Pith Number

pith:VRTT4ZEH

pith:2018:VRTT4ZEHSBBJPNUNWCWTGTG2NP

not attested not anchored not stored refs pending

Multi-task Learning of Pairwise Sequence Classification Tasks Over Disparate Label Spaces

Anders S{\o}gaard, Isabelle Augenstein, Sebastian Ruder

arxiv:1802.09913 v2 · 2018-02-27 · cs.CL · cs.NE · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VRTT4ZEHSBBJPNUNWCWTGTG2NP}

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	2026-05-18T00:19:02.271094Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac673e6487904297b68db0ad334cda6bf3280729a901d8d162f26f78cbe64ca6

Aliases

arxiv: 1802.09913 · arxiv_version: 1802.09913v2 · doi: 10.48550/arxiv.1802.09913 · pith_short_12: VRTT4ZEHSBBJ · pith_short_16: VRTT4ZEHSBBJPNUN · pith_short_8: VRTT4ZEH

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/VRTT4ZEHSBBJPNUNWCWTGTG2NP \
  | 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: ac673e6487904297b68db0ad334cda6bf3280729a901d8d162f26f78cbe64ca6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "17d8b40fc4d09c5b25f523a0fbafdde9ad81d83b00ae126f4512ec1bc2973663",
    "cross_cats_sorted": [
      "cs.NE",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2018-02-27T14:38:43Z",
    "title_canon_sha256": "bc85a2ba403ab18bf6f3c285513a9f28f9ae8f5a07e5c6e9c9ea5c5e56d66fab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.09913",
    "kind": "arxiv",
    "version": 2
  }
}