Papers by Chengyu Huang

47 papers
SpanProto: A Two-stage Span-based Prototypical Network for Few-shot Named Entity Recognition (2022.emnlp-main)

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Challenge: Existing methods for few-shot Named Entity Recognition ignore entity boundaries and are time-consuming . a seminal span-based prototypical network solves the problem using two stages: span extraction and mention classification.
Approach: They propose a seminal span-based prototypical network that tackles few-shot NER . they transform sequential tags into a global boundary matrix and use prototypical learning .
Outcome: The proposed model outperforms strong baselines over multiple benchmarks.
Distilling Instruction-following Abilities of Large Language Models with Task-aware Curriculum Planning (2024.findings-emnlp)

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Challenge: Instruction tuning aims to align large language models (LLMs) with open-domain instructions and human-preferred responses.
Approach: They propose a multi-round distillation framework that uses an oracle LLM to select instructions that are difficult for a student LLM.
Outcome: The proposed framework outperforms large language models and user-tuned models on several widely recognized benchmarks and multiple student LLMs.
Thinking with DistilQwen: A Tale of Four Distilled Reasoning and Reward Model Series (2025.emnlp-industry)

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Challenge: In the rapidly evolving landscape of large language models, the need for efficient reasoning models has become increasingly urgent.
Approach: They extend the Qwen model family by introducing four model series specifically designed for industrial applications.
Outcome: The proposed models outperform previous models in multiple benchmarks and provide scalable training and inference functionality on the Alibaba Cloud PAI platform.
PAI-Diffusion: Constructing and Serving a Family of Open Chinese Diffusion Models for Text-to-image Synthesis on the Cloud (2024.acl-demos)

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Challenge: Existing diffusion models fail to address the challenges of generating high-quality images from textual descriptions due to its large vocabulary size and complex character relationships.
Approach: They propose a framework that integrates Chinese diffusion models with Alibaba Cloud's Platform for AI and enables the generation of contextually relevant images.
Outcome: The proposed framework integrates with Alibaba Cloud’s Platform for AI, providing accessible and scalable solutions.
Sharing, Teaching and Aligning: Knowledgeable Transfer Learning for Cross-Lingual Machine Reading Comprehension (2023.findings-emnlp)

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Challenge: X-STA is a new approach for cross-lingual machine reading comprehension . the variation of answer span positions in different languages makes it difficult to transfer knowledge across languages.
Approach: They propose a method that leverages an attentive teacher to subtly transfer the answer spans of the source language to the answer output space of the target.
Outcome: The proposed method outperforms state-of-the-art approaches on three multi-lingual datasets.
DAFNet: Dynamic Auxiliary Fusion for Sequential Model Editing in Large Language Models (2024.findings-acl)

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Challenge: Large language models (LLMs) have shown impressive results, but still suffer from hallucination, i.e., the generation of false information.
Approach: They propose a task of sequential model editing that aims to rectify mistakes continuously.
Outcome: The proposed method significantly outperforms baselines in single-turn and sequential editing.
Conversation Disentanglement with Bi-Level Contrastive Learning (2022.findings-emnlp)

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Challenge: Existing methods focus on pairwise utterance relations but pay inadequate attention to utterant-to-context relation modeling.
Approach: They propose a general disentangle model based on bi-level contrastive learning that brings closer utterances in the same session while encouraging each utterrance to be near its clustered session prototypes in representation space.
Outcome: The proposed model achieves state-of-the-art performance on both settings across public datasets.
KEHRL: Learning Knowledge-Enhanced Language Representations with Hierarchical Reinforcement Learning (2024.lrec-main)

