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Author: K. Taylor
Publisher: Createspace Independent Publishing Platform
ISBN: 9781545247303
Category :
Languages : en
Pages : 416
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Book Description
Cluster analisys is a set of unsupervised learning techniques to find natural groupings and patterns in data. Cluster analysis or clustering is the task of grouping a set of objects in such a way that objects in the same group (called a cluster) are more similar (in some sense or another) to each other than to those in other groups (clusters). It is a main task of exploratory data mining, and a common technique for statistical data analysis, used in many fields, including machine learning, pattern recognition, image analysis, information retrieval, bioinformatics, data compression, and computer graphics. Cluster analysis, also called segmentation analysis or taxonomy analysis, partitions sample data into groups or clusters. Clusters are formed such that objects in the same cluster are very similar, and objects in different clusters are very distinct. MATLAB Statistics and Machine Learning Toolbox provides several clustering techniques and measures of similarity (also called distance measures) to create the clusters. Additionally, cluster evaluation determines the optimal number of clusters for the data using different evaluation criteria. Cluster visualization options include dendrograms and silhouette plots. Besides the term clustering, there are a number of terms with similar meanings, including automatic classification, numerical taxonomy, and typological analysis. The subtle differences are often in the usage of the results: while in data mining, the resulting groups are the matter of interest, in automatic classification the resulting discriminative power is of interest. The more important topics in this book are de following: Cluster analisys. Hierarchical clustering Cluster analisys. Non hierarchical clustering Cluster analisys. Gaussian mixture models and hidden markov models Cluster analisys. Nearest neighbors. KNN classifiers Cluster visualization and evaluation Cluster data with neural networks Cluster with self-organizing map neural network Self-organizing maps. Functions Competitive neural networks Competitive layers Classify patterns with a neural network Functions for pattern recognition and classification Classification with neural networks. Examples Autoencoders and clustering with neural networks. Examples Self-organizing networks. Examples
Author: K. Taylor
Publisher: Createspace Independent Publishing Platform
ISBN: 9781545247303
Category :
Languages : en
Pages : 416
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Book Description
Cluster analisys is a set of unsupervised learning techniques to find natural groupings and patterns in data. Cluster analysis or clustering is the task of grouping a set of objects in such a way that objects in the same group (called a cluster) are more similar (in some sense or another) to each other than to those in other groups (clusters). It is a main task of exploratory data mining, and a common technique for statistical data analysis, used in many fields, including machine learning, pattern recognition, image analysis, information retrieval, bioinformatics, data compression, and computer graphics. Cluster analysis, also called segmentation analysis or taxonomy analysis, partitions sample data into groups or clusters. Clusters are formed such that objects in the same cluster are very similar, and objects in different clusters are very distinct. MATLAB Statistics and Machine Learning Toolbox provides several clustering techniques and measures of similarity (also called distance measures) to create the clusters. Additionally, cluster evaluation determines the optimal number of clusters for the data using different evaluation criteria. Cluster visualization options include dendrograms and silhouette plots. Besides the term clustering, there are a number of terms with similar meanings, including automatic classification, numerical taxonomy, and typological analysis. The subtle differences are often in the usage of the results: while in data mining, the resulting groups are the matter of interest, in automatic classification the resulting discriminative power is of interest. The more important topics in this book are de following: Cluster analisys. Hierarchical clustering Cluster analisys. Non hierarchical clustering Cluster analisys. Gaussian mixture models and hidden markov models Cluster analisys. Nearest neighbors. KNN classifiers Cluster visualization and evaluation Cluster data with neural networks Cluster with self-organizing map neural network Self-organizing maps. Functions Competitive neural networks Competitive layers Classify patterns with a neural network Functions for pattern recognition and classification Classification with neural networks. Examples Autoencoders and clustering with neural networks. Examples Self-organizing networks. Examples
Author: Perez Lopez Cesar Perez Lopez
Publisher:
ISBN: 9781678013240
Category :
Languages : en
Pages : 0
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Book Description
Author: A. Vidales
Publisher: Independently Published
ISBN: 9781796764802
Category : Mathematics
Languages : en
Pages : 258
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Book Description
Data science includes a set of statistical techniques that allow extracting the knowledge immersed in the data automatically. One of the fundamental tools in data science are classification techniques. This book develops parametric classification supervised techniques such as decision trees and discriminant analysis models. It also develops non-supervised analysis techniques such as cluster analysis.Cluster analysis, also called segmentation analysis or taxonomy analysis, creates groups, or clusters, of data. Clusters are formed in such a way that objects in the same cluster are very similar and objects in different clusters are very distinct. Measures of similarity depend on the application.Decision trees, or classification trees and regression trees, predict responses to data. To predict a response, follow the decisions in the tree from the root (beginning) node downto a leaf node. The leaf node contains the response. Classification trees give responses that are nominal, such as 'true' or 'false'. Regression trees give numeric responses. Statistics and Machine Learning Toolbox trees are binary. Each step in a prediction involves checking the value of one predictor (variable).Discriminant analysis is a classification method. It assumes that differen classes generate data based on different Gaussian distributions. To train (create) a classifier, the fitting function estimates the parameters of a Gaussian distribution for each class (see "Creating Discriminant Analysis Model" ).-To predict the classes of new data, the trained classifier find the class with the smallest misclassification cost (see "Prediction Using Discriminant Analysis Models").Linear discriminant analysis is also known as the Fisher discriminant, named for its inventor.The naive Bayes classifier is designed for use when predictors are independent of one another within each class, but it appears to work well in practice even when that independence assumption is not valid.
