Pith Number

pith:STSULHPM

pith:2021:STSULHPMRT46JA5XHAWOEVJK7O

not attested not anchored not stored refs pending

Do Proportionate Algorithms Exploit Sparsity?

Gabriel S. Chaves, Markus V. S. Lima, Paulo S. R. Diniz, Tadeu N. Ferreira

arxiv:2108.06846 v1 · 2021-08-16 · 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{STSULHPMRT46JA5XHAWOEVJK7O}

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	2026-07-05T03:05:58.391235Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

94e5459dec8cf9e483b7382ce2552afb8332b4e3c8f7291209a147dfed803b03

Aliases

arxiv: 2108.06846 · arxiv_version: 2108.06846v1 · doi: 10.48550/arxiv.2108.06846 · pith_short_12: STSULHPMRT46 · pith_short_16: STSULHPMRT46JA5X · pith_short_8: STSULHPM

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/STSULHPMRT46JA5XHAWOEVJK7O \
  | 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: 94e5459dec8cf9e483b7382ce2552afb8332b4e3c8f7291209a147dfed803b03

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d69a9ef319eaacd8d961dfa15950d2f3b48078b8354eb90f38cdcb89c9d03d07",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2021-08-16T00:56:00Z",
    "title_canon_sha256": "09dde3f5b84061b6eae5bc9938f84ee4c4f514d9bc8a4aa20e7f7c2648780a20"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.06846",
    "kind": "arxiv",
    "version": 1
  }
}