Pith Number

pith:HGNDFVR6

pith:2020:HGNDFVR6DQ3NXUCESCPFTOYFSB

not attested not anchored not stored refs pending

Learning Optimal Classification Trees: Strong Max-Flow Formulations

Andres Gomez, Phebe Vayanos, Sina Aghaei

arxiv:2002.09142 v2 · 2020-02-21 · stat.ML · cs.LG · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HGNDFVR6DQ3NXUCESCPFTOYFSB}

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	2026-07-05T01:02:29.615768Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

399a32d63e1c36dbd044909e59bb059079c6a5d6c3499651772f0e0ebea0c14e

Aliases

arxiv: 2002.09142 · arxiv_version: 2002.09142v2 · doi: 10.48550/arxiv.2002.09142 · pith_short_12: HGNDFVR6DQ3N · pith_short_16: HGNDFVR6DQ3NXUCE · pith_short_8: HGNDFVR6

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/HGNDFVR6DQ3NXUCESCPFTOYFSB \
  | 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: 399a32d63e1c36dbd044909e59bb059079c6a5d6c3499651772f0e0ebea0c14e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e05374f51095aa7e2067e8383dd4b8bb5b43192737fdc219c2c3258866433978",
    "cross_cats_sorted": [
      "cs.LG",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2020-02-21T05:58:17Z",
    "title_canon_sha256": "55821d59085122892eebb1ea50723f0e064f89f636ae44a1c667090c7c135c2c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.09142",
    "kind": "arxiv",
    "version": 2
  }
}