Papers by Yang Xinyu

48 papers
Question Answering as Programming for Solving Time-Sensitive Questions (2023.emnlp-main)

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Challenge: Recent studies show that Large Language Models (LLMs) have shown remarkable intelligence in question answering.
Approach: They propose to reframe the Question Answering task as Programming to overcome this limitation by leveraging LLMs' superior ability in understanding both natural language and programming language.
Outcome: The proposed approach improves on time-sensitive question answering datasets by 14.5% over baselines.
Reinforced Efficient Reasoning via Semantically Diverse Exploration (2026.acl-long)

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Challenge: Existing methods for reinforcement learning with verifiable rewards suffer from limited exploration diversity and inefficient reasoning.
Approach: They propose a method that rewards concise and correct reasoning while penalizing unnecessarily long reasoning chains.
Outcome: Extensive experiments on Qwen and Llama models validate the effectiveness and efficiency of ROSE.
A Two-Agent Game for Zero-shot Relation Triplet Extraction (2024.findings-acl)

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Challenge: Existing methods for relation triplet extraction rely on labeled data and are limited in their applicability.
Approach: They propose a two-agent game approach to deliberate and debate unseen relations by two agents, a generator and an extractor.
Outcome: The proposed method outperforms baseline methods by 6%-16% in F1 scores.
ToolBeHonest: A Multi-level Hallucination Diagnostic Benchmark for Tool-Augmented Large Language Models (2024.emnlp-main)

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Challenge: Currently, tool-augmented large language models (LLMs) only achieve total scores of 45.3 and 37.0, respectively, on a scale of 100.
Approach: They propose a multi-level diagnostic process to assess the LLM's hallucinations through two perspectives: depth and breadth.
Outcome: The proposed diagnostic process assesses the hallucinations of large language models through two perspectives: depth and breadth.
Debiasing the Fine-Grained Classification Task in LLMs with Bias-Aware PEFT (2025.acl-long)

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Challenge: Existing methods to mitigate label biases such as retraining, post-hoc adjustment, and parameter-efficient fine-tuning fail to address prediction propensity and discriminative ability biase.
Approach: They propose a bias-aware optimization framework that incorporates two distinct label balance constraints with a PEFT strategy targeting an intermediate layer to mitigate this issue.
Outcome: The proposed approach outperforms or matches the performance of full-parameter fine-tuning and LoRA, achieving superior results with lower perplexity.
The Mirage of Model Editing: Revisiting Evaluation in the Wild (2025.acl-long)

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Challenge: despite near-perfect results, effectiveness of model editing in real-world applications remains unclear.
Approach: They propose QAEdit and WILD to better reflect real-world use of model editing . they propose a benchmark aligned with widely used question answering datasets and a task-agnostic evaluation framework .
Outcome: The proposed QAEdit benchmark and WILD evaluation framework show that current models perform worse than previously reported.
Are LLM-based Evaluators Confusing NLG Quality Criteria? (2024.acl-long)

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Challenge: Existing studies show that LLMs confuse evaluation criteria, which reduces their reliability.
Approach: They propose a hierarchical classification system for 11 common aspects with corresponding different evaluation criteria.
Outcome: The proposed system is based on 11 common aspects with different evaluation criteria.
SCoder: Progressive Self-Distillation for Bootstrapping Small-Scale Data Synthesizers to Empower Code LLMs (2025.findings-emnlp)

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Challenge: Existing code large language models rely on large-scale instruction data distilled from proprietary LLMs for fine-tuning, which typically incurs high costs.
Approach: They propose an iterative self-distillation approach to bootstrap small-scale LLMs . they use large-scale instruction data distilled from proprietary LLM for fine-tuning .
Outcome: The proposed method reduces reliance on proprietary LLMs and minimizes costs.
How to Enhance Causal Discrimination of Utterances: A Case on Affective Reasoning (2023.emnlp-main)

