Pith Number

pith:IKZZ4E7M

pith:2019:IKZZ4E7MV3KZCW6ORWEOCKE4AN

not attested not anchored not stored refs pending

Collaborative Filtering via High-Dimensional Regression

Harald Steck

arxiv:1904.13033 v1 · 2019-04-30 · 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{IKZZ4E7MV3KZCW6ORWEOCKE4AN}

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	2026-05-17T23:47:24.129759Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

42b39e13ecaed5915bce8d88e1289c034fa1ccab3a75c70f24d86497c5942a22

Aliases

arxiv: 1904.13033 · arxiv_version: 1904.13033v1 · doi: 10.48550/arxiv.1904.13033 · pith_short_12: IKZZ4E7MV3KZ · pith_short_16: IKZZ4E7MV3KZCW6O · pith_short_8: IKZZ4E7M

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/IKZZ4E7MV3KZCW6ORWEOCKE4AN \
  | 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: 42b39e13ecaed5915bce8d88e1289c034fa1ccab3a75c70f24d86497c5942a22

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "980093a1c3df7afc3c87bc7b8dc706403117820670678948c3ce937155d340ff",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2019-04-30T03:21:19Z",
    "title_canon_sha256": "1d03675120bf89d84fd81b7db67639f9d5862ec483df27260306c62a70c7a3f5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.13033",
    "kind": "arxiv",
    "version": 1
  }
}