Pith Number

pith:NXRK7YFT

pith:2015:NXRK7YFTVNUUHJJAPKJAMGQMHI

not attested not anchored not stored refs pending

Supervised Hierarchical Classification for Student Answer Scoring

I\~nigo Lopez-Gazpio, Itziar Aldabe, Montse Maritxalar, Oier Lopez de Lacalle

arxiv:1507.03462 v1 · 2015-07-13 · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NXRK7YFTVNUUHJJAPKJAMGQMHI}

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	2026-05-18T01:36:58.764536Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6de2afe0b3ab6943a5207a92061a0c3a02a0eadb34cb413c68192fb23895105b

Aliases

arxiv: 1507.03462 · arxiv_version: 1507.03462v1 · doi: 10.48550/arxiv.1507.03462 · pith_short_12: NXRK7YFTVNUU · pith_short_16: NXRK7YFTVNUUHJJA · pith_short_8: NXRK7YFT

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/NXRK7YFTVNUUHJJAPKJAMGQMHI \
  | 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: 6de2afe0b3ab6943a5207a92061a0c3a02a0eadb34cb413c68192fb23895105b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dd12575ba941d37eff4001936a3bf9c6e06796d169a66748881be9b19da53cfc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2015-07-13T14:00:22Z",
    "title_canon_sha256": "039fd7d47a4701313b5a04d978605a802ab827c989d751758bcff563214295d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.03462",
    "kind": "arxiv",
    "version": 1
  }
}