Pith Number

pith:VYLCDVEI

pith:2014:VYLCDVEIL7NSTH4GWD2DOJZSAF

not attested not anchored not stored refs pending

HSR: L1/2 Regularized Sparse Representation for Fast Face Recognition using Hierarchical Feature Selection

Amaury Lendasse, Bo Han, Bo He, Mengmeng Ma, Tingting Sun

arxiv:1409.6448 v1 · 2014-09-23 · cs.CV · 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{VYLCDVEIL7NSTH4GWD2DOJZSAF}

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	2026-05-18T01:18:14.993070Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ae1621d4885fdb299f86b0f4372732017a2f598d58a14ba2517d0ef325b3d529

Aliases

arxiv: 1409.6448 · arxiv_version: 1409.6448v1 · doi: 10.48550/arxiv.1409.6448 · pith_short_12: VYLCDVEIL7NS · pith_short_16: VYLCDVEIL7NSTH4G · pith_short_8: VYLCDVEI

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/VYLCDVEIL7NSTH4GWD2DOJZSAF \
  | 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: ae1621d4885fdb299f86b0f4372732017a2f598d58a14ba2517d0ef325b3d529

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "447b5a3e64f5b75432ce42c32a20c8c26753f2b87973de59c8bb994741f4f3b3",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2014-09-23T08:36:05Z",
    "title_canon_sha256": "9f72c91059747418a15ba834168ff8e917c991bce5eb69f37bf4f9a6afadffd7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.6448",
    "kind": "arxiv",
    "version": 1
  }
}