Pith Number

pith:IPFROBV4

pith:2015:IPFROBV4VHFN7TBWCJKVCGYO5M

not attested not anchored not stored refs pending

Effective Discriminative Feature Selection with Non-trivial Solutions

Chenping Hou, Dongyun Yi, Feiping Nie, Hong Tao, Yuanyuan Jiao

arxiv:1504.05408 v1 · 2015-04-21 · 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{IPFROBV4VHFN7TBWCJKVCGYO5M}

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	2026-05-18T02:18:14.349134Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

43cb1706bca9cadfcc361255511b0eeb21634a2bd7ef6288ca94e54f7500a555

Aliases

arxiv: 1504.05408 · arxiv_version: 1504.05408v1 · doi: 10.48550/arxiv.1504.05408 · pith_short_12: IPFROBV4VHFN · pith_short_16: IPFROBV4VHFN7TBW · pith_short_8: IPFROBV4

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/IPFROBV4VHFN7TBWCJKVCGYO5M \
  | 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: 43cb1706bca9cadfcc361255511b0eeb21634a2bd7ef6288ca94e54f7500a555

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a1f5a6021e398485444551b880176063fdfa104a01f45d8fef92d657ed1b7e2b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2015-04-21T12:40:32Z",
    "title_canon_sha256": "269f7cef5a465a50453e43771e7adf65379273e11e0a2de5347e7cadf5c90002"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.05408",
    "kind": "arxiv",
    "version": 1
  }
}