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Challenge: Existing models excel at capturing semantic correlations within utterance embeddings but fail to determine specific causal relationships.
Approach: They propose to incorporate i.i.d. noise terms into conversation process to build a structural causal model . they propose to use unstructured conversation data to facilitate deep learning .
Outcome: The proposed approach can be implemented in unstructured conversation data and a synthetic dataset that includes i.i.d. noise.
AutoConv: Automatically Generating Information-seeking Conversations with Large Language Models (2023.acl-short)

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Challenge: Existing research on information-seeking conversations is stymied by the lack of training data.
Approach: They propose to use autoconv for synthetic conversation generation to capture the characteristics of the information-seeking process and fine tune an LLM with a few human conversations to generate synthetic conversations with high quality.
Outcome: The proposed model improves on two commonly-used datasets and alleviates the dependence on human annotation.
Multi-Hop Knowledge Editing via Critic-Guided Multi-Agent Reasoning (2026.findings-acl)

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Challenge: Existing knowledge editing methods rely on unidirectional, feed-forward pipelines . a minor retrieval error or logical mismatch at an early hop can become a silent failure .
Approach: They propose a framework for closed-loop post-edit reasoning that uses a Critic agent to verify coherence and step-wise correctness.
Outcome: Experiments on MQuAKE-2002 and MQuADE-hard show that CARE effectively mitigates error propagation . a minor retrieval error or logical mismatch at an early hop can become a silent failure .
Adaptive Feature-based Low-Rank Compression of Large Language Models via Bayesian Optimization (2024.findings-emnlp)

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Challenge: Large language models require a balance between efficiency and performance.
Approach: They propose a low-rank compression technique that reduces non-essential parameters by decomposing weight matrices into products of two low-ranked matrici.
Outcome: The proposed method outperforms existing pruning and low-rank compression techniques in maintaining model performance at the same compression ratio.
Zero-Shot Learners for Natural Language Understanding via a Unified Multiple Choice Perspective (2022.emnlp-main)

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Challenge: Existing approaches to zero-shot learning are format-agnostic and can address new learning tasks without additional training.
Approach: They propose a new paradigm for zero-shot learning that is format agnostic and compatible with any format and applicable to a list of language tasks.
Outcome: The proposed model shows state-of-the-art performance on several benchmarks and produces satisfactory results on tasks such as text classification and commonsense reasoning.
Structure-Unified M-Tree Coding Solver for Math Word Problem (2022.emnlp-main)

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Challenge: Existing models that take into account the binary tree structure of mathematical expressions have achieved better performance, but the output space is non-deterministic.
Approach: They propose a Structure-Unified M-Tree Coding Solver which applies a tree with any M branches to unify the output structures.
Outcome: The proposed model outperforms several state-of-the-art models under similar experimental conditions and performs much better under low-resource conditions.
Quantifying Semantic Emergence in Language Models (2025.acl-long)

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Challenge: Existing evaluation methods for large language models (LLMs) focus on coarse-grained text, not providing interpretations for the behavior of finergrained tokens.
Approach: They propose a quantitative metric to measure large language models’ ability to extract semantics from input tokens.
Outcome: The proposed metric compares the entropy reduction observed for a sequence of tokens and individual tokens.
CultureSynth: A Hierarchical Taxonomy-Guided and Retrieval-Augmented Framework for Cultural Question-Answer Synthesis (2025.findings-emnlp)

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Challenge: Cultural competence is defined as the ability to understand and adapt to multicultural contexts.
Approach: They propose a framework that uses a hierarchical multilingual taxonomy and a Retrieval-Augmented Generation to synthesize culturally relevant question-answer pairs.
Outcome: The proposed framework contains a hierarchical multilingual taxonomy covering 12 primary and 130 secondary topics and a Retrieval-Augmented Generation (RAG)-based methodology leveraging factual knowledge to synthesize culturally relevant question-answer pairs.
Training Language Model to Critique for Better Refinement (2025.findings-acl)

