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We consider the situation where the observed sample contains some observations whose class of origin is known (that is, they are classified with respect to the g underlying classes of interest), and where the remaining observations in the…

机器学习 · 统计学 2020-04-15 Geoffrey J. McLachlan , Daniel Ahfock

This paper proposes a Clustering, Labeling, then Augmenting framework that significantly enhances performance in Semi-Supervised Text Classification (SSTC) tasks, effectively addressing the challenge of vast datasets with limited labeled…

计算与语言 · 计算机科学 2024-12-30 Shan Zhong , Jiahao Zeng , Yongxin Yu , Bohong Lin

Ensemble methods are generally regarded to be better than a single model if the base learners are deemed to be "accurate" and "diverse." Here we investigate a semi-supervised ensemble learning strategy to produce generalizable blind image…

计算机视觉与模式识别 · 计算机科学 2021-07-01 Zhihua Wang , Dingquan Li , Kede Ma

We theoretically study semi-supervised clustering in sparse graphs in the presence of pairwise constraints on the cluster assignments of nodes. We focus on bi-cluster graphs, and study the impact of semi-supervision for varying constraint…

数据分析、统计与概率 · 物理学 2011-11-01 Greg Ver Steeg , Aram Galstyan , Armen E. Allahverdyan

In the task of community detection, there often exists some useful prior information. In this paper, a Semi-supervised clustering approach using a new Evidential Label Propagation strategy (SELP) is proposed to incorporate the domain…

社会与信息网络 · 计算机科学 2016-08-01 Kuang Zhou , Arnaud Martin , Quan Pan

Supervised learning needs a huge amount of labeled data, which can be a big bottleneck under the situation where there is a privacy concern or labeling cost is high. To overcome this problem, we propose a new weakly-supervised learning…

机器学习 · 计算机科学 2018-08-16 Han Bao , Gang Niu , Masashi Sugiyama

We propose a novel method for clustering data which is grounded in information-theoretic principles and requires no parametric assumptions. Previous attempts to use information theory to define clusters in an assumption-free way are based…

机器学习 · 计算机科学 2014-02-07 Greg Ver Steeg , Aram Galstyan , Fei Sha , Simon DeDeo

Semi-supervised learning (SSL) uses unlabeled data for training and has been shown to greatly improve performance when compared to a supervised approach on the labeled data available. This claim depends both on the amount of labeled data…

机器学习 · 计算机科学 2019-10-01 Marc Lelarge , Leo Miolane

Semi-supervised learning (SSL) has become important in current data analysis applications, where the amount of unlabeled data is growing exponentially and user input remains limited by logistics and expense. Constrained clustering, as a…

机器学习 · 计算机科学 2018-05-08 Yen-Yun Yu , Shireen Y. Elhabian , Ross T. Whitaker

Cross-modal data matching refers to retrieval of data from one modality, when given a query from another modality. In general, supervised algorithms achieve better retrieval performance compared to their unsupervised counterpart, as they…

计算机视觉与模式识别 · 计算机科学 2019-05-28 Devraj Mandal , Pramod Rao , Soma Biswas

This work presents an unsupervised deep discriminant analysis for clustering. The method is based on deep neural networks and aims to minimize the intra-cluster discrepancy and maximize the inter-cluster discrepancy in an unsupervised…

机器学习 · 计算机科学 2022-06-13 Jinyu Cai , Wenzhong Guo , Jicong Fan

Anomaly detection is being regarded as an unsupervised learning task as anomalies stem from adversarial or unlikely events with unknown distributions. However, the predictive performance of purely unsupervised anomaly detection often fails…

机器学习 · 计算机科学 2014-01-27 Nico Goernitz , Marius Micha Kloft , Konrad Rieck , Ulf Brefeld

A major challenge in Semi-Supervised Learning (SSL) is the limited information available about the class distribution in the unlabeled data. In many real-world applications this arises from the prevalence of long-tailed distributions, where…

机器学习 · 计算机科学 2025-02-04 Khiem Pham , Charles Herrmann , Ramin Zabih

The problem of fully supervised classification is that it requires a tremendous amount of annotated data, however, in many datasets a large portion of data is unlabeled. To alleviate this problem semi-supervised learning (SSL) leverages the…

机器学习 · 计算机科学 2022-07-26 Ehsan Kazemi

Missing values in datasets are common in applied statistics. For regression problems, theoretical work thus far has largely considered the issue of missing covariates as distinct from missing responses. However, in practice, many datasets…

统计理论 · 数学 2026-02-17 Benedict M. Risebrow , Thomas B. Berrett

The incorporation of unlabeled data in regression and classification analysis is an increasing focus of the applied statistics and machine learning literatures, with a number of recent examples demonstrating the potential for unlabeled data…

统计方法学 · 统计学 2009-09-29 Feng Liang , Sayan Mukherjee , Mike West

Multi-view learning is widely applied to real-life datasets, such as multiple omics biological data, but it often suffers from both missing views and missing labels. Prior probabilistic approaches addressed the missing view problem by using…

机器学习 · 计算机科学 2025-08-18 Yiyang Shen , Weiran Wang

Prior works have shown that semi-supervised learning algorithms can leverage unlabeled data to improve over the labeled sample complexity of supervised learning (SL) algorithms. However, existing theoretical analyses focus on regimes where…

机器学习 · 计算机科学 2023-12-01 Alexandru Ţifrea , Gizem Yüce , Amartya Sanyal , Fanny Yang

In this paper, we introduce a neural network framework for semi-supervised clustering (SSC) with pairwise (must-link or cannot-link) constraints. In contrast to existing approaches, we decompose SSC into two simpler classification…

机器学习 · 计算机科学 2020-01-22 Marek Śmieja , Łukasz Struski , Mário A. T. Figueiredo

In some of object recognition problems, labeled data may not be available for all categories. Zero-shot learning utilizes auxiliary information (also called signatures) describing each category in order to find a classifier that can…

计算机视觉与模式识别 · 计算机科学 2016-06-01 Seyed Mohsen Shojaee , Mahdieh Soleymani Baghshah