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Metric learning has attracted extensive interest for its ability to provide personalized recommendations based on the importance of observed user-item interactions. Current metric learning methods aim to push negative items away from the…

信息检索 · 计算机科学 2025-12-24 Yan Zhang , Li Deng , Lixin Duan , Sami Azam

Recent advancements in instruction tuning for large language models (LLMs) suggest that a small, high-quality dataset can significantly equip LLMs with instruction-following capabilities, outperforming large datasets often burdened by…

机器学习 · 计算机科学 2025-05-20 Jia Zhang , Chen-Xi Zhang , Yao Liu , Yi-Xuan Jin , Xiao-Wen Yang , Bo Zheng , Yi Liu , Lan-Zhe Guo

Similarity matching and join of time series data streams has gained a lot of relevance in today's world that has large streaming data. This process finds wide scale application in the areas of location tracking, sensor networks, object…

数据库 · 计算机科学 2013-12-11 R H Vishwanath , T V Samartha , K C Srikantaiah , K R Venugopal , L M Patnaik

Data selection plays a crucial role in data-driven decision-making, including in large language models (LLMs), and is typically task-dependent. Properties such as data quality and diversity have been extensively studied and are known to…

机器学习 · 计算机科学 2025-09-30 Yuqing Wang , Shangding Gu

High-quality data plays a critical role in the pretraining and fine-tuning of large language models (LLMs), even determining their performance ceiling to some degree. Consequently, numerous data selection methods have been proposed to…

计算与语言 · 计算机科学 2025-07-08 Jiazheng Li , Lu Yu , Qing Cui , Zhiqiang Zhang , Jun Zhou , Yanfang Ye , Chuxu Zhang

Supervised machine learning based state-of-the-art computer vision techniques are in general data hungry and pose the challenges of not having adequate computing resources and of high costs involved in human labeling efforts. Training data…

计算机视觉与模式识别 · 计算机科学 2018-05-30 Vishal Kaushal , Anurag Sahoo , Khoshrav Doctor , Narasimha Raju , Suyash Shetty , Pankaj Singh , Rishabh Iyer , Ganesh Ramakrishnan

In semi-supervised learning (SSL) for enhancing the performance of graph neural networks (GNNs) with unlabeled data, introducing mutually independent decision factors for cross-validation is regarded as an effective strategy to alleviate…

机器学习 · 计算机科学 2025-08-13 Long Wang , Kai Liu

Autoregressive Large Language Models (AR-LLMs) are widely used in software engineering (SE) but face limitations in processing code structure information and suffer from high inference latency. Diffusion LLMs (DLLMs) offer a promising…

软件工程 · 计算机科学 2025-10-07 Jingyao Zhang , Tianlin Li , Xiaoyu Zhang , Qiang Hu , Bin Shi

Combining large language models during training or at inference time has shown substantial performance gain over component LLMs. This paper presents LLM-TOPLA, a diversity-optimized LLM ensemble method with three unique properties: (i) We…

计算与语言 · 计算机科学 2024-10-08 Selim Furkan Tekin , Fatih Ilhan , Tiansheng Huang , Sihao Hu , Ling Liu

Recent alignment algorithms such as direct preference optimization (DPO) have been developed to improve the safety of large language models (LLMs) by training these models to match human behaviors exemplified by preference data. However,…

计算与语言 · 计算机科学 2025-03-04 Rheeya Uppaal , Apratim Dey , Yiting He , Yiqiao Zhong , Junjie Hu

When selecting data for training large-scale models, standard practice is to filter for examples that match human notions of data quality. Such filtering yields qualitatively clean datapoints that intuitively should improve model behavior.…

机器学习 · 计算机科学 2024-01-24 Logan Engstrom , Axel Feldmann , Aleksander Madry

Diffusion-based Large Language Models (dLLMs) have emerged as a competitive alternative to autoregressive models, offering unique advantages through bidirectional attention and parallel generation paradigms. However, the generation results…

计算与语言 · 计算机科学 2025-10-07 Yifeng Gao , Ziang Ji , Yuxuan Wang , Biqing Qi , Hanlin Xu , Linfeng Zhang

Large language models (LLMs) excel in general tasks but struggle with domain-specific ones, requiring fine-tuning with specific data. With many open-source LLMs available, selecting the best model for fine-tuning downstream tasks is…

计算与语言 · 计算机科学 2025-09-05 Wei Huang , Huang Wei , Yinggui Wang

The composition of pre-training datasets for large language models (LLMs) remains largely undisclosed, hindering transparency and efforts to optimize data quality, a critical driver of model performance. Current data selection methods, such…

计算与语言 · 计算机科学 2025-08-07 Xinlin Zhuang , Jiahui Peng , Ren Ma , Yinfan Wang , Tianyi Bai , Xingjian Wei , Jiantao Qiu , Chi Zhang , Ying Qian , Conghui He

Large language models (LLMs) rely on pretraining on massive and heterogeneous corpora, where training data composition has a decisive impact on training efficiency and downstream generalization under realistic compute and data budget…

计算与语言 · 计算机科学 2026-04-21 Zhuo Chen , Yuxuan Miao , Supryadi , Deyi Xiong

Diffusion large language models (dLLMs) have emerged as a new architecture following auto regressive models. Their denoising process offers a powerful generative advantage, but they present significant challenges in learning and…

机器学习 · 计算机科学 2025-09-24 Ranfei Chen , Ming Chen

The ability of LLMs to represent diverse perspectives is critical as they increasingly impact society. However, recent studies reveal that alignment algorithms such as RLHF and DPO significantly reduce the diversity of LLM outputs. Not only…

计算与语言 · 计算机科学 2025-11-13 Stewart Slocum , Asher Parker-Sartori , Dylan Hadfield-Menell

Large language models(LLMs) have garnered significant attention and demonstrated impressive capabilities in a wide range of applications. However, due to their enormous computational costs, the deployment and application of LLMs are often…

机器学习 · 计算机科学 2025-05-30 Jialong Guo , Xinghao Chen , Yehui Tang , Yunhe Wang

Supervised fine-tuning (SFT) is crucial for aligning Large Language Models (LLMs) with human instructions. The primary goal during SFT is to select a small yet representative subset of training data from the larger pool, such that…

计算与语言 · 计算机科学 2024-12-10 Tingyu Xia , Bowen Yu , Kai Dang , An Yang , Yuan Wu , Yuan Tian , Yi Chang , Junyang Lin

Evaluating LLMs and text-to-image models is a computationally intensive task often overlooked. Efficient evaluation is crucial for understanding the diverse capabilities of these models and enabling comparisons across a growing number of…