Hierarchical Classification

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3 papers in the last four weeks, against 2 the four weeks before. 0.0% of all new papers.

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GeoGAT: Bidirectional Temporal Sampling Meets Hierarchical Graph Attention for Global Video Geo-localization
Sep 30, 2026Junchao Cui, Xuanzi Ma, Wenqi Shi +4Hierarchical Classification
Information Engineering University, Zhengzhou, China · Zhengzhou University, Zhengzhou, China
Evaluating Hierarchy-Aware Deep Learning for the Recognition of Tironian Notes
Sep 28, 2026Yule Kang, Thomas Gorges, Janne van der Loop +4Hierarchical Classification Optical Character Recognition
Pattern Recognition Lab, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany · Buchwissenschaft, Johannes Gutenberg-Universität Mainz, Germany · Abteilung Handschriften und Historische Drucke, Staatsbibliothek zu Berlin, Germany +1
HemaHier: Chain-Conditioned Ordinal Hierarchies for Lineage-Aware Bone-Marrow Cytology
Sep 14, 2026Afshin Bozorgpour, Peter Schüffler, Edgar Jost +1Computational Pathology Hierarchical Classification
Faculty of Informatics and Data Science, University of Regensburg, Germany · Institute of Pathology, TUM School of Medicine and Health, Technical University of Munich, Germany · Munich Center for Machine Learning, Germany +4
Hierarchical Channel Stacking: A Structured Decision Framework for AI-Generated Image Detection
Aug 27, 2026Saifullah Shoaib, Akash Borigi, Rupendra Lekkala +5Hierarchical Classification Explainable Image Classification
Missouri University of Science & Technology, Rolla MO 65409, USA · University of Houston, Houston TX 77479, USA · Aug Cranium AI, Inc., Short Hills NJ 07078, USA
Label Granularity Skew in Federated Learning with Hierarchical Image Classification
Aug 10, 2026Jaeheon Kim, Hokeun Kim, Bong Jun ChoiHierarchical Classification Federated Fine-Tuning
School of Computer Science and Engineering, Soongsil University, Seoul, Republic of Korea · School of Computing and Augmented Intelligence, Arizona State University, Tempe, United States
SCALE: Scientific Concept Aggregation via LLMs and Embeddings for Fine-Grained Taxonomy Extension
Aug 7, 2026Daniele Raimondi, Feichi Lu, Oliver Grun +2Hierarchical Classification Knowledge Representation
MDPI Data Intelligence Team, MDPI AG, Grosspeteranlage 5, CH-4052 Basel, Switzerland
Open-World Hierarchical Perception: Taxonomic Abstraction over Class-Agnostic Proposals for the Safe Handling of Out-of-Vocabulary Road Objects
Aug 4, 2026Felix SchallerOpen-Vocabulary Object Detection Hierarchical Classification
Dubai, UAE / Munich, Germany
Clinically-Grounded Hierarchical Classification for Consistent Chest X-ray Interpretation
Aug 4, 2026Jong Hak Moon, Minjun Kim, Minjun KimHierarchical Classification Chest X-Ray Classification
Yeji X, Seoul, South Korea
Deep learning-based hierarchical insect classification using camera trap imagery
Jul 30, 2026Zaki Mahfoud, Juan A. Chiavassa, Simon Walther +2Hierarchical Classification Wildlife Monitoring
Weihenstephan-Triesdorf University of Applied Sciences, Department of Sustainable Agriculture and Energy Systems, Professorship of Smart Farming, Am Staudengarten 1, 85354 Freising, Germany · Weihenstephan-Triesdorf University of Applied Sciences, Institute for Biomass Research, Neuseser Str. 1, 91732 Merkendorf, Germany · Weihenstephan-Triesdorf University of Applied Sciences, Department of Sustainable Agriculture and Energy Systems, Professorship of Digital Farm Management, Am Staudengarten 1, 85354 Freising, Germany
