Pith Number

pith:2N43BN2E

pith:2021:2N43BN2EJU45BJL7C2GWWIVAIT

not attested not anchored not stored refs pending

Optimizing Dense Retrieval Model Training with Hard Negatives

Jiafeng Guo, Jiaxin Mao, Jingtao Zhan, Min Zhang, Shaoping Ma, Yiqun Liu

arxiv:2104.08051 v1 · 2021-04-16 · cs.IR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2N43BN2EJU45BJL7C2GWWIVAIT}

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.

Cited by

1 paper in Pith

MASS-DPO: Multi-negative Active Sample Selection for Direct Policy Optimization

Receipt and verification

First computed	2026-07-05T02:32:40.470808Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d379b0b7444d39d0a57f168d6b22a044caac9cb3183d79c7154e121857abe555

Aliases

arxiv: 2104.08051 · arxiv_version: 2104.08051v1 · doi: 10.48550/arxiv.2104.08051 · pith_short_12: 2N43BN2EJU45 · pith_short_16: 2N43BN2EJU45BJL7 · pith_short_8: 2N43BN2E

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/2N43BN2EJU45BJL7C2GWWIVAIT \
  | 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: d379b0b7444d39d0a57f168d6b22a044caac9cb3183d79c7154e121857abe555

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "99760c39b64fb72c119ff050b1869e174fda1b0264c3a16b12742be6280c0af2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2021-04-16T11:57:35Z",
    "title_canon_sha256": "97e14843bca0fb6ede7c6bb1d0ea3e2bea2c1aa90d80cd5112bbe148828739bf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.08051",
    "kind": "arxiv",
    "version": 1
  }
}