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Challenge: Large language models (LLMs) have remarkable evaluation and critique capabilities, providing insightful feedback and identifying flaws in various tasks.
Approach: They propose a framework to train critic models using refinement signals to generate feedback loops where critiques guide the model in refining its responses.
Outcome: The proposed framework outperforms traditional methods and open-source models in terms of critique quality and refinement outcomes.
MemWeaver: Weaving Hybrid Memories for Traceable Long-Horizon Agentic Reasoning (2026.findings-acl)

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Challenge: Existing methods rely on unstructured retrieval or coarse abstractions, which lead to temporal conflicts, brittle reasoning, and limited traceability.
Approach: They propose a unified memory framework that consolidates long-term agent experiences into three interconnected components that combine structured knowledge and evidence to construct compact yet information-dense contexts for reasoning.
Outcome: The proposed framework significantly improves multi-hop and temporal reasoning accuracy while reducing input context length by over 95% compared to long-context baselines.
When "Correct" Is Not Safe: Can We Trust Functionally Correct Patches Generated by Code Agents? (2026.acl-long)

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Challenge: Code agents are increasingly trusted to autonomously fix bugs on platforms such as GitHub, yet their security evaluation focuses on functional correctness.
Approach: They propose to attack functionally correct yet vulnerable (FCV) patches by combining multi-turn reasoning with tool invocation and environment interaction.
Outcome: The proposed FCV-Attack achieves an attack success rate of 40.7% on GPT-5 Mini + OpenHands.
GRNFormer: A Biologically-Guided Framework for Integrating Gene Regulatory Networks into RNA Foundation Models (2025.findings-acl)

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Challenge: Foundation models for single-cell RNA sequencing ignore biological prior knowledge encoded in gene regulatory relationships and fail to leverage multi-omics signals.
Approach: They propose a framework that integrates multi-scale gene regulatory networks into RNA foundation model training.
Outcome: The proposed framework improves on state-of-the-art models on three downstream tasks . it integrates multi-scale gene regulatory networks (GRNs) from multi-omics data into training .
EduBench: A Comprehensive Benchmarking Dataset for Evaluating Large Language Models in Diverse Educational Scenarios (2026.acl-long)

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Challenge: Existing benchmarks that focus on knowledge-intensive tasks do not reflect diverse educational scenarios.
Approach: They propose a benchmark that incorporates 9 major scenarios and 4,000 educational contexts.
Outcome: The proposed model performs comparable to state-of-the-art large models on the test set.
Local Interpretation of Transformer Based on Linear Decomposition (2023.acl-long)

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Challenge: Existing work on local explanation generation attempts to understand model dynamics on word-level or phraselevel by assigning importance scores on input features.
Approach: They propose to interpret neural networks by linear decomposition by a Transformer model on a single input and a linear decomposing of the output to generate local explanations.
Outcome: The proposed method achieves competitive performance in sentiment classification and machine translation, and fidelity of explanation.
Measuring Your ASTE Models in The Wild: A Diversified Multi-domain Dataset For Aspect Sentiment Triplet Extraction (2023.findings-acl)

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Challenge: Existing ASTE datasets are limited in their ability to represent real-world scenarios, hindering progress in this area.
Approach: They propose a new ASTE dataset that is manually annotated to better fit real-world scenarios by providing more diverse and realistic reviews.
Outcome: The proposed dataset is manually annotated to better fit real-world scenarios.
Rhythm Controllable and Efficient Zero-Shot Voice Conversion via Shortcut Flow Matching (2025.acl-long)

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Challenge: Existing methods focus on disentangling speakers and content, while others focus on preserving the source's prosody.
Approach: They propose a rhythm-controllable and efficient zero-shot voice conversion model that transforms the source speaker’s timbre into an unseen one while retaining speech content.
Outcome: The proposed model adapts the linguistic content duration to the desired speaking style, facilitating the transfer of the target speaker’s rhythm.
MARS: Unleashing the Power of Speculative Decoding via Margin-Aware Verification (2026.findings-acl)

