[PDF][PDF] Robust Anomaly Detection in Time Series through Variational AutoEncoders and a Local Similarity Score.

P Matias, D Folgado, H Gamboa, AV Carreiro - Biosignals, 2021 - researchgate.net
… the model proposed in this work uses a post-processing similarity score between input
and reconstructed signals. In terms of the AUC score, the model proposed in this work (Ours) …

Web graph similarity for anomaly detection

P Papadimitriou, A Dasdan, H Garcia-Molina - Journal of Internet Services …, 2010 - Springer
… when similarities are “too high” or “too low.” In this paper, we focus on anomaly detection for
… We do this by computing one or more similarity scores between two consecutive web graphs…

[PDF][PDF] Unsupervised anomaly detection from semantic similarity scores

N Rafiee, R Gholamipoor, M Kollmann - arXiv preprint arXiv …, 2020 - academia.edu
… We therefore train a semantic similarity score, s(x, x′), to detect semantic differences
between nearby examples on the unit-hypersphere, which are determined by the readily trained …

Anomaly detection: A survey

V Chandola, A Banerjee, V Kumar - ACM computing surveys (CSUR), 2009 - dl.acm.org
… Other than these two issues, the supervised anomaly detection problem is similar to
building … Scoring-based anomaly detection techniques allow the analyst to use a domainspecific …

A survey of distance and similarity measures used within network intrusion anomaly detection

DJ Weller-Fahy, BJ Borghetti… - … Surveys & Tutorials, 2014 - ieeexplore.ieee.org
… This paper examines the use of distance and similarity measures as used in Network
Intrusion Detection (NID). There are a set of fundamental definitions of distance measures as …

Similarity-measured isolation forest: Anomaly detection method for machine monitoring data

C Li, L Guo, H Gao, Y Li - IEEE Transactions on Instrumentation …, 2021 - ieeexplore.ieee.org
anomaly detection method called similarity-measured isolation forest (SM-iForest) is proposed
to detect … Thereafter, the feature matrix was reused to measure the anomaly score of each …

Anomaly detection in dynamic networks: a survey

S Ranshous, S Shen, D Koutra… - Wiley …, 2015 - Wiley Online Library
… related work in graph mining, anomaly detection, and the high-… of anomalies that these
algorithms detect, namely, anomalous … of the changes in similarity scores. Edges with the highest …

[PDF][PDF] Sequence matching and learning in anomaly detection for computer security

T Lane, CE Brodley - … Workshop: AI Approaches to Fraud Detection …, 1997 - cdn.aaai.org
… To examine the hypothesis that detecting match adjacency is useful for this task, we modified
MC-P to bias the similarity score in favor of adjacent matches (as described below). This …

[PDF][PDF] Conformal kernel expected similarity for anomaly detection in time-series data

AM Safin, E Burnaev - Advances in Systems Science and Applications, 2017 - ijassa.ipu.ru
… was indicated, the anomaly score provided by this … anomaly score produced by EXPoSE.
To that end, the idea of Conformal Anomaly Detection is adopted to build an anomaly detector

Transferring the contamination factor between anomaly detection domains by shape similarity

L Perini, V Vercruyssen, J Davis - … of the AAAI Conference on Artificial …, 2022 - ojs.aaai.org
… enabling our approach is that the distribution of the normal examples’ anomaly scores in
both domains will be similar if they are derived using the same anomaly detection algorithm. …