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Challenge: General pre-trained language models (PLMs) leverage relation triples from knowledge graphs (KGs) and integrate external data sources into language models via self-supervised learning.
Approach: They propose to learn Knowledge-Enhanced language representations with Hierarchical Reinforcement Learning (KEHRL) to detect positions for knowledge injection and integrate external knowledge into the model to avoid injecting inaccurate or irrelevant knowledge.
Outcome: The proposed model can detect essential positions in texts for knowledge injection and integrate external knowledge into the model to avoid injecting inaccurate or irrelevant knowledge.
Revisiting and Advancing Chinese Natural Language Understanding with Accelerated Heterogeneous Knowledge Pre-training (2022.emnlp-industry)

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Challenge: Existing knowledge-enhanced pre-trained language models (KEPLMs) can capture internal knowledge, but can't understand external background knowledge.
Approach: They propose to use Chinese knowledge-enhanced pre-trained language models to improve context-aware representations via learning from structured relations in knowledge bases.
Outcome: Experiments show that Chinese knowledge-enhanced pre-trained language models outperform strong baselines over various benchmark NLP tasks and in different model sizes.
Knowledgeable In-Context Tuning: Exploring and Exploiting Factual Knowledge for In-Context Learning (2024.findings-naacl)

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Challenge: Existing studies have explored multiple aspects that affect the performance of large language models (LLMs) such as input-output mapping, extensive data resources, and the ability to train on labeled examples.
Approach: They propose a framework that injects knowledge into LLMs during continual self-supervised pre-training and judiciously selects examples with high knowledge relevance.
Outcome: The proposed framework outperforms baseline models and improves by more than 13% and 7% on text classification and question-answering tasks.
Knowledge-Empowered Representation Learning for Chinese Medical Reading Comprehension: Task, Model and Resources (2021.findings-acl)

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Challenge: MRC is a popular task in NLP, aiming to understand a passage and answer the relevant questions.
Approach: They propose a multi-target machine learning task for the medical domain that predicts answers to medical questions and corresponding support sentences from medical information sources simultaneously.
Outcome: The proposed model outperforms baselines by fusing context-aware and knowledge-awful token representations.
Towards Unified Prompt Tuning for Few-shot Text Classification (2022.findings-emnlp)

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Challenge: Prompt-based fine-tuning has boosted performance of Pre-trained Language Models (PLMs) on few-shot text classification, but PLMs are unfamiliar with prompt-style expressions during pre-training, which limits the few- shot learning performance on downstream tasks.
Approach: They propose a framework for prompt-based fine-tuning that captures prompting semantics from non-target NLP datasets and propose 'Prompt-Options-Verbalizer' for joint prompt learning across different NLP tasks.
Outcome: Experiments show that the proposed framework outperforms state-of-the-art prompt-based fine-tuning frameworks on few-shot text classification tasks.
Better LLM Reasoning via Dual-Play (2026.findings-acl)

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Challenge: Large Language Models (LLMs) have made remarkable progress through Reinforcement Learning with Verifiable Rewards (RLVR) however, external supervision remains a bottleneck for tasks and domains for which supervised data are scarce or non-existent.
Approach: They propose a novel dual-play framework that adversarially trains two models initialized from the same base model.
Outcome: The proposed framework improves the math reasoning performance of large language models.
Enhancing Reasoning Abilities of Small LLMs with Cognitive Alignment (2025.emnlp-main)

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Challenge: Existing methods to distill chain-of-thought (CoT) results from large language reasoning models (LRMs) to small models are ineffective and require substantial amount of annotated data.
Approach: They propose a Critique-Rethink-Verify system for training small language reasoning models that can be critiquized according to the cognitive capabilities of smaller models.
Outcome: The proposed system outperforms other methods on challenging reasoning benchmarks.
TRELM: Towards Robust and Efficient Pre-training for Knowledge-Enhanced Language Models (2024.lrec-main)

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Challenge: Existing methods for incorporating external knowledge into language models do not prioritize learning embeddings for entity-related tokens.
Approach: They propose a framework for incorporating external knowledge into pre-training models that utilize entity-related tokens.
Outcome: The proposed framework reduces pre-training time by 50% and outperforms other KEPLMs in knowledge probing tasks and multiple knowledge-aware language understanding tasks.
Text Augmentation in a Multi-Task View (2021.eacl-main)

