Pith Number

pith:4NEFIFBK

pith:2019:4NEFIFBKDSRGPVKLMET4NFFTUL

not attested not anchored not stored refs pending

A Discrete Hard EM Approach for Weakly Supervised Question Answering

Danqi Chen, Hannaneh Hajishirzi, Luke Zettlemoyer, Sewon Min

arxiv:1909.04849 v1 · 2019-09-11 · cs.CL · 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{4NEFIFBKDSRGPVKLMET4NFFTUL}

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

2 papers in Pith

REALM: Retrieval-Augmented Language Model Pre-Training

How Much Knowledge Can You Pack Into the Parameters of a Language Model?

Receipt and verification

First computed	2026-07-05T00:04:00.963782Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e34854142a1ca267d54b6127c694b3a2e0004a4b34a7b952fe58198455c6f587

Aliases

arxiv: 1909.04849 · arxiv_version: 1909.04849v1 · doi: 10.48550/arxiv.1909.04849 · pith_short_12: 4NEFIFBKDSRG · pith_short_16: 4NEFIFBKDSRGPVKL · pith_short_8: 4NEFIFBK

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/4NEFIFBKDSRGPVKLMET4NFFTUL \
  | 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: e34854142a1ca267d54b6127c694b3a2e0004a4b34a7b952fe58198455c6f587

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1e937a31eef2d4c9f881a5736106062c34afde32ef9ec919a59ccb7f5bc2e199",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2019-09-11T04:47:36Z",
    "title_canon_sha256": "1311035738b08d7cbb08609f547deb98a81ef1efefa6c05fdd72bc251cde4d02"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.04849",
    "kind": "arxiv",
    "version": 1
  }
}