Pith Number

pith:L27UJ4DN

pith:2019:L27UJ4DNUGJIORHHDNHFVVSPHQ

not attested not anchored not stored refs pending

An Integrated Approach for Keyphrase Generation via Exploring the Power of Retrieval and Extraction

Hou Pong Chan, Irwin King, Lidong Bing, Piji Li, Wang Chen

arxiv:1904.03454 v1 · 2019-04-06 · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{L27UJ4DNUGJIORHHDNHFVVSPHQ}

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	2026-05-17T23:49:13.355952Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5ebf44f06da1928744e71b4e5ad64f3c0107d032149fc69ee4714ac4be7cc636

Aliases

arxiv: 1904.03454 · arxiv_version: 1904.03454v1 · doi: 10.48550/arxiv.1904.03454 · pith_short_12: L27UJ4DNUGJI · pith_short_16: L27UJ4DNUGJIORHH · pith_short_8: L27UJ4DN

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/L27UJ4DNUGJIORHHDNHFVVSPHQ \
  | 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: 5ebf44f06da1928744e71b4e5ad64f3c0107d032149fc69ee4714ac4be7cc636

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0fc439b9aa23696d8ed33c8a23dddbf8c8aec9ede0a53c0461c2fe68d914344e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2019-04-06T14:18:25Z",
    "title_canon_sha256": "b83b70095e2ac472cbe4dbb5a1bd6a80fc617c55241a2855574d3539e3644d8b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.03454",
    "kind": "arxiv",
    "version": 1
  }
}