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Reinforcement Learning with Verifiable Rewards (RLVR) has advanced LLM reasoning, but remains constrained by inefficient exploration under limited rollout budgets, leading to low sampling success and unstable training in complex tasks. We…

机器学习 · 计算机科学 2026-04-21 Yiju Guo , Tianyi Hu , Zexu Sun , Yankai Lin

Prompt optimization (PO) provides a practical way to improve response quality when users lack the time or expertise to manually craft effective prompts. Existing methods typically rely on LLMs' self-generation ability to optimize prompts.…

计算与语言 · 计算机科学 2026-01-13 Zixiao Zhu , Hanzhang Zhou , Zijian Feng , Tianjiao Li , Chua Jia Jim Deryl , Mak Lee Onn , Gee Wah Ng , Kezhi Mao

The goal of this paper is to enhance Text-to-Audio generation at inference, focusing on generating realistic audio that precisely aligns with text prompts. Despite the rapid advancements, existing models often fail to achieve a reliable…

音频与语音处理 · 电气工程与系统科学 2025-09-25 Jaemin Jung , Jaehun Kim , Inkyu Shin , Joon Son Chung

This paper presents a novel approach to enhance image-to-image generation by leveraging the multimodal capabilities of the Large Language and Vision Assistant (LLaVA). We propose a framework where LLaVA analyzes input images and generates…

计算机视觉与模式识别 · 计算机科学 2024-11-13 Zhicheng Ding , Panfeng Li , Qikai Yang , Siyang Li

Text-to-image generation models~(e.g., Stable Diffusion) have achieved significant advancements, enabling the creation of high-quality and realistic images based on textual descriptions. Prompt inversion, the task of identifying the textual…

计算机视觉与模式识别 · 计算机科学 2026-03-06 Mingzhe Li , Kejing Xia , Gehao Zhang , Zhenting Wang , Guanhong Tao , Siqi Pan , Juan Zhai , Shiqing Ma

While text-to-video diffusion models have made significant strides, many still face challenges in generating videos with temporal consistency. Within diffusion frameworks, guidance techniques have proven effective in enhancing output…

计算机视觉与模式识别 · 计算机科学 2025-03-25 Hyelin Nam , Jaemin Kim , Dohun Lee , Jong Chul Ye

Streaming TTS that receives streaming text is essential for interactive systems, yet this scheme faces two major challenges: unnatural prosody due to missing lookahead and long-form collapse due to unbounded context. We propose a…

声音 · 计算机科学 2026-03-09 Changsong Liu , Tianrui Wang , Ye Ni , Yizhou Peng , Eng Siong Chng

Due to the fascinating generative performance of text-to-image diffusion models, growing text-to-3D generation works explore distilling the 2D generative priors into 3D, using the score distillation sampling (SDS) loss, to bypass the data…

计算机视觉与模式识别 · 计算机科学 2024-07-18 Yu-Jie Yuan , Leif Kobbelt , Jiwen Liu , Yuan Zhang , Pengfei Wan , Yu-Kun Lai , Lin Gao

Image diversity remains a fundamental challenge for text-to-image diffusion models. Low-diversity models tend to generate repetitive outputs, increasing sampling redundancy and hindering both creative exploration and downstream…

计算机视觉与模式识别 · 计算机科学 2025-11-26 Debin Meng , Chen Jin , Zheng Gao , Yanran Li , Ioannis Patras , Georgios Tzimiropoulos

Despite recent advances in text-to-image (T2I) models, they often fail to faithfully render all elements of complex prompts, frequently omitting or misrepresenting specific objects and attributes. Test-time optimization has emerged as a…

Large language models (LLMs) have achieved top results in recent machine translation evaluations, but they are also known to be sensitive to errors and perturbations in their prompts. We systematically evaluate how both humanly plausible…

With the advancement in generative language models, the selection of prompts has gained significant attention in recent years. A prompt is an instruction or description provided by the user, serving as a guide for the generative language…

机器学习 · 统计学 2024-05-21 Haoting Zhang , Jinghai He , Rhonda Righter , Zeyu Zheng

Prompt optimization is essential for enhancing the performance of Large Language Models (LLMs) in a range of Natural Language Processing (NLP) tasks, particularly in scenarios of few-shot learning where training examples are incorporated…

计算与语言 · 计算机科学 2024-08-15 Dai Do , Quan Tran , Svetha Venkatesh , Hung Le

This paper focuses on resolving stability hallucinations (e.g., repetitive or omitted speech) in LLM-based Text-to-Speech (TTS) models by improving and leveraging the attention mechanism. First, we analyzed the alignment mechanism between…

声音 · 计算机科学 2026-02-16 ShiMing Wang , ZhiHao Du , Yang Xiang , TianYu Zhao , Han Zhao , Qian Chen , XianGang Li , HanJie Guo , ZhenHua Ling

During both pretraining and fine-tuning, Large Language Models (\textbf{LLMs}) are trained on trillions of tokens of text of widely varying quality. Both phases of training typically involve heuristically filtering out ``low-quality'' or…

机器学习 · 计算机科学 2024-02-12 Alex Havrilla , Maia Iyer

Previous work on augmenting large multimodal models (LMMs) for text-to-image (T2I) generation has focused on enriching the input space of in-context learning (ICL). This includes providing a few demonstrations and optimizing image…

计算与语言 · 计算机科学 2025-01-14 Yongyu Mu , Hengyu Li , Junxin Wang , Xiaoxuan Zhou , Chenglong Wang , Yingfeng Luo , Qiaozhi He , Tong Xiao , Guocheng Chen , Jingbo Zhu

Designing robust algorithms capable of training accurate neural networks on uncurated datasets from the web has been the subject of much research as it reduces the need for time consuming human labor. The focus of many previous research…

计算机视觉与模式识别 · 计算机科学 2022-10-18 Paul Albert , Eric Arazo , Tarun Krishna , Noel E. O'Connor , Kevin McGuinness

Tokenising continuous speech into sequences of discrete tokens and modelling them with language models (LMs) has led to significant success in text-to-speech (TTS) synthesis. Although these models can generate speech with high quality and…

声音 · 计算机科学 2024-08-30 Zehai Tu , Guangyan Zhang , Yiting Lu , Adaeze Adigwe , Simon King , Yiwen Guo

Diffusion models have emerged as a dominant approach for text-to-image generation. Key components such as the human preference alignment and classifier-free guidance play a crucial role in ensuring generation quality. However, their…

计算机视觉与模式识别 · 计算机科学 2025-06-10 Minghao Fu , Guo-Hua Wang , Liangfu Cao , Qing-Guo Chen , Zhao Xu , Weihua Luo , Kaifu Zhang

Large language models (LLMs) have achieved great success across diverse tasks, and fine-tuning is sometimes needed to further enhance generation quality. Most existing methods rely on human supervision or parameter retraining, both of which…

计算与语言 · 计算机科学 2025-05-27 Zhen-Yu Zhang , Jiandong Zhang , Huaxiu Yao , Gang Niu , Masashi Sugiyama