Pith Number

pith:GQJ2X4VT

pith:2018:GQJ2X4VTEQVEFYSH26NBAZA4KL

not attested not anchored not stored refs pending

A Deep Learning Approach for Multi-View Engagement Estimation of Children in a Child-Robot Joint Attention task

Costas S. Tzafestas, Georgia Chalvatzaki, Jack Hadfield, Mehdi Khamassi, Petros Koutras, Petros Maragos

arxiv:1812.00253 v1 · 2018-12-01 · cs.RO · 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{GQJ2X4VTEQVEFYSH26NBAZA4KL}

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	2026-05-17T23:59:21.750677Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3413abf2b3242a42e247d79a10641c52e22e1b0d79ec674fa5c5e4f12ed3b0ef

Aliases

arxiv: 1812.00253 · arxiv_version: 1812.00253v1 · doi: 10.48550/arxiv.1812.00253 · pith_short_12: GQJ2X4VTEQVE · pith_short_16: GQJ2X4VTEQVEFYSH · pith_short_8: GQJ2X4VT

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/GQJ2X4VTEQVEFYSH26NBAZA4KL \
  | 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: 3413abf2b3242a42e247d79a10641c52e22e1b0d79ec674fa5c5e4f12ed3b0ef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b9355528b88e82d096b13a87db9849d74f5093ce26c534d03a928742f604dd68",
    "cross_cats_sorted": [
      "cs.CV",
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.RO",
    "submitted_at": "2018-12-01T19:51:16Z",
    "title_canon_sha256": "88b78297a078e2b4f77379f93dd482599db7ecb65aa9304cedd495f39af1e570"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.00253",
    "kind": "arxiv",
    "version": 1
  }
}