Pith Number

pith:XAELVGJK

pith:2021:XAELVGJKCDCGGB22ZSTWQBH4Q7

not attested not anchored not stored refs pending

Improving exploration in policy gradient search: Application to symbolic optimization

Brenden K. Petersen, Claudio P. Santiago, Daniel M. Faissol, Jacob F. Pettit, Mikel Landajuela, Ruben Glatt, Soo K. Kim, T. Nathan Mundhenk

arxiv:2107.09158 v1 · 2021-07-19 · cs.LG · stat.ML

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XAELVGJKCDCGGB22ZSTWQBH4Q7}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-05T04:37:53.051890Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b808ba992a10c463075acca76804fc87ca9503b37f705af98a8b7d5bf1a4d32c

Aliases

arxiv: 2107.09158 · arxiv_version: 2107.09158v1 · doi: 10.48550/arxiv.2107.09158 · pith_short_12: XAELVGJKCDCG · pith_short_16: XAELVGJKCDCGGB22 · pith_short_8: XAELVGJK

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/XAELVGJKCDCGGB22ZSTWQBH4Q7 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: b808ba992a10c463075acca76804fc87ca9503b37f705af98a8b7d5bf1a4d32c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "102e4e3151e9a053a2773b4e3318cb22cc723a202b932b8cc2477fa8c95652ed",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2021-07-19T21:11:07Z",
    "title_canon_sha256": "fecd5a252e5aae5c4b3d08f4d6944e1ea7310d988081d27357b9eac91ea08ae0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.09158",
    "kind": "arxiv",
    "version": 1
  }
}