Pith Number

pith:IIJRUUMV

pith:2021:IIJRUUMV4QFEMALETE6AMAFGS2

not attested not anchored not stored refs pending

Neural Feature Selection for Learning to Rank

Alberto Purpura, Gian Antonio Susto, Gianmaria Silvello, Karolina Buchner

arxiv:2102.11345 v1 · 2021-02-22 · cs.IR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IIJRUUMV4QFEMALETE6AMAFGS2}

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	2026-07-05T02:17:10.785853Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

42131a5195e40a460164993c0600a696bd933d06600ca60e5f8d76957320f549

Aliases

arxiv: 2102.11345 · arxiv_version: 2102.11345v1 · doi: 10.48550/arxiv.2102.11345 · pith_short_12: IIJRUUMV4QFE · pith_short_16: IIJRUUMV4QFEMALE · pith_short_8: IIJRUUMV

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/IIJRUUMV4QFEMALETE6AMAFGS2 \
  | 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: 42131a5195e40a460164993c0600a696bd933d06600ca60e5f8d76957320f549

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "80b492fe7635b2e306944e6d5a4911376d031aac7d9009404b326e9b8504c40a",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2021-02-22T20:38:41Z",
    "title_canon_sha256": "0ff2d6cc8866341ba596ab640cf093140c672d0ffac4b59ddcff73efb5b780b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.11345",
    "kind": "arxiv",
    "version": 1
  }
}