Papers by Song Guo

45 papers
GeoGPT4V: Towards Geometric Multi-modal Large Language Models with Geometric Image Generation (2024.emnlp-main)

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Challenge: Existing datasets are too challenging for direct model learning or suffer from misalignment between text and images.
Approach: They propose a pipeline that leverages GPT-4 and GPT4V to generate geometry problems with aligned text and images, facilitating model learning.
Outcome: The proposed pipeline generates 4.9K geometry problems with aligned text and images, facilitating model learning.
An Empirical Study of Iterative Refinements for Non-autoregressive Translation (2025.acl-long)

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Challenge: Iterative non-autoregressive (NAR) models have recently demonstrated impressive performance in varied generation tasks, surpassing the autoregressive Transformer.
Approach: They propose a strategy to conduct efficient refinements without performance declines by using two simple metrics to identify potential problems existing in current refinement processes.
Outcome: The proposed model outperforms the autoregressive Transformer by around one BLEU on average.
ZipVoice-Dialog: Non-Autoregressive Spoken Dialogue Generation with Flow Matching (2026.findings-acl)

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Challenge: Existing autoregressive models for dialogue generation suffer from high latency and stability issues.
Approach: They propose a non-autoregressive (NAR) zero-shot spoken dialogue generation model based on flow-matching.
Outcome: The proposed model outperforms existing models in speech generation due to poor speech intelligibility and turn-taking precision.
LoopCoder: Scaling Code Intelligence via Looped Language Models (2026.findings-acl)

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Challenge: Large language models have mastered syntax-level code generation, but complex algorithmic reasoning remains a challenge.
Approach: They propose a recurrent inductive bias that aligns with the recursive nature of programming logic.
Outcome: The proposed model achieves comparable performance to standard dense models with more parameters.
StoryAnalogy: Deriving Story-level Analogies from Large Language Models to Unlock Analogical Understanding (2023.emnlp-main)

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Challenge: Analogy-making between narratives is crucial for human reasoning . despite its importance, there has been limited research on story analogies .
Approach: They construct a large-scale story-level analogy corpus with 24K story pairs . they find that the tasks are incredibly difficult for large language models such as ChatGPT .
Outcome: The proposed corpus contains 24K story pairs from diverse domains with human annotations on two similarities from the extended Structure-Mapping Theory.
TED-EL: A Corpus for Speech Entity Linking (2024.lrec-main)

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Challenge: Current entity linking tasks rely on textual information, but entities usually exist in textual, audio, and visual contexts in real-world data such as social media and video websites.
Approach: They propose a speech entity linking task to recognize mentions from speech and link them to entities in knowledge bases.
Outcome: The proposed model outperforms the existing models on the TED-EL dataset, scoring an F1 score of 60.68%.
Rethinking Composed Image Retrieval Evaluation: A Fine-Grained Benchmark from Image Editing (2026.acl-long)

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Challenge: Composed Image Retrieval (CIR) is a complex task in multimodal understanding . current CIR benchmarks lack a robust evaluation pipeline and limited query categories .
Approach: They construct a fine-grained CIR benchmark that allows for precise control over modification types and content.
Outcome: The proposed benchmark covers 5,000 high-quality queries structured across five main categories and fifteen subcategories.
Context-aware Watermark with Semantic Balanced Green-red Lists for Large Language Models (2024.emnlp-main)

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Challenge: Recent research suggests that watermarking methods cause degradation of text quality due to semantic disparities between the watermarked text and the unwatermarked text.
Approach: They propose a semantic-aware watermark method that generates a watermark key considering contexts to split a green/red list for watermark injection.
Outcome: The proposed method reduces performance drop due to adding bias on green lists . it also allows green lists to cover almost all semantics .
HomoGraphAdapter: A Homogeneous Graph Neural Network as an Effective Adapter for Vision-Language Models (2025.findings-emnlp)

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Challenge: Existing adaptation methods overlook structural knowledge between text and image modalities or create overly complex graphs containing redundant information for alignment.
Approach: They propose a method to adapt visual models to downstream tasks using text and image modalities.
Outcome: The proposed method improves classification accuracy by 1.51% for 1-shot and 0.74% for 16-shot on 11 datasets.
Code Needs Comments: Enhancing Code LLMs with Comment Augmentation (2024.findings-acl)