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Challenge: a multi-task view of data augmentation allows for a more robust performance than traditional augmentation.
Approach: They propose a multi-task view of data augmentation where original and augmented samples are weighted substantively during training.
Outcome: The proposed model improves on three benchmark text classification datasets.
Meta Fine-Tuning Neural Language Models for Multi-Domain Text Mining (2020.emnlp-main)

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Challenge: Pre-trained neural language models improve learning for various NLP tasks by fine-tuning them on task-specific training sets.
Approach: They propose a meta-learning procedure to fine-tune neural language models on task-specific training sets.
Outcome: The proposed procedure solves a group of similar NLP tasks on a text mining dataset.
Training Language Models to Generate Text with Citations via Fine-grained Rewards (2024.acl-long)

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Challenge: Recent Large Language Models (LLMs) are prone to hallucination and their outputs often contain incorrect or unverifiable claims.
Approach: They propose a training framework using fine-grained rewards to teach LLMs to generate highly supportive and relevant citations while ensuring the correctness of their responses.
Outcome: The proposed training framework outperforms existing methods on QA datasets and surpasses GPT-3.5-turbo on LLaMA-2-7B.
TransPrompt: Towards an Automatic Transferable Prompting Framework for Few-shot Text Classification (2021.emnlp-main)

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Challenge: Recent studies show that prompts improve performance of large pre-trained language models for few-shot text classification.
Approach: They propose a prompt-based framework for few-shot learning that captures cross-task transferable knowledge and uses two de-biasing techniques to make it more task-agnostic and unbiased .
Outcome: The proposed framework outperforms strong baselines over multiple NLP tasks and datasets.
VideoCLIP-XL: Advancing Long Description Understanding for Video CLIP Models (2024.emnlp-main)

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Challenge: Existing studies have shown that CLIP models with short summary texts cannot process extensive textual descriptions due to its text encoder's reliance on positional embeddings with length 77.
Approach: They propose a Contrastive Language-Image Pre-training (CLIP) model which aims to unleash the long-description understanding capability of video CLIP models.
Outcome: The proposed model can learn the distribution of feature space while expanding the long description capability.
Building a Family of Data Augmentation Models for Low-cost LLM Fine-tuning on the Cloud (2025.coling-industry)

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Challenge: Existing models for learning large language models are expensive and difficult to build and fine-tune.
Approach: They propose a family of data augmentation models to improve model fine-tuning efficiency . they leverage powerful LLMs to expand, refine and re-write instructions and responses .
Outcome: The proposed models improve the efficiency of model fine-tuning by leveraging small datasets and quality assessment techniques.
Lifelong Knowledge Editing for LLMs with Retrieval-Augmented Continuous Prompt Learning (2024.emnlp-main)

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Challenge: Existing methods to correct outdated or erroneous knowledge in large language models (LLMs) are slow and cumbersome, resulting in catastrophic knowledge forgetting and degradation of model performance.
Approach: They propose a RetriEval-augmented ContInuous Prompt lEarning method that converts knowledge statements into short and informative continuous prompts, prefixed to the LLM’s input query embedding.
Outcome: The proposed method improves the performance of large language models (LLMs) while maintaining the overall performance of the model.
ARTIST: A Transformer-based Chinese Text-to-Image Synthesizer Digesting Linguistic and World Knowledge (2022.findings-emnlp)

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Challenge: Text-to-Image Synthesis (TIS) is a popular task to convert natural language texts into realistic images.
Approach: They propose a transformer-based Chinese text-to-image synthesizer for high-resolution image generation that incorporates linguistic and relational knowledge facts into the model to ensure better performance without the usage of ultra-large models.
Outcome: The proposed model outperforms existing models in Chinese with linguistic and relational knowledge facts.
From Complex to Simple: Unraveling the Cognitive Tree for Reasoning with Small Language Models (2023.findings-emnlp)

