Pith Number

pith:PBQT2E6S

pith:2019:PBQT2E6SM2NF6Y266A6I7T6EHA

not attested not anchored not stored refs pending

Representation Learning for Recommender Systems with Application to the Scientific Literature

Robin Brochier

arxiv:1902.11058 v1 · 2019-02-28 · cs.CL · cs.DL · cs.IR · cs.SI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PBQT2E6SM2NF6Y266A6I7T6EHA}

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	2026-05-17T23:52:25.893070Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78613d13d2669a5f635ef03c8fcfc43804ee9c1c9bcd7a09fdf236e644e622ae

Aliases

arxiv: 1902.11058 · arxiv_version: 1902.11058v1 · doi: 10.48550/arxiv.1902.11058 · pith_short_12: PBQT2E6SM2NF · pith_short_16: PBQT2E6SM2NF6Y26 · pith_short_8: PBQT2E6S

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/PBQT2E6SM2NF6Y266A6I7T6EHA \
  | 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: 78613d13d2669a5f635ef03c8fcfc43804ee9c1c9bcd7a09fdf236e644e622ae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d85bbc0160bc1a513108eb5958a423c7f8ae0a66db3ecf907f2881935a1d649f",
    "cross_cats_sorted": [
      "cs.DL",
      "cs.IR",
      "cs.SI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2019-02-28T12:53:38Z",
    "title_canon_sha256": "22b9767c03833dab44c5d328f658ff9f31667fa0eea04c763e71217f6c1fd63b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.11058",
    "kind": "arxiv",
    "version": 1
  }
}