Pith Number

pith:FFGU3RB4

pith:2019:FFGU3RB4PUUGZR6GK6BK5JVZ4E

not attested not anchored not stored refs pending

A Feature Selection Based on Perturbation Theory

Hamid Usefi, Javad Rahimipour Anaraki

arxiv:1902.09938 v1 · 2019-02-26 · 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{FFGU3RB4PUUGZR6GK6BK5JVZ4E}

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	2026-05-17T23:52:35.015501Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

294d4dc43c7d286cc7c65782aea6b9e10827f5c7bdb36fccc867bf327c9cee57

Aliases

arxiv: 1902.09938 · arxiv_version: 1902.09938v1 · doi: 10.48550/arxiv.1902.09938 · pith_short_12: FFGU3RB4PUUG · pith_short_16: FFGU3RB4PUUGZR6G · pith_short_8: FFGU3RB4

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/FFGU3RB4PUUGZR6GK6BK5JVZ4E \
  | 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: 294d4dc43c7d286cc7c65782aea6b9e10827f5c7bdb36fccc867bf327c9cee57

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "32c060489e8c12a50ad0e516f2c5685a47ad76aca6989823e91d8509a97a0630",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2019-02-26T14:02:21Z",
    "title_canon_sha256": "092d60393f2a98e0a9c17c3d7b359991d9173760c3ff265f16d20136daee51d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.09938",
    "kind": "arxiv",
    "version": 1
  }
}