Browse State-of-the-Art › Weakly-supervised Video Anomaly Detection
Weakly-supervised Video Anomaly Detection
21 papers with code · 2 benchmarks · 2 datasets archive 2025-07-28
Weakly-supervised Video Anomaly Detection (WS-VAD) refers to identifying unusual or anomalous behaviors within video sequences using models trained primarily on video-level labels, without explicit frame-level annotations. Unlike fully-supervised methods, weakly-supervised approaches significantly reduce annotation costs by leveraging coarse labels (e.g., videos labeled as normal or anomalous). The primary challenge of this task is accurately localizing temporal anomalies and effectively distinguishing subtle anomalous activities from normal background events, relying only on limited supervision signals.
Description from the archive archive 2025-07-28.
Benchmarks archive 2025-07-28
2 leaderboard tables shown for this task, 2 with rows (a “benchmark” on this site is a table with at least one row, as on /sota), ordered by row count. “Best model” is the first row in the archive's own order at snapshot; nothing is re-ranked here and metric direction is not recorded in the archive. PwC's Trend sparklines are not in the archive, so that column is omitted.
| Dataset | Best model (first row in archive order) | Paper | Code | Syntology | Compare |
|---|---|---|---|---|---|
| ShanghaiTech Weakly Supervised (16 rows) | DDRO | Dual‑detector Re‑optimization for Federated Weakly Supervised... | code | — | Compare |
| UBnormal (11 rows) | DDRO (SSALA) | Dual‑detector Re‑optimization for Federated Weakly Supervised... | code | — | Compare |
Syntology column: samples harvested from the paper's repositories and executed on synthesized fixtures; “ran” is not a correctness claim and does not order the table. A dash means no Syntology record for that paper, not a recorded non-run. Read from the graph 2026-09-24.
Libraries
Not in the archive: the export carries no per-task library table, so there is nothing to show at snapshot 2025-07-28.
Datasets archive 2025-07-28
2 datasets whose archive record lists this task, ordered by the archive's paper count.
Subtasks archive 2025-07-28
No subtask under this task in the archive's task tree.
Parent tasks archive 2025-07-28
Most implemented papers archive 2025-07-28
21 shown of 21 papers with code (36 tagged with this task in all), ordered by repositories listed in the archive, not by stars (the archive holds no stars, so PwC's “Social” and “Latest” sorts cannot be reproduced). Papers without a page here are shown as plain text.
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12 Jan 2018 9 repositories listed Syntology ran 4 of 6 samples · 2 unverified · 4 pointer-only (licence)To avoid annotating the anomalous segments or clips in training videos, which is very time consuming, we propose to learn anomaly through the deep multiple instance ranking framework by leveraging weakly labeled…
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25 Jan 2021 3 repositories listed Syntology ran 4 of 5 samples · 1 unverified · 5 pointer-only (licence)To address this issue, we introduce a novel and theoretically sound method, named Robust Temporal Feature Magnitude learning (RTFM), which trains a feature magnitude learning function to effectively recognise the…
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28 Sep 2023 2 repositories listedOur approach takes into account snippet-level encoded features without the supervision of pseudo labels.
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9 Dec 2022 2 repositories listedVideo anomaly detection (VAD) -- commonly formulated as a multiple-instance learning problem in a weakly-supervised manner due to its labor-intensive nature -- is a challenging problem in video surveillance where the…
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13 Jun 2025 1 repository listedFederated weakly supervised video anomaly detection represents a significant advancement in privacy-preserving collaborative learning, enabling distributed clients to train anomaly detectors using only video-level…
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4 May 2025 1 repository listedWeakly-supervised video anomaly detection (WS-VAD) using Multiple Instance Learning (MIL) suffers from label ambiguity, hindering discriminative feature learning.
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17 Mar 2025 1 repository listedThis work explores the potential application of dynamic information from event data in video anomaly detection.
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24 Jan 2024 1 repository listed Syntology ran 0 of 1 samples · 1 unverifiedVideo Anomaly Detection (VAD) has been extensively studied under the settings of One-Class Classification (OCC) and Weakly-Supervised learning (WS), which however both require laborious human-annotated normal/abnormal…
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4 Dec 2023 1 repository listedTo address these limitations, we propose a Dynamic Erasing Network (DE-Net) for weakly supervised video anomaly detection, which learns multi-scale temporal features.
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26 Nov 2023 1 repository listed Syntology ran 3 of 5 samples · 2 unverified · 5 pointer-only (licence)In the proposed BN-WVAD, we leverage the Divergence of Feature from Mean vector (DFM) of BatchNorm as a reliable abnormality criterion to discern potential abnormal snippets in abnormal videos.
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22 Aug 2023 1 repository listed Syntology ran 4 of 5 samples · 1 unverifiedWith the benefit of dual branch, VadCLIP achieves both coarse-grained and fine-grained video anomaly detection by transferring pre-trained knowledge from CLIP to WSVAD task.
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26 Jun 2023 1 repository listed Syntology ran 0 of 9 samples · 9 unverifiedAdditionally, we propose a Prompt-Enhanced Learning (PEL) module that integrates semantic priors using knowledge-based prompts to boost the discriminative capacity of context features while ensuring separability between…
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22 Mar 2023 1 repository listed Syntology ran 2 of 2 samples · 0 unverified · 2 pointer-only (licence)At each MIL training iteration, we use the current detector to divide the samples into two groups with different context biases: the most confident abnormal/normal snippets and the rest ambiguous ones.
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10 Feb 2023 1 repository listed Syntology ran 7 of 7 samples · 0 unverifiedTo address this issue, we propose an Uncertainty Regulated Dual Memory Units (UR-DMU) model to learn both the representations of normal data and discriminative features of abnormal data.
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28 Nov 2022 1 repository listedWeakly supervised detection of anomalies in surveillance videos is a challenging task.
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23 Oct 2022 1 repository listedVideo anomaly detection (VAD) aims at localizing unexpected actions or activities in a video sequence.
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13 Oct 2022 1 repository listedIn this paper, we study explicitly the power of video classification supervision using a BERT or LSTM.
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3 Jun 2022 1 repository listedTherefore it is important to extract better quality features from the available videos.
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24 Mar 2022 1 repository listed Syntology ran 1 of 1 samples · 0 unverifiedBN-SVP essentially performs dynamic non-parametric hierarchical clustering with an enhanced self-transition that groups segments in a video into temporally consistent and semantically coherent hidden states that can be…
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15 Apr 2021 1 repository listed Syntology ran 0 of 1 samples · 1 unverifiedAnomaly detection in surveillance videos is a challenging task due to the diversity of anomalous video content and duration.
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4 Apr 2021 1 repository listed Syntology ran 1 of 1 samples · 0 unverified · 1 pointer-only (licence)Weakly supervised video anomaly detection (WS-VAD) is to distinguish anomalies from normal events based on discriminative representations.
Syntology lines on 11 of the papers shown; no Syntology record for the others (a paper without an arXiv id cannot be joined to the graph, and absence from the graph layer is not a recorded non-run). “Ran” means the sample executed on a synthesized fixture, not that the paper's result was reproduced. Read from the graph 2026-09-24.
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