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相关论文: Improved Consistent Weighted Sampling Revisited

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Due to the superiority in similarity computation and database storage for large-scale multiple modalities data, cross-modal hashing methods have attracted extensive attention in similarity retrieval across the heterogeneous modalities.…

信息检索 · 计算机科学 2020-01-15 Lu Wang , Jie Yang

The combined algorithm selection and hyperparameter tuning (CASH) problem is characterized by large hierarchical hyperparameter spaces. Model-free hyperparameter tuning methods can explore such large spaces efficiently since they are highly…

机器学习 · 计算机科学 2019-11-22 Dimitrios Sarigiannis , Thomas Parnell , Haris Pozidis

Inverse probability of treatment weighting (IPTW) is a popular method for estimating the average treatment effect (ATE). However, empirical studies show that the IPTW estimators can be sensitive to the misspecification of the propensity…

统计方法学 · 统计学 2021-08-04 Jianqing Fan , Kosuke Imai , Inbeom Lee , Han Liu , Yang Ning , Xiaolin Yang

An improved version of the sparse multiway kernel spectral clustering (KSC) is presented in this brief. The original algorithm is derived from weighted kernel principal component (KPCA) analysis formulated within the primal-dual…

机器学习 · 计算机科学 2023-10-23 Mihaly Novak , Rocco Langone , Carlos Alzate , Johan Suykens

Recent unsupervised person re-identification (re-ID) methods achieve high performance by leveraging fine-grained local context. These methods are referred to as part-based methods. However, most part-based methods obtain local contexts…

计算机视觉与模式识别 · 计算机科学 2024-03-04 Jiahao Hong , Jialong Zuo , Chuchu Han , Ruochen Zheng , Ming Tian , Changxin Gao , Nong Sang

Multiple Importance Sampling (MIS) methods approximate moments of complicated distributions by drawing samples from a set of proposal distributions. Several ways to compute the importance weights assigned to each sample have been recently…

统计计算 · 统计学 2016-09-16 Víctor Elvira , Luca Martino , David Luengo , Mónica F. Bugallo

Creating large, good quality labeled data has become one of the major bottlenecks for developing machine learning applications. Multiple techniques have been developed to either decrease the dependence of labeled data (zero/few-shot…

计算与语言 · 计算机科学 2023-02-08 Abhinav Bohra , Huy Nguyen , Devashish Khatwani

Clustering explores meaningful patterns in the non-labeled data sets. Cluster Ensemble Selection (CES) is a new approach, which can combine individual clustering results for increasing the performance of the final results. Although CES can…

机器学习 · 计算机科学 2016-04-26 Muhammad Yousefnezhad , Daoqiang Zhang

Semi-supervised semantic segmentation focuses on the exploration of a small amount of labeled data and a large amount of unlabeled data, which is more in line with the demands of real-world image understanding applications. However, it is…

计算机视觉与模式识别 · 计算机科学 2023-03-28 Bo Dang , Yansheng Li , Yongjun Zhang , Jiayi Ma

The Partitioning Min-Max Weighted Matching (PMMWM) problem is an NP-hard problem that combines the problem of partitioning a group of vertices of a bipartite graph into disjoint subsets with limited size and the classical Min-Max Weighted…

数据结构与算法 · 计算机科学 2022-01-26 Yuxuan Wang , Jinyao Xie , Jiongzhi Zheng , Kun He

Weighted Hamming distance, as a similarity measure between binary codes and binary queries, provides superior accuracy in search tasks than Hamming distance. However, how to efficiently and accurately find $K$ binary codes that have the…

计算机视觉与模式识别 · 计算机科学 2021-08-11 Zhenyu Weng , Yuesheng Zhu , Ruixin Liu

This paper describes the ICS PAS system which took part in CoNLL 2018 shared task on Multilingual Parsing from Raw Text to Universal Dependencies. The system consists of jointly trained tagger, lemmatizer, and dependency parser which are…

计算与语言 · 计算机科学 2020-04-28 Piotr Rybak , Alina Wróblewska

In recent years, attention mechanisms have been exploited in single image super-resolution (SISR), achieving impressive reconstruction results. However, these advancements are still limited by the reliance on simple training strategies and…

计算机视觉与模式识别 · 计算机科学 2025-03-19 Yuxuan Jiang , Chengxi Zeng , Siyue Teng , Fan Zhang , Xiaoqing Zhu , Joel Sole , David Bull

Semantic hashing represents documents as compact binary vectors (hash codes) and allows both efficient and effective similarity search in large-scale information retrieval. The state of the art has primarily focused on learning hash codes…

信息检索 · 计算机科学 2021-03-29 Christian Hansen , Casper Hansen , Jakob Grue Simonsen , Stephen Alstrup , Christina Lioma

This paper establishes the theoretical framework of b-bit minwise hashing. The original minwise hashing method has become a standard technique for estimating set similarity (e.g., resemblance) with applications in information retrieval,…

数据结构与算法 · 计算机科学 2009-10-20 Ping Li , Arnd Christian Konig

We revisit the unrelated machine scheduling problem with the weighted completion time objective. It is known that independent rounding achieves a 1.5 approximation for the problem, and many prior algorithms improve upon this ratio by…

数据结构与算法 · 计算机科学 2024-10-22 Shi Li

Classification with Costly Features (CwCF) is a classification problem that includes the cost of features in the optimization criteria. Individually for each sample, its features are sequentially acquired to maximize accuracy while…

机器学习 · 计算机科学 2024-07-17 Jaromír Janisch , Tomáš Pevný , Viliam Lisý

Multiple importance sampling (MIS) is an increasingly used methodology where several proposal densities are used to approximate integrals, generally involving target probability density functions. The use of several proposals allows for a…

统计理论 · 数学 2022-07-12 Rahul Mukerjee , Víctor Elvira

Randomized clinical trials with time-to-event outcomes have traditionally used the log-rank test followed by the Cox proportional hazards (PH) model to estimate the hazard ratio between the treatment groups. These are valid under the…

统计方法学 · 统计学 2022-06-07 Jiyu Luo , Ronghui Xu

Instance selection (IS) addresses the critical challenge of reducing dataset size while keeping informative characteristics, becoming increasingly important as datasets grow to millions of instances. Current IS methods often struggle with…

机器学习 · 计算机科学 2025-09-25 Zahiriddin Rustamov , Ayham Zaitouny , Nazar Zaki