Pith Number

pith:EL3J4C2Y

pith:2019:EL3J4C2YDX3NADFLO7O6OT34RZ

not attested not anchored not stored refs pending

Adaptive Learning Material Recommendation in Online Language Education

Erik Andersen, Hao Wu, Ji Hun Kim, Shuhan Wang

arxiv:1905.10893 v1 · 2019-05-26 · cs.IR · cs.AI · cs.HC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EL3J4C2YDX3NADFLO7O6OT34RZ}

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	2026-05-17T23:45:03.479116Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

22f69e0b581df6d00cab77dde74f7c8e53a45453f96dbfb108a991e2d9129718

Aliases

arxiv: 1905.10893 · arxiv_version: 1905.10893v1 · doi: 10.48550/arxiv.1905.10893 · pith_short_12: EL3J4C2YDX3N · pith_short_16: EL3J4C2YDX3NADFL · pith_short_8: EL3J4C2Y

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/EL3J4C2YDX3NADFLO7O6OT34RZ \
  | 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: 22f69e0b581df6d00cab77dde74f7c8e53a45453f96dbfb108a991e2d9129718

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4b370f4b42e00fff556116af06c30bfa9f44e7ac69fa09fbeaff4a4cddca4c50",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.HC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2019-05-26T21:59:49Z",
    "title_canon_sha256": "965eeaf30c0bc35dc4cde659763165cbaa370f2315db8d48ea457ccbf8c7baae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.10893",
    "kind": "arxiv",
    "version": 1
  }
}