Pith Number

pith:HCOWUEI4

pith:2025:HCOWUEI4LZQF2QLAB7Z3N74UJK

not attested not anchored not stored refs pending

Meta-Instance Selection. Instance Selection as a Classification Problem with Meta-Features

Marcin Blachnik, Piotr Ciepli\'nski

arxiv:2501.11526 v1 · 2025-01-20 · 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{HCOWUEI4LZQF2QLAB7Z3N74UJK}

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	2026-07-05T10:03:09.689717Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

389d6a111c5e605d41600ff3b6ff944aa0fe5e4f9deb736d76dffc05f59fe16a

Aliases

arxiv: 2501.11526 · arxiv_version: 2501.11526v1 · doi: 10.48550/arxiv.2501.11526 · pith_short_12: HCOWUEI4LZQF · pith_short_16: HCOWUEI4LZQF2QLA · pith_short_8: HCOWUEI4

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/HCOWUEI4LZQF2QLAB7Z3N74UJK \
  | 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: 389d6a111c5e605d41600ff3b6ff944aa0fe5e4f9deb736d76dffc05f59fe16a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2f7aa23fbef523e25150f5af21c55b4db737dd04e3ed195c7f0737f3dfeefd68",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2025-01-20T15:08:19Z",
    "title_canon_sha256": "d48c7f72e280c90f770cc0946e992ea312b99e3d8663c19c5baea5f7b0139be5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2501.11526",
    "kind": "arxiv",
    "version": 1
  }
}