Pith Number

pith:PUFELW35

pith:2016:PUFELW35IWGJ6UUHWFJGHYPTVQ

not attested not anchored not stored refs pending

Latent Skill Embedding for Personalized Lesson Sequence Recommendation

Igor Labutov, Siddharth Reddy, Thorsten Joachims

arxiv:1602.07029 v1 · 2016-02-23 · cs.LG · cs.AI · cs.CY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PUFELW35IWGJ6UUHWFJGHYPTVQ}

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	2026-05-18T01:20:07.410569Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d0a45db7d458c9f5287b15263e1f3ac1e7ab1fa7cb1ca9605a56f6d841f3f99

Aliases

arxiv: 1602.07029 · arxiv_version: 1602.07029v1 · doi: 10.48550/arxiv.1602.07029 · pith_short_12: PUFELW35IWGJ · pith_short_16: PUFELW35IWGJ6UUH · pith_short_8: PUFELW35

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/PUFELW35IWGJ6UUHWFJGHYPTVQ \
  | 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: 7d0a45db7d458c9f5287b15263e1f3ac1e7ab1fa7cb1ca9605a56f6d841f3f99

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "968511780bfd146e240bb1ca4cc4e13015485be3318d6d4941954e2fd338771d",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.CY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2016-02-23T04:20:40Z",
    "title_canon_sha256": "429d4e487351a00fd0fd5690d4f9614a83c066c3bdc343353a30254cd1ad86fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.07029",
    "kind": "arxiv",
    "version": 1
  }
}