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Challenge: Large Language Models (LLMs) require a deep understanding of programming languages and their correlation with natural languages (NLs).
Approach: They propose a data augmentation method that generates comments for existing code and a filtering strategy that filters out code data poorly correlated with natural language.
Outcome: The proposed method outperforms the model trained on the augmented data and the model further trained on data without augmentation on two widely-used programming skill benchmarks.
InsightEval: An Expert-Curated Benchmark for Assessing Insight Discovery in LLM-Driven Data Agents (2026.findings-acl)

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Challenge: Existing frameworks for data analysis and insight exploration are lacking in terms of benchmarks . existing frameworks suffer from format inconsistencies, poorly conceived objectives, and redundant insights.
Approach: They propose a data-curation pipeline to construct a new dataset named InsightEval.
Outcome: The proposed benchmarks highlight prevailing challenges in automated insight discovery and raise key findings to guide future research.
UnitCoder: Scalable Code Synthesis from Pre-training Corpora (2025.emnlp-main)

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Challenge: Large Language Models (LLMs) excel at code understanding and generation, yet code generation remains a challenge.
Approach: They propose a model that supervises pre-training data quality through automatically generated unit tests while ensuring correctness via an iterative fix and refine flow.
Outcome: The proposed model improves performance on a large dataset with high quality pre-training data.
The Silent Saboteur: Imperceptible Adversarial Attacks against Black-Box Retrieval-Augmented Generation Systems (2025.findings-acl)

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Challenge: Existing studies have focused on corpus poisoning, but there are no studies on adversarial attacks on RAG systems.
Approach: They propose a novel imperceptible retrieve-to-generate attack against RAG systems . they propose regenerative reinforcement learning framework that tracks interactions between attacker and target RAG .
Outcome: The proposed framework outperforms existing attacks on factual and non-factual RAG systems with small imperceptible text perturbations.
MIND: From Passive Mimicry to Active Reasoning through Capability-Aware Multi-Perspective CoT Distillation (2026.acl-long)

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Challenge: Existing approaches restrict students to following a single golden rationale and treat different reasoning paths independently, causing suboptimal performance.
Approach: They propose a capability-adaptive framework that transitions distillation from passive mimicry to active cognitive construction and employ a feedback-driven inertia calibration mechanism to align supervision with the student’s current adaptability.
Outcome: Experiments show that the proposed framework achieves state-of-the-art performance on both in-distribution and out-of distribution benchmarks.
TTVS: Boosting Self-Exploring Reinforcement Learning via Test-time Variational Synthesis (2026.findings-acl)

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Challenge: Existing test-time methods are limited in specialized or novel domains where supervision is prohibitively expensive or unavailable.
Approach: They propose a framework that augments training stream from unlabeled test queries.
Outcome: Extensive experiments show TTVS outperforms state-of-the-art RL-based techniques on unlabeled test-time data.
Covariance Matrix-Driven Image Channel Allocation for Multimodal Fake News Detection (2026.findings-acl)

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Challenge: Existing methods focus on designing efficient multimodal fusion frameworks to bridge the semantic gap between images and texts.
Approach: They propose a covariance matrix-driven image channel allocation method that expands the number of original channel maps and assigns importance scores to the expanded channel maps.
Outcome: The proposed method achieves state-of-the-art on three public multimodal fake news detection benchmark datasets.
Noise-Robust Fine-Tuning of Pretrained Language Models via External Guidance (2023.findings-emnlp)

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Challenge: Pretrained Language Models (PLMs) are advanced but data labels are noisy due to the complex annotation process.
Approach: They propose a framework for fine-tuning PLMs using noisy labels that incorporates guidance from Large Language Models like ChatGPT.
Outcome: Experiments on synthetic and real-world noisy datasets show that the proposed framework outperforms the state-of-the-art framework.
IFIR: A Comprehensive Benchmark for Evaluating Instruction-Following in Expert-Domain Information Retrieval (2025.naacl-long)

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Challenge: Current information retrieval systems struggle to handle complex instructions, despite its critical importance . current models struggle to follow complex instructions in real-world applications, resulting in user-specific tasks.
Approach: They propose a benchmark to evaluate instruction-following information retrieval in expert domains.
Outcome: The proposed method improves on existing models and provides valuable insights to guide future advancements in retrieval.
Think How to Think: Mitigating Overthinking with Autonomous Difficulty Cognition in Large Reasoning Models (2026.acl-long)

