/
dataset.go
272 lines (243 loc) · 4.88 KB
/
dataset.go
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package main
import (
"bufio"
"encoding/binary"
"errors"
"fmt"
"io"
"os"
"runtime"
"strconv"
"strings"
)
type (
Data struct {
Input []int16
Score int16
Outcome int8
}
)
func countSamples(paths []string) int64 {
fmt.Printf("Paths to load %s\n", paths)
totalCount := int64(0)
countLines := func(f *os.File) int64 {
count := int64(0)
input := bufio.NewScanner(f)
for input.Scan() {
count++
if err := input.Err(); err != nil {
panic(err)
}
}
return count
}
for _, path := range paths {
file, err := os.Open(path)
if err != nil {
panic(err)
}
defer file.Close()
totalCount += countLines(file)
}
fmt.Printf("Loading %d samples\n", totalCount)
return totalCount
}
func SaveDataset(paths string, file string) {
pathsArray := strings.Split(paths, ",")
f, err := os.Create(file)
if err != nil {
panic(err)
}
defer f.Close()
buf8 := make([]byte, 8)
samples := countSamples(pathsArray)
binary.LittleEndian.PutUint64(buf8, uint64(samples))
_, err = f.Write(buf8)
if err != nil {
panic(err)
}
var buf4 = make([]byte, 4)
for _, path := range pathsArray {
file, err := os.Open(path)
if err != nil {
panic(err)
}
defer file.Close()
reader := bufio.NewReader(file)
skipNext := false
for true {
buf, pre, err := reader.ReadLine()
if errors.Is(err, io.EOF) {
break
} else if err != nil {
panic(err)
}
skipNext = pre
if pre {
continue
} else if skipNext {
skipNext = false
continue
}
line := string(buf)
if line == "" {
break
}
sample := ParseLine(line)
binary.LittleEndian.PutUint16(buf4, uint16(sample.Outcome))
_, err = f.Write(buf4)
if err != nil {
panic(err)
}
binary.LittleEndian.PutUint16(buf4, uint16(sample.Score))
_, err = f.Write(buf4)
if err != nil {
panic(err)
}
binary.LittleEndian.PutUint16(buf4, uint16(len(sample.Input)))
_, err = f.Write(buf4)
if err != nil {
panic(err)
}
for _, i := range sample.Input {
binary.LittleEndian.PutUint16(buf4, uint16(i))
_, err = f.Write(buf4)
if err != nil {
panic(err)
}
}
}
}
}
func LoadBinpack(path string) []Data {
f, err := os.Open(path)
if err != nil {
panic(err)
}
defer f.Close()
buf8 := make([]byte, 8)
_, err = io.ReadFull(f, buf8)
if err != nil {
panic(err)
}
counter := int64(0)
var buf4 = make([]byte, 4)
data := make([]Data, binary.LittleEndian.Uint64(buf8))
for i := 0; i < len(data); i++ {
_, err = io.ReadFull(f, buf4)
if err != nil {
panic(err)
}
outcome := int8(binary.LittleEndian.Uint16(buf4))
_, err = io.ReadFull(f, buf4)
if err != nil {
panic(err)
}
score := int16(binary.LittleEndian.Uint16(buf4))
_, err = io.ReadFull(f, buf4)
if err != nil {
panic(err)
}
inputLength := binary.LittleEndian.Uint16(buf4)
input := make([]int16, inputLength)
for j := uint16(0); j < inputLength; j++ {
_, err = io.ReadFull(f, buf4)
if err != nil {
panic(err)
}
input[j] = int16(binary.LittleEndian.Uint16(buf4))
}
data[i] = Data{
Score: score,
Outcome: outcome,
Input: input,
}
if counter == 2000 {
fmt.Printf("%d of %d is loaded\r", i, len(data))
counter = 0
}
counter++
}
return data
}
func LoadDataset(paths string) []Data {
pathsArray := strings.Split(paths, ",")
data := make([]Data, countSamples(pathsArray))
samples := 0
for _, path := range pathsArray {
file, err := os.Open(path)
if err != nil {
panic(err)
}
defer file.Close()
reader := bufio.NewReader(file)
skipNext := false
for true {
buf, pre, err := reader.ReadLine()
if errors.Is(err, io.EOF) {
break
} else if err != nil {
panic(err)
}
if pre {
continue
} else if skipNext {
skipNext = false
continue
}
skipNext = pre
line := string(buf)
if line == "" {
break
}
sample := ParseLine(line)
data[samples] = sample
samples += 1
}
}
runtime.GC()
return data
}
func ParseLine(line string) Data {
startIndex := 0
endIndex := strings.Index(line, ";")
if endIndex == -1 {
panic(fmt.Sprintf("Bad line %s\n", line))
}
pos := FromFen(line[:endIndex])
// wm := pos[len(pos)-1] == 768
startIndex = endIndex + 7
endIndex = strings.Index(line, ";eval")
if endIndex == -1 {
panic(fmt.Sprintf("Bad line %s\n", line))
}
score, err := strconv.Atoi(line[startIndex:endIndex])
if err != nil {
panic(fmt.Sprintf("Bad line %s\n%s\n", line, err))
}
startIndex = strings.Index(line, ";outcome:") + 9
if startIndex == -1 {
panic(fmt.Sprintf("Bad line %s\n%s\n", line, err))
}
var outcome int8
if line[startIndex:] == "0.0" {
outcome = 0
} else if line[startIndex:] == "1.0" {
outcome = 2
} else {
outcome = 1
}
// if !wm {
// score *= -1
// if outcome == 2 {
// outcome = 0
// } else if outcome == 0 {
// outcome = 2
// }
// }
return Data{
Input: pos,
Score: int16(score),
Outcome: outcome,
}
}