Pith Number

pith:PKDQNFCL

pith:2011:PKDQNFCL5CEYSOFLRZPUSM36YF

not attested not anchored not stored refs pending

Facial Expression Classification Based on Multi Artificial Neural Network and Two Dimensional Principal Component Analysis

Hai Tran, Phat Tat, Thai Le

arxiv:1107.3195 v1 · 2011-07-16 · cs.CV

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PKDQNFCL5CEYSOFLRZPUSM36YF}

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	2026-05-18T04:18:03.693714Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7a8706944be8898938ab8e5f49337ec16c129d2e67440acab0c631dc5cc31b7b

Aliases

arxiv: 1107.3195 · arxiv_version: 1107.3195v1 · doi: 10.48550/arxiv.1107.3195 · pith_short_12: PKDQNFCL5CEY · pith_short_16: PKDQNFCL5CEYSOFL · pith_short_8: PKDQNFCL

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/PKDQNFCL5CEYSOFLRZPUSM36YF \
  | 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: 7a8706944be8898938ab8e5f49337ec16c129d2e67440acab0c631dc5cc31b7b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "13ed3af3abf9bb2bfa39b66790a544cc60b0e1e603ac0f9039a55c36ffe9f361",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2011-07-16T03:15:40Z",
    "title_canon_sha256": "14a42255a3fe768fae9b9b4bdd03dd64471148a232aff911a1c734c433c86486"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.3195",
    "kind": "arxiv",
    "version": 1
  }
}