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Challenge: Recent Large Reasoning Models (LRMs) excel at complex reasoning tasks but often suffer from overthinking.
Approach: They propose a two-stage fine-tuning strategy that progressively inspires LRMs’ difficulty cognition and redundancy cognition of LRM.
Outcome: The proposed model significantly reduces inference costs by over 70% on easy tasks and 40% on complex ones without compromising performance.
AGENTVIGIL: Automatic Black-Box Red-teaming for Indirect Prompt Injection against LLM Agents (2025.findings-emnlp)

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Challenge: AGENTVIGIL is a black-box optimization framework to exploit indirect prompt injection vulnerabilities . indirect prompts compromise the core of LLM agents by manipulating contextual information rather than direct user prompts.
Approach: They propose a black-box optimization framework to exploit indirect prompt injection vulnerabilities . they use a Monte Carlo tree-based algorithm to iteratively refine inputs .
Outcome: The proposed framework achieves 71% and 70% success rates against two public benchmarks .
VizoMem: A Visual-Textual Memory Framework for Efficient Long-Horizon Reasoning (2026.findings-acl)

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Challenge: Existing systems that use long-context modeling incur computational and memory overhead.
Approach: They propose a visual memory framework that pre-rendered text into structured images and stored as visual notes for agentic systems.
Outcome: The proposed system reduces token consumption while preserving effective long-term memory recall.
Improving Deep Embedded Clustering via Learning Cluster-level Representations (2022.coling-1)

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Challenge: Existing efforts to learn meaningful representations at the instance level are limited.
Approach: They propose a deep embedded clustering model with cluster-level representation learning to jointly learn cluster and instance level representations.
Outcome: The proposed model produces meaningful clusters on real-world short text datasets.
CCTVBench: Contrastive Consistency Traffic VideoQA Benchmark for Multimodal LLMs (2026.findings-acl)

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Challenge: Existing Vision-language models are prone to hallucinating nonexistent entities or events and missing subtle but critical visual cues.
Approach: They propose a Traffic VideoQA Benchmark that enforces a single structured decision pattern over each video question quadruple and provides actionable diagnostics that decompose failures into positive omission, positive swap, negative hallucination, mutual-exclusivity violation.
Outcome: The proposed model detects true hazards when an accident occurs, and rejects plausible-but-false hypotheses under near-identical counterfactual scenes.
MERIt: Meta-Path Guided Contrastive Learning for Logical Reasoning (2022.findings-acl)

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Challenge: Existing methods to infer logical relations with annotated training data suffer from over-fitting and poor generalization problems due to the dataset sparsity.
Approach: They propose a MEta-path guided contrastive learning method for logical ReasonIng of text that performs self-supervised pre-training on abundant unlabeled text data.
Outcome: The proposed method outperforms the baselines on two logical reasoning benchmarks with significant improvements.
Ascending the Infinite Ladder: Benchmarking Spatial Deformation Reasoning in Vision-Language Models (2026.acl-long)

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Challenge: Existing benchmarks explore aspects of threedimensional spatial reasoning and visual-language reasoning in dynamic environments, but they are unable to perform well on 3D spatial deformation reasoning.
Approach: They propose to use a ladder competition format to assess the model's spatial deformation reasoning abilities to determine its performance.
Outcome: The proposed framework assesses the performance of Vision-Language Models in spatial deformation reasoning tasks.
Beyond Literal Mapping: Benchmarking and Improving Non-Literal Translation Evaluation (2026.acl-long)

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Challenge: Large Language Models (LLMs) have advanced machine translation (MT) a meta-evaluation dataset focused on non-literal translations is lacking . experimental results show the inaccuracies of traditional MT metrics and the limitations of LLM-as-a-Judge.
Approach: They propose a meta-evaluation framework that leverages sub-agents to evaluate machine translation metrics.
Outcome: The proposed framework improves on the knowledge cutoff and score inconsistency problem.
Multi-Scale Spectral Selection and Entropy-Guided Uncertainty Fusion for Multimodal Rumor Detection (2026.findings-acl)

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Challenge: Existing methods for multimodal content detection fail to capture cross-modal semantic inconsistencies and ignore inherent noise in multimodal features.
Approach: They propose a multimodal rumor detection method based on a frequency domain spectral selection method and entropy-guided uncertainty fusion method to capture cross-modal semantic inconsistencies.
Outcome: The proposed method outperforms state-of-the-art methods in multimodal rumor detection . it shows stronger detection capability and robustness on multiple datasets .
Graph Neural Network Enhanced Retrieval for Question Answering of Large Language Models (2025.naacl-long)

