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Small language models (SLMs) support efficient deployments on resource-constrained edge devices, but their limited capacity compromises inference performance. Retrieval-augmented generation (RAG) is a promising solution to enhance model…

机器学习 · 计算机科学 2025-04-17 Shangyu Liu , Zhenzhe Zheng , Xiaoyao Huang , Fan Wu , Guihai Chen , Jie Wu

When presented with a binary classification problem where the data exhibits severe class imbalance, most standard predictive methods may fail to accurately model the minority class. We present a model based on Generative Adversarial…

机器学习 · 计算机科学 2022-04-20 Jonathan Gradstein , Moshe Salhov , Yoav Tulpan , Ofir Lindenbaum , Amir Averbuch

Training and fine-tuning deep learning models, especially large language models (LLMs), on limited and imbalanced datasets poses substantial challenges. These issues often result in poor generalization, where models overfit to dominant…

计算与语言 · 计算机科学 2025-01-14 Ashok Choudhary , Cornelius Thiels , Hojjat Salehinejad

Retrieval-augmented generation (RAG) has become a dominant paradigm for grounding large language models (LLMs) with external evidence in knowledge-intensive question answering. A core design choice is how to fuse retrieved samples into the…

计算与语言 · 计算机科学 2026-02-16 Yixin Chen , Ying Xiong , Shangyu Wu , Xiangrui Ke , Nan Guan , Chun Jason Xue

The long-standing challenge of building effective classification models for small and imbalanced datasets has seen little improvement since the creation of the Synthetic Minority Over-sampling Technique (SMOTE) over 20 years ago. Though GAN…

机器学习 · 计算机科学 2022-11-21 Leon O. Guertler , Andri Ashfahani , Anh Tuan Luu

Recent advancement in Generative Adversarial Networks in speech synthesis domain[3],[2] have shown, that it's possible to train GANs [8] in a reliable manner for high quality coherent waveform generation from mel-spectograms. We propose…

音频与语音处理 · 电气工程与系统科学 2020-06-16 Luka Chkhetiani , Levan Bejanidze

In real-world applications of reinforcement learning (RL), noise from inherent stochasticity of environments is inevitable. However, current policy evaluation algorithms, which plays a key role in many RL algorithms, are either prone to…

机器学习 · 计算机科学 2019-06-19 Tadashi Kozuno , Dongqi Han , Kenji Doya

This work aims to employ natural language generation (NLG) to rapidly generate items for English language learning applications: this requires both language models capable of generating fluent, high-quality English, and to control the…

计算与语言 · 计算机科学 2022-11-30 Kevin Stowe , Debanjan Ghosh , Mengxuan Zhao

This paper introduces a promising alternative method for training Generative Adversarial Networks (GANs) on large-scale datasets with clear theoretical guarantees. GANs are typically learned through a minimax game between a generator and a…

计算机视觉与模式识别 · 计算机科学 2025-01-22 Chang Wan , Ke Fan , Xinwei Sun , Yanwei Fu , Minglu Li , Yunliang Jiang , Zhonglong Zheng

Retrieval-augmented generation (RAG) is a promising way to improve large language models (LLMs) for generating more factual, accurate, and up-to-date content. Existing methods either optimize prompts to guide LLMs in leveraging retrieved…

计算与语言 · 计算机科学 2024-12-12 Yutao Zhu , Zhaoheng Huang , Zhicheng Dou , Ji-Rong Wen

Policy gradient methods are among the most effective methods for large-scale reinforcement learning, and their empirical success has prompted several works that develop the foundation of their global convergence theory. However, prior works…

机器学习 · 计算机科学 2020-12-25 Junzi Zhang , Jongho Kim , Brendan O'Donoghue , Stephen Boyd

The natural language generation (NLG) component of a spoken dialogue system (SDS) usually needs a substantial amount of handcrafting or a well-labeled dataset to be trained on. These limitations add significantly to development costs and…

计算与语言 · 计算机科学 2015-08-10 Tsung-Hsien Wen , Milica Gasic , Dongho Kim , Nikola Mrksic , Pei-Hao Su , David Vandyke , Steve Young

It is well known the adversarial optimization of GAN-based image super-resolution (SR) methods makes the preceding SR model generate unpleasant and undesirable artifacts, leading to large distortion. We attribute the cause of such…

图像与视频处理 · 电气工程与系统科学 2023-12-01 Axi Niu , Kang Zhang , Joshua Tian Jin Tee , Trung X. Pham , Jinqiu Sun , Chang D. Yoo , In So Kweon , Yanning Zhang

Recent research in retrieval-augmented generation (RAG) has concentrated on retrieving useful information from candidate documents. However, numerous methodologies frequently neglect the calibration capabilities of large language models…

计算与语言 · 计算机科学 2025-06-23 Guanhua Chen , Yutong Yao , Lidia S. Chao , Xuebo Liu , Derek F. Wong

Large language models (LLMs) augmented with retrieval exhibit robust performance and extensive versatility by incorporating external contexts. However, the input length grows linearly in the number of retrieved documents, causing a dramatic…

计算与语言 · 计算机科学 2024-05-28 Yun Zhu , Jia-Chen Gu , Caitlin Sikora , Ho Ko , Yinxiao Liu , Chu-Cheng Lin , Lei Shu , Liangchen Luo , Lei Meng , Bang Liu , Jindong Chen

Natural Language Generation (NLG) has improved exponentially in recent years thanks to the development of sequence-to-sequence deep learning technologies such as Transformer-based language models. This advancement has led to more fluent and…

Denoising-based generative models, particularly diffusion and flow matching algorithms, have achieved remarkable success. However, aligning their output distributions with complex downstream objectives, such as human preferences,…

机器学习 · 计算机科学 2025-08-29 Luozhijie Jin , Zijie Qiu , Jie Liu , Zijie Diao , Lifeng Qiao , Ning Ding , Alex Lamb , Xipeng Qiu

Low sample efficiency is an enduring challenge of reinforcement learning (RL). With the advent of versatile large language models (LLMs), recent works impart common-sense knowledge to accelerate policy learning for RL processes. However, we…

计算与语言 · 计算机科学 2024-07-08 Fuxiang Zhang , Junyou Li , Yi-Chen Li , Zongzhang Zhang , Yang Yu , Deheng Ye

A common way to extend the memory of large language models (LLMs) is by retrieval augmented generation (RAG), which inserts text retrieved from a larger memory into an LLM's context window. However, the context window is typically limited…

计算与语言 · 计算机科学 2025-02-14 Marc Pickett , Jeremy Hartman , Ayan Kumar Bhowmick , Raquib-ul Alam , Aditya Vempaty

Retrieval-augmented generation (RAG) systems combine large language models (LLMs) with external knowledge retrieval, making them highly effective for knowledge-intensive tasks. A crucial but often under-explored component of these systems…

计算与语言 · 计算机科学 2025-05-19 Jiashuo Sun , Xianrui Zhong , Sizhe Zhou , Jiawei Han