Pith Number

pith:NHD6KDDX

pith:2021:NHD6KDDX3FPBONGGH4EKUMEMBV

not attested not anchored not stored refs pending

Towards a Better Tradeoff between Effectiveness and Efficiency in Pre-Ranking: A Learnable Feature Selection based Approach

Bo Zheng, Chuhan Zhao, Hui Zhao, Jian Xu, Kuang-chih Lee, Pengjie Wang, Shaoguo Liu, Wei Lin, Xu Ma

arxiv:2105.07706 v1 · 2021-05-17 · 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{NHD6KDDX3FPBONGGH4EKUMEMBV}

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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	2026-07-05T02:40:43.674039Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

69c7e50c77d95e1734c63f08aa308c0d713f18671145a01e1e37f332e1e54d16

Aliases

arxiv: 2105.07706 · arxiv_version: 2105.07706v1 · doi: 10.48550/arxiv.2105.07706 · pith_short_12: NHD6KDDX3FPB · pith_short_16: NHD6KDDX3FPBONGG · pith_short_8: NHD6KDDX

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/NHD6KDDX3FPBONGGH4EKUMEMBV \
  | 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: 69c7e50c77d95e1734c63f08aa308c0d713f18671145a01e1e37f332e1e54d16

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "21a3d3469ed2b0b1a47ed2641a06baa2ca2c821958c0e639075840e62f4860c1",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2021-05-17T09:48:15Z",
    "title_canon_sha256": "5843903d522ae8368c6fe63c28ef76ccdcbf8ae2380fd3f08a6373220792ddb9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.07706",
    "kind": "arxiv",
    "version": 1
  }
}