Pith Number

pith:PWCFLKMB

pith:2015:PWCFLKMBYWDOAUGNTY74C6IHJS

not attested not anchored not stored refs pending

Sparse learning of maximum likelihood model for optimization of complex loss function

Ning Zhang, Prathamesh Chandrasekar

arxiv:1511.05743 v1 · 2015-11-18 · 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{PWCFLKMBYWDOAUGNTY74C6IHJS}

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	2026-05-18T01:26:32.868694Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d8455a981c586e050cd9e3fc179074c89b7dc8b092918b42b3d89a727ba740d

Aliases

arxiv: 1511.05743 · arxiv_version: 1511.05743v1 · doi: 10.48550/arxiv.1511.05743 · pith_short_12: PWCFLKMBYWDO · pith_short_16: PWCFLKMBYWDOAUGN · pith_short_8: PWCFLKMB

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/PWCFLKMBYWDOAUGNTY74C6IHJS \
  | 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: 7d8455a981c586e050cd9e3fc179074c89b7dc8b092918b42b3d89a727ba740d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "302d505dc7e4edeebc946d36540d7783f7940aed1cc0c0d1d4bf728c4850f863",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2015-11-18T11:40:02Z",
    "title_canon_sha256": "262d4a244c9914995fc588dbe8529cb14b02c0d418805fea5f0b17b6f7803894"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.05743",
    "kind": "arxiv",
    "version": 1
  }
}