Pith Number

pith:FQYZI6E3

pith:2021:FQYZI6E3M5MYEXVU2CIOXNBQQY

not attested not anchored not stored refs pending

Heterogeneous Risk Minimization

Bo Li, Jiashuo Liu, Peng Cui, Zheyan Shen, Zheyuan Hu

arxiv:2105.03818 v3 · 2021-05-09 · 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{FQYZI6E3M5MYEXVU2CIOXNBQQY}

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	2026-07-05T02:50:10.666794Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c3194789b6759825eb4d090ebb43086357878d7352550eb4254b3d149e7c553

Aliases

arxiv: 2105.03818 · arxiv_version: 2105.03818v3 · doi: 10.48550/arxiv.2105.03818 · pith_short_12: FQYZI6E3M5MY · pith_short_16: FQYZI6E3M5MYEXVU · pith_short_8: FQYZI6E3

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/FQYZI6E3M5MYEXVU2CIOXNBQQY \
  | 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: 2c3194789b6759825eb4d090ebb43086357878d7352550eb4254b3d149e7c553

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b8a98c1ed5b0b20926ce6c39e99ae5d90a421b5f69f0c5e7e1a8009d75edff77",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2021-05-09T02:51:36Z",
    "title_canon_sha256": "7daaafeeaa3faa4b576e8a41e7f359dcc7e4fdaa98407cd3d3dec54afcf1e62c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.03818",
    "kind": "arxiv",
    "version": 3
  }
}