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Heming Xia

18 accepted papers

2025

Beyond Single Frames: Can LMMs Comprehend Implicit Narratives in Comic Strip?

EMNLP 2025

Large Multimodal Models (LMMs) have demonstrated strong performance on vision-language benchmarks, yet current evaluations predominantly focus on single-image reasoning. In contrast, real-world scenarios always involve understanding sequences of images. A typical scenario is comic strips understandi

Cited by 0SourcePDFScholar
2025

How Far are LLMs from Being Our Digital Twins? A Benchmark for Persona-Based Behavior Chain Simulation

ACL 2025finding

Recently, LLMs have garnered increasing attention across academic disciplines for their potential as human digital twins, virtual proxies designed to replicate individuals and autonomously perform tasks such as decision-making, problem-solving, and reasoning on their behalf.However, current evaluati…

2025

PEToolLLM: Towards Personalized Tool Learning in Large Language Models

ACL 2025finding

Tool learning has emerged as a promising direction by extending Large Language Models’ (LLMs) capabilities with external tools. Existing tool learning studies primarily focus on the general-purpose tool-use capability, which addresses explicit user requirements in instructions. However, they overloo…

2025

SWIFT: On-the-Fly Self-Speculative Decoding for LLM Inference Acceleration

ICLR 2025poster

Speculative decoding (SD) has emerged as a widely used paradigm to accelerate LLM inference without compromising quality. It works by first employing a compact model to draft multiple tokens efficiently and then using the target LLM to verify them in parallel. While this technique has achieved notab…

2025

SpecVLM: Enhancing Speculative Decoding of Video LLMs via Verifier-Guided Token Pruning

EMNLP 2025

Video large language models (Vid-LLMs) have shown strong capabilities in understanding video content. However, their reliance on dense video token representations introduces substantial memory and computational overhead in both prefilling and decoding. To mitigate the information loss of recent vide

2025

TokenSkip: Controllable Chain-of-Thought Compression in LLMs

EMNLP 2025

Chain-of-Thought (CoT) has been proven effective in enhancing the reasoning capabilities of large language models (LLMs). Recent advancements, such as OpenAI’s o1 and DeepSeek-R1, suggest that scaling up the length of CoT sequences during inference could further boost LLM reasoning performance. Howe

2025

Towards Harmonized Uncertainty Estimation for Large Language Models

ACL 2025long

To facilitate robust and trustworthy deployment of large language models (LLMs), it is essential to quantify the reliability of their generations through uncertainty estimation. While recent efforts have made significant advancements by leveraging the internal logic and linguistic features of LLMs t…

Cited by 0SourcePDFScholar
2024

AppBench: Planning of Multiple APIs from Various APPs for Complex User Instruction

EMNLP 2024main

Large Language Models (LLMs) can interact with the real world by connecting with versatile external APIs, resulting in better problem-solving and task automation capabilities. Previous research primarily either focuses on APIs with limited arguments from a single source or overlooks the complex depe…

2024

Can Large Multimodal Models Uncover Deep Semantics Behind Images?

ACL 2024findings

Understanding the deep semantics of images is essential in the era dominated by social media. However, current research works primarily on the superficial description of images, revealing a notable deficiency in the systematic investigation of the inherent deep semantics. In this work, we introduce…

2024

Enhancing Tool Retrieval with Iterative Feedback from Large Language Models

EMNLP 2024finding

Tool learning aims to enhance and expand large language models’ (LLMs) capabilities with external tools, which has gained significant attention recently. Current methods have shown that LLMs can effectively handle a certain amount of tools through in-context learning or fine-tuning. However, in real…

2024

Taking a Deep Breath: Enhancing Language Modeling of Large Language Models with Sentinel Tokens

EMNLP 2024finding

Large language models (LLMs) have shown promising efficacy across various tasks, becoming powerful tools in numerous aspects of human life. However, Transformer-based LLMs suffer a performance degradation when modeling long-term contexts due to they discard some information to reduce computational o…

2024

Unlocking Efficiency in Large Language Model Inference: A Comprehensive Survey of Speculative Decoding

ACL 2024findings

To mitigate the high inference latency stemming from autoregressive decoding in Large Language Models (LLMs), Speculative Decoding has emerged as a novel decoding paradigm for LLM inference. In each decoding step, this method first drafts several future tokens efficiently and then verifies them in p…

2023

Bi-Drop: Enhancing Fine-tuning Generalization via Synchronous sub-net Estimation and Optimization

EMNLP 2023long findings

Pretrained language models have achieved remarkable success in natural language understanding. However, fine-tuning pretrained models on limited training data tends to overfit and thus diminish performance. This paper presents Bi-Drop, a fine-tuning strategy that selectively updates model parameters…

Cited by 0SourceScholar
2023

Enhancing Continual Relation Extraction via Classifier Decomposition

ACL 2023findings

Continual relation extraction (CRE) models aim at handling emerging new relations while avoiding catastrophically forgetting old ones in the streaming data. Though improvements have been shown by previous CRE studies, most of them only adopt a vanilla strategy when models first learn representations…

2023

ImageNetVC: Zero- and Few-Shot Visual Commonsense Evaluation on 1000 ImageNet Categories

EMNLP 2023long findings

Recently, Large Language Models (LLMs) have been serving as general-purpose interfaces, posing a significant demand for comprehensive visual knowledge. However, it remains unclear how well current LLMs and their visually augmented counterparts (VaLMs) can master visual commonsense knowledge. To inve…

Cited by 0SourcecodeScholar
2023

Speculative Decoding: Exploiting Speculative Execution for Accelerating Seq2seq Generation

EMNLP 2023long findings

We propose Speculative Decoding (SpecDec), for the first time ever, to formally study exploiting the idea of speculative execution to accelerate autoregressive (AR) decoding. Speculative Decoding has two innovations: Spec-Drafter -- an independent model specially optimized for efficient and accurate…

Cited by 0SourcecodeScholar
2022

Premise-based Multimodal Reasoning: Conditional Inference on Joint Textual and Visual Clues

ACL 2022long

It is a common practice for recent works in vision language cross-modal reasoning to adopt a binary or multi-choice classification formulation taking as input a set of source image(s) and textual query. In this work, we take a sober look at such an “unconditional” formulation in the sense that no pr…

Cited by 10SourcePDFScholar