FlexiGrad: Adaptive Gradient Modulation for Hierarchical Fine-Grained Classification
Jul 20, 2026Zilu Zhou, Dongliang Chang, Junhan Chen +1Hierarchical Classification Gradient Interference
Beijing University of Posts and Telecommunications, Beijing 100876, China · Beijing Key Laboratory of Multimodal Data Intelligent Perception and Governance, Beijing 100876, China
Hierarchy-Aware and Anatomy-Guided Learning for Lung Ultrasound Video Classification
Jul 20, 2026Alya Almsouti, Lotfi Mecharbat, Noha Aboukhater +5Hierarchical Classification Medical Image Classification
Mohamed bin Zayed University of Artificial Intelligence, UAE · SEHA, UAE · Sheikh Khalifa Medical City, UAE +2
Hierarchical Specialised Ensembles for Classification of Zebrafish Phenotypes Using the Selected Image Recognition Methods
Jul 17, 2026Piotr S. Maciąg, Monika Maciąg, Magdalena MajdanHierarchical Classification Multi-Label Classification
Institute of Computer Science, Warsaw University of Technology, Nowowiejska 15/19, 00-665 Warsaw, Poland · Laboratory of Neuronal Plasticity, Nencki Institute of Experimental Biology of the Polish Academy of Sciences, Warsaw, Poland · Laboratory of Behavioral Studies, Medical University of Lublin, Lublin, Poland +1
Mitigating The Effect of Class Imbalance in Data with Hierarchical and Dependable Structure
Jul 13, 2026Bipin Chhetri, Deepika Giri, Avishek Kadel +2Class-Imbalanced Learning Hierarchical Classification
Department of Computer Science1, Texas Tech University1 · Cumberland University2 · Yeshiva University3 +1
Constraint-Aware Hierarchical Search for Regulation-Driven Fine-Grained Classification
Jul 12, 2026Siyu Wang, Wei Tan, Lulu ChenHierarchical Classification Retrieval-Augmented Classification
aGusu Laboratory of Materials, Suzhou, China · cSuzhou Digital China Wuxin Intelligent Technology Co., Ltd., Suzhou, China
Graph-Constrained Policy Learning for Extreme Clinical Code Prediction
Jul 11, 2026Amritpal Singh, Sebastian Torres, Khawar Shakeel +1Hierarchical Classification Constrained Decoding
Division of Computer Science, Mathematics and Science St. John’s University, New York, NY, USA
Multi-Class vs. Multi-Label BERT for CVE-to-CWE Mapping: How Taxonomy Structure Shapes the Errors
Jul 8, 2026Ana Schwengber Kelm, Christian Bockermann, Jörg FrochteHierarchical Classification Multi-Label Classification
mindsquare AG · Bochum University of Applied Sciences
Taxlifier: Leveraging Disease Taxonomy for Enhanced Multi-Label Classification in Chest Radiography
Jul 6, 2026Mohammad S. Majdi, Jeffrey J. RodriguezHierarchical Classification Chest X-Ray Classification
aDept. of Electrical and Computer Engineering, The University of Arizona, Tucson, 85721, AZ, USA
Hierarchical Classification via Cascading Feature Elimination: Application to Human Phenotype Ontology-Aligned Facial Phenotyping (FaceMesh2HPO)
Jul 6, 2026Fabio Hellmann, Alexander Hustinx, Benjamin D. Solomon +4Hierarchical Classification Point Cloud Classification
1*Chair for Human-centered Artificial Intelligence, University of Augsburg, Universitätsstr. 6a, Augsburg, 86159, Bavaria, Germany. · Institute for Genomic Statistics and Bioinformatics, University of Bonn, Venusberg-Campus 1, Bonn, 53127, North Rhine-Westphalia, Germany. · 3National Human Genome Research Institute, National Institutes of2026 Health, 10 Center Dr, Bethesda, 20892, MD, United States of America.
