Pith Number

pith:UUQ4QR6V

pith:2010:UUQ4QR6VXKTTKTMEC2HXDO6K6L

not attested not anchored not stored refs pending

Facial Expression Representation and Recognition Using 2DHLDA, Gabor Wavelets, and Ensemble Learning

Mahmoud Khademi, Mehran Safayani, Mohammad H. Kiapour, Mohammad T. Manzuri, M. Shojaei

arxiv:1004.0378 v7 · 2010-04-02 · 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{UUQ4QR6VXKTTKTMEC2HXDO6K6L}

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	2026-05-18T03:50:35.760851Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a521c847d5baa7354d84168f71bbcaf2d48a6e06167b17de7b356be5d53564ab

Aliases

arxiv: 1004.0378 · arxiv_version: 1004.0378v7 · doi: 10.48550/arxiv.1004.0378 · pith_short_12: UUQ4QR6VXKTT · pith_short_16: UUQ4QR6VXKTTKTME · pith_short_8: UUQ4QR6V

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/UUQ4QR6VXKTTKTMEC2HXDO6K6L \
  | 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: a521c847d5baa7354d84168f71bbcaf2d48a6e06167b17de7b356be5d53564ab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6c8b88c1c2cf9e0e38e7f85f96ccdd0e3e55968599850bd4b6e3e424173fec3e",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2010-04-02T19:26:47Z",
    "title_canon_sha256": "5da113d475e4d59bd813363b86de05dc81a24391aac0eb6d07051304b88fe61e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.0378",
    "kind": "arxiv",
    "version": 7
  }
}