Pith Number

pith:2O3Y7WD3

pith:2019:2O3Y7WD3E4FWZN4OQLM2EJL3MW

not attested not anchored not stored refs pending

Recognizing Facial Expressions of Occluded Faces using Convolutional Neural Networks

Mariana-Iuliana Georgescu, Radu Tudor Ionescu

arxiv:1911.04852 v1 · 2019-11-12 · 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{2O3Y7WD3E4FWZN4OQLM2EJL3MW}

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	2026-07-05T00:18:45.661956Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3b78fd87b270b6cb78e82d9a2257b659e3eaa623a21fd656e2dddb606d59df6

Aliases

arxiv: 1911.04852 · arxiv_version: 1911.04852v1 · doi: 10.48550/arxiv.1911.04852 · pith_short_12: 2O3Y7WD3E4FW · pith_short_16: 2O3Y7WD3E4FWZN4O · pith_short_8: 2O3Y7WD3

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/2O3Y7WD3E4FWZN4OQLM2EJL3MW \
  | 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: d3b78fd87b270b6cb78e82d9a2257b659e3eaa623a21fd656e2dddb606d59df6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2cfbbfcb3d485fd1e29ed4424277a08d30d661f2631575b2fbb90fcc4db88a05",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-11-12T13:53:56Z",
    "title_canon_sha256": "961ef5a601bbc0ee7c4bb6a1fbf33e828f0105d8b109150451fc74abd154e2f5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1911.04852",
    "kind": "arxiv",
    "version": 1
  }
}