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Challenge: Autoregressive large language models suffer from high inference latency due to memorybandwidth constraints.
Approach: They propose a method that decouples generation and verification by decoupling tokens and a lightweight draft model.
Outcome: The proposed method delivers consistent and significant speedups over state-of-the-art baselines while preserving generation quality across diverse benchmarks.
SIV-Bench: A Video Benchmark for Social Interaction Understanding and Reasoning (2026.findings-acl)

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Challenge: Existing benchmarks for Multimodal Large Language Models (MLLMs) have been lacking due to the rich nature of social interaction.
Approach: They propose a video benchmark to evaluate MLLMs' capabilities across social scene understanding, social state reasoning, and social dynamics prediction.
Outcome: The proposed benchmarks evaluate MLLMs' capabilities across social scene understanding, social state reasoning, and social dynamics prediction tasks.
The Butterfly Effect of Model Editing: Few Edits Can Trigger Large Language Models Collapse (2024.findings-acl)

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Challenge: Even a single edit can trigger model collapse, manifesting as significant performance degradation in various benchmark tasks.
Approach: They propose to use perplexity as a surrogate metric to determine whether an edited model's performance is affected by a single edit.
Outcome: The proposed method shows that even a single edit can cause model collapse, manifesting as significant performance degradation in various benchmark tasks.
HAD: HAllucination Detection Language Models Based on a Comprehensive Hallucination Taxonomy (2026.acl-industry)

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Challenge: relying on large language models for information has raised concerns about reliability and accuracy of outputs.
Approach: They propose a hallucination taxonomy with 11 categories for various NLG tasks and propose HAllucination Detection models which integrate hallucinism detection, span-level identification, and correction into a single inference process.
Outcome: The proposed models outperform baselines on HaluEval, FactCHD, and FaithBench, confirming their robustness and versatility.
Multimodal Affective Analysis Using Hierarchical Attention Strategy with Word-Level Alignment (P18-1)

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Challenge: Existing approaches to classify human affect and subjective information from multiple data sources are limited by the lack of high-level feature associations.
Approach: They propose a hierarchical multimodal architecture with attention and word-level fusion to classify utterance-level sentiment and emotion from text and audio data.
Outcome: The proposed model outperforms state-of-the-art approaches on published datasets and visualizes and interprets synchronized attention over modalities.
MedVerse: Efficient and Reliable Medical Reasoning via DAG-Structured Parallel Execution (2026.acl-long)

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Challenge: Recent advances in large reasoning models have broadened the capabilities of medical artificial intelligence.
Approach: They propose a reasoning framework for complex medical inference that reformulates medical reasoning as a parallelizable directed acyclic graph process based on Petri Net theory.
Outcome: The proposed reasoning framework improves strong general-purpose LLMs by up to 8.9%.
The CRECIL Corpus: a New Dataset for Extraction of Relations between Characters in Chinese Multi-party Dialogues (2022.lrec-1)

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Challenge: Existing datasets focus on relation extraction between two entities in one sentence, and some focus on cross-sentence relationships.
Approach: They propose to use a Chinese multi-party dialogue dataset for automatic extraction of dialogue-based character relationships.
Outcome: The proposed dataset extracts relationships between 140 entities on the CRECIL corpus and another existing relation extraction corpus.
High-order Joint Constituency and Dependency Parsing (2024.lrec-main)

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Challenge: Syntactic parsing aims to reveal how sentences are syntactically structured.
Approach: They propose to produce compatible constituency and dependency trees simultaneously for input sentences . they adopt a much more efficient decoding algorithm and explore joint modeling at training phase .
Outcome: The proposed model significantly improves matching ratio of whole trees compared to separate models . the proposed model adopts a much more efficient decoding algorithm .
Forge: Quality-Aware Reinforcement Learning for NP-Hard Optimization in LLMs (2026.findings-acl)

