Pith Number

pith:VQRRIDUC

pith:2019:VQRRIDUCWNGVKWHS5YXEX6HGB7

not attested not anchored not stored refs pending

A Tunable Loss Function for Binary Classification

Lalitha Sankar, Mario Diaz, Peter Kairouz, Tyler Sypherd

arxiv:1902.04639 v2 · 2019-02-12 · cs.LG · cs.IT · math.IT · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VQRRIDUCWNGVKWHS5YXEX6HGB7}

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	2026-05-17T23:50:50.324477Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac23140e82b34d5558f2ee2e4bf8e60fe660c4e1587af8d7aa61f1e93d7074a5

Aliases

arxiv: 1902.04639 · arxiv_version: 1902.04639v2 · doi: 10.48550/arxiv.1902.04639 · pith_short_12: VQRRIDUCWNGV · pith_short_16: VQRRIDUCWNGVKWHS · pith_short_8: VQRRIDUC

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/VQRRIDUCWNGVKWHS5YXEX6HGB7 \
  | 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: ac23140e82b34d5558f2ee2e4bf8e60fe660c4e1587af8d7aa61f1e93d7074a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9d6f1c9e7d7e1e59bc4d0fde065a7167a46fb60fd751164799462ddd09cc976d",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2019-02-12T21:15:33Z",
    "title_canon_sha256": "a2492fd29565a6f4e82e4a4e3d17f224b083dd949d0707a945ad56cc198e9374"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.04639",
    "kind": "arxiv",
    "version": 2
  }
}