Author: A. Vidales
Publisher:
ISBN: 9781795732093
Category :
Languages : en
Pages : 160
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Book Description
The aim of supervised machine learning is to build a model that makes predictions based on evidence in the presence of uncertainty. A supervised learning algorithm takes a known set of input data and known responses to the data (output) and trains a model to generate reasonable predictions for the response to new data. Supervised learning uses classification and regression techniques to develop predictive models (this book develops classification techniques).Unsupervised learning finds hidden patterns or intrinsic structures in data. It is used to draw inferences from datasets consisting of input data without labeled responses. Clustering is the most common unsupervised learning technique. It is used for exploratory data analysis to find hidden patterns or groupings in data. Applications for clustering include gene sequence analysis, market research, and object recognition.
Author: G. Peck
Publisher: Createspace Independent Publishing Platform
ISBN: 9781979472289
Category :
Languages : en
Pages : 396
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Book Description
This book develops Descriptive Classification Techniques (Cluster Analysis) and Predictive Classification Techniques (Decision Trees, Discriminant Analysis and Naive bayes and Neural Networks). In addition, the book also develops Classification Learner an Neural Network Techniques. Use the Classification Learner app to train models to classify data using supervisedmachine learning. The app lets you explore supervised machine learning interactivelyusing various classifiers. Automatically train a selection of models and help you choose the best model. Modeltypes include decision trees, discriminant analysis, support vector machines, logistic regression, nearest neighbors, and ensemble classification. Neural Network Toolbox provides algorithms, pretrained models, and apps to create, train, visualize, and simulate both shallow and deep neural networks. You can perform classification, regression, clustering, dimensionality reduction, time-series forecasting, and dynamic system modeling and control. The most important content in this book is the following: - Hierarchical Clustering - Similarity Measures - Linkages - Dendrograms - Verify the Cluster Tree - Create Clusters - k-Means Clustering - Introduction to k-Means Clustering - Create Clusters and Determine Separation - Determine the Correct Number of Clusters - Clustering Using Gaussian Mixture Models - Cluster Data from Mixture of Gaussian Distributions - Cluster Gaussian Mixture Data Using Soft Clustering - Parametric Segmentation - Evaluation Models - Performance Curves - ROC Curves - Decision Treess - Prediction Using Classification and Regression Trees - Improving Classification Trees and Regression Trees - Cross Validation - Choose Split Predictor Selection Technique - Control Depth or "Leafiness" - Pruning - Discriminant Analysis Classification - Prediction Using Discriminant Analysis Models - Confusion Matrix and cross valdation - Naive Bayes Segmentation - Data Mining and Machine Learning in MATLAB - Train Classification Models in Classification Learner App - Train Regression Models in Regression Learner App - Train Neural Networks for Deep Learning - Automated Classifier Training - Manual Classifier Training - Parallel Classifier Training - Decision Trees - Discriminant Analysis - Logistic Regression - Support Vector Machines - Nearest Neighbor Classifiers - Ensemble Classifiers - Feature Selection and Feature Transformation Using - Classification Learner App - Investigate Features in the Scatter Plot - Select Features to Include - Transform Features with PCA in Classification Learner - Investigate Features in the Parallel Coordinates Plot - Assess Classifier Performance in Classification Learner - Check Performance in the History List - Plot Classifier Results - Check the ROC Curve - Export Classification Model to Predict New Data - Export the Model to the Workspace to Make Predictions for New Data - Make Predictions for New Data - Train Decision Trees Using Classification Learner App - Train Discriminant Analysis Classifiers Using Classification Learner App - Train Logistic Regression Classifiers Using Classification Learner App - Train Support Vector Machines Using Classification Learner App - Train Nearest Neighbor Classifiers Using Classification Learner App - Train Ensemble Classifiers Using Classification Learner App - Shallow Networks for Pattern Recognition, Clustering and Time Series - Fit Data with a Shallow Neural Network - Classify Patterns with a Shallow Neural Network - Cluster Data with a Self-Organizing Map - Shallow Neural Network Time-Series Prediction and Modeling
Author: C. Scott
Publisher: Createspace Independent Publishing Platform
ISBN: 9781976274305
Category :
Languages : en
Pages : 216
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Book Description
