Pith Number

pith:7FIAMNYA

pith:2020:7FIAMNYALH6MWFJP7MGGLIXVAZ

not attested not anchored not stored refs pending

Wrapper Feature Selection Algorithm for the Optimization of an Indicator System of Patent Value Assessment

Chiyu Zhang, Yihui Qiu

arxiv:2001.08371 v1 · 2020-01-21 · 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{7FIAMNYALH6MWFJP7MGGLIXVAZ}

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	2026-07-05T00:35:12.511358Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f95006370059fccb152ffb0c65a2f5067ad6efc53c60d237c58cea9c9fba44b3

Aliases

arxiv: 2001.08371 · arxiv_version: 2001.08371v1 · doi: 10.48550/arxiv.2001.08371 · pith_short_12: 7FIAMNYALH6M · pith_short_16: 7FIAMNYALH6MWFJP · pith_short_8: 7FIAMNYA

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/7FIAMNYALH6MWFJP7MGGLIXVAZ \
  | 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: f95006370059fccb152ffb0c65a2f5067ad6efc53c60d237c58cea9c9fba44b3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "022cecf378597ed40028818c55ec33b131c9740e67d26639363ca665bfa5f061",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2020-01-21T06:04:42Z",
    "title_canon_sha256": "adf0c2c11bb1de908d0299653181f255b54b0a9fde4cc3fc42b109fc1295cc45"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.08371",
    "kind": "arxiv",
    "version": 1
  }
}