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Video transformer naturally incurs a heavier computation burden than a static vision transformer, as the former processes $T$ times longer sequence than the latter under the current attention of quadratic complexity $(T^2N^2)$. The existing…

计算机视觉与模式识别 · 计算机科学 2022-07-26 Hao Zhang , Lechao Cheng , Yanbin Hao , Chong-Wah Ngo

Column Type Annotation (CTA) is a fundamental step towards enabling schema alignment and semantic understanding of tabular data. Existing encoder-only language models achieve high accuracy when fine-tuned on labeled columns, but their…

数据库 · 计算机科学 2025-12-30 Hanze Meng , Jianhao Cao , Rachel Pottinger

Parameter-Efficient Fine-Tuning (PEFT) has become the standard for customising Foundation Models (FMs) to user-specific downstream tasks. However, typical PEFT methods require storing multiple task-specific adapters, creating scalability…

机器学习 · 计算机科学 2024-11-04 Abhinav Jain , Swarat Chaudhuri , Thomas Reps , Chris Jermaine

Prompt-tuning is an emerging strategy to adapt large language models (LLM) to downstream tasks by learning a (soft-)prompt parameter from data. Despite its success in LLMs, there is limited theoretical understanding of the power of…

机器学习 · 计算机科学 2023-06-07 Samet Oymak , Ankit Singh Rawat , Mahdi Soltanolkotabi , Christos Thrampoulidis

In this work, we conduct a systematic analysis of Native Sparse Attention (NSA) and propose targeted improvements that enhance long-context modeling. A key insight is that alternating between local (sliding-window) and global (compression,…

计算与语言 · 计算机科学 2025-11-04 Yuxuan Hu , Jianchao Tan , Jiaqi Zhang , Wen Zan , Pingwei Sun , Yifan Lu , Yerui Sun , Yuchen Xie , Xunliang Cai , Jing Zhang

Random-feature-based attention (RFA) is an efficient approximation of softmax attention with linear runtime and space complexity. However, the approximation gap between RFA and conventional softmax attention is not well studied. Built upon…

机器学习 · 计算机科学 2023-02-10 Lin Zheng , Jianbo Yuan , Chong Wang , Lingpeng Kong

Prefilling computational costs pose a significant bottleneck for Large Language Models (LLMs) and Large Multimodal Models (LMMs) in long-context settings. While token pruning reduces sequence length, prior methods rely on heuristics that…

人工智能 · 计算机科学 2026-05-27 Yujie Chen , Tailai Chen , Yifeng Gao , Zoe Wanying He , Yijue Xu , Shaobo Wang , Linfeng Zhang

Language models struggle to generalize beyond pretraining context lengths, limiting long-horizon reasoning and retrieval. Continued pretraining on long-context data can help but is expensive due to the quadratic scaling of Attention. We…

计算与语言 · 计算机科学 2026-03-19 Sakshi Choudhary , Aditya Chattopadhyay , Luca Zancato , Elvis Nunez , Matthew Trager , Wei Xia , Stefano Soatto

Large reasoning models have achieved remarkable performance through extended chain-of-thought sequences, yet this computational freedom leads to excessive token generation even for simple problems. We present Length-Adaptive Policy…

人工智能 · 计算机科学 2025-08-15 Xingyu Wu , Yuchen Yan , Shangke Lyu , Linjuan Wu , Yiwen Qiu , Yongliang Shen , Weiming Lu , Jian Shao , Jun Xiao , Yueting Zhuang

Transformer-based models have emerged as one of the most widely used architectures for natural language processing, natural language generation, and image generation. The size of the state-of-the-art models has increased steadily reaching…

硬件体系结构 · 计算机科学 2025-01-15 Rya Sanovar , Srikant Bharadwaj , Renee St. Amant , Victor Rühle , Saravan Rajmohan

Recent advancements in diffusion models have notably improved the perceptual quality of generated images in text-to-image synthesis tasks. However, diffusion models often struggle to produce images that accurately reflect the intended…

计算机视觉与模式识别 · 计算机科学 2024-03-12 Yang Zhang , Teoh Tze Tzun , Lim Wei Hern , Tiviatis Sim , Kenji Kawaguchi

We present LLaMA-Adapter, a lightweight adaption method to efficiently fine-tune LLaMA into an instruction-following model. Using 52K self-instruct demonstrations, LLaMA-Adapter only introduces 1.2M learnable parameters upon the frozen…

计算机视觉与模式识别 · 计算机科学 2024-09-20 Renrui Zhang , Jiaming Han , Chris Liu , Peng Gao , Aojun Zhou , Xiangfei Hu , Shilin Yan , Pan Lu , Hongsheng Li , Yu Qiao

Recent text-to-image (T2I) diffusion models show outstanding performance in generating high-quality images conditioned on textual prompts. However, they fail to semantically align the generated images with the prompts due to their limited…

计算机视觉与模式识别 · 计算机科学 2023-12-15 Ruichen Wang , Zekang Chen , Chen Chen , Jian Ma , Haonan Lu , Xiaodong Lin

Existing approaches typically rely on fixed length penalties, but such penalties are hard to tune and fail to adapt to the evolving reasoning abilities of LLMs, leading to suboptimal trade-offs between accuracy and conciseness. To address…

人工智能 · 计算机科学 2025-12-29 Yanhao Li , Lu Ma , Jiaran Zhang , Lexiang Tang , Wentao Zhang , Guibo Luo

Generating rare compositional concepts in text-to-image synthesis remains a challenge for diffusion models, particularly for attributes that are uncommon in the training data. While recent approaches, such as R2F, address this challenge by…

计算机视觉与模式识别 · 计算机科学 2026-03-20 Kwanyoung Lee , Hyunwoo Oh , SeungJu Cha , Sungho Koh , Dong-Jin Kim

Speaker recognition models face challenges in multi-lingual settings due to the entanglement of linguistic information within speaker embeddings. The overlap between vocal traits such as accent, vocal anatomy, and a language's phonetic…

声音 · 计算机科学 2025-06-04 Aditya Srinivas Menon , Raj Prakash Gohil , Kumud Tripathi , Pankaj Wasnik

While RAG demonstrates remarkable capabilities in LLM applications, its effectiveness is hindered by the ever-increasing length of retrieved contexts, which introduces information redundancy and substantial computational overhead. Existing…

计算与语言 · 计算机科学 2025-10-28 Yixiong Fang , Tianran Sun , Yuling Shi , Xiaodong Gu

Large Language Models (LLMs) have made significant strides in natural language processing and generation, yet their ability to handle long-context input remains constrained by the quadratic complexity of attention computation and…

计算与语言 · 计算机科学 2025-06-16 Manlai Liang , Wanyi Huang , Mandi Liu , Huaijun Li , Jinlong Li

State-of-the-art text-to-image diffusion models can produce impressive visuals but may memorize and reproduce training images, creating copyright and privacy risks. Existing prompt perturbations applied at inference time, such as random…

计算机视觉与模式识别 · 计算机科学 2026-03-16 Yunzhuo Chen , Jordan Vice , Naveed Akhtar , Nur Al Hasan Haldar , Ajmal Mian

Paraphrase generation strives to generate high-quality and diverse expressions of a given text, a domain where diffusion models excel. Though SOTA diffusion generation reconciles generation quality and diversity, textual diffusion suffers…

计算与语言 · 计算机科学 2025-01-20 Wei Zou , Ziyuan Zhuang , Xiang Geng , Shujian Huang , Jia Liu , Jiajun Chen