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Challenge: Existing retrieval methods divide reference documents into passages, treating them in isolation. Existing methods only use contiguous passages or keywords.
Approach: They propose a retrieval method that leverages graph neural networks to exploit relatedness between passages to enhance retrieval.
Outcome: The proposed method improves retrieval by exploiting the relatedness between passages.
Stop Hardening Everything: A Training-Free Neuron-Level Defense for Neural Ranking Models (2026.acl-long)

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Challenge: Existing defenses for neural ranking models are data-centric and require retraining and adversarial data generation.
Approach: They propose a model-centric defense that addresses vulnerability at its architectural source without costly retraining or adversarial data generation.
Outcome: The proposed approach outperforms state-of-the-art models on MS MARCO and TREC 19 while maintaining strong performance on clean data.
ChatKBQA: A Generate-then-Retrieve Framework for Knowledge Base Question Answering with Fine-tuned Large Language Models (2024.findings-acl)

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Challenge: Existing KBQA methods address inefficient knowledge retrieval and semantic parsing errors.
Approach: They propose a generatethen-retrieve KBQA framework that generates logical form and replaces entities and relations with an unsupervised retrieval method to improve both generation and retrieval more directly.
Outcome: Experimental results show that ChatKBQA achieves new state-of-the-art performance on standard KBQA datasets, WebQSP, and CWQ.
RLPrompt: Optimizing Discrete Text Prompts with Reinforcement Learning (2022.emnlp-main)

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Challenge: Existing methods for finding the optimal prompt for a task are difficult to optimize.
Approach: They propose an efficient discrete prompt optimization approach with reinforcement learning that generates the optimal discrete stimulus after training with reward.
Outcome: The proposed approach is based on a parameter-efficient policy network that generates the optimal discrete prompt after training with reward.
HAHE: Hierarchical Attention for Hyper-Relational Knowledge Graphs in Global and Local Level (2023.acl-long)

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Challenge: Existing research on HKGs rarely models the graphical and sequential structure of HKG, limiting their representation.
Approach: They propose a Hierarchical Attention model for HKG Embedding that includes global-level and local-level attention to model the graphical structure of HKGs.
Outcome: The proposed model achieves state-of-the-art performance on HKG standard datasets and addresses the issue of HKG multi-position prediction for the first time.
ProxyQA: An Alternative Framework for Evaluating Long-Form Text Generation with Large Language Models (2024.acl-long)

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Challenge: Existing evaluation methods for large language models are labor-intensive and lack efficiency.
Approach: They propose a framework dedicated to assessing long-text generation that includes in-depth human-curated meta-questions spanning various domains . they use a set of proxy-quests with pre-annotated answers to assess the content's quality by incorporating the generated texts as contextual background.
Outcome: The proposed framework assesses the quality of long-text content by matching it with references through human evaluation or automated metrics.
Advancing Abductive Reasoning in Knowledge Graphs through Complex Logical Hypothesis Generation (2024.acl-long)

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Challenge: Abductive reasoning is the process of making educated guesses to provide explanations for observations.
Approach: They propose a task of complex logical hypothesis generation to generate a complex logique hypothesis that can explain a set of observations.
Outcome: The proposed model generates logical hypotheses closer to the reference hypothesis, but not better on unseen observations.
CoRAG: Enhancing Hybrid Retrieval-Augmented Generation through a Cooperative Retriever Architecture (2025.findings-emnlp)

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Challenge: Existing methods only retrieve related documents from local neighbors or subgraphs in the knowledge base, which often miss relevant information located further away from a global view.
Approach: Hybrid-RAG combines textual documents and graph-structured relational information for RAG . existing methods only retrieve related documents from local neighbors or subgraphs in the knowledge base .
Outcome: Hybrid-RAG combines textual documents and graph-structured relational information . existing methods only retrieve related documents from local neighbors or subgraphs in the knowledge base .
What Makes for Good Visual Instructions? Synthesizing Complex Visual Reasoning Instructions for Visual Instruction Tuning (2025.coling-main)

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Challenge: Experimental results show that visual instruction tuning improves performance of Multi-modal Large Language Models (MLLMs) to extend the application scope of Large Language Modells, a surge of work augments LLMs with vision encoders to endow the ability of multi-modal cognition and reasoning.
Approach: They propose a systematic approach to create high-quality visual reasoning instructions using a synthesize-complicate-reformulate paradigm.
Outcome: The proposed method improves performance of MLLMs by 27.86% and 27.60% on MME-Perception and MME Cognition.
CritiQ: Mining Data Quality Criteria from Human Preferences (2025.acl-long)

