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# The ISO Standard for Dialogue Act Annotation, Second Edition

**Authors:** [Harry Bunt](https://md.mova.elamur.ai/free/en/docs/papers/authors/harry-bunt/), [Volha Petukhova](https://md.mova.elamur.ai/free/en/docs/papers/authors/volha-petukhova/), Emer Gilmartin, Catherine Pelachaud, Alex Fang, Simon Keizer, Laurent Prévot · **Year:** 2020 · **Venue:** LREC 2020 **Link:** [aclanthology.org/2020.lrec-1.69](https://aclanthology.org/2020.lrec-1.69/) · **Licence:** [CC BY-NC 4.0](https://creativecommons.org/licenses/by-nc/4.0/) as printed on the paper — summary only

[**15** citations](https://openalex.org/works?filter=cites:W3032255889) openalex · 2026-10-19[**15** citations in our library](https://md.mova.elamur.ai/free/en/docs/papers/cited-by/bunt-2020-iso-standard-dialogue-act-annotation/) of the 140673 papers whose bibliographies we read[Proceedings of the Twelfth Language Resources and Evaluation Conference](https://aclanthology.org/volumes/2020.lrec-1/)[licence](https://creativecommons.org/licenses/by-nc/4.0/)

- [Publisher's page](https://aclanthology.org/2020.lrec-1.69/)
- [PDF](https://aclanthology.org/2020.lrec-1.69.pdf)
- [OpenAlex](https://openalex.org/W3032255889)

**Authors (7)**

1. [Harry Bunt](https://openalex.org/A5049617931) [ORCID](https://orcid.org/0000-0002-8596-4065) · [Semantic Scholar](https://www.semanticscholar.org/author/1786202) · h 27 · 2900 citations · 244 works
2. [Volha Petukhova](https://openalex.org/A5020337880) [ORCID](https://orcid.org/0000-0002-2581-2174) · [Semantic Scholar](https://www.semanticscholar.org/author/144090767) · h 17 · 1140 citations · 100 works
3. [Emer Gilmartin](https://openalex.org/A5035819309) [ORCID](https://orcid.org/0000-0002-3248-8982) · [Semantic Scholar](https://www.semanticscholar.org/author/2977217) · h 14 · 1166 citations · 64 works
4. [Catherine Pelachaud](https://openalex.org/A5079026902) [ORCID](https://orcid.org/0000-0003-1008-0799) · [Semantic Scholar](https://www.semanticscholar.org/author/1703084) · h 52 · 11470 citations · 800 works
5. [Alex Fang](https://openalex.org/A5029444496) [ORCID](https://orcid.org/0000-0001-6651-1709) · [Semantic Scholar](https://www.semanticscholar.org/author/5730733) · h 15 · 1009 citations · 147 works
6. [Simon Keizer](https://openalex.org/A5062392738) [ORCID](https://orcid.org/0000-0003-0173-8966) · [Semantic Scholar](https://www.semanticscholar.org/author/1796426) · h 23 · 2000 citations · 82 works
7. [Laurent Prévot](https://openalex.org/A5061093849) [ORCID](https://orcid.org/0000-0002-2463-2382) · [Semantic Scholar](https://www.semanticscholar.org/author/2670202) · h 20 · 1251 citations · 310 works

Citations and author metrics from openalex (2026-10-19); authors with the same name are not always told apart.

## What it is about

The paper describes what changed in the second edition of ISO 24617-2, the multidimensional dialogue act scheme. Dependence relations become more precise: an answer or agreement has a *functional* dependence on an earlier act, while feedback has a *feedback* dependence on a "reference segment" that may be smaller than a whole utterance (one misheard word). A Contact Management dimension is added. The main novelty is the "layered plug-in": a plug-in brings its own abstract syntax, concrete syntax and semantics, so a dialogue act can be linked to its semantic content (attribute-value pairs, or events with semantic roles after ISO 24617-4), to a rhetorical relation with argument roles and a semantic/pragmatic domain (19 relations after DR-Core), to extra social-talk functions (politeness question, opening/closing politeness statement, farewell wish), to five-level feedback functions, or to an emotion with holder and object. No evaluation numbers; it is a specification paper.