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Challenge: Existing benchmarks focus on correctness, overlooking optimality . large language models excel at math, coding, logic and puzzles .
Approach: They propose a framework for training and evaluating Large Language Models on NP-hard optimization problems through quality-aware RLVR.
Outcome: The proposed framework outperforms existing benchmarks on math, coding, logic and puzzles.
Do Vision-Language Models Have Internal World Models? Towards an Atomic Evaluation (2025.findings-acl)

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Challenge: Recent studies have evaluated and shown limitations in specific capabilities such as visual understanding, but a systematic evaluation of VLMs’ fundamental WM abilities remains absent.
Approach: They propose a framework that assesses perception and prediction to provide an atomic evaluation of VLMs as WMs.
Outcome: The proposed framework assesses perception and prediction abilities on 15 latest VLMs and compares them to human-level models.
Hybrid Attention based Multimodal Network for Spoken Language Classification (C18-1)

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Challenge: Using linguistic content and vocal characteristics for multimodal deep learning is difficult for computers to interpret human meaning .
Approach: They propose a deep multimodal network with feature attention and modality attention to classify utterance-level speech data.
Outcome: The proposed system achieves state-of-the-art or competitive results on three published multimodal datasets.
MPBoCo: Multimodal Prompt-based Boundary-enhanced Continual Framework for Joint Entity and Relation Extraction (2026.acl-long)

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Challenge: Existing methods struggle to balance real-time adaptability and computational efficiency in continual learning scenarios.
Approach: They propose a Continual Multimodal Entity and Relation Joint Extraction task and a Multimodal Prompt-based Boundary-enhanced Continuum framework that stores task-specific knowledge via learnable multimodal prompts.
Outcome: The proposed framework outperforms baseline methods in real-world scenarios by 5.5% and 7.2%.
Combating Label Sparsity in Short Text Topic Modeling via Nearest Neighbor Augmentation (2024.findings-acl)

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Challenge: Existing topic models suffer from poor performance when applied to short text contents due to the limited length of a single topic.
Approach: They propose a neural short text topic model that augments reconstruction labels with k-nearest documents to complement relevant but unobserved words.
Outcome: The proposed model outperforms the state-of-the-art models on multiple public short-text datasets and can derive high-quality topics and document representations.
DGoT: Dynamic Graph of Thoughts for Scientific Abstract Generation (2024.lrec-main)

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Challenge: Existing methods for generating abstracts involve collecting domain data and training corresponding models to complete the task of text summarization.
Approach: They propose a method to train language models based on domain datasets and a Dynamic Graph of Thought (DGoT) which inherits the advantages of existing GoT prompt approach while reducing model reasoning cost.
Outcome: The proposed method saves the cost of model training and improves reliability due to the hallucination problem of LLMs.
GLARE: Agentic Reasoning for Legal Judgment Prediction (2026.acl-long)

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Challenge: Large language models struggle with fine-grained distinctions between similar charges.
Approach: They propose an agentic legal reasoning framework that actively retrieves external knowledge during decision-making.
Outcome: The proposed model outperforms baseline models on complex cases involving confusing or rare charges on real-world datasets.
TinyAlign: Boosting Lightweight Vision-Language Models by Mitigating Modal Alignment Bottlenecks (2026.findings-acl)

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Challenge: Lightweight Vision-Language Models (VLMs) are indispensable for resource-constrained applications.
Approach: They propose a framework that retrieves context from a memory bank to enhance alignment . they propose EMI-based approach to align vision and language models .
Outcome: The proposed framework reduces training loss, accelerates convergence, and enhances task performance with negligible computational overhead.
Enhancing LLM-Based Social Bot via an Adversarial Learning Framework (2025.emnlp-main)