AI Wizards at EXIST 2026: Hierarchical Soft-Label Learning for Multimodal Sexism Identification in Memes
Jul 5, 2026Matteo Fasulo, Antonio Gravina, Luca Tedeschini +1Soft-Label Learning Hierarchical Classification
Swiss Data Science Center, ETH Zürich, Andreasturm, Andreasstrasse 5, 8092 Zürich, Switzerland · Everest Systems GmbH, Max-Jarecki-Straße 21, 69115 Heidelberg, Germany · Villanova.ai S.P.A, Località Sa Illetta, SS 195 KM 2.3, 09123 Cagliari, Italy +1
A Multi-Branch Hierarchy-Aware Framework for Heterogeneous Audio Classification
Jul 2, 2026Beile Ning, Jiayi Yu, Zitong Wang +5Hierarchical Classification Audio Classification
Wuhan University, Wuhan, China · Harbin Engineering University, Harbin, China
Leveraging Multimodality for Real-Time Classification of Transients and Variables found by the Zwicky Transient Facility
Jun 30, 2026Ved G. Shah, Nabeel Rehemtulla, Adam A. Miller +13Hierarchical Classification Time Series Classification
Department of Physics and Astronomy, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA · Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA), 1800 Sherman Ave, Evanston, IL 60201, USA · NSF-Simons AI Institute for the Sky (SkAI), 172 E. Chestnut St., Chicago, IL 60611, USA +8
CogTax: A Four-Level Cognitive Taxonomy for Command-Line Computing Education
Jun 30, 2026Manuel Alonso-Carracedo, Ruben Fernandez-Boullon, Pedro Celard +2Hierarchical Classification Computer Science Education
Universidade de Vigo, Spain · IFCAE, Universidade de Vigo, Spain · aComputer Science Department, IFCAE-Instituto de Investigación en Física, Computación y Ciencia Aeroespacial, Universidade de Vigo, Ourense, 32004, Spain +1
TaxoMIL: Taxonomy-Constrained Learning for Hierarchical Whole Slide Image Analysis
Jun 30, 2026Chaeyeon Lee, Khang Nguyen Quoc, Jinsol Song +3Computational Pathology Hierarchical Classification
School of Electrical Engineering, Korea University, Seoul, Republic of Korea · Department of Hospital Pathology, The Catholic University of Korea College of Medicine, Seoul, Republic of Korea
Taxonomy-aware deep learning for hierarchical marine species classification in underwater imagery
Jun 24, 2026Dan Zimmerman, Dimitris A. Pados, George SklivanitisHierarchical Classification Underwater Imaging
Florida Atlantic University, Boca Raton, FL 33431, USA
Beyond Flat Labels: Level-Restricted Contrastive Learning for Hierarchical Fine-Grained Vision Classification
Jun 20, 2026Zhiyuan Tao, Srikumar Sastry, Matthew J Thompson +9Hierarchical Classification Contrastive Learning
The Ohio State University · Washington University in St. Louis · Neuromatch +1
ATLAS: Agentic Taxonomy of Large-Scale Software Ecosystems
Jun 19, 2026Junyi Lu, Mengyao Lyu, Jiahui Wu +6Software Engineering Hierarchical Classification
Institute of Software, Chinese Academy of Sciences, Beijing, China · University of Chinese Academy of Sciences, Beijing, China · Nanyang Technological University, Singapore +2
Consensus-based Agentic Large Language Model Framework for Harmonized Tariff Schedule Code Classification
Jun 15, 2026Truong Thanh Hung Nguyen, Khanh Van Quynh Nguyen, Hoang-Loc Cao +5Hierarchical Classification Multi-Agent LLM Systems
Analytics Everywhere Lab, University of New Brunswick, Canada · University of Economics Ho Chi Minh City, Vietnam
Knowing When to Ask: Self-Gated Clarification for Hierarchical Language Agents
Jun 9, 2026Aijing Gao, Yiming Kang, Mengdie Flora Wang +1Hierarchical Classification LLM Decision-Making
Amazon Web Services
Conveyance: A Versatile Framework for Learning in Structured Class Spaces
May 27, 2026Yasser Taha, Grégoire Montavon, Nils KörberHierarchical Classification