## Ideas

- I1. Give a responsive `Say` frame a functional dependence: an answer, agreement, disagreement, acceptance or refusal points to the frame of the question, offer or request it responds to (a `dep` index next to `cause`/`next` in `prag/src/frames.rs`). Then «What did the fox answer?» or «Did the crow agree?» can follow the link. Measure: speaker/says F1 on the frame bench and the count of questions about replies right in `world knowledge diagnose`.
- I2. Report act accuracy at two grains, as the ISO hierarchy allows: the 16 `Act` values and their ISO parents (Inform: assert/narrate/evaluate/express; Question: ask; Directive: request/suggest/warn; Commissive: offer/promise; Responsive: agree/disagree; SOM: thank/apologize/greet). Most of the perceptron's act errors (evaluate→assert 139, express→assert 50) stay inside Inform. Add a parent table to `prag/src/schema.rs` and a coarse column to `prag eval`; measure coarse vs fine macro-F1 on the silver.
- I3. Split the `cause` link by domain, as the second edition does for rhetorical relations: a semantic cause («Ray is sick; a virus attacked him») vs a pragmatic/epistemic one («Ray is sick; he beats his wife» — a reason for saying it). A cue: a cause clause attached to a Say frame, to an evaluation or to a modal of inference (*must*) is pragmatic. Measure cause precision on the frame bench before and after, and whether `Ask::Cause` answers improve.
- I4. Attach an emotion to `express`/`evaluate` acts as a triple (holder = the speaker, object = the frame evaluated, category/polarity). This makes `polarity` say whose evaluation of what, which the sentence-level label cannot. Measure polarity macro-F1 in `prag eval` when the object is known vs unknown.

## For Mova

[31. Speech acts](https://md.mova.elamur.ai/free/en/docs/languages/en/31-speech-acts/) §7.2–7.3 (already maps `Act` to ISO; the hierarchy and dependence are not used yet) and `38-dialogue-and-discourse-markers.md` §10; `36-discourse-relations.md` for the semantic/pragmatic cause. Code: `prag/src/schema.rs` (parent table), `prag/src/frames.rs` (functional dependence, cause domain), `prag/src/eval.rs` (coarse act score), `world/src/talk.rs` (the social-talk functions are already there). Measures: frame bench, `prag eval` act and polarity macro-F1.

Topics: [Speech act theory](https://md.mova.elamur.ai/free/en/docs/papers/topics/speech-act-theory/)

## Cite

The paper itself, not this card. BibTeX from the library's record of the work.

```
@inproceedings{bunt2020iso,
  title = {{The ISO Standard for Dialogue Act Annotation, Second Edition}},
  author = {Bunt, Harry and Petukhova, Volha and Gilmartin, Emer and Pelachaud, Catherine and Fang, Alex and Keizer, Simon and Prévot, Laurent},
  booktitle = {Proceedings of the Twelfth Language Resources and Evaluation Conference},
  year = {2020},
  url = {https://aclanthology.org/2020.lrec-1.69/}
}
```

- [← previous Revisiting the ISO standard for dialogue act annotation](https://md.mova.elamur.ai/free/en/docs/papers/bunt-2017-revisiting-iso-standard-dialogue-act/)
- [next → Incorporating Information Status into Generation Ranking](https://md.mova.elamur.ai/free/en/docs/papers/cahill-2009-incorporating-information-status-into-generation/)
- [↑ back to English](https://md.mova.elamur.ai/free/en/docs/papers/en/)

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32. Prasad, R., N. Dinesh, A. Lee, E. Miltsakaki, L. Robaldo, A. Joshi, and B. Webber (2008). The Penn Discourse TreeBank 2.0. In Proceedings 6th International Conference on Language Resources and Evaluation (LREC 2008), Marrakech. Paris: ELRA. [find](https://scholar.google.com/scholar?q=Prasad%2C+R%2E%2C+N%2E+Dinesh%2C+A%2E+Lee%2C+E%2E+Miltsakaki%2C+L%2E+Robaldo%2C+A%2E+Joshi%2C+and+B%2E+Webber+%282008%29%2E+The+Penn+Discourse+TreeBank+2%2E0%2E+In+Proceedings+6th+International+Conference+on+Language+Resources+and+Evaluat) [our card](https://md.mova.elamur.ai/free/en/docs/papers/disc-2008-prasad-penn-discourse-treebank-2-0/)