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Challenge: Existing methods to solve complex logical reasoning problems are cumbersome for language models.
Approach: They propose to use iterative methodology to construct a cognitive tree using language models . they propose to generate multiple responses by utilizing in-context examples .
Outcome: The proposed model achieves a performance level comparable to that of GPT-3.5 . the proposed model contains fewer parameters than 5% of the model with 175B parameters .
GSM-Noise: Exploring and Enhancing Large Language Models’ Reasoning under Noisy Inputs (2026.findings-acl)

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Challenge: Large language models struggle when dealing with complex, ill-formed, or noisy inputs . open-source models are less robust, while closed-source ones are more robust .
Approach: They propose to use GSM-Noise to refine inputs before engaging in in-depth analysis to improve LLM robustness under noisy conditions.
Outcome: The proposed model can achieve consistent performance gains under noisy conditions with prompt engineering, supervised finetuning, and reinforcement learning.
On the Role of Long-tail Knowledge in Retrieval Augmented Large Language Models (2024.acl-short)

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Challenge: Existing RAG methods focus on improving the task performance, without fine-grained process of knowledge.
Approach: They propose a method that detects long-tail knowledge in large language models by analyzing retrieved documents and enhancing queries indiscriminately with retrieved information.
Outcome: The proposed method achieves over 4x speedup in average inference time and consistent performance improvement in downstream tasks compared to existing pipelines.
EasyDistill: A Comprehensive Toolkit for Effective Knowledge Distillation of Large Language Models (2025.emnlp-demos)

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Challenge: In this paper, we present EasyDistill, a comprehensive toolkit designed for effective black-box and white-box knowledge distillation (KD) of large language models.
Approach: They propose a toolkit for effective black-box and white-box knowledge distillation (KD) of large language models (LLMs).
Outcome: The framework offers data synthesis, supervised fine-tuning, ranking optimization, and reinforcement learning techniques specifically tailored for KD scenarios.
EasyNLP: A Comprehensive and Easy-to-use Toolkit for Natural Language Processing (2022.emnlp-demos)

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Challenge: Pre-Trained Models (PTMs) have reshaped the development of natural language processing (NLP) but it is not easy to obtain high-performing PTMs without a large amount of labeled training data and deploy them online with fast inference speed.
Approach: They propose to make it easy to build NLP applications with knowledge-enhanced pre-training and knowledge distillation.
Outcome: EasyNLP supports a comprehensive suite of NLP algorithms and features knowledge-enhanced pre-training, knowledge distillation and few-shot learning functionalities.
Uncertainty-aware Parameter-Efficient Self-training for Semi-supervised Language Understanding (2023.findings-emnlp)

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Challenge: Existing methods for pre-trained language models rely on noisy data, which can be expensive if all parameters are updated.
Approach: They propose a self-training framework that incorporates Monte Carlo dropouts into the model and judiciously selects reliable pseudo-labeled examples based on confidence and certainty.
Outcome: The proposed framework improves performance and efficiency over multiple tasks over multiple datasets.
Towards Adaptive Prefix Tuning for Parameter-Efficient Language Model Fine-tuning (2023.acl-short)

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Challenge: Parameter-efficient fine-tuning only optimizes a few task-specific parameters with frozen pre-trained model.
Approach: They propose to optimize a prefix vector inserted into Transformer layers to optimize the prefix . they propose to use a gate mechanism to adjust the prefixed to each layer .
Outcome: The proposed approach improves on the SuperGLUE and NER datasets.
Rapid Diffusion: Building Domain-Specific Text-to-Image Synthesizers with Fast Inference Speed (2023.acl-industry)

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Challenge: Text-to-Image Synthesis (TIS) aims to generate images based on textual inputs . but, current diffusion-based models lack entity knowledge and low inference speed .
Approach: They propose a framework for training and deploying latent diffusion models with rich entity knowledge injected and optimized networks.
Outcome: The proposed framework improves image quality and inference speed and can be used in industrial applications.
DiffChat: Learning to Chat with Text-to-Image Synthesis Models for Interactive Image Creation (2024.findings-acl)

