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Project Proposal presentation (10 min)
Project Proposal presentation (10 min)

... Prediction Predictive variance ...
Nearest Neighbor - UCLA Computer Science
Nearest Neighbor - UCLA Computer Science

... Idea: pre-processing the data by devising a data structure (e.g. ring-cover tree) to speed up the searchings. Designed for stored data only. Time for update the pre-processing step depends on size of data set, which may be infinite. ...
DBSCAN (Density Based Clustering Method with
DBSCAN (Density Based Clustering Method with

... instance, be done with the help of clustering algorithms, which clumps similar data together into different clusters. However, using clustering algorithms involves some problems: It can often be difficult to know which input parameters that should be used for a specific database, if the user does no ...
Clustering Algorithms
Clustering Algorithms

A DYNAMIC CLUSTERING TECHNIQUE USING MINIMUM- SPANNING TREE , N. Madhusudana Rao
A DYNAMIC CLUSTERING TECHNIQUE USING MINIMUM- SPANNING TREE , N. Madhusudana Rao

... for data analysis in various fields such as data mining [1], computational biology [2] and many more. Gene expression data analysis has been extensively studied for finding genes with similar expression patterns (co-expressed genes) from DNA microarray data [3]. A number of clustering algorithms [4, ...
Data Mining Bizatch
Data Mining Bizatch

Introduction to clustering techniques - IULA
Introduction to clustering techniques - IULA

Karishma Agrawal
Karishma Agrawal

... § Conducted classification of water pumps in different categories, prioritizing identification of pumps that need repair. § Dealt with skewed class distribution and features with extremely high arity. § Used Random Forest for final model with appropriate operating point to minimize false positive ...
Clustering Time Series Data An Evolutionary
Clustering Time Series Data An Evolutionary

... 2. By finding a good representation for clustering time series dataset.  The fitness function will be considered a similarity measure of time series ...
A Data Mining Course for Computer Science Primary Sources and
A Data Mining Course for Computer Science Primary Sources and

... “The non-trivial discovery of novel, valid, comprehensible and potentially useful patterns from data” (Fayyad et al) ...
This is a draft - DLINE Portal Home
This is a draft - DLINE Portal Home

... 453* - Prefetching and Caching ratio Model for WWW Mining on Usage Items (khushboo hemnani) 380*- Detection of Type 2 Diabetes Mellitus Disease with Data Mining Approach Using Support Vector Machine (Bayu Adhi Tama) 152*- Hybrid Apriori Algorithm: An Efficient Approach to Find Frequent Itemsets (Sau ...
Weekly Project Dashboard - dr-oh
Weekly Project Dashboard - dr-oh

... Bhaduri et al, 2008, Distributed Decision-Tree Induction in Peer-toPeer Systems. Statistical Analysis and Data Mining, 1, 85-103 Ran Wolff and Assaf Schuster, Associate Rule Mining in Peer-to-Peer System, IEEE Transactions on Systems, Man and Cybernetics- Part B, Vol 34, ...
A Genetic Categorical Data k Guojun Gan, Zijiang Yang, and Jianhong Wu
A Genetic Categorical Data k Guojun Gan, Zijiang Yang, and Jianhong Wu

... two successive values of the L0 loss function are equal. Some difficulties are encountered while using the k-Modes algorithm. One difficulty is that the algorithm can only guarantee a locally optimal solution[6]. To find a globally optimal solution for the k-Modes algorithm, genetic algorithm (GA)[8], or ...
Application of Clustering in Data mining Using Weka Interface
Application of Clustering in Data mining Using Weka Interface

A Cluster Centres Initialization Method for Clustering Categorical
A Cluster Centres Initialization Method for Clustering Categorical

... K-Modes is an extension of K-Means clustering and Chen (2002) introduces an initialization method algorithm, but the working principle of both is same. which is based on the frame of refining. This method Instead of means, the concept of modes are used. By presents a study on applying Bradley’s iter ...
clusters
clusters

Data Visualization and Evaluation for Industry 4.0 using an
Data Visualization and Evaluation for Industry 4.0 using an

... data object x (�) to add a new cluster centroid at this location. The centroids will be removed (lines 8-10) by repeatedly clicking on them. After adding one more centroid, the cluster algorithm will (re-) assign the data points to all centroids available (lines 12– 14). In lines 16–25 the centroids ...
NÁZEV ČLÁNKU [velikost14 pt]
NÁZEV ČLÁNKU [velikost14 pt]

A Spatiotemporal Data Mining Framework for
A Spatiotemporal Data Mining Framework for

... We collected multiple air quality data from TCEQ’s (Texas Commission on Environmental Quality) website. TCEQ uses a network of 44 monitoring stations in the HGB area which covers the longitude of [-95.8070, -94.7870] and the latitude of [29.0108, 30.7440]. It collects the ground-level ozone concentr ...
IOSR Journal of Computer Engineering (IOSR-JCE)
IOSR Journal of Computer Engineering (IOSR-JCE)

streamMiningPfahringerLesson1
streamMiningPfahringerLesson1

slides - UCLA Computer Science
slides - UCLA Computer Science

An Evaluation of Two Clustering Algorithms in Data Mining
An Evaluation of Two Clustering Algorithms in Data Mining

... Clustering : In this study, our attention is focused on two clustering algorithms. Clustering is alternatively referred to as unsupervised learning or segmentation [1]. It can be thought of as partitioning or segmenting the data into groups that might or might not be disjoint. The clustering is usua ...
slides - UCLA Computer Science
slides - UCLA Computer Science

... Idea: pre-processing the data by devising a data structure (e.g. ring-cover tree) to speed up the searchings. Designed for stored data only. Time for update the pre-processing step depends on size of data set which may be infinite. ...
Survey of K means Clustering and Hierarchical Clustering
Survey of K means Clustering and Hierarchical Clustering

< 1 ... 149 150 151 152 153 154 155 156 157 ... 169 >

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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