generate(); ok; b, ok = g.Generate() {
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bidders = append(bidders, b)
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bidders = append(bidders, b)
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@ -57,8 +57,9 @@ type Bidder struct {
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/**
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/**
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* ValueBelief returns how much the bidder *thinks* the item is worth to them.
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* ValueBelief returns how much the bidder *thinks* the item is worth to them.
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* The actual value to them is b.Value.
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* The actual value to them is b.Value.
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*/
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func (b Bidder) ValueBelief() float64 {
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func (b Bidder) ValueBelief() float64 {
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return b.Value + b.Irrationality;
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return b.Value + b.Irrationality
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}
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}
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/**
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/**
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@ -79,7 +80,7 @@ func (b Bidder) BidCeiling() float64 {
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* than their calculated ceiling if they had the money to do so, but they don't.
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* than their calculated ceiling if they had the money to do so, but they don't.
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*/
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*/
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func (b Bidder) CashCapped() bool {
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func (b Bidder) CashCapped() bool {
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return b.ValueBelief() > b.Cash;
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return b.ValueBelief() > b.Cash
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}
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}
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/**
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/**
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@ -12,7 +12,7 @@ type Distribution interface {
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* Draw returns the next float64 from the distribution and true, or
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* Draw returns the next float64 from the distribution and true, or
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* zero and false if the distribution is exhausted or otherwise unusable.
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* zero and false if the distribution is exhausted or otherwise unusable.
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*/
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*/
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Draw() float64, bool
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Draw() (float64, bool)
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}
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}
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/**
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/**
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@ -23,7 +23,7 @@ type BidderGenerator interface {
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* Generate returns the next Bidder and true, or a zero Bidder and false if
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* Generate returns the next Bidder and true, or a zero Bidder and false if
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* the generator is exhausted or otherwise unusable.
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* the generator is exhausted or otherwise unusable.
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*/
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*/
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Generate() Bidder, bool
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Generate() (Bidder, bool)
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}
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}
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/**
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/**
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@ -53,7 +53,7 @@ func (b *BiddersFromDistributions) Generate() (Bidder, bool) {
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return Bidder{}, false
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return Bidder{}, false
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}
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}
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return Bidder {
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return Bidder{
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Value: value,
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Value: value,
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Irrationality: irrationality,
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Irrationality: irrationality,
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Cash: cash,
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Cash: cash,
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@ -76,7 +76,7 @@ type NormalDistribution struct {
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* Draw implements Distribution.
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* Draw implements Distribution.
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*/
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*/
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func (n *NormalDistribution) Draw() (float64, bool) {
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func (n *NormalDistribution) Draw() (float64, bool) {
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return n.Rand.NormFloat64() * n.StdDev + n.Mean, true
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return n.Rand.NormFloat64()*n.StdDev + n.Mean, true
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}
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}
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/**
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/**
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@ -88,7 +88,7 @@ type ConstDistribution float64
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* Draw implements Distribution.
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* Draw implements Distribution.
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*/
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*/
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func (c ConstDistribution) Draw() (float64, bool) {
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func (c ConstDistribution) Draw() (float64, bool) {
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return (float64)c, true
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return float64(c), true
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}
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}
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/**
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/**
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