Pith Number

pith:KQ6JJM3O

pith:2013:KQ6JJM3O5NWMK632WK7NTHF442

not attested not anchored not stored refs pending

Empirical Analysis of Predictive Algorithms for Collaborative Filtering

Carl Kadie, David Heckerman, John S. Breese

arxiv:1301.7363 v1 · 2013-01-30 · cs.IR · 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{KQ6JJM3O5NWMK632WK7NTHF442}

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	2026-05-18T03:35:00.353677Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

543c94b36eeb6cc57b7ab2bed99cbce68a1ce882380a455fc072d180a547f3f0

Aliases

arxiv: 1301.7363 · arxiv_version: 1301.7363v1 · doi: 10.48550/arxiv.1301.7363 · pith_short_12: KQ6JJM3O5NWM · pith_short_16: KQ6JJM3O5NWMK632 · pith_short_8: KQ6JJM3O

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/KQ6JJM3O5NWMK632WK7NTHF442 \
  | 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: 543c94b36eeb6cc57b7ab2bed99cbce68a1ce882380a455fc072d180a547f3f0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a9ba833a7c37952fcab90fe8720e73ed7eb679488bda27d5226dc37cd0eff816",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2013-01-30T15:02:44Z",
    "title_canon_sha256": "231297a13f13185aa3d3d6a94d95ff221798c0bf6d08d143473bacdcea9c72bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.7363",
    "kind": "arxiv",
    "version": 1
  }
}