generalized and efficient outlier detection for spatial temporal and high-dimensional data mining

 

 

 

 

This dissertation is closely related to dynamic data mining, more specically, to clustering, outlier detection and indexing for multi-dimensional data.The range query under this index structure can be efciently processed for both low- and high-dimensional data sets. Since then, outlier detection has been studied on a large variety of data types including high-dimensional data, uncertain data, stream data, network data, time series data, spatial data, and spatio-temporal data. 4 Spatial temporal, Event detection and Social Media. 4.1 Literature review.10. Zhong (2005) explored an online Spherical K-mean algorithm for clustering high dimensional text data that applies the Winner Take-All competitive learning technique with the combination of annealing-type learning Spatiotemporal datamining tasks and techniques can be roughly classified into indexing and searching, pattern analysis, clustering, compression, and outlier detection. Both the temporal and spatial dimensions could add substantial complexity to data-mining tasks. Data mining High-dimensional spaces Outlier detection.Aggarwal CC, Hinneburg A, Keim DA (2001) On the surprising behavior of distance metrics in high dimensional space. In high-dimensional space, the data becomes sparse, and the true outliers become masked byAn eective outlier detection method would need to search the data points and dimensions in anHowever, unlike frequent pattern mining, in which one is looking for patterns with high frequency, the In anomaly detection the data stream outlier mining is an dimensional features to overcome the cost when building term sets.A of trajectory data outlier detection that brings out some. novel idea for spatial clustering data is been proposed that challenges when we deal with the data for whom the novelty detection: The training data is not polluted by outliers, and we are interested in detecting anomalies in new observations.2.7.2.

2. Isolation Forest. One efficient way of performing outlier detection in high-dimensional datasets is to use random forests. Abstract - Outlier detection is an important research problem in data mining that aims to discover useful abnormal and irregular patterns in large data sets.Thus, such approaches do not work well in moderately high dimensional (multivariate) spaces, and have difficult to find a right model to fit the : Data Mining, Subspace Clustering, Outlier Detection, Dimensional Reduction. 1. Introduction. Finding outliers is a challenging data mining task, especially for high dimensional data sets.7. References. [1] C. C.

Aggarwal and P. S. Yu. Outlier Detection for High Dimensional Data. Keywords: Data classification, data clustering, data mining, high dimensional data, outlier detection. INTRODUCTION. Data mining is defined as the process that includes the extraction of interesting, interpretable, useful and novel information form of data. Detecting novelty in text, topic detection, and mining contextual outliers. Collective outliers on spatial data.Characteristics of collective outliers. 225. Outlier detection in high- dimensional data. An effective and efficient algorithm for high-dimensional outlier detection.Finding Generalized Projected Clusters in High Dimensional Spaces. Outlier detection for data mining is often based on distance measures, clustering and spatial methods.They are often unsuitable for high-dimensional data sets and for arbitrary data sets without prior knowledge of the underlying data distribution (Papadimitriou et al 2002). E. Schubert Generalized and Efficient Outlier Detection for Spatial, Temporal, and High-Dimensional Data Mining PhD Thesis, Ludwig-Maximilians-Universitt Mnchen, Munich, Germany, 2013. 2 Mining Temporal Sequences. One possible definition of data mining is the nontrivial extraction of implicitThe representation problem is especially important when dealing with time series, since direct manipulation of continuous, high-dimensional data in an efficient way is extremely difficult. Abstract—As an important area of spatial-temporal data mining, trajectory outlier detection has already attracted broad attention in recent years. In this paper, we present a novel distance measurement between spatial-temporal Predictive Models Spatial outliers. Winter School on "Data Mining Techniques and Tools for Knowledge Discovery in Agricultural Datasets. trend detection finds trends in database. A trend is a temporal pattern in some time series data. A spatial trend is defined as a pattern of change of a Generalized and Efficient Outlier Detection for Spatial, Temporal, and High-Dimensional Data Mining.Outlier Detection in High-Dimensional Data. Tutorial at the 17th Pacific-Asia Conference on Knowledge Discovery and Data Mining (PAKDD), Gold Coast, Australia. Presentation on theme: "Spatial and Temporal Data Mining"— Presentation transcript28 Clustering High-Dimensional Data Many applications: text documents, DNA micro-array data Major challenges: Many irrelevant dimensions may mask clusters Distance measure becomes Detecting Outliers In High Dimensional Data Sets.Outlier Detection Using Principal Component Analysis. One of the challenges in data analysis in general and predictive modeling in particular is dealing with outliers. 1 Spatio-Temporal Outlier Detection in Environmental Data Tao Cheng and Berk Anbaroglu.Massive data with both spatial and temporal dimensions are collected with increasing use of sensors so that data mining on this complex data structure is gaining popularity. Those objects with the highest outlier scores are returned as spatial categorical outliers.Keywords Spatial Categorical data Spatial dependency Pair correlation Outlier detection.Lu et al. presented a multi-scale approach to detecting spatial temporal outliers [33].

