Challenge: Natural language inference (NLI) is a key task for evaluating a model's ability to perform natural language understanding and reasoning.
Approach: They propose to construct pseudo-generated samples using class-specific fine-tuned large language models (LLMs) . they retain all pseudo-labeled samples, but use MixUp to ensure unlabele .
Outcome: The proposed approach achieves competitive accuracy compared to strong baselines for NLI datasets in low-resource settings.

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Learning to Infer from Unlabeled Data: A Semi-supervised Learning Approach for Robust Natural Language Inference (2022.findings-emnlp)

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Challenge: Semi-supervised learning (SSL) is a popular technique for reducing the reliance on human annotations for NLI tasks.
Approach: They propose a way to incorporate unlabeled data into semi-supervised learning (SSL) using a conditional language model, they propose to generate hypotheses for unlabed sentences .
Outcome: The proposed framework significantly improves the performance of four NLI datasets in low-resource settings.
Leveraging Moment Injection for Enhanced Semi-supervised Natural Language Inference with Large Language Models (2025.naacl-short)

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Challenge: Existing studies have used class-specific fine-tuned large language models to generate hypotheses and assign pseudo-labels but discarded many LLM-constructed samples to ensure the quality.
Approach: They propose to leverage LLM-constructed samples by injecting the moments of labeled samples during training to properly adjust the level of noise.
Outcome: The proposed method outperforms strong baselines on multiple NLI datasets in low-resource settings.
MultiMatch: Multihead Consistency Regularization Matching for Semi-Supervised Text Classification (2025.emnlp-main)

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Challenge: **MultiMatch** is a semi-supervised learning (SSL) algorithm that combines co-training and consistency regularization with pseudo-labeling.
Approach: They propose a semi-supervised learning algorithm that integrates co-training and consistency regularization with pseudo-labeling.
Outcome: The proposed algorithm outperforms the second-best approach on 8 out of 10 setups from 5 natural language processing datasets and outperformed the second best by 3.26%.
Industry Scale Semi-Supervised Learning for Natural Language Understanding (2021.naacl-industry)

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Challenge: Obtaining human annotation is expensive and time-consuming process.
Approach: They propose a semi-supervised learning pipeline which leverages millions of unlabeled examples to improve natural language understanding tasks.
Outcome: The proposed pipeline can be used to improve natural language understanding tasks.
Semi-supervised Fine-tuning for Large Language Models (2025.findings-naacl)

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Challenge: Existing LLMs require labeled data, which can be costly in real-world applications.
Approach: They propose a framework that can fully exploit labeled and unlabeled data for LLM fine-tuning . they conducted experiments using GPT-4o-mini and Llama-3.1 on seven general or domain-specific datasets .
Outcome: The proposed framework can fully exploit labeled and unlabeled data for LLM alignment from a propagate-and-select manner.
Rethinking Semi-supervised Learning with Language Models (2023.findings-acl)

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Challenge: Semi-supervised learning (SSL) is a popular setting to make use of unlabelled data . Currently, there are two popular approaches to make effective use of the unlabelled datasets .
Approach: They compare semi-supervised learning (SSL) and task-adaptive pre-training (TAPT) they find TAPT is a stronger and more robust SSL learner, even when using just a few hundred unlabelled samples .
Outcome: The proposed methods improve model performance across different NLP tasks and data sizes.
Combining Deep Generative Models and Multi-lingual Pretraining for Semi-supervised Document Classification (2021.eacl-main)

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Challenge: Semi-supervised learning and multilingual pretraining have been shown to be effective for task-specific labelled data shortages.
Approach: They propose to combine semi-supervised deep generative models and multi-lingual pretraining to form a pipeline for document classification task.
Outcome: The proposed method outperforms state-of-the-art models in low-resource settings across several languages and outperformed existing models in English.
Hy-NLI: a Hybrid system for Natural Language Inference (2020.coling-main)

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Challenge: Recent work has revealed the generalization difficulties of deep models . however, such models fail to perform well on adversarial datasets with challenging linguistic phenomena.
Approach: They propose a hybrid system that learns to identify an NLI pair as linguistically challenging or not . their system uses symbolic or deep learning components to make the final inference decision .
Outcome: The proposed system outperforms existing models on adversarial datasets and on mainstream datasets.
Faithful and Robust LLM-Driven Theorem Proving for NLI Explanations (2025.acl-long)

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Challenge: Recent work has shown that the interaction of large language models (LLMs) with theorem provers (TPs) can help verify and improve the validity of NLI explanations.
Approach: They propose to use logical expressions to guide LLMs in generating structured proof sketches and to use them to improve their accuracy.
Outcome: The proposed strategies improve autoformalisation, syntactic errors and explanation refinement over the state-of-the-art model.
JointMatch: A Unified Approach for Diverse and Collaborative Pseudo-Labeling to Semi-Supervised Text Classification (2023.emnlp-main)

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Challenge: Existing approaches to semi-supervised text classification suffer from pseudo-label bias and error accumulation.
Approach: They propose a pseudo-labeling approach to semi-supervised text classification that unifies ideas from semi-semi-supervised learning and the task of learning with noise.
Outcome: The proposed approach achieves a significant improvement on benchmark datasets even in the extremely-scarce-label setting.

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