Pith Number

pith:YJQPKQYC

pith:2020:YJQPKQYCKBOFFAGSVF6O2ESQW2

not attested not anchored not stored refs pending

A Critical Study on Data Leakage in Recommender System Offline Evaluation

Aixin Sun, Chenliang Li, Jie Zhang, Yitong Ji

arxiv:2010.11060 v4 · 2020-10-21 · 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{YJQPKQYCKBOFFAGSVF6O2ESQW2}

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	2026-07-05T06:37:26.740301Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c260f54302505c5280d2a97ced1250b6b3bb1ac888c2400ae0bbaf7bfce1fc8e

Aliases

arxiv: 2010.11060 · arxiv_version: 2010.11060v4 · doi: 10.48550/arxiv.2010.11060 · pith_short_12: YJQPKQYCKBOF · pith_short_16: YJQPKQYCKBOFFAGS · pith_short_8: YJQPKQYC

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/YJQPKQYCKBOFFAGSVF6O2ESQW2 \
  | 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: c260f54302505c5280d2a97ced1250b6b3bb1ac888c2400ae0bbaf7bfce1fc8e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a3f1116f97a8a79fe272566ad5e21382f9c805e608dae9271487893748edc64",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2020-10-21T15:09:20Z",
    "title_canon_sha256": "60b67510e11873de1e23c95e4a6895dfa4814dfa66eff2770a643e8588778af2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2010.11060",
    "kind": "arxiv",
    "version": 4
  }
}