Pith Number

pith:T6IV6J7T

pith:2021:T6IV6J7T6LA5TMLOZORFIWRHZG

not attested not anchored not stored refs pending

Group-Sparse Matrix Factorization for Transfer Learning of Word Embeddings

Hamsa Bastani, Kan Xu, Osbert Bastani, Xuanyi Zhao

arxiv:2104.08928 v4 · 2021-04-18 · stat.ML · cs.CL · 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{T6IV6J7T6LA5TMLOZORFIWRHZG}

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	2026-06-19T16:12:12.011024Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9f915f27f3f2c1d9b16ecba2545a27c9acdca5e18e519e8b78efd3aa627e19d6

Aliases

arxiv: 2104.08928 · arxiv_version: 2104.08928v4 · doi: 10.48550/arxiv.2104.08928 · pith_short_12: T6IV6J7T6LA5 · pith_short_16: T6IV6J7T6LA5TMLO · pith_short_8: T6IV6J7T

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/T6IV6J7T6LA5TMLOZORFIWRHZG \
  | 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: 9f915f27f3f2c1d9b16ecba2545a27c9acdca5e18e519e8b78efd3aa627e19d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ea1039aa3938956f90c3442a2b6d18daebf10e1716e6636a02cac559c3b4f19",
    "cross_cats_sorted": [
      "cs.CL",
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2021-04-18T18:19:03Z",
    "title_canon_sha256": "d58cc68b259eaed66ec6b79a0f599c977d321c99943f2e6df16f8d926afa8a92"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.08928",
    "kind": "arxiv",
    "version": 4
  }
}