LOF: identifying density-based local outliers
SIGMOD '00 Proceedings of the 2000 ACM SIGMOD international conference on Management of data
Efficient algorithms for mining outliers from large data sets
SIGMOD '00 Proceedings of the 2000 ACM SIGMOD international conference on Management of data
OPTICS-OF: Identifying Local Outliers
PKDD '99 Proceedings of the Third European Conference on Principles of Data Mining and Knowledge Discovery
Algorithms for Mining Distance-Based Outliers in Large Datasets
VLDB '98 Proceedings of the 24rd International Conference on Very Large Data Bases
Enhancing Effectiveness of Outlier Detections for Low Density Patterns
PAKDD '02 Proceedings of the 6th Pacific-Asia Conference on Advances in Knowledge Discovery and Data Mining
Angle-based outlier detection in high-dimensional data
Proceedings of the 14th ACM SIGKDD international conference on Knowledge discovery and data mining
A nonparametric outlier detection for effectively discovering top-n outliers from engineering data
PAKDD'06 Proceedings of the 10th Pacific-Asia conference on Advances in Knowledge Discovery and Data Mining
NDoT: nearest neighbor distance based outlier detection technique
PReMI'11 Proceedings of the 4th international conference on Pattern recognition and machine intelligence
Visual evaluation of outlier detection models
DASFAA'10 Proceedings of the 15th international conference on Database Systems for Advanced Applications - Volume Part II
Detecting ECG abnormalities via transductive transfer learning
Proceedings of the ACM Conference on Bioinformatics, Computational Biology and Biomedicine
CTOD: collaborative tree-based outlier detection in wireless sensor networks
Proceedings of the 10th ACM international symposium on Mobility management and wireless access
A survey on unsupervised outlier detection in high-dimensional numerical data
Statistical Analysis and Data Mining
Proceedings of the 21st ACM international conference on Information and knowledge management
Subsampling for efficient and effective unsupervised outlier detection ensembles
Proceedings of the 19th ACM SIGKDD international conference on Knowledge discovery and data mining
Clustering and outlier detection using isoperimetric number of trees
Pattern Recognition
AusDM '12 Proceedings of the Tenth Australasian Data Mining Conference - Volume 134
Enhancing minimum spanning tree-based clustering by removing density-based outliers
Digital Signal Processing
Data Mining and Knowledge Discovery
Ensembles for unsupervised outlier detection: challenges and research questions a position paper
ACM SIGKDD Explorations Newsletter
A ranking-based algorithm for detection of outliers in categorical data
International Journal of Hybrid Intelligent Systems
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Detecting outliers which are grossly different from or inconsistent with the remaining dataset is a major challenge in real-world KDD applications. Existing outlier detection methods are ineffective on scattered real-world datasets due to implicit data patterns and parameter setting issues. We define a novel Local Distance-based Outlier Factor (LDOF) to measure the outlier-ness of objects in scattered datasets which addresses these issues. LDOF uses the relative location of an object to its neighbours to determine the degree to which the object deviates from its neighbourhood. We present theoretical bounds on LDOF's false-detection probability. Experimentally, LDOF compares favorably to classical KNN and LOF based outlier detection. In particular it is less sensitive to parameter values.