Pith Number

pith:ZK7SQFT2

pith:2021:ZK7SQFT227NDXEZGXNFNKACWVW

not attested not anchored not stored refs pending

Kernel Learning For Sound Field Estimation With L1 and L2 Regularizations

Hiroshi Saruwatari, Juliano G. C. Ribeiro, Natsuki Ueno, Ryosuke Horiuchi, Shoichi Koyama

arxiv:2110.04972 v2 · 2021-10-11 · cs.SD · eess.AS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZK7SQFT227NDXEZGXNFNKACWVW}

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	2026-07-05T03:22:03.272633Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cabf28167ad7da3b9326bb4ad50056ad8bcfe6842d9fe6739699de16d2e7b0cd

Aliases

arxiv: 2110.04972 · arxiv_version: 2110.04972v2 · doi: 10.48550/arxiv.2110.04972 · pith_short_12: ZK7SQFT227ND · pith_short_16: ZK7SQFT227NDXEZG · pith_short_8: ZK7SQFT2

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/ZK7SQFT227NDXEZGXNFNKACWVW \
  | 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: cabf28167ad7da3b9326bb4ad50056ad8bcfe6842d9fe6739699de16d2e7b0cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "098f917960976e4d42051896de2097ae426207da367fa13d24051bd14c15e6d8",
    "cross_cats_sorted": [
      "eess.AS"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.SD",
    "submitted_at": "2021-10-11T03:02:54Z",
    "title_canon_sha256": "5f18750909ef0f85df85a6668afb98bbb5646a4fcf8fbf7ecda62f18c2422759"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2110.04972",
    "kind": "arxiv",
    "version": 2
  }
}