Pith Number

pith:WDDV53HI

pith:2021:WDDV53HIC4NHA44TRPK6K6JE3P

not attested not anchored not stored refs pending

Data Acquisition for Improving Machine Learning Models

Nick Koudas, Xiaohui Yu, Yifan Li

arxiv:2105.14107 v2 · 2021-05-28 · cs.DB

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WDDV53HIC4NHA44TRPK6K6JE3P}

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.

Cited by

1 paper in Pith

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Receipt and verification

First computed	2026-07-05T02:44:59.550966Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b0c75eece8171a7073938bd5e57924dbda0c94b0271868b66b62a9a7709259e5

Aliases

arxiv: 2105.14107 · arxiv_version: 2105.14107v2 · doi: 10.48550/arxiv.2105.14107 · pith_short_12: WDDV53HIC4NH · pith_short_16: WDDV53HIC4NHA44T · pith_short_8: WDDV53HI

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/WDDV53HIC4NHA44TRPK6K6JE3P \
  | 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: b0c75eece8171a7073938bd5e57924dbda0c94b0271868b66b62a9a7709259e5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "922a6b1b16fd1e648678ef206b2a389c1d6c22f5e71f8e9224b0e7cbaccf3544",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DB",
    "submitted_at": "2021-05-28T21:06:05Z",
    "title_canon_sha256": "e6d2c79b51987fe12d4e406372c7f90a2e1191d9fcfa3c033273ee11188d3392"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.14107",
    "kind": "arxiv",
    "version": 2
  }
}