Papers by Xia Meng

8 papers
LLMs Assist NLP Researchers: Critique Paper (Meta-)Reviewing (2024.emnlp-main)

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Challenge: a comparative analysis of paper (meta-)reviews by large language models (LLMs) aims to identify and distinguish LLMs from human activities .
Approach: They present a comparative analysis to identify and distinguish LLM activities from human activities.
Outcome: The proposed analysis aims to improve recognition of instances when someone implicitly uses LLMs for reviewing activities.
Beyond Single Frames: Can LMMs Comprehend Implicit Narratives in Comic Strip? (2025.findings-emnlp)

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Challenge: Large Multimodal Models have demonstrated strong performance on vision-language benchmarks, yet current evaluations focus on single-image reasoning.
Approach: STRIPCIPHER is a benchmark designed to evaluate model ability on understanding implicit narratives in silent comics.
Outcome: STRIPCIPHER is a high-quality, human-annotated dataset featuring fine-grained annotations and comprehensive coverage of varying difficulty levels.
Clustering and Ranking: Diversity-preserved Instruction Selection through Expert-aligned Quality Estimation (2024.emnlp-main)

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Challenge: Existing methods for instruction data selection have limitations such as relying on fragile external APIs, being affected by biases in GPT models, or reducing the diversity of the selected instruction dataset.
Approach: They propose an industrial-friendly, expert-aligned and diversity-preserved instruction data selection method: Clustering and Ranking (CaR).
Outcome: The proposed method outperforms Alpaca's existing methods by 32.1% in GPT-4 evaluations.
RankNAS: Efficient Neural Architecture Search by Pairwise Ranking (2021.emnlp-main)

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Challenge: Existing methods require training millions of architectures to estimate the accuracy of the search results.
Approach: They propose a performance ranking method (RankNAS) that uses pairwise ranking and search space pruning to enlarge the search space.
Outcome: The proposed method significantly accelerates NAS through pairwise ranking and search space pruning.
Premise-based Multimodal Reasoning: Conditional Inference on Joint Textual and Visual Clues (2022.acl-long)

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Challenge: Existing work in vision language cross-modal reasoning uses binary or multi-choice classification based on source image and textual query.
Approach: They propose a task where a textual premise is the background presumption on each source image.
Outcome: The proposed task is based on a dataset of 15,360 movie screenshots and human-curated premise templates from 6 pre-defined categories.
UniDrop: A Simple yet Effective Technique to Improve Transformer without Extra Cost (2021.naacl-main)

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Challenge: Existing approaches to improve the performance of natural language processing models are over-parameterized and overfitted.
Approach: They propose an approach to integrate dropout techniques into the training of Transformer models.
Outcome: The proposed approach can achieve 1.5 BLEU improvement on IWSLT14 translation tasks and better accuracy for the classification even using strong pre-trained RoBERTa as backbone.
Modeling Uncertainty in Composed Image Retrieval via Probabilistic Embeddings (2025.acl-long)

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Challenge: Composed Image Retrieval (CIR) combines text and reference images to search for images . metric learning methods that focus on point embeddings fail to capture uncertainty in input data .
Approach: They propose a framework that captures uncertainty in images and queries by Gaussian distributions in latent space rather than fixed points.
Outcome: Experiments show that the proposed framework quantifies quality and semantic uncertainties . it can handle polysemy and ambiguity in search intentions, authors say .
UniCreative: Unifying Long-form Logic and Short-form Sparkle via Reference-Free Reinforcement Learning (2026.findings-acl)

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Challenge: Existing alignment paradigms for creative writing use static reward signals and supervised data.
Approach: They propose a constraint-aware reward model that synthesizes query-specific criteria to provide fine-grained preference judgments.
Outcome: The proposed framework aligns models with human preferences across content quality and structural paradigms without supervised fine-tuning and ground-truth references.

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