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Challenge: a novel method to align Large Language Models to "chat" with prompt-as-input Text-to-Image Synthesis models is proposed . a user-specified instruction can be used to create a high quality image .
Approach: They propose a method to align Large Language Models to "chat" with prompt-as-input Text-to-Image Synthesis models for interactive image creation.
Outcome: The proposed method can exhibit superior performance than baseline models and strong competitors based on automatic and human evaluations.
HER: Human-like Reasoning and Reinforcement Learning for LLM Role-playing (2026.findings-acl)

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Challenge: Existing models for LLM role-playing lack high-quality datasets with explicit reasoning traces and reliable reward signals aligned with human preferences.
Approach: They propose a unified framework for cognitive-level persona simulation that strictly distinguishes characters’ first-person thinking processes from LLMs’ third-person reasoning.
Outcome: The proposed framework outperforms the Qwen3-32B baseline model and achieves a 30.26% and 14.97% performance on the minimax benchmarks.
Meta-KD: A Meta Knowledge Distillation Framework for Language Model Compression across Domains (2021.acl-long)

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Challenge: Pre-trained language models have been successful in NLP tasks, but their large size and long inference time limit their deployment in real-time applications.
Approach: They propose a meta-teacher model that captures transferable knowledge across domains and passes it to students.
Outcome: The proposed model can distill large teacher models into small student models with guidance from the meta-teacher.
Mock Worlds, Real Skills: Building Small Agentic Language Models with Synthetic Tasks, Simulated Environments, and Rubric-Based Rewards (2026.acl-long)

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Challenge: Existing agentic training data are narrow in task variety and easily solved . real-world APIs lack diversity and are unstable for large-scale reinforcement learning rollout processes.
Approach: They propose a framework that synthesizes diverse tool-use training data and simulates complete environments.
Outcome: The proposed framework synthesizes diverse tool-use training data and simulates complete environments.
KECP: Knowledge Enhanced Contrastive Prompting for Few-shot Extractive Question Answering (2022.emnlp-main)

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Challenge: Extractive Question Answering (EQA) is one of the most essential tasks in Machine Reading Comprehension (MRC).
Approach: They propose a framework that transforms extractive question answering into a non-autoregressive Masked Language Modeling (MLM) generation problem.
Outcome: The proposed framework outperforms state-of-the-art approaches in few-shot learning scenarios by a large margin.
Reasoning with OmniThought: A Large CoT Dataset with Verbosity and Cognitive Difficulty Annotations (2026.acl-long)

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Challenge: Existing resources often fail to provide extensive reasoning problems with coherent CoT processes distilled from multiple teacher models.
Approach: They propose a large-scale dataset featuring 2 million CoT processes generated by multiple powerful LRMs.
Outcome: The proposed dataset features 2 million CoT processes and is validated by multiple powerful LRMs.
FashionKLIP: Enhancing E-Commerce Image-Text Retrieval with Fashion Multi-Modal Conceptual Knowledge Graph (2023.acl-industry)

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Challenge: Recent advances in visual-language pre-trained (VLP) models have greatly improved cross-modal retrieval performance . however, the fine-grained interactions between objects from different modalities are far from well-established . e-commerce domain lacks sufficient training data and fine-granular cross-modulal knowledge .
Approach: They propose a visual-language pre-trained (VLP) image-text retrieval model that integrates cross-modal knowledge into the model to improve performance.
Outcome: The proposed model improves performance on e-commerce image-text retrieval task by a large margin.
CocaCLIP: Exploring Distillation of Fully-Connected Knowledge Interaction Graph for Lightweight Text-Image Retrieval (2023.acl-industry)