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Challenge: Existing methods to train language models rely on manual design, perplexity, or careful prompt engineering.
Approach: They propose a method that automatically mines criteria from human preferences for data quality with only 30 human-annotated pairs and performs efficient data selection.
Outcome: The proposed method improves on human-annotated test sets and shows high accuracy on code, math, and logic domains.
Lock on Target! Precision Unlearning via Directional Control (2025.findings-emnlp)

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Challenge: Existing methods for unlearning harmful, sensitive, or outdated knowledge suffer from two critical limitations: (1) collateral forgetting, where erasing target data inadvertently removes related but desirable knowledge, and (2) generality forgetting degrades the model’s general capabilities.
Approach: They propose a method that identifies and leverages a targeted "unlearning direction" in the model's parameter space and selectively updates along this direction.
Outcome: Experiments show that the proposed method achieves state-of-the-art unlearning precision while preserving both related knowledge and general capabilities.
Multi-step Jailbreaking Privacy Attacks on ChatGPT (2023.findings-emnlp)

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Challenge: With the rapid evolution of large language models (LLMs), many downstream NLP tasks can be well solved given appropriate prompts.
Approach: They propose to integrate ChatGPT and Bing GPT3 into their applications to create a set of LLMs that can be used to generate NLP tasks with appropriate prompts.
Outcome: The proposed models can be zero-shot or few-shot learners to solve specified tasks and can even be zero or few shot learners.
LazyEviction: Lagged KV Eviction with Attention Pattern Observation for Efficient Long Reasoning (2026.acl-long)

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Challenge: Existing KV cache compression methods mitigate memory bottlenecks but struggle in long reasoning tasks.
Approach: They propose a lagged eviction framework that prioritizes evicts based on tokens’ recurrence patterns to reduce KV cache by 50% and maintain comparable accuracy.
Outcome: The proposed framework reduces KV cache by 50% 70% while maintaining comparable accuracy, outperforming existing KV baselines.
VF-Eval: Evaluating Multimodal LLMs for Generating Feedback on AIGC Videos (2025.acl-long)

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Challenge: Multimodal large language models (MLLMs) are used for video quality assessment, image captioning and video analysis.
Approach: They propose a benchmark to evaluate MLLMs on AIGC videos using coherence validation, error awareness, error type detection and reasoning evaluation tasks.
Outcome: The proposed benchmark evaluates 13 frontier MLLMs on AIGC videos.
PrivLM-Bench: A Multi-level Privacy Evaluation Benchmark for Language Models (2024.acl-long)

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Challenge: generative large language models (LLMs) exhibit surprising capability and integrate previous tasks into a unified text generation formulation.
Approach: They propose a privacy evaluation benchmark to quantify the privacy leakage of language models.
Outcome: The proposed benchmark compares PPLMs with different privacy implementations to find out how privacy leakage is handled.
A Span-based Multimodal Variational Autoencoder for Semi-supervised Multimodal Named Entity Recognition (2022.emnlp-main)

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Challenge: Existing methods for named entity recognition on social media are not efficient for semi-supervised MNER because of the mismatch between the posted text and image.
Approach: They propose a novel method to fuse the text and image features for multimodal named entity recognition under semi-supervised setting by exploiting modal-specific VAEs.
Outcome: The proposed method outperforms baselines under supervised setting and improves performance with less labeled data than existing semi-supervised methods.
Case2Code: Scalable Synthetic Data for Code Generation (2025.coling-main)

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Challenge: Large Language Models (LLMs) have shown outstanding breakthroughs in code generation.
Approach: They propose a case-to-code induction task that exploits the expressiveness and correctness of programs by incorporating LLMs into their training.
Outcome: The proposed task improves distribution case-to-code induction and various coding generation tasks.
Controllable Memory Usage: Balancing Anchoring and Innovation in Long-Term Human–Agent Interaction (2026.acl-long)

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Challenge: Existing systems that use memory as an "all-or-nothing" approach to memory usage are often static and rely on experience-following tendencies.
Approach: They propose a framework that allows users to dynamically regulate memory reliance by adding context into the model's prompt.
Outcome: The proposed model outperforms prompting and memory masking strategies in multiple scenarios.

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