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Steven F. Ashby Center for Applied Scientific Computing
Steven F. Ashby Center for Applied Scientific Computing

... Graph-Based clustering uses the proximity graph – Start with the proximity matrix – Consider each point as a node in a graph – Each edge between two nodes has a weight which is the proximity between the two points – Initially the proximity graph is fully connected – MIN (single-link) and MAX (comple ...
A Clustering Method Based on Nonnegative - UTK-EECS
A Clustering Method Based on Nonnegative - UTK-EECS

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... – Placing the instance in the best existing category – Adding a new category containing only the instance – Merging of two existing categories into a new one and adding the instance to that category – Splitting of an existing category into two and placing the instance in the best new resulting categ ...
IRKM Lab
IRKM Lab

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A Study on Market Basket Analysis Using a Data Mining
A Study on Market Basket Analysis Using a Data Mining

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A Clustering based Discretization for Supervised Learning
A Clustering based Discretization for Supervised Learning

... instance space. Global methods [6], on the other hand, use the entire instance space and forms a mesh over the entire n-dimensional continuous instance space, where each feature is partitioned into regions independent of other attributes. • Static discretization methods require some parameter, k, in ...
AE044209211
AE044209211

... of age, salary, married, unmarried and the country used in this study as in fig 4. We determine the high quality of the clustering solutions that was found, their explanatory power, and proposed model’s good scalability. GMM method has good accuracy, uses a single tunable parameter, and can successf ...
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AP26261267

Comparative Study of Different Data Mining Prediction
Comparative Study of Different Data Mining Prediction

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Resolution-based Outlier Mining and its Applications
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International Journal of Science, Engineering and Technology
International Journal of Science, Engineering and Technology

... The k-nearest neighbor (k-NN) technique, due to its interpretable nature, is a simple and very intuitively appealing method to address classification problems. However, choosing an appropriate distance function for k-NN can be challenging and an inferior choice can make the classifier highly vulnera ...
PhoCA: An extensible service-oriented tool for Photo Clustering
PhoCA: An extensible service-oriented tool for Photo Clustering

... Regarding points of interest detection, most of the approaches cluster the photos based on their geographic distances. The assumption is that many photos taken close to each other tend to indicate points of interest. The most common algorithms found in the literature for this end are: k-means, mean ...
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Data Mining Process Using Clustering: A Survey

... 2. Hierarchical Clustering Hierarchical clustering builds a cluster hierarchy or, in other words, a tree of clusters, also known as a dendrogram. Every cluster node contains child clusters; sibling clusters partition the points covered by their common parent. Such an approach allows exploring data o ...
MISSING VALUE IMPUTATION USING FUZZY POSSIBILISTIC C
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... based on nearest-neighbor intervals for incomplete data. Since the proposed system does no optimization, it is sensitive to initial guesses. C.H. Huang, H.Y. Kao [11], studied Interval regression analysis with soft-margin reduced support vector machine. The Support Vector Machine (SVM) has shown to ...
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Fuzzy C-Means Clustering of Web Users for Educational Sites

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SISC: A Text Classification Approach Using Semi Supervised Subspace Clustering
SISC: A Text Classification Approach Using Semi Supervised Subspace Clustering

... centroids and based on the distribution of labels in those clusters, we predict the label for a test instance. A similar method has been applied in [12], however, we are not dealing with data streams in this case. So, we train a single classifier model and perform the test with that model as opposed ...
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Different Clustering Techniques – Means for Improved Knowledge
Different Clustering Techniques – Means for Improved Knowledge

... closeness or similarity. Objects are assigned to each cluster with a corresponding membership degree. The algorithm is using validity criteria to determine number of clusters in the data. (Roiger- Geatz 2003) it is stated that “The iData Analyzer (iDA) provides support for business or technical anal ...
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A Surveillance of Clustering Multi Represented Objects
A Surveillance of Clustering Multi Represented Objects

Hierarchical Document Clustering Using Frequent Itemsets
Hierarchical Document Clustering Using Frequent Itemsets

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... 2. Related work In this section, we review the existing work on clustering high-dimensional data, as well as theoretical analysis for Gaussian mixture models and k-means algorithm, the two of the most popular clustering algorithms. Clustering high-dimensional data One common approach to high-dimensi ...
Application based, advantageous K-means Clustering Algorithm in
Application based, advantageous K-means Clustering Algorithm in

... networks in engineering, they are also being applied in the area of management. The two-stage method is a combination of the self-organizing feature maps and the K-means method. After using this method on the basis of Wilk's Lambda and discriminant analysis on the real world data and on the simulati ...
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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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