Pith Number

pith:55EYPTYZ

pith:2016:55EYPTYZCTOEKC5IHMVSU42FHS

not attested not anchored not stored refs pending

A Cross-Entropy-based Method to Perform Information-based Feature Selection

Alessandro Rozza, Mirco Nanni, Pietro Cassara

arxiv:1607.07186 v2 · 2016-07-25 · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{55EYPTYZCTOEKC5IHMVSU42FHS}

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	2026-05-18T00:44:09.504953Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef4987cf1914dc450ba83b2b2a73453cbe14a1202684fe376c60743023aa8ed3

Aliases

arxiv: 1607.07186 · arxiv_version: 1607.07186v2 · doi: 10.48550/arxiv.1607.07186 · pith_short_12: 55EYPTYZCTOE · pith_short_16: 55EYPTYZCTOEKC5I · pith_short_8: 55EYPTYZ

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/55EYPTYZCTOEKC5IHMVSU42FHS \
  | 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: ef4987cf1914dc450ba83b2b2a73453cbe14a1202684fe376c60743023aa8ed3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "797888adf6a496a1fca0e1ec2179c6000a04d45bc50246ffc9702e8ededb7f22",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2016-07-25T09:25:25Z",
    "title_canon_sha256": "7151baae6535128afd5aeac0a46b144cf193991484ff5ee5865430b09da32ddb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1607.07186",
    "kind": "arxiv",
    "version": 2
  }
}