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Taxonomies are an essential knowledge representation, yet most studies on automatic taxonomy construction (ATC) resort to manual evaluation to score proposed algorithms. We argue that automatic taxonomy evaluation (ATE) is just as important…

Computation and Language · Computer Science 2023-07-20 Tianjian Gao , Phillipe Langlais

Label hierarchies widely exist in many vision-related problems, ranging from explicit label hierarchies existed in image classification to latent label hierarchies existed in semantic segmentation. Nevertheless, state-of-the-art methods…

Computer Vision and Pattern Recognition · Computer Science 2019-11-19 Hao-Yun Chen , Li-Huang Tsai , Shih-Chieh Chang , Jia-Yu Pan , Yu-Ting Chen , Wei Wei , Da-Cheng Juan

Hierarchical text classification (HTC) assigns documents to multiple levels of a pre-defined taxonomy. Automated patent subject classification represents one of the hardest HTC scenarios because of domain knowledge difficulty and a huge…

Computation and Language · Computer Science 2025-10-09 Lekang Jiang , Wenjun Sun , Stephan Goetz

This paper proposes integrating semantics-oriented similarity representation into RankingMatch, a recently proposed semi-supervised learning method. Our method, dubbed ReRankMatch, aims to deal with the case in which labeled and unlabeled…

Computer Vision and Pattern Recognition · Computer Science 2021-09-28 Trung Quang Tran , Mingu Kang , Daeyoung Kim

While existing hierarchical text classification (HTC) methods attempt to capture label hierarchies for model training, they either make local decisions regarding each label or completely ignore the hierarchy information during inference. To…

Information Retrieval · Computer Science 2020-06-19 Yuning Mao , Jingjing Tian , Jiawei Han , Xiang Ren

Training semantic segmentation models on multiple datasets has sparked a lot of recent interest in the computer vision community. This interest has been motivated by expensive annotations and a desire to achieve proficiency across multiple…

Computer Vision and Pattern Recognition · Computer Science 2022-10-27 Petra Bevandić , Siniša Šegvić

Hierarchical open-set classification handles previously unseen classes by assigning them to the most appropriate high-level category in a class taxonomy. We extend this paradigm to the semi-supervised setting, enabling the use of…

Computer Vision and Pattern Recognition · Computer Science 2026-01-26 Erik Wallin , Fredrik Kahl , Lars Hammarstrand

Hierarchical text classification (HTC) is a complex subtask under multi-label text classification, characterized by a hierarchical label taxonomy and data imbalance. The best-performing models aim to learn a static representation by…

Computation and Language · Computer Science 2024-02-23 Vidit Jain , Mukund Rungta , Yuchen Zhuang , Yue Yu , Zeyu Wang , Mu Gao , Jeffrey Skolnick , Chao Zhang

Class incremental learning refers to a special multi-class classification task, in which the number of classes is not fixed but is increasing with the continual arrival of new data. Existing researches mainly focused on solving catastrophic…

Machine Learning · Computer Science 2019-05-21 Xu Zhang , Yang Yao , Baile Xu , Lekun Mao , Furao Shen , Jian Zhao , Qingwei Lin

One of the best ways for developers to test and improve their skills in a fun and challenging way are programming challenges, offered by a plethora of websites. For the inexperienced ones, some of the problems might appear too challenging,…

Machine Learning · Computer Science 2019-11-28 Bianca Iancu , Gabriele Mazzola , Kyriakos Psarakis , Panagiotis Soilis

Knowledge tagging for questions plays a crucial role in contemporary intelligent educational applications, including learning progress diagnosis, practice question recommendations, and course content organization. Traditionally, these…

Computation and Language · Computer Science 2024-06-21 Hang Li , Tianlong Xu , Jiliang Tang , Qingsong Wen

Classification algorithms in machine learning often assume a flat label space. However, most real world data have dependencies between the labels, which can often be captured by using a hierarchy. Utilizing this relation can help develop a…

Machine Learning · Computer Science 2020-06-09 Palash Goyal , Shalini Ghosh

In many large-scale classification problems, classes are organized in a known hierarchy, typically represented as a tree expressing the inclusion of classes in superclasses. We introduce a loss for this type of supervised hierarchical…

Computer Vision and Pattern Recognition · Computer Science 2024-11-26 Nicolas Urbani , Sylvain Rousseau , Yves Grandvalet , Leonardo Tanzi

Hierarchical classification aims to sort the object into a hierarchical structure of categories. For example, a bird can be categorized according to a three-level hierarchy of order, family, and species. Existing methods commonly address…

Computer Vision and Pattern Recognition · Computer Science 2023-11-01 Renzhen Wang , De cai , Kaiwen Xiao , Xixi Jia , Xiao Han , Deyu Meng

To address semi-supervised learning from both labeled and unlabeled data, we present a novel meta-learning scheme. We particularly consider that labeled and unlabeled data share disjoint ground truth label sets, which can be seen tasks like…

Computer Vision and Pattern Recognition · Computer Science 2020-08-26 Yun-Chun Chen , Chao-Te Chou , Yu-Chiang Frank Wang

Hierarchical knowledge structures are ubiquitous across real-world domains and play a vital role in organizing information from coarse to fine semantic levels. While such structures have been widely used in taxonomy systems, biomedical…

Machine Learning · Computer Science 2026-03-10 Yunhui Liu , Yongchao Liu , Yinfeng Chen , Chuntao Hong , Tao Zheng , Tieke He

We study a variant of domain adaptation for named-entity recognition where multiple, heterogeneously tagged training sets are available. Furthermore, the test tag-set is not identical to any individual training tag-set. Yet, the relations…

Computation and Language · Computer Science 2019-06-20 Genady Beryozkin , Yoel Drori , Oren Gilon , Tzvika Hartman , Idan Szpektor

Safety-critical applications such as autonomous driving require robust 3D environment perception algorithms capable of handling diverse and ambiguous surroundings. The predictive performance of classification models is heavily influenced by…

Computer Vision and Pattern Recognition · Computer Science 2024-08-02 Mariella Dreissig , Simon Ruehle , Florian Piewak , Joschka Boedecker

Classification aids software development activities by organizing requirements in classes for easier access and retrieval. The majority of requirements classification research has, so far, focused on binary or multi-class classification.…

Software Engineering · Computer Science 2025-04-24 Waleed Abdeen , Michael Unterkalmsteiner , Krzysztof Wnuk , Alexandros Chirtoglou , Christoph Schimanski , Heja Goli

This paper presents a hierarchical classification system that automatically categorizes a scholarly publication using its abstract into a three-tier hierarchical label set (discipline, field, subfield) in a multi-class setting. This system…

Digital Libraries · Computer Science 2024-07-26 Susie Xi Rao , Peter H. Egger , Ce Zhang