Big data analytics examines large amounts of data to uncover hidden patterns, correlations and other insights. With today's technology, it's possible to analyze your data and get answers from it almost immediately - an effort that's slower and less efficient with more traditional business intelligence solutions. MATLAB has the tools to work with large datasets and apply the necessary data analysis techniques. This book develops the work with Segmentation Techniques: Cluster Analysis and Parametric Classification. Cluster analysis, also called segmentation analysis or taxonomy analysis, partitions sample data into groups or clusters. Clusters are formed such that objects in the same cluster are very similar, and objects in different clusters are very distinct. Statistics and Machine Learning Toolbox provides several clustering techniques and measures of similarity (also called distance measures) to create the clusters. Additionally, cluster evaluation determines the optimal number of clusters for the data using different evaluation criteria. Cluster visualizationoptions include dendrograms and silhouette plots. Hierarchical Clustering groups data over a variety of scales by creating a cluster tree or dendrogram. The tree is not a single set of clusters, but rather a multilevel hierarchy, where clusters at one level are joined as clusters at the next level. This allows you to decide the level or scale of clustering that is most appropriate for your application. The Statistics and Machine Learning Toolbox function clusterdata performs all of the necessary steps for you. It incorporates the pdist, linkage, and cluster functions, which may be used separately for more detailed analysis. The dendrogram function plots the cluster tree. k-Means Clustering is a partitioning method. The function kmeans partitions data into k mutually exclusive clusters, and returns the index of the cluster to which it has assigned each observation. Unlike hierarchical clustering, k-means clustering operates on actual observations (rather than the larger set of dissimilarity measures), and creates a single level of clusters. The distinctions mean that k-means clustering is often more suitable than hierarchical clustering for large amounts of data. Clustering Using Gaussian Mixture Models form clusters by representing the probability density function of observed variables as a mixture of multivariate normal densities. Mixture models of the gmdistribution class use an expectation maximization (EM) algorithm to fit data, which assigns posterior probabilities to each component density with respect to each observation. Clusters are assigned by selecting the component that maximizes the posterior probability. Clustering using Gaussian mixture models is sometimes considered a soft clustering method. The posterior probabilities for each point indicate that each data point has some probability of belonging to each cluster. Like k-means clustering, Gaussian mixture modeling uses an iterative algorithm that converges to a local optimum. Gaussian mixture modeling may be more appropriate than k-means clustering when clusters have different sizes and correlation within them. Discriminant analysis is a classification method. It assumes that different classes generate data based on different Gaussian distributions. Linear discriminant analysis is also known as the Fisher discriminant, named for its inventor Classification is a type of supervised machine learning in which an algorithm "learns" to classify new observations from examples of labeled data. To explore classification models interactively, use the Classification Learner app. For greater flexibility, you can pass predictor or feature data with corresponding responses or labels to an algorithm-fitting function in the command-line interface.
Author: C Perez
Publisher: Independently Published
ISBN: 9781096862611
Category :
Languages : en
Pages : 218
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Book Description
MATLAB has the tool Neural Network Toolbox (Deep Learning Toolbox from version 18) that provides algorithms, functions, and apps to create, train, visualize, and simulate neural networks. You can perform classification, regression, clustering, dimensionality reduction, time-series forecasting, and dynamic system modeling and control.The toolbox includes convolutional neural network and autoencoder deep learning algorithms for image classification and feature learning tasks. To speed up training of large data sets, you can distribute computations and data across multicore processors, GPUs, and computer clusters using Parallel Computing Toolbox.This book develops statistics and data analysis methods for cluster analysis and pattern recognition with neural networks using MATLAB. the most important topics are the next: CLUSTER DATA WITH NEURAL NETWORKSCLUSTER WITH SELF-ORGANIZING MAP NEURAL NETWORKSELF-ORGANIZING MAPS. FUNCTIONSCOMPETITIVE NEURAL NETWORKSCOMPETITITVE LAYERSCLASSIFY PATTERNS WITH A NEURAL NETWORKFUNCTIONS FOR PATTERN RECOGNITION AND CLASSIFICATIONCLASSIFICATION WITH NEURAL NETWORKS. EXAMPLE
Author: Guojun Gan
Publisher: SIAM
ISBN: 9780898718348
Category : Mathematics
Languages : en
Pages : 488
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Book Description
Cluster analysis is an unsupervised process that divides a set of objects into homogeneous groups. This book starts with basic information on cluster analysis, including the classification of data and the corresponding similarity measures, followed by the presentation of over 50 clustering algorithms in groups according to some specific baseline methodologies such as hierarchical, center-based, and search-based methods. As a result, readers and users can easily identify an appropriate algorithm for their applications and compare novel ideas with existing results. The book also provides examples of clustering applications to illustrate the advantages and shortcomings of different clustering architectures and algorithms. Application areas include pattern recognition, artificial intelligence, information technology, image processing, biology, psychology, and marketing. Readers also learn how to perform cluster analysis with the C/C++ and MATLAB programming languages.
