Pith Number

pith:6RB75U5C

pith:2015:6RB75U5CUEUJAYM2F6IMBS6MEB

not attested not anchored not stored refs pending

Reducing offline evaluation bias of collaborative filtering algorithms

Arnaud De Myttenaere (SAMM, B\'en\'edicte Le Grand (CRI), Boris Golden (Viadeo), Fabrice Rossi (SAMM), Viadeo)

arxiv:1506.04135 v1 · 2015-06-12 · cs.IR · cs.LG · 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{6RB75U5CUEUJAYM2F6IMBS6MEB}

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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	2026-05-18T01:51:18.205613Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f443fed3a2a12890619a2f90c0cbcc20449d0beba028643f01809beba326bddf

Aliases

arxiv: 1506.04135 · arxiv_version: 1506.04135v1 · doi: 10.48550/arxiv.1506.04135 · pith_short_12: 6RB75U5CUEUJ · pith_short_16: 6RB75U5CUEUJAYM2 · pith_short_8: 6RB75U5C

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/6RB75U5CUEUJAYM2F6IMBS6MEB \
  | 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: f443fed3a2a12890619a2f90c0cbcc20449d0beba028643f01809beba326bddf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "58e5fc9fce70543c0fcb5c0c6f935c2479c0097a22a9a10deac21873c3379ae5",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2015-06-12T19:57:27Z",
    "title_canon_sha256": "7858d8d92bef24d258ad8e38301054292433cba481c6ae9df32a34b5850ed341"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.04135",
    "kind": "arxiv",
    "version": 1
  }
}