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Unsupervised clustering is one of the most fundamental challenges in machine learning. A popular hypothesis is that data are generated from a union of low-dimensional nonlinear manifolds; thus an approach to clustering is identifying and…

机器学习 · 计算机科学 2017-12-27 Dejiao Zhang , Yifan Sun , Brian Eriksson , Laura Balzano

Approaching new data can be quite deterrent; you do not know how your categories of interest are realized in it, commonly, there is no labeled data at hand, and the performance of domain adaptation methods is unsatisfactory. Aiming to…

计算与语言 · 计算机科学 2020-10-20 Eyal Shnarch , Leshem Choshen , Guy Moshkowich , Noam Slonim , Ranit Aharonov

Recent research has shown great progress on fine-grained entity typing. Most existing methods require pre-defining a set of types and training a multi-class classifier from a large labeled data set based on multi-level linguistic features.…

计算与语言 · 计算机科学 2016-03-11 Lifu Huang , Jonathan May , Xiaoman Pan , Heng Ji

While image segmentation is crucial in various computer vision applications, such as autonomous driving, grasping, and robot navigation, annotating all objects at the pixel-level for training is nearly impossible. Therefore, the study of…

计算机视觉与模式识别 · 计算机科学 2023-10-26 Cuong Manh Hoang , Byeongkeun Kang

Unsupervised Anomaly Detection (UAD) plays a crucial role in identifying abnormal patterns within data without labeled examples, holding significant practical implications across various domains. Although the individual contributions of…

机器学习 · 计算机科学 2024-06-04 Zeyu Fang , Ming Gu , Sheng Zhou , Jiawei Chen , Qiaoyu Tan , Haishuai Wang , Jiajun Bu

Unsupervised methods are widely used to induce latent semantic structure from large text collections, yet their outputs often contain incoherent, redundant, or poorly grounded clusters that are difficult to validate without labeled data. We…

计算与语言 · 计算机科学 2026-04-21 Tunazzina Islam

Due to abundance of data from multiple modalities, cross-modal retrieval tasks with image-text, audio-image, etc. are gaining increasing importance. Of the different approaches proposed, supervised methods usually give significant…

计算机视觉与模式识别 · 计算机科学 2020-01-03 Devraj Mandal , Pramod Rao , Soma Biswas

In this paper, we study the problem of Novel Class Discovery (NCD). NCD aims at inferring novel object categories in an unlabeled set by leveraging from prior knowledge of a labeled set containing different, but related classes. Existing…

计算机视觉与模式识别 · 计算机科学 2021-09-30 Enrico Fini , Enver Sangineto , Stéphane Lathuilière , Zhun Zhong , Moin Nabi , Elisa Ricci

Novel Class Discovery (NCD) involves identifying new categories within unlabeled data by utilizing knowledge acquired from previously established categories. However, existing NCD methods often struggle to maintain a balance between the…

机器学习 · 计算机科学 2024-07-26 Yue Hou , Xueyuan Chen , He Zhu , Romei Liu , Bowen Shi , Jiaheng Liu , Junran Wu , Ke Xu

Finding meaningful groups, i.e., clusters, in high-dimensional data such as images or texts without labeled data at hand is an important challenge in data mining. In recent years, deep clustering methods have achieved remarkable results in…

机器学习 · 计算机科学 2024-10-15 Collin Leiber , Niklas Strauß , Matthias Schubert , Thomas Seidl

Unsupervised concept identification through clustering, i.e., identification of semantically related words and phrases, is a common approach to identify contextual primitives employed in various use cases, e.g., text dimension reduction,…

计算与语言 · 计算机科学 2021-07-05 Anastasia Zhukova , Felix Hamborg , Karsten Donnay , Bela Gipp

Intent learning, which aims to learn users' intents for user understanding and item recommendation, has become a hot research spot in recent years. However, existing methods suffer from complex and cumbersome alternating optimization,…

信息检索 · 计算机科学 2024-11-12 Yue Liu , Shihao Zhu , Jun Xia , Yingwei Ma , Jian Ma , Xinwang Liu , Shengju Yu , Kejun Zhang , Wenliang Zhong

Recent approaches leveraging multi-modal pre-trained models like CLIP for Unsupervised Domain Adaptation (UDA) have shown significant promise in bridging domain gaps and improving generalization by utilizing rich semantic knowledge and…

计算机视觉与模式识别 · 计算机科学 2025-06-16 Tung-Long Vuong , Hoang Phan , Vy Vo , Anh Bui , Thanh-Toan Do , Trung Le , Dinh Phung

The clustering-based unsupervised relation discovery method has gradually become one of the important methods of open relation extraction (OpenRE). However, high-dimensional vectors can encode complex linguistic information which leads to…

计算与语言 · 计算机科学 2021-09-16 Jun Zhao , Tao Gui , Qi Zhang , Yaqian Zhou

Supervised classification approaches can predict labels for unknown data because of the supervised training process. The success of classification is heavily dependent on the labeled training data. Differently, clustering is effective in…

机器学习 · 计算机科学 2015-02-19 Fangfang Li , Guandong Xu , Longbing Cao

Data discovery - retrieving relevant tables from a data lake in response to user queries - is a fundamental building block for downstream analytics. In practice, data discovery must support different query modalities, including natural…

Supervised person re-identification (re-id) approaches require a large amount of pairwise manual labeled data, which is not applicable in most real-world scenarios for re-id deployment. On the other hand, unsupervised re-id methods rely on…

计算机视觉与模式识别 · 计算机科学 2021-12-28 Wenjing Gao , Minxian Li

Matching identical products present in multiple product feeds constitutes a crucial element of many tasks of e-commerce, such as comparing product offerings, dynamic price optimization, and selecting the assortment personalized for the…

数据库 · 计算机科学 2024-02-16 Alicja Martinek , Szymon Łukasik , Amir H. Gandomi

Clustering is a widely-used data mining tool, which aims to discover partitions of similar items in data. We introduce a new clustering paradigm, \emph{accordant clustering}, which enables the discovery of (predefined) group level insights.…

机器学习 · 计算机科学 2017-04-11 Amit Dhurandhar , Margareta Ackerman , Xiang Wang

Large-scale cross-modal hashing similarity retrieval has attracted more and more attention in modern search applications such as search engines and autopilot, showing great superiority in computation and storage. However, current…

计算机视觉与模式识别 · 计算机科学 2020-01-01 Lu Wang , Jie Yang