Compare commits
2 Commits
16f718dcdc
...
3695f2704b
Author | SHA1 | Date | |
---|---|---|---|
3695f2704b | |||
0b68cb80bf |
104
main/main.go
104
main/main.go
@ -1,11 +1,25 @@
|
|||||||
package main
|
package main
|
||||||
|
|
||||||
import (
|
import (
|
||||||
|
"encoding/csv"
|
||||||
|
"flag"
|
||||||
"fmt"
|
"fmt"
|
||||||
"git.chromaticdragon.app/kistaro/auctionsim/auctionsim"
|
"git.chromaticdragon.app/kistaro/auctionsim/auctionsim"
|
||||||
"log"
|
"log"
|
||||||
|
"math"
|
||||||
|
"math/rand"
|
||||||
"os"
|
"os"
|
||||||
"strconv"
|
"strings"
|
||||||
|
)
|
||||||
|
|
||||||
|
var (
|
||||||
|
bidders = flag.Int("b", 1000, "Number of bidders in each auction.")
|
||||||
|
runs = flag.Int("r", 1, "Number of auctions to run.")
|
||||||
|
|
||||||
|
errorDev = flag.Float64("d", 1.0, "Standard deviation of bidder irrationality.")
|
||||||
|
errorMean = flag.Float64("m", 0.0, "Mean of bidder irrationality. Negative values represent a bias towards underbidding.")
|
||||||
|
|
||||||
|
format = flag.String("f", "txt", "Output format: plain text (\"txt\") or CSV (\"csv\").")
|
||||||
)
|
)
|
||||||
|
|
||||||
func deltaStr(delta float64) string {
|
func deltaStr(delta float64) string {
|
||||||
@ -18,25 +32,33 @@ func deltaStr(delta float64) string {
|
|||||||
return "broken even"
|
return "broken even"
|
||||||
}
|
}
|
||||||
|
|
||||||
func main() {
|
func normalizeFormat() error {
|
||||||
num := int64(1000)
|
*format = strings.ToLower(*format)
|
||||||
if len(os.Args) > 1 {
|
if *format == "txt" {
|
||||||
n, err := strconv.ParseInt(os.Args[1], 0, 64)
|
return nil
|
||||||
if err != nil {
|
|
||||||
log.Fatalf("can't parse %q as a number of bidders: %v", os.Args[1], err)
|
|
||||||
}
|
}
|
||||||
num = n
|
if *format == "csv" {
|
||||||
}
|
return nil
|
||||||
if num <= 1 {
|
|
||||||
log.Fatalf("can't run an auction with %d bidders", num)
|
|
||||||
}
|
}
|
||||||
|
return fmt.Errorf("unrecognized format: %q", *format)
|
||||||
|
}
|
||||||
|
|
||||||
summary := auctionsim.Summarize(auctionsim.RunAuctionVerbosely(
|
type emitter interface {
|
||||||
&auctionsim.CappedBidderGenerator{
|
Emit(*auctionsim.ResultSummary)
|
||||||
G: auctionsim.NormalestBidderGenerator(),
|
Flush()
|
||||||
Lim: num,
|
}
|
||||||
},
|
|
||||||
))
|
type textEmitter struct {
|
||||||
|
notFirst bool
|
||||||
|
}
|
||||||
|
|
||||||
|
func (t *textEmitter) Emit(summary *auctionsim.ResultSummary) {
|
||||||
|
if !t.notFirst {
|
||||||
|
fmt.Println()
|
||||||
|
fmt.Println("-----------------")
|
||||||
|
fmt.Println()
|
||||||
|
t.notFirst = true
|
||||||
|
}
|
||||||
fmt.Printf("The auction winner paid ¤%f. They have %s.\n", summary.Price, deltaStr(summary.WinnerProfit))
|
fmt.Printf("The auction winner paid ¤%f. They have %s.\n", summary.Price, deltaStr(summary.WinnerProfit))
|
||||||
fmt.Printf("The item was worth ¤%f to them.\n", summary.WinnerValue)
|
fmt.Printf("The item was worth ¤%f to them.\n", summary.WinnerValue)
|
||||||
fmt.Printf("They would have paid up to ¤%f for it.\n", summary.WinnerMaxBid)
|
fmt.Printf("They would have paid up to ¤%f for it.\n", summary.WinnerMaxBid)
|
||||||
@ -58,3 +80,51 @@ func main() {
|
|||||||
fmt.Printf("They valued it ¤%f more than the winning bidder.\n", summary.ValueDelta)
|
fmt.Printf("They valued it ¤%f more than the winning bidder.\n", summary.ValueDelta)
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
func (*textEmitter) Flush() {}
|
||||||
|
|
||||||
|
type csvEmitter struct {
|
||||||
|
w *csv.Writer
|
||||||
|
}
|
||||||
|
|
||||||
|
func (c *csvEmitter) Emit(summary *auctionsim.ResultSummary) {
|
||||||
|
c.w.Write(summary.CSVRecord())
|
||||||
|
}
|
||||||
|
|
||||||
|
func (c *csvEmitter) Flush() {
|
||||||
|
c.w.Flush()
|
||||||
|
}
|
||||||
|
|
||||||
|
func main() {
|
||||||
|
flag.Parse()
|
||||||
|
|
||||||
|
if err := normalizeFormat(); err != nil {
|
||||||
|
log.Fatal(err)
|
||||||
|
}
|
||||||
|
|
||||||
|
e := emitter(&textEmitter{})
|
||||||
|
if *format == "csv" {
|
||||||
|
w := csv.NewWriter(os.Stdout)
|
||||||
|
e = &csvEmitter{w}
|
||||||
|
w.Write(auctionsim.ResultSummaryCSVHeader())
|
||||||
|
}
|
||||||
|
defer e.Flush()
|
||||||
|
|
||||||
|
for i := 0; i < *runs; i++ {
|
||||||
|
g := &auctionsim.BiddersFromDistributions{
|
||||||
|
Values: auctionsim.NormalestDistribution(),
|
||||||
|
Irrationalities: &auctionsim.NormalDistribution{
|
||||||
|
Rand: rand.New(rand.NewSource(int64(rand.Uint64()))),
|
||||||
|
StdDev: *errorDev,
|
||||||
|
Mean: *errorMean,
|
||||||
|
},
|
||||||
|
Bankrolls: auctionsim.ConstDistribution(math.Inf(1)),
|
||||||
|
}
|
||||||
|
e.Emit(auctionsim.Summarize(auctionsim.RunAuctionVerbosely(
|
||||||
|
&auctionsim.CappedBidderGenerator{
|
||||||
|
G: g,
|
||||||
|
Lim: int64(*bidders),
|
||||||
|
},
|
||||||
|
)))
|
||||||
|
}
|
||||||
|
}
|
||||||
|
Loading…
Reference in New Issue
Block a user