Pith Number

pith:HGA4A7YN

pith:2019:HGA4A7YNPBMYXORJAZ2IYWVJRG

not attested not anchored not stored refs pending

Snowball: Iterative Model Evolution and Confident Sample Discovery for Semi-Supervised Learning on Very Small Labeled Datasets

Hao Sun, Jianhe Yuan, Yang Li, Zhihai He, Zhiqun Zhao

arxiv:1909.01542 v1 · 2019-09-04 · cs.CV · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HGA4A7YNPBMYXORJAZ2IYWVJRG}

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	2026-07-05T00:02:17.249691Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3981c07f0d78598bba2906748c5aa9898440dfd0a2302e19f6e50de57d3c8154

Aliases

arxiv: 1909.01542 · arxiv_version: 1909.01542v1 · doi: 10.48550/arxiv.1909.01542 · pith_short_12: HGA4A7YNPBMY · pith_short_16: HGA4A7YNPBMYXORJ · pith_short_8: HGA4A7YN

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/HGA4A7YNPBMYXORJAZ2IYWVJRG \
  | 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: 3981c07f0d78598bba2906748c5aa9898440dfd0a2302e19f6e50de57d3c8154

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c9999f9231f2928d4a27b4eb805bc2649a0938ef08672ea9b2e5b28b8bd72cce",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-09-04T03:41:27Z",
    "title_canon_sha256": "5b59cd26f1228be60af2d67b2d0cf1e1c23680bda80653cea0f0d1528623810c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.01542",
    "kind": "arxiv",
    "version": 1
  }
}