Pith Number

pith:KKWVCRQR

pith:2025:KKWVCRQRPBASIUMRU2BO4L5OYR

not attested not anchored not stored refs pending

Unbiased Collaborative Filtering with Fair Sampling

Dongsheng Li, Hansu Gu, Jiahao Liu, Li Shang, Ning Gu, Peng Zhang, Tun Lu

arxiv:2502.13840 v2 · 2025-02-19 · cs.IR · 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{KKWVCRQRPBASIUMRU2BO4L5OYR}

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	2026-07-05T10:50:47.250436Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

52ad5146117841245191a682ee2faec465ab7ab7ac68fe3d390988ca87b38c2c

Aliases

arxiv: 2502.13840 · arxiv_version: 2502.13840v2 · doi: 10.48550/arxiv.2502.13840 · pith_short_12: KKWVCRQRPBAS · pith_short_16: KKWVCRQRPBASIUMR · pith_short_8: KKWVCRQR

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/KKWVCRQRPBASIUMRU2BO4L5OYR \
  | 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: 52ad5146117841245191a682ee2faec465ab7ab7ac68fe3d390988ca87b38c2c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a893983dd1d05b37c8276771b2be63ac7035ea500eba9278f15bf9b5712b7ffe",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2025-02-19T15:59:49Z",
    "title_canon_sha256": "dd23a2041990624c8b6d725fe4dce6be4eb3b153a6168d6341115cec4d7fd204"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.13840",
    "kind": "arxiv",
    "version": 2
  }
}