Pith Number

pith:UJQORM4G

pith:2016:UJQORM4GSJHPO2IM62JBCABUNK

not attested not anchored not stored refs pending

Empirical study of PROXTONE and PROXTONE$^+$ for Fast Learning of Large Scale Sparse Models

Rujie Liu, Ziqiang Shi

arxiv:1604.05024 v1 · 2016-04-18 · cs.LG · cs.AI

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UJQORM4GSJHPO2IM62JBCABUNK}

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	2026-05-18T01:16:56.002800Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a260e8b386924ef7690cf6921100346a964d2abf548f21538c6ba52a8474a17b

Aliases

arxiv: 1604.05024 · arxiv_version: 1604.05024v1 · doi: 10.48550/arxiv.1604.05024 · pith_short_12: UJQORM4GSJHP · pith_short_16: UJQORM4GSJHPO2IM · pith_short_8: UJQORM4G

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/UJQORM4GSJHPO2IM62JBCABUNK \
  | 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: a260e8b386924ef7690cf6921100346a964d2abf548f21538c6ba52a8474a17b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e84ba7691a9dc5e87c94c2ddc431c81084a12a06671354e2050af8743da75af",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2016-04-18T08:01:02Z",
    "title_canon_sha256": "94582e8c0f3af79daefc9d04fec337eeea2fb950b714d5e96526952d53ef5330"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.05024",
    "kind": "arxiv",
    "version": 1
  }
}