Papers by Jiawei Yu

49 papers
Patton: Language Model Pretraining on Text-Rich Networks (2023.acl-long)

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Challenge: Existing models for text-rich networks do not take inter-document structure into account.
Approach: They propose a pretraining framework for a text-rich network using a masked language model and a masking node prediction framework.
Outcome: The proposed model outperforms baselines on four tasks in academic and e-commerce domains.
Grasping the Essentials: Tailoring Large Language Models for Zero-Shot Relation Extraction (2024.emnlp-main)

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Challenge: Existing Relation extraction models require extensive annotated training data, which is costly and labor-intensive to collect.
Approach: They propose a new zero-shot RE task where only relation definitions are provided instead of seen-unseen relation instances.
Outcome: The proposed task significantly improves cost-effective zero-shot performance by large margins.
Seed-Guided Topic Discovery with Out-of-Vocabulary Seeds (2022.naacl-main)

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Challenge: Existing topic models adopt a fully unsupervised setting and their discovered topics may not reflect user preferences well due to their unsupervised nature.
Approach: They propose a framework that allows out-of-vocabulary seeds to be used to find latent topics from text corpora.
Outcome: The proposed framework can find topics that are never seen in the corpus and can benefit from the general knowledge of pre-trained language models.
Weakly-Supervised Aspect-Based Sentiment Analysis via Joint Aspect-Sentiment Topic Embedding (2020.emnlp-main)

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Challenge: Existing methods for aspect-based sentiment analysis of review text use only a few keywords describing each aspect/sentiment without using any labeled examples.
Approach: They propose a weakly-supervised approach for aspect-based sentiment analysis which uses only a few keywords describing each aspect/sentiment without using any labeled examples.
Outcome: The proposed method generates quality joint topics and outperforms baselines significantly on benchmark datasets.
A Comprehensive Survey of Scientific Large Language Models and Their Applications in Scientific Discovery (2024.emnlp-main)

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Challenge: Existing surveys on scientific LLMs focus on one or two fields or a single modality.
Approach: They survey 260 scientific LLMs and examine their architectures and pre-training techniques . they also discuss commonalities and differences between LLM architectures .
Outcome: The proposed model architectures and evaluation techniques are used to improve scientific discovery.
CB-Whisper: Contextual Biasing Whisper Using Open-Vocabulary Keyword-Spotting (2024.lrec-main)

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Challenge: End-to-end automatic speech recognition systems struggle to recognize rare name entities such as personal names, organizations and terminologies that are not frequently encountered in the training data.
Approach: They propose a convolutional neural network-based ASR system that performs open-vocabulary keyword-spotting before the decoder to match the features between the entities and the utterances.
Outcome: The proposed system significantly improves mixed-error-rate (MER) and entity recall compared to the original Whisper model on three internal datasets and two publicly available datasets.
Retrievals Can Be Detrimental: Unveiling the Backdoor Vulnerability of Retrieval-Augmented Diffusion Models (2026.acl-long)

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Challenge: Retrieval-augmented diffusion models (RDMs) have been developed to enhance performance with reduced parameters.
Approach: They propose to integrate retrieval-augmented diffusion models with Retrieval-augmented generation (RAG) that enhances performance with reduced parameters.
Outcome: The proposed framework achieves outstanding attack effects while maintaining benign utility.
Text Classification Using Label Names Only: A Language Model Self-Training Approach (2020.emnlp-main)

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Challenge: Current text classification methods require a large number of labeled documents as training data.
Approach: They propose a model that uses only the label name of each class to train classification models on unlabeled data without using any labeled examples.
Outcome: The proposed model achieves 90% accuracy on four benchmark datasets using label names as the only supervision .
Reverse Modeling in Large Language Models (2025.naacl-short)

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Challenge: Using pre-trained LLMs with reversed text inputs can improve their performance across multiple languages.
Approach: They propose a way to determine whether LLMs can understand reversed text inputs by reversing entire paragraphs or documents at the token level.
Outcome: The proposed model can be used to improve understanding across multiple languages.
CROP: Contextual Region-Oriented Visual Token Pruning (2025.emnlp-main)

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Challenge: Existing VLMs process entire images, leading to excessive visual tokens . redundant image information also introduces a large number of visual token, requiring much higher memory and computation in VLM.
Approach: They propose a framework to prune visual tokens using localization and pruning . they propose CROP to locate local image regions relevant to the query .
Outcome: The proposed framework outperforms existing visual token pruning methods on a wide range of tasks.
RESIN: A Dockerized Schema-Guided Cross-document Cross-lingual Cross-media Information Extraction and Event Tracking System (2021.naacl-demos)

