---
title: "JointCL: A Joint Contrastive Learning Framework — Liang 2022"
description: "The paper addresses zero-shot stance detection (ZSSD): deciding whether a text supports, opposes or is neutral toward a target that never appeared in…"
authors: ["Bin Liang", "Qinglin Zhu", "Xiang Li", "Min Yang", "Lin Gui", "Yulan He", "Ruifeng Xu"]
year: 2022
venue: "Proceedings of the 60th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)"
source: "https://aclanthology.org/2022.acl-long.7/"
doi: "10.18653/v1/2022.acl-long.7"
licence: "CC BY 4.0 (ACL Anthology)"
licence_url: "https://creativecommons.org/licenses/by/4.0/"
summary_licence: "Elamur Cosmic License"
canonical: "https://research.elamur.ai/free/papers/liang-2022-jointcl-joint-contrastive-learning-framework/"
---
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# JointCL: A Joint Contrastive Learning Framework for Zero-Shot Stance Detection

**Authors:** [Bin Liang](https://md.research.elamur.ai/free/authors/bin-liang/), Qinglin Zhu, [Xiang Li](https://md.research.elamur.ai/free/authors/xiang-li/), [Min Yang](https://md.research.elamur.ai/free/authors/min-yang/), [Lin Gui](https://md.research.elamur.ai/free/authors/lin-gui/), [Yulan He](https://md.research.elamur.ai/free/authors/yulan-he/), [Ruifeng Xu](https://md.research.elamur.ai/free/authors/ruifeng-xu/) · **Year:** 2022 · **Venue:** Proceedings of the 60th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers) · **Licence:** [CC BY 4.0 (ACL Anthology)](https://creativecommons.org/licenses/by/4.0/)

**Links:** [Publisher's page](https://aclanthology.org/2022.acl-long.7/) · [PDF](https://aclanthology.org/2022.acl-long.7.pdf) · [DOI 10.18653/v1/2022.acl-long.7](https://doi.org/10.18653/v1/2022.acl-long.7) · [OpenAlex](https://openalex.org/W4285144860)

**Citations:** 73 citations (openalex-snapshot · 2026-10-14) · [46](#cited-by) in our library, of the 140673 papers whose bibliographies we read

## Summary
The paper addresses zero-shot stance detection (ZSSD): deciding whether a text supports, opposes or is neutral toward a target that never appeared in training. Earlier work used attention, adversarial training or commonsense-knowledge graphs to learn stance from context. Those methods did not exploit the idea that an unseen target can be understood through its relation to known targets. The authors propose JointCL, which couples two contrastive objectives on top of a BERT encoder.

- **Context-aware objective:** a supervised stance contrastive loss pulls together examples with the same stance label and pushes apart the others.
- **Target-aware objective:** prototypes are obtained by clustering the training representations. A prototypical graph is then built for each instance, so the prototypes act as a bridge between seen and unseen targets. An edge-oriented graph contrastive loss makes similar instances develop similar graph structures.

Across three benchmark datasets, including VAST and SEM16, JointCL reports state-of-the-art ZSSD results. It also performs well in few-shot and cross-target settings, which suggests the approach is a broadly reusable way to transfer stance knowledge to new topics.

## Key points
- The encoder is pre-trained BERT with input "[CLS] text [SEP] target [SEP]". The [CLS] vector serves as the instance representation.
- The stance contrastive loss works within each mini-batch. It uses cosine similarity with a temperature, treating same-label pairs as positives.
- The prototype construction follows prototypical contrastive learning (Li et al., 2021). The new edge-oriented loss operates on attention-score matrices, i.e., graph edges, rather than on node embeddings.
- The authors also tested few-shot detection on VAST and cross-target detection on SEM16, where JointCL consistently beat the comparison methods. A t-SNE plot of 200 VAST test instances per label shows clearer Pro/Con separation than BERT-GCN.
- Code is released at github.com/HITSZ-HLT/JointCL.

*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/)

## Cited by

Cited by

46 papers of our library cite it (of the 140673 whose bibliographies we read); 9 of them have a page here, 37 not yet.

- [TATA: Stance Detection via Topic-Agnostic and Topic-Aware Embeddings](https://md.research.elamur.ai/free/papers/hanley-2023-tata-stance-detection-topic-agnostic/)
- [Distilling Calibrated Knowledge for Stance Detection](https://md.research.elamur.ai/free/papers/li-2023-distilling-calibrated-knowledge-stance-detection/)
- [A New Direction in Stance Detection: Target-Stance Extraction in the Wild](https://md.research.elamur.ai/free/papers/li-2023-new-direction-stance-detection-target/)
- [Stance Detection on Social Media with Background Knowledge](https://md.research.elamur.ai/free/papers/li-2023-stance-detection-social-media-background/)
- [Multi-modal Stance Detection: New Datasets and Model](https://md.research.elamur.ai/free/papers/liang-2024-multi-modal-stance-detection-new/)
- [Multilingual Target-Stance Extraction](https://md.research.elamur.ai/free/papers/mines-2026-multilingual-target-stance-extraction/)
- [A Challenge Dataset and Effective Models for Conversational Stance Detection](https://md.research.elamur.ai/free/papers/niu-2024-challenge-dataset-effective-models-conversational/)
- [Zero-Shot and Few-Shot Stance Detection on Varied Topics via Conditional Generation](https://md.research.elamur.ai/free/papers/wen-2023-zero-shot-few-shot-stance/)
- [C-STANCE: A Large Dataset for Chinese Zero-Shot Stance Detection](https://md.research.elamur.ai/free/papers/zhao-2023-c-stance-large-dataset-chinese/)

## Cite

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

```bibtex
@inproceedings{liang2022jointcl,
  title = {{JointCL: A Joint Contrastive Learning Framework for Zero-Shot Stance Detection}},
  author = {Liang, Bin and Zhu, Qinglin and Li, Xiang and Yang, Min and Gui, Lin and He, Yulan and Xu, Ruifeng},
  booktitle = {Proceedings of the 60th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)},
  year = {2022},
  doi = {10.18653/v1/2022.acl-long.7},
  url = {https://doi.org/10.18653/v1/2022.acl-long.7}
}
```

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