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transportation data analysis. advances in data mining
transportation data analysis. advances in data mining

... (b) Select the cases and variables you want to analyze and that are appropriate for your analysis (c) Perform transformations on certain variables, if needed (d) Clean the raw data so that is ready for the modeling tools 4. Modeling Phase. (a) Select and apply appropriate modeling techniques (b) Cal ...
Text Mining and Clustering
Text Mining and Clustering

... computing. Unless one is dealing with a small corpus consisting of very few terms, it is necessary to reduce the number of dimensions subject to analysis. Even then, the resulting clusters may be less than satisfying as reasonable representations of a text. The literature cites several specific prob ...
Possible Topics - NDSU Computer Science
Possible Topics - NDSU Computer Science

... "flat region", from which the strong cluster associated with that pulse can be extracted. So we will have a vertical "mask" defining each strong cluster from each dataset. We can quickly "AND" those to find common strong clusters using vertical technology. With this minor extension to Dr. Daxin Jian ...
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Outlier Detection for Business Intelligence using Data

... detailed process schema capable of supporting a forthcoming validation, or to explore on its actual behavior. ...
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Multirelational Association Rule Mining

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A Bottom-Up Approach for Automatically Grouping Sensor Data

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... 2.1. Efficiently Mining Frequent Itemsets in Centralized Databases Almost all algorithms for mining frequent itemsets use the same procedure  first a set of candidates is generated, next infrequent ones are pruned, and only the frequent ones are used to generate the next set of candidates. Clearly, ...
a comprehensive study of mining web data
a comprehensive study of mining web data

... variable results for the different dimensions of data are shown. From the results, we can conclude that Non-negative matrix factorization (NMF) is a promising approach for web structure analysis because of its superiority over other methods as it has higher accuracy values. "The anatomy of a Large-S ...
Mining Subspace Clusters: Enhanced Models, Efficient Algorithms
Mining Subspace Clusters: Enhanced Models, Efficient Algorithms

... As a natural property for clustering (unsupervised learning), no knowledge is given about the hidden structure of the data. This poses a major challenge to evaluation of subspace clustering results. One possible but quite subjective way of evaluation is visual exploration of results by domain expert ...
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Multi-Label Classification: An Overview

... can belong to different levels of the hierarchy. The top level of the MIPS (Munich Information Centre for Protein Sequences) hierarchy (http://mips.gsf.de/) consists of classes such as: Metabolism, Energy, Transcription and Protein Synthesis. Each of these classes is then subdivided into more specif ...
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Visualizing Demographic Trajectories with Self

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lecture1428550844

... Data mining query languages and ad hoc data mining. - Data Mining Query language that allows the user to describe ad hoc mining tasks, should be integrated with a data warehouse query language and optimized for efficient and flexible data mining. Presentation and visualization of data mining result ...
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Trajectory Data Pattern Mining

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Mining Frequent Patterns from Very High Dimensional Data: A Top

... rules based on frequent patterns can be used to build gene networks [9]. Classification and clustering algorithms are also applied on microarray data [3, 4, 6]. Although there are many algorithms dealing with transactional data sets that usually have a small number of dimensions and a large number o ...
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Automating Knowledge Discovery Workflow Composition Through

... and services for deploying data mining applications on standards compliant grid service infrastructures. MiningMart focuses on guiding the user to choose the appropriate preprocessing steps in propositional data mining. Both systems contain a metamodel for representing and structuring information ab ...
Efficient Pattern Mining of Uncertain Data with Sampling
Efficient Pattern Mining of Uncertain Data with Sampling

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Efficient Frequent Item Counting in Multi

... Figure 1: Input filtering for the frequent item problem. A filter absorbs much of the input data set and forwards only the remaining items to state-of-theart Space-Saving instance. the heart of the mining problem, but will lead to strong load imbalances in typical data partitioning schemes. In this ...
Isolation Forest
Isolation Forest

... concept of isolation has not been explored in current literature. The use of isolation enables the proposed method, iForest, to exploit sub-sampling to an extent that is not feasible in existing methods, creating an algorithm which has a linear time complexity with a low constant and a low memory re ...
Survey of existing data mining techniques, methods and guidelines
Survey of existing data mining techniques, methods and guidelines

2015 IEEE/ACIS 14th International Conference on Computer and
2015 IEEE/ACIS 14th International Conference on Computer and

WAVELET BASED FEATURE EXTRACTION OF BE STARS SPECTRA
WAVELET BASED FEATURE EXTRACTION OF BE STARS SPECTRA

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Flexible Fault Tolerant Subspace Clustering for Data with Missing

... the missing values to obtain a valid grouping is reasonable. Besides this advantage of Def. 3, the drawback is the constant and thus fixed number of permitted missing values. Though, the subspace clusters hidden in the data can differ w.r.t. their number of objects as well as their number of relevan ...
Real-Time Knowledge Discovery and Dissemination for Intelligence Analysis Bhavani
Real-Time Knowledge Discovery and Dissemination for Intelligence Analysis Bhavani

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K-means clustering

k-means clustering is a method of vector quantization, originally from signal processing, that is popular for cluster analysis in data mining. k-means clustering aims to partition n observations into k clusters in which each observation belongs to the cluster with the nearest mean, serving as a prototype of the cluster. This results in a partitioning of the data space into Voronoi cells.The problem is computationally difficult (NP-hard); however, there are efficient heuristic algorithms that are commonly employed and converge quickly to a local optimum. These are usually similar to the expectation-maximization algorithm for mixtures of Gaussian distributions via an iterative refinement approach employed by both algorithms. Additionally, they both use cluster centers to model the data; however, k-means clustering tends to find clusters of comparable spatial extent, while the expectation-maximization mechanism allows clusters to have different shapes.The algorithm has a loose relationship to the k-nearest neighbor classifier, a popular machine learning technique for classification that is often confused with k-means because of the k in the name. One can apply the 1-nearest neighbor classifier on the cluster centers obtained by k-means to classify new data into the existing clusters. This is known as nearest centroid classifier or Rocchio algorithm.
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