Pith Number

pith:5UDW4A6S

pith:2020:5UDW4A6S4SYR3LSZA7VCTKAC4G

not attested not anchored not stored refs pending

MetaSelector: Meta-Learning for Recommendation with User-Level Adaptive Model Selection

Fei Chen, Jiashi Feng, Mi Luo, Pengxiang Cheng, Xiuqiang He, Zhenguo Li, Zhenhua Dong

arxiv:2001.10378 v3 · 2020-01-22 · cs.IR · cs.LG · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5UDW4A6S4SYR3LSZA7VCTKAC4G}

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	2026-07-05T01:00:16.020009Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ed076e03d2e4b11dae5907ea29a802e191af88dca8511bd0ac3902a9abc1ba42

Aliases

arxiv: 2001.10378 · arxiv_version: 2001.10378v3 · doi: 10.48550/arxiv.2001.10378 · pith_short_12: 5UDW4A6S4SYR · pith_short_16: 5UDW4A6S4SYR3LSZ · pith_short_8: 5UDW4A6S

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/5UDW4A6S4SYR3LSZA7VCTKAC4G \
  | 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: ed076e03d2e4b11dae5907ea29a802e191af88dca8511bd0ac3902a9abc1ba42

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bddb2f3e944707dafb65194cb34ecda2a87ff9c23b906daef8515303396111c1",
    "cross_cats_sorted": [
      "cs.LG",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2020-01-22T16:05:01Z",
    "title_canon_sha256": "503fdfa998d26e99eb59bff8c426fac2bd8814d53d998a14df74993ae27ed464"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.10378",
    "kind": "arxiv",
    "version": 3
  }
}