Pith Number

pith:ZALI4Y6Q

pith:2015:ZALI4Y6QKTSOWDZ5IPM4MDTFRO

not attested not anchored not stored refs pending

Linear Spatial Pyramid Matching Using Non-convex and non-negative Sparse Coding for Image Classification

Chengqiang Bao, Liangtian He, Yilun Wang

arxiv:1504.06897 v1 · 2015-04-27 · 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{ZALI4Y6QKTSOWDZ5IPM4MDTFRO}

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	2026-05-18T02:17:44.128214Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c8168e63d054e4eb0f3d43d9c60e658bafd4c6a9b778250991e8905674534f6a

Aliases

arxiv: 1504.06897 · arxiv_version: 1504.06897v1 · doi: 10.48550/arxiv.1504.06897 · pith_short_12: ZALI4Y6QKTSO · pith_short_16: ZALI4Y6QKTSOWDZ5 · pith_short_8: ZALI4Y6Q

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/ZALI4Y6QKTSOWDZ5IPM4MDTFRO \
  | 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: c8168e63d054e4eb0f3d43d9c60e658bafd4c6a9b778250991e8905674534f6a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bc70a73dbb7b0afc521924d1fa7830cf94f1379295588e7ab703803f2291e294",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2015-04-27T00:46:54Z",
    "title_canon_sha256": "cb1eab1ef3b26aec42167fb332323ac54654ac328dcde08a02fea87cc1f5efd8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.06897",
    "kind": "arxiv",
    "version": 1
  }
}