Author: Phipps Arabie
Publisher: World Scientific
ISBN: 9789810212872
Category : Mathematics
Languages : en
Pages : 508
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Book Description
At a moderately advanced level, this book seeks to cover the areas of clustering and related methods of data analysis where major advances are being made. Topics include: hierarchical clustering, variable selection and weighting, additive trees and other network models, relevance of neural network models to clustering, the role of computational complexity in cluster analysis, latent class approaches to cluster analysis, theory and method with applications of a hierarchical classes model in psychology and psychopathology, combinatorial data analysis, clusterwise aggregation of relations, review of the Japanese-language results on clustering, review of the Russian-language results on clustering and multidimensional scaling, practical advances, and significance tests.
Author: G. Peck
Publisher: Createspace Independent Publishing Platform
ISBN: 9781979518987
Category :
Languages : en
Pages : 184
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Book Description
Cluster analysis, also called segmentation analysis or taxonomy analysis, partitions sample data into groups or clusters. Clusters are formed such that objects in the same cluster are very similar, and objects in different clusters are very distinct. Statistics and Machine Learning Toolbox provides several clustering techniques and measures of similarity (also called distance measures) to create the clusters. Additionally, cluster evaluation determines the optimal number of clusters for the data using different evaluation criteria. Cluster visualization options include dendrograms and silhouette plots. "Hierarchical Clustering" groups data over a variety of scales by creating a cluster tree or dendrogram. The tree is not a single set of clusters, but rather a multilevel hierarchy, where clusters at one level are joined as clusters at the next level. This allows you to decide the level or scale of clustering that is most appropriate for your application. The Statistics and Machine Learning Toolbox function clusterdata performs all of the necessary steps for you. It incorporates the pdist, linkage, and cluster functions, which may be used separately for more detailed analysis. The dendrogram function plots the cluster tree. "k-Means Clustering" is a partitioning method. The function kmeans partitions data into k mutually exclusive clusters, and returns the index of the cluster to which it has assigned each observation. Unlike hierarchical clustering, k-means clustering operates on actual observations (rather than the larger set of dissimilarity measures), and creates a single level of clusters. The distinctions mean that k-means clustering is often more suitable than hierarchical clustering for large amounts of data. "Clustering Using Gaussian Mixture Models" form clusters by representing the probability density function of observed variables as a mixture of multivariate normal densities. Mixture models of the gmdistribution class use an expectation maximization (EM) algorithm to fit data, which assigns posterior probabilities to each component density with respect to each observation. Clusters are assigned by selecting the component that maximizes the posterior probability. Clustering using Gaussian mixture models is sometimes considered a soft clustering method. The posterior probabilities for each point indicate that each data point has some probability of belonging to each cluster. Like k-means clustering, Gaussian mixture modeling uses an iterative algorithm that converges to a local optimum. Gaussian mixture modeling may be more appropriate than k-means clustering when clusters have different sizes and correlation within them. Neural Network Toolbox provides algorithms, pretrained models, and apps to create, train, visualize, and simulate both shallow and deep neural networks. You can perform classification, regression, clustering, dimensionality reduction, time-series forecasting, and dynamic system modeling and control. This book develops Cluster Techniques: Hierarchical Clustering, k-Means Clustering, Clustering Using Gaussian Mixture Models and Clustering using Neural Networks. The most important content in this book is the following: - Hierarchical Clustering - Algorithm Description - Similarity Measures - Linkages - Dendrograms - Verify the Cluster Tree - Create Clusters - k-Means Clustering - Create Clusters and Determine Separation - Determine the Correct Number of Clusters - Avoid Local Minima - Clustering Using Gaussian Mixture Models - Cluster Data from Mixture of Gaussian Distributions - Cluster Gaussian Mixture Data Using Soft Clustering - Tune Gaussian Mixture Models - Shallow Networks for Pattern Recognition, Clustering and Time Series - Fit Data with a Shallow Neural Network - Classify Patterns with a Shallow Neural Network - Cluster Data with a Self-Organizing Map - Shallow Neural Network Time-Series Prediction and Modeling
