Pith Number

pith:7B45QPUB

pith:2020:7B45QPUBDAKP62ZV66Y37AIBG6

not attested not anchored not stored refs pending

Improving Positive Unlabeled Learning: Practical AUL Estimation and New Training Method for Extremely Imbalanced Data Sets

Dan Li, Liwei Jiang, Qisheng Wang, Shuai Wang, Songtao Wang

arxiv:2004.09820 v1 · 2020-04-21 · 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{7B45QPUBDAKP62ZV66Y37AIBG6}

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	2026-07-05T00:56:53.949291Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f879d83e811814ff6b35f7b1bf810137a3c59559bdbfb55e586b022da23d702f

Aliases

arxiv: 2004.09820 · arxiv_version: 2004.09820v1 · doi: 10.48550/arxiv.2004.09820 · pith_short_12: 7B45QPUBDAKP · pith_short_16: 7B45QPUBDAKP62ZV · pith_short_8: 7B45QPUB

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/7B45QPUBDAKP62ZV66Y37AIBG6 \
  | 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: f879d83e811814ff6b35f7b1bf810137a3c59559bdbfb55e586b022da23d702f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "72f441d6fd6e6dd6dae8324e49735021502eb272cbdf4b90908f40d870342383",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2020-04-21T08:32:57Z",
    "title_canon_sha256": "c5518659fe3ea8c7a0e070c36660f1898e5aee27c83085600a36250f2437ace5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.09820",
    "kind": "arxiv",
    "version": 1
  }
}