Pith Number

pith:MDDWX236

pith:2018:MDDWX236M2OZJ473VX3VYROP6W

not attested not anchored not stored refs pending

A Greedy Search Tree Heuristic for Symbolic Regression

Fabricio Olivetti de Franca

arxiv:1801.01807 v1 · 2018-01-04 · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MDDWX236M2OZJ473VX3VYROP6W}

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	2026-05-18T00:22:38.967263Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

60c76beb7e669d94f3fbadf75c45cff58fb2786c195e7ee13b0f32ac80259e7e

Aliases

arxiv: 1801.01807 · arxiv_version: 1801.01807v1 · doi: 10.48550/arxiv.1801.01807 · pith_short_12: MDDWX236M2OZ · pith_short_16: MDDWX236M2OZJ473 · pith_short_8: MDDWX236

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/MDDWX236M2OZJ473VX3VYROP6W \
  | 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: 60c76beb7e669d94f3fbadf75c45cff58fb2786c195e7ee13b0f32ac80259e7e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea6aa41f6af556a83943e7504995fa419de9c861d2c611abfd47dd4af27c621c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2018-01-04T18:30:38Z",
    "title_canon_sha256": "1311fc7e1e32c37087bb6df4c5ddfa3339c9285f1295d4d2be5c66130b9d660b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.01807",
    "kind": "arxiv",
    "version": 1
  }
}