Pith Number

pith:CI5PP7K6

pith:2019:CI5PP7K65L6WAIE6BDQVYXDFO6

not attested not anchored not stored refs pending

EKT: Exercise-aware Knowledge Tracing for Student Performance Prediction

Enhong Chen, Guoping Hu, Hui Xiong, Qi Liu, Yu Su, Yu Yin, Zhenya Huang

arxiv:1906.05658 v1 · 2019-06-07 · cs.CY · 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{CI5PP7K65L6WAIE6BDQVYXDFO6}

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	2026-05-17T23:43:24.680443Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

123af7fd5eeafd60209e08e15c5c65778a1c6a4d2abd97cbd1f5abe75116e629

Aliases

arxiv: 1906.05658 · arxiv_version: 1906.05658v1 · doi: 10.48550/arxiv.1906.05658 · pith_short_12: CI5PP7K65L6W · pith_short_16: CI5PP7K65L6WAIE6 · pith_short_8: CI5PP7K6

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/CI5PP7K65L6WAIE6BDQVYXDFO6 \
  | 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: 123af7fd5eeafd60209e08e15c5c65778a1c6a4d2abd97cbd1f5abe75116e629

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "01e27955aa8349e32a21102a644e8827bf5b91ec279cf75c3528d9ce8fbc7600",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2019-06-07T08:10:16Z",
    "title_canon_sha256": "cb75187aad1b6f881fd85bfb4f2accb6b01d8a01f14ac0acb83511431b162c15"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.05658",
    "kind": "arxiv",
    "version": 1
  }
}