Pith Number

pith:KFOQLU5F

pith:2020:KFOQLU5FXOWDFUQW67TO5WZGVJ

not attested not anchored not stored refs pending

Test Set Optimization by Machine Learning Algorithms

Kaiming Fu, Yulu Jin, Zhousheng Chen

arxiv:2010.15240 v1 · 2020-10-28 · 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{KFOQLU5FXOWDFUQW67TO5WZGVJ}

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	2026-07-05T01:47:35.034059Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

515d05d3a5bbac32d216f7e6eedb26aa7fc9d948d258b89ecbe145a998d1bd14

Aliases

arxiv: 2010.15240 · arxiv_version: 2010.15240v1 · doi: 10.48550/arxiv.2010.15240 · pith_short_12: KFOQLU5FXOWD · pith_short_16: KFOQLU5FXOWDFUQW · pith_short_8: KFOQLU5F

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/KFOQLU5FXOWDFUQW67TO5WZGVJ \
  | 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: 515d05d3a5bbac32d216f7e6eedb26aa7fc9d948d258b89ecbe145a998d1bd14

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f8ce0487cb1a85d42626e71ad8d5da4c5fee6432a641e6ae88f93a7788f50ff9",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2020-10-28T21:24:06Z",
    "title_canon_sha256": "b3b4cbd5a56f79128cf8735d2989e0095645153e81f3988695c13aed6409757a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2010.15240",
    "kind": "arxiv",
    "version": 1
  }
}