1.1 Outlier Detection in Large and High Dimensional Data . . .[9] Alexander Strehl and Joydeep Ghosh, Relationship-based clustering and visualization for high-dimensional data mining, INFORMS journal on computing, pp. 208239, 2003. Since then, outlier detection has been studied on a large variety of data types including high-dimensional data, uncertain data, stream data, network data, time series data, spatial data, and spatio-temporal data. Outlier and Outlier Analysis Outlier Detection Methods Statistical Approaches Proximity-Base Approaches Clustering-Base Approaches Classification Approaches Mining Contextual and Collective Outliers Outlier Detection in High Dimensional Data Summary. 2. Rather than discuss specific data mining applications at length (such as, say, collaborative filtering, credit scoring, and fraud detection)In high dimensional spaces, "nearest" points may be a long way away.Spatial, geographic, or image data are located in two and three dimensional spaces. My PhD thesis has the title Generalized and Efficient Outlier Detection for Spatial, Temporal, and High-Dimensional Data Mining and focuses on the detection of anomalous data. I also spent one term at the UC Berkeley as visiting scholer to research in Information Systems. Specic Challenges for Outlier Detection for Temporal Data: While temporal outlier detection aims to nd rare and interesting instances, as in the case of traditional outlier detection, new challenges arise due to theOutlier Detection for High Dimensional Data. SIGMOD Records, 30:3746, May 2001. In data mining, anomaly detection (also outlier detection) is the identification of items, events or observations which do not conform to an expected pattern or other items in a dataset. Typically the anomalous items will translate to some kind of problem such as bank fraud, a structural defect Keywords: Data mining, Spatial outliers, Efficient algorithms, Delaunay-triangulation. 1 Introduction.In KDD 1996. [10] J. H. Friedman and N. I. Fisher: Bump Hunting in High- dimensional Data. Since then, outlier detection has been studied on a large variety of data types including high-dimensional data, uncertain data, stream data, network data, time series data, spatial data, and spatio-temporal data. outliers in precipitation data by storing high discrepancy spatial regions over time.[5] Barua, S. and Alhajj, R. (2007). Parallel wavelet transform for spatio- temporal outlier detection in large meteorological data. Index Terms—temporal outlier detection, time series data, data streams, distributed data streams, temporal networks, spatio-temporal outliersOutlier detection has been studied in a variety of data domains including high-dimensional data [5], uncertain data [6], streaming data [7], [8], [9], network When the spatial data has a temporal (sequential) component it is referred to as spatio- temporal data, e.g climate data. In graph data, dataGraph-based outlier detection. In Proceedings of the 9th ACM SIGKDD international conference on Knowledge discovery and data mining. Finally, outlier detection strategies can also be used for data cleaning as a step before any traditional mining algorithm is applied to the data.mean, which might not work well for some data. We emphasize that our focus is to detect outliers in high-dimensional mixed-attribute data (e.g. network and high-dimensional data spaces (iv) theBy abstracting from a single vector space, other data types that involve spatial and temporal relationships can be analyzed.Finally, new outlier detection methods are constructed customized for the specific problems of these real data sets. Mining of outliers from the normal data is very important and scope of this is very high.Simple and efficient steps are used to remove outliers form information Keywords— Outliers Outlier mining Fraud detection High Dimensional data ARVDH Algorithm I. INTRODUCTION Outlier detection Anna Koufakou , Michael Georgiopoulos, A fast outlier detection strategy for distributed high-dimensional data sets with mixed attributes, Data Mining and Knowledge Discovery, v.20 n.2, p.259-289, March 2010. Outlier Detection for Temporal Network Data. Eigenspace-based Anomaly Detection. Outliers in Mobile Communication Graphs. Outlier packages: Data types: high-dimensional data, uncertain data, stream data, network data, time series data. Outlier detection as a branch of data mining has many important applications and deserves more attention from data mining community.The earliest algorithms used or outlier detection are applicable only for single dimensional data sets. Outlier detection for high dimensional data is Rather than discuss specific data mining applications at length (such as, say, collaborative filtering, credit scoring, and fraud detection)In high dimensional spaces, "nearest" points may be a long way away.Spatial, geographic, or image data are located in two and three dimensional spaces. Key words: Spatio-Temporal, Data Mining, Outlier Detection, South America, Precipitation Extremes 1 Introduction Spatio- temporal data mining is the discovery of interesting spatial patterns from data over time using data mining techniques on spatially and temporally distributed data. Abstract: Outlier detection is very important functionality of data mining, it has enormous applications.The experimental results show that proposed approach is performing much better to identify outliers, especially in high dimensional spatial-temporal data. Keywords-Outliers, data mining, data stream, fraud detection. I. INTRODUCTION Data mining extracts hidden and useful information from the data.DEXA 10. [11] C. C. Aggarwal and P. S. Yu 2001. Outlier detection for high dimensional data. In Proc. Mining spatial-temporal outliers In this paper, we have discussed non- spatial outliers, spatial outliers and sequential outliers.[1] Aggarwal, C. C. and Yu, P. S Outlier detection for high dimensional data, Proceedings of the 2000 ACM SIGMOD International Conference on Network Intrusion Detection. Data Mining for Homeland Defense.w High dimensionality. w Thousands of dimensions are possible. w Spatial/ temporal nature of the data. Handles high dimensional data. Density invariant. Built-in noise removal. [25] reviewed spatial data mining from a spatial database approach Roddick et al. [12] provided a bibliography for spatial, temporal and spatiotemporal data mining Miller et al.Schubert, E. Zimek, A. Kriegel, H.P. Local outlier detection reconsidered: A generalized view on locality with Byron Gao, Martin Ester. Converting Output Scores from Outlier Detection Algorithms into Probability Estimates.207.Jianping Zhang, Manu Shukla. Opening the Black Box of Feature Extraction: Incorporating Visualization into High-Dimensional Data Mining Processes Abstract. High-dimensional data in Euclidean space pose special challenges to data mining algorithms.In about just the last few years, the task of unsupervised outlier detection has found new specialized solutions for tackling high-dimensional data in Euclidean space.

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