Pith Number

pith:BXUTHSWK

pith:2019:BXUTHSWKYFM3T4RBQJEE2BCG6Q

not attested not anchored not stored refs pending

Block based Singular Value Decomposition approach to matrix factorization for recommender systems

Prasad Bhavana, Vikas Kumar, Vineet Padmanabhan

arxiv:1907.07410 v1 · 2019-07-17 · cs.LG · cs.AI · cs.IR · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BXUTHSWKYFM3T4RBQJEE2BCG6Q}

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	2026-05-17T23:40:16.881131Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0de933cacac159b9f22182484d0446f417190efe8b677aee5bc642978691a5ea

Aliases

arxiv: 1907.07410 · arxiv_version: 1907.07410v1 · doi: 10.48550/arxiv.1907.07410 · pith_short_12: BXUTHSWKYFM3 · pith_short_16: BXUTHSWKYFM3T4RB · pith_short_8: BXUTHSWK

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/BXUTHSWKYFM3T4RBQJEE2BCG6Q \
  | 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: 0de933cacac159b9f22182484d0446f417190efe8b677aee5bc642978691a5ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1230e6d5d51f8f390a07841d6f9ce0454ebe8f7776af400addd6b6cab849045b",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.IR",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2019-07-17T09:35:56Z",
    "title_canon_sha256": "3fb39e24a76cded0051f72132aa4568dec64d0c04b4823dfec2ff10316e35def"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.07410",
    "kind": "arxiv",
    "version": 1
  }
}