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Challenge: We present a new information extraction system that can construct temporal event graphs from news documents.
Approach: They propose a temporal event graph extraction system that can extract news documents . they extend the system from sentence-level event extraction to cross-document cross-media event extraction .
Outcome: The proposed system can extract temporal event graphs from news documents in multiple languages and multiple data modalities.
Temperature-Centric Investigation of Speculative Decoding with Knowledge Distillation (2024.findings-emnlp)

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Challenge: Speculative decoding is a novel method to expedite inference in autoregressive (large) language models.
Approach: They propose to use a smaller model as a draft model to speculate a block of tokens, which the target model then evaluates for acceptance.
Outcome: The proposed method can be used to accelerate inference in autoregressive (large) language models by using smaller models as draft models to speculate tokens for multiple inference steps.
Fundamental Capabilities of Large Language Models and their Applications in Domain Scenarios: A Survey (2024.acl-long)

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Challenge: Existing benchmark-based evaluations cannot accurately reflect the performance of real-world applications.
Approach: They propose a reliable strategy for domains to choose more robust LLMs for real-world applications.
Outcome: The proposed strategy addresses the challenges faced by domains to choose more robust LLMs for real-world applications.
Inner Thinking Transformer: Leveraging Dynamic Depth Scaling to Foster Adaptive Internal Thinking (2025.acl-long)

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Challenge: Large language models face inherent performance bottlenecks under parameter constraints . challenging tokens induce abrupt gradient spikes across layers, exposing stress points .
Approach: They propose an inner thinking transformer that reimagines layer computations as implicit thinking steps.
Outcome: Empirical results show that ITT outperforms Transformer/Loop variants in 11 benchmarks.
Taxonomy-guided Semantic Indexing for Academic Paper Search (2024.emnlp-main)

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Challenge: Academic paper search often struggles to match underlying academic concepts between queries and documents.
Approach: They propose a framework that extracts key concepts from papers and organizes them as a semantic index guided by an academic taxonomy.
Outcome: The proposed framework can be flexibly employed to enhance existing retrieval frameworks.
DPN-LE: Dual Personality Neuron Localization and Editing for Large Language Models (2026.findings-acl)

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Challenge: Current methods for editing personality traits in large language models can change personalities but reduce performance.
Approach: They propose a novel paradigm for personality editing that locates and edits LLM neurons and enables competitive personality control at inference time.
Outcome: Experiments on LLaMA-3-8B-Instruct and Qwen2.5-7B-instruct show that the proposed approach can improve performance and improve performance.
AutoBreach: Universal and Adaptive Jailbreaking with Efficient Wordplay-Guided Optimization via Multi-LLMs (2025.findings-naacl)

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Challenge: Existing jailbreak research exhibits limitations in universality, validity, and efficiency . Existing methods for jailbreaking LLMs have limited validity and effectiveness .
Approach: They propose a black-box approach that uses wordplay-guided mapping rule sampling to create universal adversarial prompts.
Outcome: The proposed method efficiently identifies security vulnerabilities across various LLMs, achieving an average success rate of over 80% with fewer than 10 queries.
CriticLean: Critic-Guided Reinforcement Learning for Mathematical Formalization (2026.acl-long)

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Challenge: Existing approaches to formalizing mathematical statements face limitations in accuracy, especially in the context of complex, highlevel problems that involve sophisticated mathematical reasoning.
Approach: They propose a CriticLean framework that elevates the role of the critic from a passive validator to an active learning component and introduce a benchmark to measure models’ ability to distinguish semantically correct from incorrect formalizations.
Outcome: The proposed framework outperforms open- and closed-source benchmarks and shows that it significantly outperformed existing models.
VReST: Enhancing Reasoning in Large Vision-Language Models through Tree Search and Self-Reward Mechanism (2025.acl-long)

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Challenge: Large Vision-Language Models (LVLMs) have shown exceptional performance in multimodal tasks, but their effectiveness in complex visual reasoning is constrained.
Approach: They propose a training-free approach that enhances Reasoning in Large Vision-Language Models . they propose integrating Monte Carlo Tree Search and Self-Reward mechanisms into the reasoning tree .
Outcome: The proposed approach surpasses current prompting methods and secures state-of-the-art performance across three multimodal reasoning benchmarks.
CasEE: A Joint Learning Framework with Cascade Decoding for Overlapping Event Extraction (2021.findings-acl)

