Pith Number

pith:3NYE4SPR

pith:2010:3NYE4SPRB26GB7Y5A4MZSMYCY4

not attested not anchored not stored refs pending

Time-aware Collaborative Filtering with the Piecewise Decay Function

Chi Ho Yeung, Cihang Jin, Pei Wu, Weiping Liu, Yi-Cheng Zhang

arxiv:1010.3988 v1 · 2010-10-19 · cs.IR · physics.soc-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3NYE4SPRB26GB7Y5A4MZSMYCY4}

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	2026-05-18T04:39:07.099341Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

db704e49f10ebc60ff1d0719993302c70fe0c40958bc4372c76ba6f2c5c9a3ed

Aliases

arxiv: 1010.3988 · arxiv_version: 1010.3988v1 · doi: 10.48550/arxiv.1010.3988 · pith_short_12: 3NYE4SPRB26G · pith_short_16: 3NYE4SPRB26GB7Y5 · pith_short_8: 3NYE4SPR

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/3NYE4SPRB26GB7Y5A4MZSMYCY4 \
  | 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: db704e49f10ebc60ff1d0719993302c70fe0c40958bc4372c76ba6f2c5c9a3ed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dfaa197ffacf04848a90cfced3a5e0995ac08590010623bbe11b4320d313344a",
    "cross_cats_sorted": [
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2010-10-19T17:32:26Z",
    "title_canon_sha256": "5a6be087ccd0161d6945526153989aa169fba0737495d2382268d402908f8f2e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1010.3988",
    "kind": "arxiv",
    "version": 1
  }
}