Pith Number

pith:WPQSNDSX

pith:2018:WPQSNDSX7INYMWKBQHLNWH3VSF

not attested not anchored not stored refs pending

A Missing Information Loss function for implicit feedback datasets

Juan Ar\'evalo, Juan Ram\'on Duque, Marco Creatura

arxiv:1805.00121 v2 · 2018-04-30 · cs.LG · cs.AI · cs.IR · 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{WPQSNDSX7INYMWKBQHLNWH3VSF}

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	2026-05-18T00:08:00.371867Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b3e1268e57fa1b86594181d6db1f75915d0c957844295e7d8523f99cb624f169

Aliases

arxiv: 1805.00121 · arxiv_version: 1805.00121v2 · doi: 10.48550/arxiv.1805.00121 · pith_short_12: WPQSNDSX7INY · pith_short_16: WPQSNDSX7INYMWKB · pith_short_8: WPQSNDSX

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/WPQSNDSX7INYMWKBQHLNWH3VSF \
  | 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: b3e1268e57fa1b86594181d6db1f75915d0c957844295e7d8523f99cb624f169

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f2f26e9f74abb9b79ff19dff16823be34078de7098d3745b95783f4ce566258f",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.IR",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2018-04-30T22:38:05Z",
    "title_canon_sha256": "c0b1f3f7d043746deb5028e82f275e80cbb897ee42ad3e7b56468b38aa05a67a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.00121",
    "kind": "arxiv",
    "version": 2
  }
}