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Challenge: Existing methods assume that events appear in sentences without overlaps . overlapping event extraction is a challenging task in natural language understanding .
Approach: They propose a joint learning framework with cascade decoding for overlapping event extraction . they sequentially perform type detection, trigger extraction and argument extraction based on the specific former prediction .
Outcome: The proposed framework improves on a public event extraction benchmark . it sequentially performs type detection, trigger extraction and argument extraction .
Transforming Visual Scene Graphs to Image Captions (2023.acl-long)

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Challenge: Existing approaches to generate captions using image captioning are based on multi-head attention (MHA)
Approach: They propose to transform scene graphs into more descriptive captions by using multi-head attention to build a Graph Neural Network (GNN) . they construct a Mixture-of-Expert (MOE)-based decoder where each expert is built on MHA for discriminating the graph embeddings to generate different kinds of words.
Outcome: The proposed framework can generate captions from multiple visual features and objects . it is based on a mixture-of-expert (MOE)-based decoder based upon MHA .
TaxoClass: Hierarchical Multi-Label Text Classification Using Only Class Names (2021.naacl-main)

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Challenge: Hierarchical multi-label text classification (HMTC) aims to assign each text document to a set of relevant classes from a taxonomy.
Approach: They propose to conduct HMTC based on only class surface names as supervision signals to mimic human experts.
Outcome: The proposed framework outperforms the best existing method by 25% on two challenging datasets.
PRMBench: A Fine-grained and Challenging Benchmark for Process-Level Reward Models (2025.acl-long)

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Challenge: Recent large language models (LLMs) have achieved significant performance in complex reasoning tasks such as mathematics and code generation.
Approach: They propose a process-level benchmark specifically designed to assess the fine-grained error detection capabilities of PRMs.
Outcome: The proposed model measures the accuracy, soundness, and sensitivity of 25 models across open-source and closed-source large language models.
Improving Distantly-Supervised Named Entity Recognition with Self-Collaborative Denoising Learning (2021.findings-emnlp)

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Challenge: Named entity recognition (NER) is a method of detecting entity spans and classifying them into predefined categories.
Approach: They propose a method to iteratively perform noisy label refinery by using self-collaborative denoising learning.
Outcome: The proposed learning paradigm exploits reliable labels and communicates with unreliable annotations by collaborative denoising.
On the Transformer Growth for Progressive BERT Training (2021.naacl-main)

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Challenge: Existing methods only conduct network growth in a single dimension, but compound growth operators are beneficial for multiple dimensions.
Approach: They propose a method to train BERT progressively using a Transformer model and explore alternative growth operators in each dimension via controlled comparison.
Outcome: The proposed method speeds up BERT pre-training by 73.6% and 82.2% for the base and large models respectively while achieving comparable performances.
Red Teaming Large Reasoning Models (2026.acl-long)

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Challenge: Large Reasoning Models (LRMs) have emerged as a powerful advancement in multi-step reasoning tasks, but they introduce safety and reliability risks, such as CoT-hijacking and prompt-induced inefficiencies.
Approach: They propose a unified benchmark to assess the trustworthiness of Large Reasoning Models.
Outcome: The proposed benchmark evaluates truthfulness, safety and efficiency on 26 models.
From Language to Driving: A Dual-Loop SLM-Enhanced Framework for Multi-Planner Scheduling via a Domain-Specific Language (2026.acl-long)

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Challenge: Recent large language model-based AD research offers new avenues to address this challenge.
Approach: They propose a small language model (SLM) for high-level semantic reasoning and schedule generation, while an inner loop performs low-level, high-frequency schedule execution and vehicle control.
Outcome: The proposed framework improves instruction completion rates while maintaining high safety and compliance relative to multiple baselines.
Training ELECTRA Augmented with Multi-word Selection (2021.findings-acl)

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Challenge: Existing pre-training methods for NLP tasks require massive computation resources.
Approach: They propose a method that trains a discriminator to detect replaced tokens and select original tokens from candidate sets.
Outcome: The proposed method improves ELECTRA based on multi-task learning on GLUE and SQUAD datasets.
Graph Chain-of-Thought: Augmenting Large Language Models by Reasoning on Graphs (2024.findings-acl)

