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Chameleon: Hierarchical Clustering Using Dynamic Modeling
Chameleon: Hierarchical Clustering Using Dynamic Modeling

An Empirical Study of Applications of Data Mining Techniques for
An Empirical Study of Applications of Data Mining Techniques for

... showed how useful data mining can be in higher education in particularly to predict the final performance of student [2], on working on performance, many attributes have been tested, and some of them are found effective on the performance prediction. The job title was the strongest attribute, then t ...
Powerpoint - Wishart Research Group
Powerpoint - Wishart Research Group

Survey on Data Mining Techniques for Diagnosis and
Survey on Data Mining Techniques for Diagnosis and

... method performance shows that it is efficient and scalable for mining both long and short frequent patterns, and is about an order of magnitude faster than the Apriori algorithm. E. CLUSTERING Clustering technique is used to identify the object belong to the cluster or not. If not, then it is identi ...
IOSR Journal of Computer Engineering (IOSR-JCE)
IOSR Journal of Computer Engineering (IOSR-JCE)

... frequent pattern tree and conditional pattern base from database which satisfy the minimum support[4]. FPgrowth traces the set of concurrent items[4]. It suffers from certain disadvantages: FP tree may not fit in main memory and Execution time is large due to complex compact data structure[6]. ...
Slide 1
Slide 1

... similar instances in a dataset ...
Combining Multiple Clusterings Using Evidence Accumulation
Combining Multiple Clusterings Using Evidence Accumulation

... which is not easy to specify in the absence of any prior knowledge about cluster shapes. Additionally, quantitative evaluation of the quality of clustering results is difficult due to the subjective notion of clustering. A large number of clustering algorithms exist [7], [8], [9], [10], [11], yet n ...
A Practical Approach to Classify Evolving Data Streams: Training with Limited Amount of Labeled Data
A Practical Approach to Classify Evolving Data Streams: Training with Limited Amount of Labeled Data

... data points. Recent approaches for semi-supervised clustering incorporated pairwise constraints on top of the unsupervised K -means clustering algorithm and formulated a constraint-based K -means clustering problem [2, 9], which was solved with an Expectation-Maximization (EM) framework. Our approac ...
Temporal Sequence Classification in the Presence
Temporal Sequence Classification in the Presence

... Subsequently, since we are working with a binary tree we know before hand that we will split the dataset D into two partitions, so Dlef t and Dright partitions are created. We then compute the subsequence distance between the shapelet and each training instance T. If the distance obtained is smaller ...
IOSR Journal of Computer Engineering (IOSR-JCE)
IOSR Journal of Computer Engineering (IOSR-JCE)

... phase of the learning process, clustering is used to find out the inherent patterns within the hypertext pages browsed by a user. To find these inherent patterns within the hypertext a simple conceptual clustering algorithm (Hutchinson, 1994) is used. Applying this method eliminates the need for ini ...
Performance Evaluation with K-Mean and K
Performance Evaluation with K-Mean and K

... predictive information from large volumes of data, data mining (DM) techniques are needed. Organizations are starting to realize the importance of data mining in their strategic planning and successful application of DM techniques can be an enormous payoff for the organizations. This paper discusses ...
Subspace Clustering of Microarray Data based on Domain
Subspace Clustering of Microarray Data based on Domain

... – Equi-width bins. Each bin has approximately same size. – Equi-depth bins. Each bin has approximately same number of data elements. – Homogeneity-based bins. The data elements in each bin are similar to each other. In this paper, we use a homogeneity-based bins approach. In particular, we utilize K ...
C - WordPress.com
C - WordPress.com

Question Bank/Assignment
Question Bank/Assignment

3. dataset description - Academic Science,International Journal of
3. dataset description - Academic Science,International Journal of

Customer Segmentation and Profiling for Automobile Retailer:
Customer Segmentation and Profiling for Automobile Retailer:

... of subsets (clusters) is denoted by . Fuzzy clustering methods allow objects to belong to several clusters simultaneously, with different degrees of membership. The data set is thus partitioned into c fuzzy subsets. The discrete nature of hard partitioning also causes analytical and algorithmic intr ...
Data Mining - TU Ilmenau
Data Mining - TU Ilmenau

... 1. Discuss whether or not each of the following activities is a data mining task: (a) Dividing the customers of a company according to their gender. (b) Dividing the customers of a company according to their profitability. (c) Computing the total sales of a company. (d) Sorting a student database bas ...
Association Rule Mining in Horizontally Distributed Databases
Association Rule Mining in Horizontally Distributed Databases

Referral Traffic Analysis: A Case Study of the Iranian Students` News
Referral Traffic Analysis: A Case Study of the Iranian Students` News

... decline any significant relationship between the amount of referral traffic coming from a referrer website and the website's popularity state. Furthermore, the referrer websites of the study fit into three clusters applying K-means Squared Euclidean Distance clustering algorithm. Performance evaluat ...
Decomposing a Sequence into Independent Subsequences Using
Decomposing a Sequence into Independent Subsequences Using

... corresponds to a connected component of the graph. The Dtest approach has a drawback: it can merge two independent components together even when there is only one false connection (not a connection but erroneously detected as a connection) between two vertices across two components. For instance, Fi ...
Scaling Up the Accuracy of Naive-Bayes Classi ers: a Decision
Scaling Up the Accuracy of Naive-Bayes Classi ers: a Decision

Classification of Heart Disease Using K
Classification of Heart Disease Using K

... Property 3 is called as “Triangle in equality”. It states that the shortest distance between any two points is a straight line. Most common distance measures used is Euclidean distance .For continuous variables Z score standardization and min max normalization are used [6]. KNN is used in many appli ...
Data Mining Techniques for Text Mining
Data Mining Techniques for Text Mining

... they are used in business is taking the right decision. There are many favorable problems faced by text mining on the one hand natural language complexity. On the other hand, words can have many meanings but these meanings can be explained in different ways, this give arise certainty. In5 In this pa ...
A Empherical Study on Decision Tree Classification Algorithms
A Empherical Study on Decision Tree Classification Algorithms

... Data from the real world has a lot of discrepancies and inconsistencies that are in need of maintenance and management. Data mining is one of the field in Information Communication Technology (ICT) that can provide a helping hand to manage, make sense and use these huge amounts of data by sorting ou ...
Concept Ontology for Text Classification
Concept Ontology for Text Classification

... choosing one of the tree nodes in the path to the root say , using that estimate to generate the datum EM then maximizes the total likelihood when the choices of estimates made for the various data are unknown The first step in the iterative part is thus the E step and the second one is the M step ...
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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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