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|
package entropy
import (
"cmp"
"database/sql"
"encoding/gob"
"os"
"time"
"github.com/jonasknobloch/mbpe"
"go.jknobloc.com/x/dict"
"go.jknobloc.com/x/shelf"
"go.jknobloc.com/x/tui"
)
type segmentsEntry struct {
Value []string
OK bool
}
const BufferSize = 1024
func Run(db *sql.DB, d *dict.Dict[*Entry]) error {
// m := 0
//
// for _, v := range d.Values() {
// m = max(m, len(v.TokenIDs))
// }
//
// if m > BufferSize {
// // TODO handle
// }
var rows *sql.Rows
if r, err := db.Query(`SELECT * FROM context`); err != nil {
return err
} else {
rows = r
}
defer rows.Close()
bufferTokens := make([]uint8, 0, BufferSize)
bufferLogProbs := make([]float32, 0, BufferSize)
doc := -1
maxTokens := 100000
currentTokens := 0
pb := tui.NewProgressBar("Adding LogProbs", 20, 58508191, time.Now())
pb.Start(1*time.Second, func() int {
return pb.Completed()
})
for rows.Next() {
if currentTokens == maxTokens {
break
}
currentTokens++
var uid int
var token int
var logProb float32
var pos int
if err := rows.Scan(&uid, &token, &logProb, &pos); err != nil {
return err
}
if uid != doc || len(bufferTokens) == BufferSize {
bufferTokens = bufferTokens[:0]
bufferLogProbs = bufferLogProbs[:0]
doc = uid
}
bufferTokens = append(bufferTokens, uint8(token))
bufferLogProbs = append(bufferLogProbs, logProb)
n := len(bufferTokens)
// fmt.Print(n)
for i := range n {
entry, ok := d.GetBytes(bufferTokens[i:n])
if !ok {
continue
}
for j := range entry.LogProbs {
entry.LogProbs[j] += bufferLogProbs[j]
}
entry.N++
}
pb.Add(1)
}
if err := rows.Err(); err != nil {
return err
}
// debug
d.Sort(func(a, b dict.Entry[*Entry]) int {
return cmp.Compare(b.Val.N, a.Val.N)
})
pb.Close()
for _, e := range d.Values() {
spikes(e)
}
if err := serializeSegments(d); err != nil {
return err
}
return nil
}
func spikes(e *Entry) {
for i := range len(e.LogProbs) {
if i == 0 {
continue
}
if i == 1 && e.TokenIDs[0] == 220 {
continue
}
// TODO threshold
if d := e.LogProbs[i-1] - e.LogProbs[i]; d > 0 {
e.Bounds[i] = true
}
}
}
func serializeSegments(d *dict.Dict[*Entry]) error {
r := make(map[string]segmentsEntry, d.Len())
for _, e := range d.Values() {
segments := make([]string, 0)
decoded := decode(e.Encoded)
i := 0
for j, b := range e.Bounds {
if b {
segments = append(segments, encode(decoded[i:j]))
i = j
}
}
segments = append(segments, encode(decoded[i:])) // TODO or just use OK false?
// debug
if i == 0 {
continue
}
r[e.Encoded] = segmentsEntry{
Value: segments,
OK: true,
}
}
var file *os.File
if f, err := os.Create(shelf.Abs("results/entropy/minipile/segments.gob")); err != nil {
return err
} else {
file = f
}
defer file.Close()
enc := gob.NewEncoder(file)
return enc.Encode(r)
}
func encode(s string) string {
result := ""
for _, b := range []byte(s) {
result += mbpe.BytesChar[b]
}
return result
}
func decode(s string) string {
result := make([]byte, 0)
for _, r := range s {
result = append(result, mbpe.CharBytes[string(r)])
}
return string(result)
}
|
