Pith Number

pith:ID3BEYPP

pith:2015:ID3BEYPPMYYHHSVHUYPUJL6VLD

not attested not anchored not stored refs pending

Unsupervised Feature Analysis with Class Margin Optimization

Feiping Nie, Lina Yao, Quan Z. Sheng, Sen Wang, Xiaojun Chang, Xue Li

arxiv:1506.01330 v1 · 2015-06-03 · 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{ID3BEYPPMYYHHSVHUYPUJL6VLD}

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	2026-05-18T01:58:24.555295Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

40f61261ef663073caa7a61f44afd558e97a03baaf869b8cc0f3cb8eb203a790

Aliases

arxiv: 1506.01330 · arxiv_version: 1506.01330v1 · doi: 10.48550/arxiv.1506.01330 · pith_short_12: ID3BEYPPMYYH · pith_short_16: ID3BEYPPMYYHHSVH · pith_short_8: ID3BEYPP

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/ID3BEYPPMYYHHSVHUYPUJL6VLD \
  | 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: 40f61261ef663073caa7a61f44afd558e97a03baaf869b8cc0f3cb8eb203a790

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "11de24603d3078a829807d4388e1d4e89db143e95b3083bf7fe45cc1c3e33079",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2015-06-03T17:49:52Z",
    "title_canon_sha256": "32362cefb2611fde8728d3d4e259cf96a1087e4c414fdba34b1da95463c1da2c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.01330",
    "kind": "arxiv",
    "version": 1
  }
}