Pith Number

pith:7KD3TMU6

pith:2013:7KD3TMU6HOQ4Z6BIT5AXMJKQ45

not attested not anchored not stored refs pending

Tuned Models of Peer Assessment in MOOCs

Andrew Ng, Chris Piech, Chuong Do, Daphne Koller, Jonathan Huang, Zhenghao Chen

arxiv:1307.2579 v1 · 2013-07-09 · cs.LG · cs.AI · cs.HC · stat.AP · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7KD3TMU6HOQ4Z6BIT5AXMJKQ45}

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	2026-05-18T03:18:51.023095Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fa87b9b29e3ba1ccf8289f41762550e762a934fd77a484e12b973501843ac11f

Aliases

arxiv: 1307.2579 · arxiv_version: 1307.2579v1 · doi: 10.48550/arxiv.1307.2579 · pith_short_12: 7KD3TMU6HOQ4 · pith_short_16: 7KD3TMU6HOQ4Z6BI · pith_short_8: 7KD3TMU6

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/7KD3TMU6HOQ4Z6BIT5AXMJKQ45 \
  | 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: fa87b9b29e3ba1ccf8289f41762550e762a934fd77a484e12b973501843ac11f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ec219f175e2f79e9c8145868c683c8d61781ada1a349ac520c9a5e26c790f40",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.HC",
      "stat.AP",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2013-07-09T20:03:51Z",
    "title_canon_sha256": "3fc17de73e838b999032940b91c18250de0ebfbd8fc0b826fa41857027c36cfb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.2579",
    "kind": "arxiv",
    "version": 1
  }
}