Pith Number

pith:5OQHHG2Y

pith:2026:5OQHHG2YTJLQ7DLDQPZEBEYAVH

not attested not anchored not stored refs pending

Syntactically-guided Information Maintenance in Sentence Comprehension

Kohei Kajikawa, Shinnosuke Isono

Syntactic structure tells readers which sentence parts to keep active in memory for upcoming predictions.

arxiv:2604.27468 v2 · 2026-04-30 · cs.CL

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\usepackage{pith}
\pithnumber{5OQHHG2YTJLQ7DLDQPZEBEYAVH}

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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.

Claims

C1strongest claim

Although these factors have been treated as competing hypotheses in the literature, our account predicts that they are not reducible to one another. We show this is the case, using a naturalistic reading time dataset in Japanese... there is a tradeoff such that readers that slow down for maintenance tend to benefit more from predictability.

C2weakest assumption

That the syntactic properties of Japanese create a clear contrast allowing the two maintenance factors to be distinguished in reading time data, and that reading times directly index maintenance costs without major confounds from other processing variables.

C3one line summary

Syntactic structure guides selective maintenance via distinct costs from predicted heads and incomplete dependencies, supported by Japanese reading time data showing they are irreducible and interact with predictability.

Receipt and verification

First computed	2026-05-25T02:01:21.323888Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eba0739b589a570f8d6383f2409300a9f2ba6e380735d3dfb82a91a43df7c5ce

Aliases

arxiv: 2604.27468 · arxiv_version: 2604.27468v2 · doi: 10.48550/arxiv.2604.27468 · pith_short_12: 5OQHHG2YTJLQ · pith_short_16: 5OQHHG2YTJLQ7DLD · pith_short_8: 5OQHHG2Y

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/5OQHHG2YTJLQ7DLDQPZEBEYAVH \
  | 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: eba0739b589a570f8d6383f2409300a9f2ba6e380735d3dfb82a91a43df7c5ce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bfc0d5d97a9dab2dc5ecfe8a8dd32bc0d7d84ee19efed3c555800e7612debc8c",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-04-30T06:11:40Z",
    "title_canon_sha256": "77cf225b7243f1bcdee844c6c240ed64dffc07be32f33a56de68cf591fc05d8c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.27468",
    "kind": "arxiv",
    "version": 2
  }
}