Dhātu Experiments v0.1 and Typological Sample (child-directed-first)

This page consolidates artifacts from experiments/dhatu/ (v0.1) into a unified view for research and publications. It documents data sources, the typological sample, targeted phenomena, and reproducible metrics.

Goal and scope

• Establish a minimal set of cross-lingual primitives (Dhātu) exercised on a toy corpus and multilingual child-directed prompts.
• Build a balanced typological sample (child-directed-first) for cross-language comparisons.
• Provide simple metrics and source links for traceability and reproducibility.

Data sources (external refs)

• CHILDES (TalkBank): https://childes.talkbank.org/
• WALS (World Atlas of Language Structures): https://wals.info/
• Universal Dependencies (UD): https://universaldependencies.org/
• African Storybook: https://www.africanstorybook.org/
• Global Storybooks: https://globalstorybooks.net/
• Storybooks Canada: https://storybookscanada.ca/

Typological sample v0.1

Priority: child‑directed, morpho‑syntactic diversity. Selected languages and profiles:

• English (eng) — Indo‑European > Germanic — SVO
• CHILDES: Brown/Providence → https://childes.talkbank.org/access/Eng-NA/
• GlobalStorybooks: English → https://globalstorybooks.net/collections/english/
• French (fra) — Indo‑European > Romance — SVO
• CHILDES: French → https://childes.talkbank.org/access/French/
• GlobalStorybooks: Français → https://globalstorybooks.net/collections/french/
• Spanish (spa) — Indo‑European > Romance — SVO
• CHILDES: Spanish → https://childes.talkbank.org/access/Spanish/
• GlobalStorybooks: Español → https://globalstorybooks.net/collections/spanish/
• German (deu) — Indo‑European > Germanic — SVO, V2
• CHILDES: German → https://childes.talkbank.org/access/German/
• GlobalStorybooks: Deutsch → https://globalstorybooks.net/collections/german/
• Dutch (nld) — Indo‑European > Germanic — SVO, V2
• CHILDES: Dutch → https://childes.talkbank.org/access/Dutch/
• Italian (ita) — Indo‑European > Romance — SVO
• CHILDES: Italian → https://childes.talkbank.org/access/Italian/
• GlobalStorybooks: Italiano → https://globalstorybooks.net/collections/italian/
• Portuguese (por) — Indo‑European > Romance — SVO
• CHILDES: Portuguese → https://childes.talkbank.org/access/Portuguese/
• GlobalStorybooks: Português → https://globalstorybooks.net/collections/portuguese/
• Mandarin Chinese (cmn) — Sino‑Tibetan — SVO, classifiers
• CHILDES: Mandarin → https://childes.talkbank.org/access/Mandarin/
• GlobalStorybooks: 中文 (简体) → https://globalstorybooks.net/collections/chinese-simplified/
• Japanese (jpn) — Japonic — SOV, honorifics
• CHILDES: Japanese → https://childes.talkbank.org/access/Japanese/
• GlobalStorybooks: 日本語 → https://globalstorybooks.net/collections/japanese/
• Korean (kor) — Koreanic — SOV, honorifics
• CHILDES: Korean → https://childes.talkbank.org/access/Korean/
• GlobalStorybooks: 한국어 → https://globalstorybooks.net/collections/korean/
• Turkish (tur) — Turkic — SOV, agglutinative
• CHILDES: Turkish → https://childes.talkbank.org/access/Turkish/
• GlobalStorybooks: Türkçe → https://globalstorybooks.net/collections/turkish/
• Hungarian (hun) — Uralic — agglutinative
• CHILDES: Hungarian → https://childes.talkbank.org/access/Hungarian/
• GlobalStorybooks: Magyar → https://globalstorybooks.net/collections/hungarian/
• Hebrew (heb) — Afro‑Asiatic > Semitic — root‑and‑pattern
• CHILDES: Hebrew → https://childes.talkbank.org/access/Hebrew/
• GlobalStorybooks: עברית → https://globalstorybooks.net/collections/hebrew/
• Arabic (arb) — Afro‑Asiatic > Semitic — VSO/SVO, root‑and‑pattern
• GlobalStorybooks: العربية → https://globalstorybooks.net/collections/arabic/
• Swahili (swa) — Niger‑Congo > Bantu — SVO, noun classes
• AfricanStorybook: Kiswahili → https://www.africanstorybook.org/language/kiswahili
• Yoruba (yor) — Niger‑Congo — SVO, SVC
• AfricanStorybook: Yorùbá → https://www.africanstorybook.org/language/yoruba
• Hausa (hau) — Afro‑Asiatic > Chadic — SVO
• AfricanStorybook: Hausa → https://www.africanstorybook.org/language/hausa
• Zulu (zul) — Niger‑Congo > Bantu — SVO, noun classes
• AfricanStorybook: isiZulu → https://www.africanstorybook.org/language/isizulu
• Inuktitut (iku) — Eskimo–Aleut — polysynthetic, incorporation
• StorybooksCanada: ᐃᓄᒃᑎᑐᑦ → https://storybookscanada.ca/?lang=iu

Child‑directed prompts: available languages

Codes in experiments/dhatu/prompts_child/:

arb, cmn, deu, en, eus, ewe, fr, hau, heb, hin, hun, iku, jpn, kor, nld, spa, swa, tur, yor, zul

Covered phenomena (aggregate)

Counts across child languages (top categories):

• spatial:in — 38
• AAO — 20
• possession — 20
• quantification — 20
• negation — 20
• time:now — 20
• event:sequence — 20
• comparison:more — 20
• existence — 20
• spatial:on — 19
• evidential:reported — 19
• modality:possibility — 15
• aspect:progressive — 12
• modality:permission — 5
• SVC — 3
• plural — 2
• aspect? — 2
• SVC-like — 2
• spatial:dans — 2
• aspect:progressive? — 1
• spatial:sur — 1
• incorporation? — 1
• evidential:inferential — 1
• habitual? — 1

Experimental metrics (v0.1)

• Toy corpus (toy_corpus.json + gold_encodings.json):
• sentences: 12
• covered: 12 — rate = 1.0
• avg primitives per encoding: 3.667
• Child prompts (child gold encodings): gold_encodings_child.json currently empty → detailed metrics pending (annotation in progress).

Repro (local)

Run from repo root:

• Typological sample and sources:
• python3 experiments/dhatu/validator.py --list-sample
• Available child languages:
• python3 experiments/dhatu/validator.py --list-child-langs
• Phenomena counts across child languages:
• python3 experiments/dhatu/validator.py --phenomena
• Toy corpus metrics:
• python3 experiments/dhatu/validator.py --metrics

Internal links

• Dhātu Inventory v0.1: research/dhatu-inventory-v0-1.md
• Research references: research/references.md

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Last updated: generated from experiments/dhatu/ v0.1 sources.