---
title: "汉语被动结构解析及其在CAMR中的应用研究 — 胡康 2025"
description: "The paper addresses the automatic analysis of the internal makeup of Chinese passive sentences."
authors: ["胡康", "曲维光", "魏庭新", "周俊生", "李斌", "顾彦慧"]
year: 2025
venue: "中文信息学报 (Journal of Chinese Information Processing)"
source: "http://jcip.cipsc.org.cn/article/id/zwxxxb_3976"
licence: "Free access (jcip.cipsc.org.cn), no open licence stated — readonly; © 中文信息学报"
summary_licence: "Elamur Cosmic License"
canonical: "https://research.elamur.ai/free/papers/hu-2025-parsing-passive-structure/"
---
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# 汉语被动结构解析及其在CAMR中的应用研究

**Authors:** 胡康, 曲维光, 魏庭新, 周俊生, 李斌, 顾彦慧 · **Year:** 2025 · **Venue:** 中文信息学报 (Journal of Chinese Information Processing) · **Licence:** Free access (jcip.cipsc.org.cn), no open licence stated — readonly; © 中文信息学报

**Links:** [Publisher's page](http://jcip.cipsc.org.cn/article/id/zwxxxb_3976) · [PDF](http://jcip.cipsc.org.cn/cn/article/pdf/preview/zwxxxb_3976.pdf)

## Summary
The paper addresses the automatic analysis of the internal makeup of Chinese passive sentences. Earlier work could only flag whether a sentence was passive. The authors treat the problem as a specialised form of semantic role labeling. Each passive structure is a tuple of verb (V), patient-like argument (A1), optional agent (A0) and optional marker (M), which can be a preposition such as 被 or a "suffering" verb such as 遭到.

They sampled sentences from an existing passive-sentence corpus and labelled them at the word level. The scheme uses BIO tags plus an index that links each component to its verb. Their model, PS-CRF, has three parts:
- BERT-wwm-ext embeddings
- biaffine attention scoring over a tree in which each verb heads its components
- a TreeCRF output layer with Viterbi decoding

PS-CRF reaches an F1 of 97.31%. The parser's output was also used to post-process CAMR graphs produced by SPRING on primary-school Chinese texts, which raised both Smatch and Align-Smatch. This shows that targeted structural parsing can improve broader semantic graph parsing.

## Key points
- **Dataset:** 3,839 passive sentences were annotated with 4,814 passive structures, about 1.25 per sentence.
  - 2,711 are marked: 2,465 with a prepositional marker, 190 with a suffering-verb marker, and 56 attributive cases.
  - 2,103 are unmarked, including a small number of attributive cases.
  - The data was split 6:2:2 into train, dev and test.
- **Results:** PS-CRF scores P 98.46 / R 96.18 / F1 97.31. Baselines:
  - plain CRF with GloVe: F1 77.59
  - Biaffine+TreeCRF: F1 80.47
  - BERT+Biaffine+TreeCRF: F1 96.44
- **Why the tree helps:** Modelling each passive structure as its own dependency tree lets the model handle sentences with several, possibly nested, passive structures. A flat CRF cannot do this.
- **Remaining errors:** Most come from attributive (定中) passive structures, which are under 2% of the data. Others come from words with several senses that get mistaken for passive verbs.
- **CAMR post-processing with SPRING:**
  - Without alignment: Align-Smatch rose from 45.2 to 47.6 and Smatch from 69.8 to 70.74.
  - With manually added concept alignment: Align-Smatch rose from 62.3 to 65.8.
  - The Smatch gains are smaller because markers are encoded inside relation labels rather than as separate nodes.

*Our summary of the paper, in our own words — not its text. The work belongs to its authors; read it at the links above.*

Fields: [Linguistics & languages](https://md.research.elamur.ai/free/shelves/linguistics/) · [Natural language processing](https://md.research.elamur.ai/free/shelves/nlp/)

Topics: [Dependency parsing](https://md.research.elamur.ai/free/topics/dependency-parsing/)

## Cite

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

```bibtex
@article{2025,
  title = {{汉语被动结构解析及其在CAMR中的应用研究}},
  author = {胡康 and 曲维光 and 魏庭新 and 周俊生 and 李斌 and 顾彦慧},
  journal = {中文信息学报 (Journal of Chinese Information Processing)},
  year = {2025},
  url = {http://jcip.cipsc.org.cn/article/id/zwxxxb_3976}
}
```

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