Pith Number

pith:WMSZYRSJ

pith:2020:WMSZYRSJVLOREQDRDZB2QA3MPP

not attested not anchored not stored refs pending

How to Retrain Recommender System? A Sequential Meta-Learning Method

Chenxu Wang, Fuli Feng, Meng Wang, Xiangnan He, Yang Zhang, Yan Li, Yongdong Zhang

arxiv:2005.13258 v1 · 2020-05-27 · 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{WMSZYRSJVLOREQDRDZB2QA3MPP}

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	2026-07-05T02:06:50.250438Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b3259c4649aadd1240711e43a8036c7bdcf6a40dc7c447f95cc7bbe32d4d6931

Aliases

arxiv: 2005.13258 · arxiv_version: 2005.13258v1 · doi: 10.48550/arxiv.2005.13258 · pith_short_12: WMSZYRSJVLOR · pith_short_16: WMSZYRSJVLOREQDR · pith_short_8: WMSZYRSJ

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/WMSZYRSJVLOREQDRDZB2QA3MPP \
  | 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: b3259c4649aadd1240711e43a8036c7bdcf6a40dc7c447f95cc7bbe32d4d6931

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "888973b9e5d3591bb19d2ff6cb4d52e4e6324e3cd9a17c27506cbf251bb8896e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2020-05-27T09:50:46Z",
    "title_canon_sha256": "d9dde1fdd9c842993948516793a016edbdcf177d247815d40cf2a76c8eb16ad6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2005.13258",
    "kind": "arxiv",
    "version": 1
  }
}