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Challenge: Existing methods for text-image retrieval are limited to edge devices and real-time situations due to the substantial indexing and inference time.
Approach: They propose a fully-Connected knowledge interaction graph technique for cross-modal pre-training distillation.
Outcome: The proposed method achieves SOTA performances on the widely-used Flickr30K and MSCOCO benchmarks under the lightweight setting.
XtremeCLIP: Extremely Parameter-efficient Tuning for Low-resource Vision Language Understanding (2023.findings-acl)

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Challenge: Existing approaches to fine-tune visual-language understanding (VLU) require tasks-specific designs and sufficient training data.
Approach: They propose a simple yet efficient paradigm for low-resource Visual Language Understanding (VLU) they reformulate a series of VLU tasks as an open-book affinity-matching problem.
Outcome: The proposed framework outperforms baselines in low-resource settings.
DistilQwen2.5: Industrial Practices of Training Distilled Open Lightweight Language Models (2025.acl-industry)

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Challenge: Existing studies on distilled lightweight LLMs have focused on transferring knowledge from a larger model (the teacher) to a smaller model (sector).
Approach: They propose a family of distilled, lightweight LLMs derived from Qwen2.5 models.
Outcome: Experimental results show that the distilled models have significantly stronger instruction-following capabilities than the original models.
Meta Distant Transfer Learning for Pre-trained Language Models (2021.emnlp-main)

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Challenge: Notable PLMs are available for text classification tasks, but performance of PLM on downstream tasks may be limited by the availability of training set.
Approach: They propose a meta-learning framework to learn the transferable knowledge across tasks using PLMs.
Outcome: The proposed framework outperforms baselines on seven datasets and is task-agnostic and unbiased.
Few-Shot Text Classification with Triplet Networks, Data Augmentation, and Curriculum Learning (2021.naacl-main)

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Challenge: a few-shot text classification task requires a large number of output classes, with few training examples per class.
Approach: They propose a data augmentation technique suitable for training with limited data for few-shot, highly-multiclass text classification scenarios.
Outcome: The proposed technique improves performance on four classification tasks by 3.0% on average.
DCRM: A Heuristic to Measure Response Pair Quality in Preference Optimization (2025.findings-emnlp)

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Challenge: Recent research has attempted to associate preference optimization (PO) performance with the underlying preference datasets.
Approach: They propose a best-of-N2 pairing method that selects response pairs with the highest DCRM to measure the quality of a response pair for PO.
Outcome: The proposed method produces training datasets that can further improve models’ performance on AlpacaEval, MT-Bench, and Arena-Hard over the existing training sets.
AgenticQwen: Training Small Agentic Language Models with Dual Data Flywheels for Industrial-Scale Tool Use (2026.acl-industry)

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Challenge: Modern industrial applications increasingly demand language models capable of multi-step reasoning and tool use in real-world settings.
Approach: They propose a model family that trains via multi-round reinforcement learning on synthetic data and open-source data.
Outcome: The proposed model train on synthetic and open-source data achieves strong performance on multiple agentic benchmarks and in an industrial agent system.
UniPSDA: Unsupervised Pseudo Semantic Data Augmentation for Zero-Shot Cross-Lingual Natural Language Understanding (2024.lrec-main)

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Challenge: Existing studies rely on shallow unsupervised data generated by token surface matching regardless of global context-aware semantics of the surrounding text tokens.
Approach: They propose an Unsupervised Pseudo Semantic Data Augmentation mechanism to enrich training data without human intervention.
Outcome: The proposed model improves on general zero-shot cross-lingual understanding tasks on different languages without human intervention.
BeautifulPrompt: Towards Automatic Prompt Engineering for Text-to-Image Synthesis (2023.emnlp-industry)

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Challenge: Recent text-to-image models require multiple passes of prompt engineering by humans to produce satisfactory results for real-world applications.
Approach: They propose a deep generative model to generate high-quality prompts from raw descriptions using visual feedback.
Outcome: The proposed model produces high-quality prompts from simple raw descriptions . it can be integrated to a cloud-native AI platform to provide better image generation service in the cloud.

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