Statistical outliers | Data mining
Novelty detection is the mechanism by which an intelligent organism is able to identify an incoming sensory pattern as being hitherto unknown. If the pattern is sufficiently salient or associated with a high positive or strong negative utility, it will be given computational resources for effective future processing. The principle is long known in neurophysiology, with roots in the orienting response research by E. N. Sokolov in the 1950s. The reverse phenomenon is habituation, i.e., the phenomenon that known patterns yield a less marked response. Early neural modeling attempts were by Yehuda Salu. An increasing body of knowledge has been collected concerning the corresponding mechanisms in the brain. In technology, the principle became important for radar detection methods during the Cold War, where unusual aircraft-reflection patterns could indicate an attack by a new type of aircraft. Today, the phenomenon plays an important role in machine learning and data science, where the corresponding methods are known as anomaly detection or outlier detection. An extensive methodological overview is given by Markou and Singh. (Wikipedia).
Modern Anomaly and Novelty Detection: Exercise - Session 4
Fundamentals Definition of anomaly Example applications Levels of learning supervision: full, semi, unsupervised Anomaly detection techniques Datasets used in workshop Q&A More complex anomalies Anomalies and clustering methods
From playlist Modern Anomaly and Novelty Detection
Modern Anomaly and Novelty Detection: Introduction - Session 1
About anomalies Applications Thinking fast and slow
From playlist Modern Anomaly and Novelty Detection
Modern Anomaly and Novelty Detection: Anomaly Detection - Session 2
Anomaly detection approaches Anomaly detection techniques Deep learning based approaches
From playlist Modern Anomaly and Novelty Detection
Introduction to Detection Theory (Hypothesis Testing)
http://AllSignalProcessing.com for more great signal-processing content: ad-free videos, concept/screenshot files, quizzes, MATLAB and data files. Includes definitions of binary and m-ary tests, simple and composite hypotheses, decision regions, and test performance characterization: prob
From playlist Estimation and Detection Theory
Modern Anomaly and Novelty Detection: Exercise - Session 5
Example applications & techniques Signals (ie. audio) Time series generally Fake news Temporal predictions
From playlist Modern Anomaly and Novelty Detection
Overview of Modern Anomaly and Novelty Detection | AISC
Link to the upcoming anomaly detection workshop: https://www.eventbrite.ca/e/premium-hands-on-workshop-modern-recipes-for-anomaly-novelty-detection-tickets-84534971375?aff=liads&discount=lunch For slides and more information on the paper, visit https://aisc.ai.science/events/2020-01-08 D
From playlist Workshop Overviews
Modern Anomaly and Novelty Detection: Deep Learning I - Session 18
When to use deep learning Self supervised learning for anomalies Auto-regressive models
From playlist Modern Anomaly and Novelty Detection
Modern Anomaly and Novelty Detection: Exercise - Session 6
Synthetic dataset Gaussian model Using standard deviation
From playlist Modern Anomaly and Novelty Detection
Applied Machine Learning 2019 - Lecture 16 - NMF; Outlier detection
Non-negative Matrix factorization for feature extraction Outlier detection with probabilistic models Isolation forests One-class SVMs Materials and slides on the class website: https://www.cs.columbia.edu/~amueller/comsw4995s19/schedule/
From playlist Applied Machine Learning - Spring 2019
I describe How to Detect a Liar. This information was created by combining info from numerous texts and figuring out what every expert agrees on. You'll learn to spot lying in men, women, politicans, etc.
From playlist Negotiation Tutorials
Operationalizing creativity: the data science of innovation from elites to vox pop - Dr Simon Dedeo
Bridging disciplines in analysing text as social and cultural data workshop (21-22 September, 2017) The potential benefits of using large-scale text data to study social and cultural phenomena is increasingly being recognized, but researchers are currently scattered across a range of ofte
From playlist Bridging disciplines in analysing text as social and cultural data
Modern Anomaly and Novelty Detection: Exercise - Session 14
iforest continued More Q&A When to use iforest Details of algorithm Hyperparameter selection
From playlist Modern Anomaly and Novelty Detection
Modern Anomaly and Novelty Detection: Exercise - Session 25
GAN model Different modelling options AAE VAE Conditioning
From playlist Modern Anomaly and Novelty Detection
Modern Anomaly and Novelty Detection: Classical ML Techniques I - Session 11
Approaches & Techniques iforest itree one-SVM OC-SVM
From playlist Modern Anomaly and Novelty Detection