Pith Number

pith:3PQW3ZDW

pith:2011:3PQW3ZDWTW2R7O3PPGNIXDBX4N

not attested not anchored not stored refs pending

Dynamic Matrix Factorization: A State Space Approach

John Z. Sun, Karthik Subbian, Kush R. Varshney

arxiv:1110.2098 v3 · 2011-10-10 · 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{3PQW3ZDWTW2R7O3PPGNIXDBX4N}

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	2026-05-18T03:49:22.178377Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dbe16de4769db51fbb6f799a8b8c37e36e93fba427823467f1e40e6d3b20035d

Aliases

arxiv: 1110.2098 · arxiv_version: 1110.2098v3 · doi: 10.48550/arxiv.1110.2098 · pith_short_12: 3PQW3ZDWTW2R · pith_short_16: 3PQW3ZDWTW2R7O3P · pith_short_8: 3PQW3ZDW

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/3PQW3ZDWTW2R7O3PPGNIXDBX4N \
  | 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: dbe16de4769db51fbb6f799a8b8c37e36e93fba427823467f1e40e6d3b20035d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aa5c27e5f5569bdac18216f2ec77dd453204d7f2f571b8ee7994f9439c0f460f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2011-10-10T16:35:51Z",
    "title_canon_sha256": "8a81a5ba8482020b2669e8612672c7701030e86dd02865b42b72aec1caedd0c3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.2098",
    "kind": "arxiv",
    "version": 3
  }
}