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Challenge: Existing studies suggest augmenting LLMs with external text corpora to alleviate hallucination problems.
Approach: They propose to augment large language models with text units retrieved from external knowledge corpora to alleviate the issue.
Outcome: The proposed framework outperforms baselines on GRBench with three LLMs and shows that iterative reasoning outperformed the baselines.
A Unified Taxonomy-Guided Instruction Tuning Framework for Entity Set Expansion and Taxonomy Expansion (2025.findings-acl)

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Challenge: Existing studies view entity set expansion, taxonomy expansion, and seed-guided taxonomies as three separate tasks.
Approach: They propose a taxonomy-guided instruction tuning framework to teach a large language model to generate siblings and parents for query entities.
Outcome: The proposed framework outperforms baselines on multiple benchmark datasets.
Reliability-aware Dynamic Feature Composition for Name Tagging (P19-1)

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Challenge: Word embeddings are used to encode semantic information, but their quality is not consistent across the vocabulary due to the long-tail distribution of word frequency.
Approach: They propose a reliability-aware name tagging model that uses word frequency to indicate word quality . they propose to use word frequency-based reliability signals to dynamically select and compose features .
Outcome: The proposed model outperforms the baseline model on OntoNotes 5.0 and up to 5% gain on cross-genre data sets.
Rethinking Entropy Interventions in RLVR: An Entropy Change Perspective (2026.acl-long)

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Challenge: Large Language Models (LLMs) have remarkable reasoning capabilities in complex tasks such as mathematics and coding.
Approach: They propose an entropy-modulation method that adaptively reweighs tokens based on theoretically-estimated entropic variations.
Outcome: The proposed method outperforms state-of-the-art methods in six mathematical reasoning and three coding benchmarks.
Improving Distantly-Supervised Named Entity Recognition with Self-Collaborative Denoising Learning (2021.emnlp-main)

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Challenge: Named entity recognition (NER) is a method of detecting entity spans and classifying them into predefined categories.
Approach: They propose a method to iteratively perform noisy label refinery by using self-collaborative denoising learning.
Outcome: The proposed learning paradigm exploits reliable labels and communicates with unreliable annotations by collaborative denoising.
Topic Taxonomy Expansion via Hierarchy-Aware Topic Phrase Generation (2022.findings-emnlp)

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Challenge: Existing methods for topic taxonomies focus on frequent terms and local topic-subtopic relations, which leads to limited topic term coverage.
Approach: They propose a framework for topic taxonomy expansion that directly generates topic-related terms belonging to new topics.
Outcome: The proposed framework outperforms baseline methods on two real-world text corpora.
Imposing Label-Relational Inductive Bias for Extremely Fine-Grained Entity Typing (N19-1)

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Challenge: Existing entity typing systems exploit type hierarchy provided by KB schema to model label correlations.
Approach: They propose a graph layer that encodes global label co-occurrence statistics and word-level similarities.
Outcome: The proposed model achieves a 15.3% relative F1 improvement on a large dataset with over 10,000 free-form types.
Topic Coverage-based Demonstration Retrieval for In-Context Learning (2025.emnlp-main)

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Challenge: Prior methods to retrieve demonstrations based on embedding similarity or generation probability, resulting in irrelevant or redundant examples.
Approach: They propose a topic coverage-based retrieval framework that selects demonstrations to comprehensively cover topic-level knowledge relevant to both the test input and the model.
Outcome: The proposed framework covers all the necessary knowledge for the test input and the model.
Exploring Better Text Image Translation with Multimodal Codebook (2023.acl-long)

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Challenge: Current studies on text image translation face bottlenecks due to lack of a publicly available dataset and poor optical character recognition.
Approach: They propose a text image translation model with a multimodal codebook and an OCR dataset for Chinese-English translation.
Outcome: The proposed model can associate the image with relevant texts, providing useful supplementary information for translation.
Sparse-to-Dense: A Free Lunch for Lossless Acceleration of Video Understanding in LLMs (2025.acl-short)

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Challenge: Recent advances in Video Large Language Models (Video-LLMs) have achieved exceptional performance on tasks like video question answering and captioning.
Approach: They propose a decoding strategy that leverages sparse top-K attention and dense full attention to accelerate Video-LLMs without loss.
Outcome: The proposed approach achieves a 1.94 walltime speedup in video processing.
Scaling Reasoning, Losing Control: Evaluating Instruction Following in Large Reasoning Models (2026.acl-long)