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Challenge: Social media platforms provide an ideal testbed for large language models that exhibit human-like behavior.
Approach: They propose an LLM-based social **Bot that enhances human-like generative capabilities through an adversarial learning framework.
Outcome: The proposed framework generates human-like content aligned with diverse user profiles . it exhibits strong social responsiveness, more accurately modeling opinion dynamics .
Solving Math Word Problems via Cooperative Reasoning induced Language Models (2023.acl-long)

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Challenge: Large-scale pre-trained language models (PLMs) can be used to solve math word problems, but they lack fast adaptivity as humans.
Approach: They propose a cooperative reasoning-induced PLM for solving the math word problem . they use system 1 as the generator and system 2 as the verifier to generate reasoning paths .
Outcome: The proposed model improves on several mathematical reasoning datasets and achieves 9.6% improvement over baselines.
Physics Reasoner: Knowledge-Augmented Reasoning for Solving Physics Problems with Large Language Models (2025.coling-main)

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Challenge: Existing large language models (LLMs) fail due to lack of knowledge or incorrect knowledge application.
Approach: They propose a knowledge-augmented framework that constructs a formula set to provide explicit physics knowledge and utilizes checklists to guide effective knowledge application.
Outcome: The proposed framework achieves state-of-the-art performance on SciBench with an average accuracy improvement of 5.8%.
Dual-Cluster Memory Agent: Resolving Multi-Paradigm Ambiguity in Optimization Problem Solving (2026.acl-long)

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Challenge: Large Language Models (LLMs) struggle with structural ambiguity in optimization problems, where a single problem admits multiple related but conflicting modeling paradigms, hindering effective solution generation.
Approach: They propose to use memory to leverage historical solutions in a training-free manner to enhance performance by leveraging generalizable guidance knowledge.
Outcome: The proposed agent achieves an average performance improvement of 11%-21% over previous agents.
The Fall of ROME: Understanding the Collapse of LLMs in Model Editing (2024.findings-emnlp)

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Challenge: Recent studies have found that model editing methods can cause large language models to collapse with just a single edit.
Approach: They propose a method that uses prefixed keys and adds prefixes during testing to prevent model collapse.
Outcome: The proposed method prevents model collapse while maintaining effectiveness, the authors show . Rank-One Model Editing (ROME) has been found to cause model collapse with just a single edit .
Polymorphic Universal Transformer (2026.acl-long)

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Challenge: Compute Distribution Skew is a pathological phenomenon in ultra-deep recurrent models . it causes over-smoothing, representation rank collapse, and degraded reasoning performance.
Approach: They propose a dynamic architecture that redefines recursive computation by decoupling parameter count from depth.
Outcome: The proposed model significantly improves representation rank and reasoning robustness while reducing computation by 64.7%.
HoLLMwood: Unleashing the Creativity of Large Language Models in Screenwriting via Role Playing (2024.findings-emnlp)

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Challenge: Generative AI has demonstrated unprecedented creativity in the field of computer vision, yet such phenomena have not been observed in the realm of literary creation.
Approach: They propose a framework for unleashing the creativity of large language models (LLMs) they assign LLMs to different roles involved in real-world scenario, they write .
Outcome: The proposed framework outperforms baselines in terms of coherence, relevance, interestingness and overall quality on automatically generated screenplays.
OmniAlign-V: Towards Enhanced Alignment of MLLMs with Human Preference (2025.acl-long)

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Challenge: Existing open-source multi-modal large language models (MLLMs) focus on enhancing foundational capabilities, leaving a significant gap in human preference alignment.
Approach: They propose a dataset of 200K high-quality training samples featuring diverse images, complex questions, and varied response formats to improve MLLMs’ alignment with human preferences.
Outcome: The proposed dataset of 200K high-quality training samples improves human preference alignment while maintaining or enhancing performance on standard VQA benchmarks.

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