• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
BlueBRIDGE Competitive Call – Data management services for
BlueBRIDGE Competitive Call – Data management services for

data mining for teleconnections in global climate datasets
data mining for teleconnections in global climate datasets

... 2.1 Data mining, spatial clustering, and association rules Data mining means to “mine” interesting patterns in large amount of data. In geographic science, these data contain temporal data (often time-series data) and spatial data (often in raster format). Spatial-temporal data mining is a research ...
COMPARATIVE STUDY OF DATA MINING ALGORITHMS Gabriel
COMPARATIVE STUDY OF DATA MINING ALGORITHMS Gabriel

... candidate sets. However, in situations with prolific frequent patterns, long patterns, or quite low minimum support thresholds, an Apriori-like algorithm may still suffer from the following two nontrivial costs:  It is costly to handle a huge number of candidate sets. For example, if there are 104 ...
Density Based Data Clustering
Density Based Data Clustering

Ontology-based Distance Measure for Text Clustering
Ontology-based Distance Measure for Text Clustering

Subspace Clustering and Temporal Mining for Wind
Subspace Clustering and Temporal Mining for Wind

Predicting Globally and Locally: A Comparison of Methods for Vehicle Trajectory Prediction
Predicting Globally and Locally: A Comparison of Methods for Vehicle Trajectory Prediction

... and other probabilistic methods that predict paths accurately. However, most methods rely on local structure of data, and use many extra features to improve prediction accuracy. In this paper we use only the basic spatio-temporal data stream. We advance the state-of-the-art by proposing the LapStrat ...
Data Mining Techniques to Find Out Heart Diseases: An
Data Mining Techniques to Find Out Heart Diseases: An

... the Cleveland Clinic Foundation, Hungarian Institute of Cardiology, V.A. Medical Center and University Hospital of Switzerland. It provides 920 records in total. Originally, the database had 76 raw attributes. However, all of the published experiments only refer to 13 of these: Age, Sex, P, Trstbps, ...
Analysis of Student Result Using Clustering Techniques
Analysis of Student Result Using Clustering Techniques

... guideline for higher educational system to improve their decision-making processes. It can be used to analyze the existing work, identifying existing gaps and further works. The researchers may use the model to identify the existing area of research in the field of data mining in higher educational ...
Eigen decomposition, k-means, object oriented implementation and
Eigen decomposition, k-means, object oriented implementation and

a subspace clustering of high dimensional data
a subspace clustering of high dimensional data

... overlapping problem but also limits the information loss to cope with the data coverage problem. The highdimensional data is inherently more complex in clustering, classification, and similarity search. It produces identical results irrespective of the order in which input records are presented and ...
An Accelerated MapReduce-based K
An Accelerated MapReduce-based K

... clustering methods. In this context, several parallel clustering methods have been designed in the literature [2, 4, 10, 15, 17, 18, 20, 24]. Most of these methods use the MapReduce [5], which is a programming model for processing large scale data by exploiting the parallelism among a cluster of mac ...
a unified theory of data mining based on
a unified theory of data mining based on

... This is the standard way of representing graph data, namely by simply listing the set of edges that make up the graph. The same graph can be modeled (more efficiently?) as an Index on E(N,N): E(N,Nset) = {(n,Nsetn)|nN, Nsetn≡Set of nodes related to n} Then, if there are many edges, it may be more e ...
from wheatonma.edu - CS Home
from wheatonma.edu - CS Home

... distance matrix and Prim’s algorithm run in O(n2 ) complexity, and yet the ordering can be considered optimal. So in contrast to the 2D arrangement, which by Ankerst et al. [8] was shown to be NP-hard, this problem actually is easier in 3 dimensions due to the extra degree of freedom. This approach ...
Compiler Techniques for Data Parallel Applications With Very Large
Compiler Techniques for Data Parallel Applications With Very Large

Introduction to Machine Learning for Category Representation
Introduction to Machine Learning for Category Representation

A Cube Model for Web Access Sessions and Cluster Analysis
A Cube Model for Web Access Sessions and Cluster Analysis

Constraint-based Subgraph Extraction through Node Sequencing
Constraint-based Subgraph Extraction through Node Sequencing

Automated interpretation of 3D laserscanned point clouds for plant organ segmentation
Automated interpretation of 3D laserscanned point clouds for plant organ segmentation

... A major part of the present work consists of providing metrics for comparison of histograms obtained from 3D laser point clouds, and using them for unsupervised learning for automated classification or clustering of plant organs. A common and widely used measure is the Euclidean distance, which is d ...
A Density-based Hierarchical Clustering Method for Time Series
A Density-based Hierarchical Clustering Method for Time Series

A Preview on Subspace Clustering of High Dimensional Data
A Preview on Subspace Clustering of High Dimensional Data

SRM UNIVERSITY FACULTY OF ENGINEERING AND
SRM UNIVERSITY FACULTY OF ENGINEERING AND

... All  5 units  ...
Exploring Constraints Inconsistence for Value Decomposition and
Exploring Constraints Inconsistence for Value Decomposition and

Android API Client for Fon11.com Literature Survey
Android API Client for Fon11.com Literature Survey

... from existing databases.  Stresses both query-optimization and data-management components as well as extensions such as language primitives.  Data-Mining query invites the system to decide which portion of data to focus.  Naïve implementations will result in execution of large decision-support qu ...
Clustering - upatras eclass
Clustering - upatras eclass

... 185,72: distance from cluster 1 = sqrt( (182-185)^2 + (70.6-72)^2) = 3.31 (PUT in this cluster) 185,72: distance from cluster 2 = sqrt( (169-185)^2 + (58-72)^2) = 21.26 170, 56: distance from cluster 1 = sqrt( (182-170)^2 + (70.6-56)^2) = 18.89 170, 56: distance from cluster 2 = sqrt( (169-170)^2 + ...
< 1 ... 95 96 97 98 99 100 101 102 103 ... 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.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report