Pith Number

pith:DCERDYR7

pith:2007:DCERDYR7MHBO7QTBWWK4Y26RQX

not attested not anchored not stored refs pending

Slope One Predictors for Online Rating-Based Collaborative Filtering

Anna Maclachlan, Daniel Lemire

arxiv:cs/0702144 v2 · 2007-02-24 · cs.DB · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DCERDYR7MHBO7QTBWWK4Y26RQX}

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	2026-05-18T00:03:26.629664Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

188911e23f61c2efc261b595cc6bd185da0a785d998e891eb95f727a861f3ffc

Aliases

arxiv: cs/0702144 · arxiv_version: cs/0702144v2 · doi: 10.48550/arxiv.cs/0702144 · pith_short_12: DCERDYR7MHBO · pith_short_16: DCERDYR7MHBO7QTB · pith_short_8: DCERDYR7

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/DCERDYR7MHBO7QTBWWK4Y26RQX \
  | 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: 188911e23f61c2efc261b595cc6bd185da0a785d998e891eb95f727a861f3ffc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "40b17e50d0f349aed8c18f8558720a4b6679199367c42afeea0f55d715ddc0ac",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DB",
    "submitted_at": "2007-02-24T03:16:27Z",
    "title_canon_sha256": "cf661ef5453e4bdafe511b661d5032cffc3d14efe31915bd83bf5434de2cf7b0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/0702144",
    "kind": "arxiv",
    "version": 2
  }
}