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Bibliographic Details
Main Authors:	Feng, Yaoxuan, Li, Yuxin, Lv, Weijiang, Zhao, Zixuan, Wang, Yubiao, Chen, Wenchao, Chen, Bo, Liu, Hongwei
Format:	Preprint
Published:	2026
Subjects:	Computer Vision and Pattern Recognition
Online Access:	https://arxiv.org/abs/2605.24402
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Enhancing Multi-Class Anomaly Detection via Diffusion Refinement with Dual Conditioning
by: Zhan, Jiawei, et al.
Published: (2024)

Memory-Augmented Dual-Decoder Networks for Multi-Class Unsupervised Anomaly Detection
by: Xing, Jingyu, et al.
Published: (2025)

FastRef:Fast Prototype Refinement for Few-Shot Industrial Anomaly Detection
by: Tian, Long, et al.
Published: (2025)

One-Step Diffusion with Inverse Residual Fields for Unsupervised Industrial Anomaly Detection
by: Zhang, Boan, et al.
Published: (2026)

Pro-AD: Learning Comprehensive Prototypes with Prototype-based Constraint for Multi-class Unsupervised Anomaly Detection
by: Zhou, Ziqing, et al.
Published: (2025)

AnomalySD: Few-Shot Multi-Class Anomaly Detection with Stable Diffusion Model
by: Yan, Zhenyu, et al.
Published: (2024)

Dinomaly: The Less Is More Philosophy in Multi-Class Unsupervised Anomaly Detection
by: Guo, Jia, et al.
Published: (2024)

DDGAD: Trajectory Dynamics for Diffusion-Based Graph Anomaly Detection
by: Yang, Yuxin, et al.
Published: (2026)

ShortcutBreaker: Low-Rank Noisy Bottleneck and Frequency Filtering Block for Multi-Class Unsupervised Anomaly Detection
by: Tang, Peng, et al.
Published: (2025)

Semantically Guided Dynamic Visual Prototype Refinement for Compositional Zero-Shot Learning
by: Peng, Zhong, et al.
Published: (2025)

Diffusion-based Layer-wise Semantic Reconstruction for Unsupervised Out-of-Distribution Detection
by: Yang, Ying, et al.
Published: (2024)

Correcting Deviations from Normality: A Reformulated Diffusion Model for Multi-Class Unsupervised Anomaly Detection
by: Beizaee, Farzad, et al.
Published: (2025)

Guided Reconstruction with Conditioned Diffusion Models for Unsupervised Anomaly Detection in Brain MRIs
by: Behrendt, Finn, et al.
Published: (2023)

MambaAD: Exploring State Space Models for Multi-class Unsupervised Anomaly Detection
by: He, Haoyang, et al.
Published: (2024)

Generalist Graph Anomaly Detection via Prototype-Based Distillation
by: Xu, Yiming, et al.
Published: (2026)

CoPS: Conditional Prompt Synthesis for Zero-Shot Anomaly Detection
by: Chen, Qiyu, et al.
Published: (2025)

Unsupervised Low-dose CT Reconstruction with One-way Conditional Normalizing Flows
by: An, Ran, et al.
Published: (2024)

MCDDPM: Multichannel Conditional Denoising Diffusion Model for Unsupervised Anomaly Detection in Brain MRI
by: Trivedi, Vivek Kumar, et al.
Published: (2024)

Understanding the Essence: Delving into Annotator Prototype Learning for Multi-Class Annotation Aggregation
by: Chen, Ju, et al.
Published: (2025)

Prototypical Learning Guided Context-Aware Segmentation Network for Few-Shot Anomaly Detection
by: Jiang, Yuxin, et al.
Published: (2025)

Unsupervised Identification and Replay-based Detection (UIRD) for New Category Anomaly Detection in ECG Signal
by: Shi, Zhangyue, et al.
Published: (2025)

Large Language Model Guided Knowledge Distillation for Time Series Anomaly Detection
by: Liu, Chen, et al.
Published: (2024)

Multi-Source Unsupervised Domain Adaptation with Prototype Aggregation
by: Huang, Min, et al.
Published: (2024)

Dual Conditioned Motion Diffusion for Pose-Based Video Anomaly Detection
by: Wang, Hongsong, et al.
Published: (2024)

Class-Prototype Conditional Diffusion Model with Gradient Projection for Continual Learning
by: Doan, Khanh, et al.
Published: (2023)

MAEDiff: Masked Autoencoder-enhanced Diffusion Models for Unsupervised Anomaly Detection in Brain Images
by: Xu, Rui, et al.
Published: (2024)

Dual-Modeling Decouple Distillation for Unsupervised Anomaly Detection
by: Liu, Xinyue, et al.
Published: (2024)

Multi-Granularity Class Prototype Topology Distillation for Class-Incremental Source-Free Unsupervised Domain Adaptation
by: Deng, Peihua, et al.
Published: (2024)

A DNAzyme‐Based Nanohybrid for Ultrasound and Enzyme Dual‐Controlled mRNA Regulation and Combined Tumor Treatment
by: Hanji Huang, et al.
Published: (2024)

Scalable Context-Aware Graph Attention for Unsupervised Anomaly Detection in Large-Scale Mobile Networks
by: Malacarne, Sara, et al.
Published: (2026)

Unsupervised Detection of Fetal Brain Anomalies using Denoising Diffusion Models
by: Olsen, Markus Ditlev Sjøgren, et al.
Published: (2024)

Ensembled Cold-Diffusion Restorations for Unsupervised Anomaly Detection
by: Marimont, Sergio Naval, et al.
Published: (2024)

Dual-Student Knowledge Distillation Networks for Unsupervised Anomaly Detection
by: Yao, Liyi, et al.
Published: (2024)

Unified Unsupervised and Sparsely-Supervised 3D Object Detection by Semantic Pseudo-Labeling and Prototype Learning
by: He, Yushen, et al.
Published: (2026)

How Low Can You Go? Surfacing Prototypical In-Distribution Samples for Unsupervised Anomaly Detection
by: Meissen, Felix, et al.
Published: (2023)

Unsupervised Continual Anomaly Detection with Contrastively-learned Prompt
by: Liu, Jiaqi, et al.
Published: (2024)

SoftPatch: Unsupervised Anomaly Detection with Noisy Data
by: Jiang, Xi, et al.
Published: (2024)

Diffusion Models with Ensembled Structure-Based Anomaly Scoring for Unsupervised Anomaly Detection
by: Behrendt, Finn, et al.
Published: (2024)

GeoFaith: A Spatio-Temporal Dual View of Faithful Chain-of-Thought
by: Lv, Weijiang, et al.
Published: (2026)

if (filemtime($filename) + $maxlifetime < time()) { unlink($filename); $count++; } } return $count; } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ protected function saveSession($sessId, $data): bool { $sessFile = $this->path . '/sess_' . $sessId; if ($handle = fopen($sessFile, 'w')) { $return = false; // Lock the file for exclusive access to avoid issues with multiple // processes writing session simultaneously: if (flock($handle, LOCK_EX)) { $return = fwrite($handle, $data); // Make sure that there's no trailing data by truncating the file to // the correct length: ftruncate($handle, strlen($data)); fflush($handle); flock($handle, LOCK_UN); } fclose($handle); if ($return !== false) { return true; } } // If we got this far, something went wrong with the file output... // It is tempting to throw an exception here, but this code is called // outside of the context of exception handling, so all we can do is // echo a message.

// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return 0; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data): bool { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data): bool; }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

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