Pith Number

pith:FF3JCV5Q

pith:2025:FF3JCV5QDMBLLXAH6SWIQPJCJ4

not attested not anchored not stored refs pending

Exploring $\ell_0$ Sparsification for Inference-free Sparse Retrievers

Xinjie Shen, Yang Yang, Zhichao Geng

arxiv:2504.14839 v1 · 2025-04-21 · cs.IR · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FF3JCV5QDMBLLXAH6SWIQPJCJ4}

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	2026-07-05T10:51:51.347433Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

29769157b01b02b5dc07f4ac883d224f38701df17dcd1200fde309e9d9c6e777

Aliases

arxiv: 2504.14839 · arxiv_version: 2504.14839v1 · doi: 10.48550/arxiv.2504.14839 · pith_short_12: FF3JCV5QDMBL · pith_short_16: FF3JCV5QDMBLLXAH · pith_short_8: FF3JCV5Q

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/FF3JCV5QDMBLLXAH6SWIQPJCJ4 \
  | 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: 29769157b01b02b5dc07f4ac883d224f38701df17dcd1200fde309e9d9c6e777

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "01880a1e1bbc65e595b24dca393be55cb785fee0a7e122af286991de91680889",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2025-04-21T03:40:43Z",
    "title_canon_sha256": "55e3ab059c241506dd72e9ea7e827884498217aa61174500a223a1bebd433a16"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.14839",
    "kind": "arxiv",
    "version": 1
  }
}