Pith Number

pith:BXZIGK44

pith:2026:BXZIGK44BTUVBVWM6LGFOAFORU

not attested not anchored not stored refs pending

On the Convergent Validity of Offline Evaluation Designs for Recommender Systems

Michael D. Ekstrand, Samira Vaez Barenji, Sushobhan Parajuli

arxiv:2607.25097 v1 · 2026-07-27 · cs.IR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BXZIGK44BTUVBVWM6LGFOAFORU}

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	2026-07-29T00:25:02.554113Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0df2832b9c0ce950d6ccf2cc5700ae8d1cdbe9a00540b8d1442de72dbd5a2570

Aliases

arxiv: 2607.25097 · arxiv_version: 2607.25097v1 · doi: 10.48550/arxiv.2607.25097 · pith_short_12: BXZIGK44BTUV · pith_short_16: BXZIGK44BTUVBVWM · pith_short_8: BXZIGK44

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/BXZIGK44BTUVBVWM6LGFOAFORU \
  | 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: 0df2832b9c0ce950d6ccf2cc5700ae8d1cdbe9a00540b8d1442de72dbd5a2570

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4ac4c701b065b294cb13d94611663697ea79f576d575e29021e63c2aa9562bd4",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2026-07-27T21:54:19Z",
    "title_canon_sha256": "2aa2e91fcb763bd57a3226f094e78c83e0556d4360ef139823c2e74565f0da6c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.25097",
    "kind": "arxiv",
    "version": 1
  }
}