Pith Number

pith:7EE7RREK

pith:2019:7EE7RREKR5V5TGPNVYAUSQMNPP

not attested not anchored not stored refs pending

Personalised novel and explainable matrix factorisation

Ludovik Coba, Markus Zanker, Panagiotis Symeonidis

arxiv:1907.11000 v1 · 2019-07-25 · cs.IR · cs.HC · 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{7EE7RREKR5V5TGPNVYAUSQMNPP}

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	2026-05-17T23:39:33.782798Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f909f8c48a8f6bd999edae0149418d7beb14ee69073ed93a76076982548e3d78

Aliases

arxiv: 1907.11000 · arxiv_version: 1907.11000v1 · doi: 10.48550/arxiv.1907.11000 · pith_short_12: 7EE7RREKR5V5 · pith_short_16: 7EE7RREKR5V5TGPN · pith_short_8: 7EE7RREK

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/7EE7RREKR5V5TGPNVYAUSQMNPP \
  | 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: f909f8c48a8f6bd999edae0149418d7beb14ee69073ed93a76076982548e3d78

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "94d907d8556b22999d0337b7bac809933e2c9a72df27650615a48b588bf29c39",
    "cross_cats_sorted": [
      "cs.HC",
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2019-07-25T12:21:19Z",
    "title_canon_sha256": "23494dda61849f09d095b76a4d4673c2fa8f3d6558b3bbcdf9436cf12c696a13"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.11000",
    "kind": "arxiv",
    "version": 1
  }
}