Centre for Artificial Intelligence in Public Health Research, Robert Koch Institute · Berlin Institute for the Foundations of Learning and Data, Institute for AI in Medicine, Charité Universitätsmedizin Berlin
Navigating the Emotion Tree: Hierarchical Hyperbolic RAG for Multimodal Emotion Recognition
May 16, 2026Zeheng Wang, Bo Zhao, Yijie Zhu +6Multimodal RAG Hierarchical Classification
Great Bay University Guangdong, Dongguan, China · Tencent Youtu Lab Shanghai, China · CUHK, shenzhen Guangdong, Shenzhen, China
How to Interpret Agent Behavior
May 13, 2026Jie Gao, Kaiser Sun, Jen-tse Huang +8Hierarchical Classification AI Agent Monitoring
1Johns Hopkins University · 2California Institute of Technology · 3Northeastern University +1
Online Continual Learning with Dynamic Label Hierarchies
May 12, 2026Xinrui Wang, Shao-Yuan Li, Bartłomiej Twardowski +2Class-Incremental Learning Hierarchical Classification
College of Computer Science and Technology, Nanjing University of Aeronautics and Astronautics · MIIT Key Laboratory of Pattern Analysis and Machine Intelligence · Computer Vision Center, Spain +4
Multi-domain Multi-modal Document Classification Benchmark with a Multi-level Taxonomy
May 11, 2026Denghao Ma, Qing Liu, Zulong Chen +5Hierarchical Classification Text Classification
Beijing Information Science and Technology University, China · Alibaba Group, China · Guangdong Laboratory of Artificial Intelligence and Digital Economy (SZ), China +2
A neurosymbolic Approach with Epistemic Deep Learning for Hierarchical Image Classification
May 11, 2026Ezel Kilicdere, Shireen Kudukkil Manchingal, Fabio CuzzolinHierarchical Classification Evidential Deep Learning
Datasand IT and Consultancy Ltd. · Institute for AI, Data Analysis and Systems (AIDAS) School of Engineering, Computing and Mathematics, Oxford Brookes University, UK
Classification Fields: Arbitrarily Fine Recursive Hierarchical Clustering From Few Examples
May 8, 2026Yicen Li, Ruiyang Hong, Anastasis Kratsios +2Hierarchical Classification Clustering
Department of Mathematics and Statistics, McMaster University, Canada · Vector Institute, Canada · University of Cambridge, United Kingdom
When Labels Have Structure: Improving Image Classification with Hierarchy-Aware Cross-Entropy
May 7, 2026April Chan, Davide D'Ascenzo, Sebastiano Cultrera di MontesanoHierarchical Classification Fine-Grained Image Classification
Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA, USA · Department of Computer Science, University of Milan, Milan, Italy · Department of Control and Computer Engineering, Politecnico di Torino, Torino, Italy +1
FoodCHA: Multi-Modal LLM Agent for Fine-Grained Food Analysis
May 6, 2026Woojin Lee, Pranav Mekkoth, Ye Tian +2Hierarchical Classification Fine-Grained Image Classification
Department of Computer Science and Engineering University of California, San Diego (UCSD)
Coherent Hierarchical Multi-Label Learning to Defer for Medical Imaging
May 4, 2026Joshua Strong, Pramit Saha, Emma Sun +2Hierarchical Classification Multi-Label Classification
Department of Engineering Science, University of Oxford, UK · Nuffield Division of Anaesthetics, University of Oxford, The John Radcliffe Hospital, UK
Learning Coarse-to-Fine Osteoarthritis Representations under Noisy Hierarchical Labels
May 1, 2026Tongxu ZhangHierarchical Classification Hierarchical Representation Learning
The Hong Kong Polytechnic University
Polaris: Coupled Orbital Polar Embeddings for Hierarchical Concept Learning
Apr 30, 2026Sahil Mishra, Srinitish Srinivasan, Sourish Dasgupta +1Hierarchical Classification Hierarchical Representation Learning
Indian Institute of Technology Delhi, New Delhi, India · KDM Lab, Dhirubhai Ambani University, Gandhinagar, Gujarat, India · Indian Institute of Technology Delhi, Abu Dhabi, UAE.