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Challenge: Recent advances in reasoning-oriented models have demonstrated impressive capabilities in mathematical reasoning, but their ability to adhere to user directives remains underexplored.
Approach: They propose a benchmark to evaluate instruction-following in mathematical reasoning tasks.
Outcome: The proposed model degrades in instruction adherence when generation length increases, but can partially recover obedience, despite increasing generation length.
CoLLiE: Collaborative Training of Large Language Models in an Efficient Way (2023.emnlp-demo)

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Challenge: Large language models (LLMs) are increasingly pivotal in a wide range of tasks . however, the resources required for training these models necessitate efficient solutions .
Approach: They propose a library that facilitates collaborative training of large language models . they use 3D parallelism, parameter-efficient fine-tuning methods and optimizers .
Outcome: The proposed library has proven superior training efficiency in comparison with prevalent solutions in pre-training and fine-tuning scenarios.
SQL Injection Jailbreak: A Structural Disaster of Large Language Models (2025.findings-acl)

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Challenge: Existing methods to jailbreak Large Language Models (LLMs) exploited internal properties or capabilities of the model, such as optimization-based jailbreak methods and methods that leveraged the model’s context-learning abilities.
Approach: They propose a new method which injects jailbreak information into user prompts and induces the model to generate harmful content.
Outcome: The proposed method achieves near 100% success rates on open-source models while incurring lower time costs compared to previous methods.
Large Language Models Can Self-Improve (2023.emnlp-main)

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Challenge: Large Language Models (LLMs) have excellent performance in various tasks, but fine-tuning requires extensive supervision.
Approach: They propose to use a pre-trained Large Language Model to generate rationale-augmented answers for unlabeled questions and fine-tune the LLM using those self-generated solutions as target outputs.
Outcome: The proposed approach improves the general reasoning ability of a 540B-parameter LLM without any ground truth label.
PIEClass: Weakly-Supervised Text Classification with Prompting and Noise-Robust Iterative Ensemble Training (2023.emnlp-main)

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Challenge: Existing methods for text classification use label names of target classes as the only supervision.
Approach: They propose a method that uses keyword-based keyword matching to generate pseudo labels . they propose 'pieclass' module that iteratively trains classifiers and updates pseudo labels.
Outcome: The proposed method achieves better performance than existing strong baselines on seven benchmark datasets and similar performance to fully-supervised classifiers on sentiment classification tasks.
TWEETQA: A Social Media Focused Question Answering Dataset (P19-1)

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Challenge: Social media is becoming an important realtime information source, especially during natural disasters and emergencies.
Approach: They present a large-scale dataset for question answering over social media data . they gather tweets used by journalists and ask human annotators to write questions upon them .
Outcome: The proposed dataset shows that neural models that perform well on formal texts are limited in their performance . the proposed model is still lagging behind human performance with a large margin .
PSP: Pre-trained Soft Prompts for Few-Shot Abstractive Summarization (2022.coling-1)

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Challenge: Experimental results show that our method outperforms full-model tuning in few-shot abstractive summarization tasks.
Approach: They propose a soft prompts architecture with prompt pre-training and prompt fine-tuning paradigm to support few-shot abstractive summarization.
Outcome: The proposed model outperforms Prompt Tuning and Profix-Tuning on CNN/DailyMail and XSum datasets and outperfies Profix Tuning by a large margin.
Root Defense Strategies: Ensuring Safety of LLM at the Decoding Level (2025.acl-long)

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Challenge: Existing methods to detect harmful outputs from prefill-level lacks utilization of the model’s decoding outputs, leading to relatively lower effectiveness and robustness.
Approach: They propose a robust decoding mechanism that corrects harmful queries directly rather than rejecting them outright.
Outcome: The proposed model improves model security without compromising reasoning speed.
Distantly-Supervised Named Entity Recognition with Noise-Robust Learning and Language Model Augmented Self-Training (2021.emnlp-main)

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Challenge: Named entity recognition models require abundant high-quality annotations to train . distant supervision may induce incomplete and noisy labels, making supervised learning ineffective.
Approach: They propose a noise-robust learning scheme for training named entity recognition models using only distantly-labeled data and a self-training method that uses contextualized augmentations created by pre-trained language models.
Outcome: The proposed method outperforms existing supervised NER models on three datasets by significant margins.
Hyperlink-induced Pre-training for Passage Retrieval in Open-domain Question Answering (2022.acl-long)

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Challenge: Existing methods to train dense passage retrieval have a large data gap between upstream and downstream relevance.
Approach: They propose a method to pre-train the dense retriever with the text relevance induced by hyperlinks within Web documents.
Outcome: The proposed method outperforms existing methods under different scenarios and in the open-domain question answering domain.

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