A Hierarchical Ensemble Inference Pipeline for Robust White Blood Cell Classification Under Domain Shifts
Apr 25, 2026Ruyi Dai, Tingkwong Ng, Hao ChenHierarchical Classification Ensemble Learning
Department of Computer Science and Engineering, The Hong Kong University of Science and Technology, Hong Kong, China · Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Hong Kong, China · Division of Life Science, Hong Kong University of Science and Technology, Hong Kong, China +2
Hierarchically Robust Zero-shot Vision-language Models
Apr 20, 2026Junhao Dong, Yifei Zhang, Hao Zhu +2Hierarchical Classification VLM Robustness
1Nanyang Technological University · 2CFAR, IHPC, A*STAR · 3Northwest Polytechnical University +2
SCHK-HTC: Sibling Contrastive Learning with Hierarchical Knowledge-Aware Prompt Tuning for Hierarchical Text Classification
Apr 17, 2026Ke Xiong, Qian Wu, Wangjie Gan +2Hierarchical Classification Hierarchical Representation Learning
School of Software Technology, Zhejiang University, China · NetEase Yidun AI Lab, Hangzhou, China
Spectral Hierarchy of the Cosmic Web
Mar 16, 2026Francisco-Shu Kitaura, Francesco SinigagliaHierarchical Classification Spectral Methods
Instituto de Astrofísica de Canarias, s/n, E-38205, La Laguna, Tenerife, Spain · Departamento de Astrofísica, Universidad de La Laguna, E-38206, La Laguna, Tenerife, Spain · Institute for Fundamental Physics of the Universe, Via Beirut 2, I-34151 Trieste, Italy +3
Semantics-Aware Hierarchical Consensus Learning for Remote Sensing Image Classification
Oct 6, 2025Giulio Weikmann, Gianmarco Perantoni, Lorenzo BruzzoneHierarchical Classification Remote Sensing
Department of Information Engineering and Computer Science, University of Trento, 38123 Trento, Italy
Label Hierarchy Transition: Delving into Class Hierarchies to Enhance Deep Classifiers
Dec 4, 2021Renzhen Wang, De cai, Kaiwen Xiao +3Skin Lesion Classification Hierarchical Classification
School of Mathematics and Statistics and Ministry of Education Key Lab of Intelligent Networks and Network Security, Xi’an Jiaotong University, Xi’an, China · Tencent AI Lab, Shenzhen, China · ByteDance, Shenzhen, China +4

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GeoGAT: Bidirectional Temporal Sampling Meets Hierarchical Graph Attention for Global Video Geo-localization

Junchao Cui, Xuanzi Ma, Wenqi Shi, Hangyu Li+3

Information Engineering University, Zhengzhou, China · Zhengzhou University, Zhengzhou, China

Hierarchical Classification

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Global video geo-localization aims to infer the geographic location of a video worldwide, evaluating performance across four geographic hierarchies: city, state/province, country, and continent. Existing methods typically employ one-way uniform sampling to process video frames and train independent classifiers for each hierarchy, which leads to the loss of key geographic cues and prediction conflicts between hierarchies, especially for complex multi-shot edited videos. To address these limitations, we propose GeoGAT, which integrates bidirectional temporal sampling with graph attention networks (GATs). Specifically, GeoGAT extracts forward and offset-reversed frame sequences to construct complementary spatiotemporal features. These fused features are then fed into a predefined geographical hierarchy graph, where GATs perform structure-aware message passing, while a dual-constraint mechanism prunes predictions to eliminate cross-hierarchy conflicts. We construct GeoGAT10k, comprising 9,720 multi-shot edited videos from 166 cities worldwide, specifically to benchmark generalization ability on complex video structures. Experimental results on CityGuessr68k and GeoGAT10k demonstrate that GeoGAT eliminates hierarchical conflicts entirely and achieves state-of-the-art performance across all four geographic hierarchies. On CityGuessr68k, GeoGAT outperforms the strongest baseline, evaluated under both classification and retrieval protocols, by 2.6 percentage points at the city level. On the more challenging GeoGAT10k with multi-shot edited videos, the accuracy improvement exceeds 24 percentage points, validating strong generalization to complex real-world scenarios.

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