• 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
Review
Review

... • We think of clustering as a problem of estimating missing data. • The missing data are the cluster labels. • Clustering is only one example of a missing data problem. Several other problems can be formulated as missing data problems. ...
IOSR Journal of Computer Engineering (IOSR-JCE)
IOSR Journal of Computer Engineering (IOSR-JCE)

Model Order Selection for Boolean Matrix Factorization
Model Order Selection for Boolean Matrix Factorization

... the earliest suggestions was the Guttman–Kaiser criterion, dating back to the Fifties (see [41]). In that criterion, one selects those principal vectors that have corresponding principal value greater than 1. It is perhaps not surprising that this simple criterion has shown to perform poorly [41]. A ...
Mathematical Population Genetics
Mathematical Population Genetics

Clustering - Politecnico di Milano
Clustering - Politecnico di Milano

CS 188: Artificial Intelligence Today Uncertainty Probabilities
CS 188: Artificial Intelligence Today Uncertainty Probabilities

... ƒ For all but the smallest distributions, impractical to write out ...
Introduction to Classification, aka Machine Learning
Introduction to Classification, aka Machine Learning

... –  Each example is represented by a set of features, sometimes called attributes –  Each example is to be given a label or class •  Find a model for the label as a function of the values of features. •  Goal: previously unseen examples should be assigned a label as accurately as possible. –  A test ...
Understanding Your Customer: Segmentation Techniques for Gaining
Understanding Your Customer: Segmentation Techniques for Gaining

... often leads to more accurate predictions. The data was over-sampled using the Sample node to retain all BAD observations and a random sample of good observations. The final BAD proportion was increased to 25% from the original 4% BAD rate. Prior to developing predictive models, it is important to sp ...
Introduction to Classification, aka Machine Learning
Introduction to Classification, aka Machine Learning

2. Principles of Data Mining 2.1 Learning from Examples
2. Principles of Data Mining 2.1 Learning from Examples

preprint
preprint

Editing Statistical Records by Neural Networks
Editing Statistical Records by Neural Networks

Diapositiva 1 - Taiwan Evolutionary Intelligence Laboratory
Diapositiva 1 - Taiwan Evolutionary Intelligence Laboratory

Applying Data Mining to Demand Forecasting and Product Allocations
Applying Data Mining to Demand Forecasting and Product Allocations

... [1]. Product demand in a store can depend upon various store attributes, such as size related factors and information about different departments, and shopper attributers such as income, age, education etc., and the product attributes such as brand name. Some other factors such as competition betwee ...
Automation of Data Mining Using Integration Services
Automation of Data Mining Using Integration Services

... process typically involves building several models and testing different scenarios. Rather than build variations on the model ad hoc, you decide to automatically generate multiple related models, varying the parameters systematically for each model. This way you can easily create many models, each u ...
Web Navigation Prediction Using Multiple Evidence Combination and Domain Knowledge
Web Navigation Prediction Using Multiple Evidence Combination and Domain Knowledge

Slide Material for DHS Reverse Site Visit
Slide Material for DHS Reverse Site Visit

slides
slides

Anomaly Detection Techniques for Adaptive Anomaly Driven
Anomaly Detection Techniques for Adaptive Anomaly Driven

An Efficient Learning Procedure for Deep Boltzmann Machines
An Efficient Learning Procedure for Deep Boltzmann Machines

... The architectural limitations of RBMs can be overcome by using them as simple learning modules that are stacked to form a deep, multilayer network. After training each RBM, the activities of its hidden units, when they are being driven by data, are treated as training data for the next RBM (Hinton e ...
Clustering Techniques
Clustering Techniques

Relational Dependency Networks - Knowledge Discovery Laboratory
Relational Dependency Networks - Knowledge Discovery Laboratory

... which makes the approach tractable but removes some of the advantages of reasoning with the full joint distribution. In this paper, we outline relational dependency networks (RDNs), 5 an extension of dependency networks (Heckerman et al., 2000) for relational data. RDNs can represent and reason with ...
Sparse Additive Subspace Clustering
Sparse Additive Subspace Clustering

A Point Process Framework for Relating Neural Spiking Activity to
A Point Process Framework for Relating Neural Spiking Activity to

... then Eq. 2 has the same form as the likelihood function for a GLM under a Bernoulli probability distribution and a logistic link function (Eqs. A9 and A10). Thus, maximum likelihood estimation of model parameters and likelihood analyses can also be carried out using the Bernoulli–GLM framework (see ...
Audio Information Retrieval: Machine Learning Basics Outline
Audio Information Retrieval: Machine Learning Basics Outline

... Pattern classification/supervised learning: From a training set of example patterns with known classification, the systems learns a prediction function. It is applied to new input patterns of unknown classification. The goal is good generalization and to avoid overfitting. Reinforcement learning: Th ...
< 1 ... 10 11 12 13 14 15 16 17 18 ... 58 >

Mixture model

In statistics, a mixture model is a probabilistic model for representing the presence of subpopulations within an overall population, without requiring that an observed data set should identify the sub-population to which an individual observation belongs. Formally a mixture model corresponds to the mixture distribution that represents the probability distribution of observations in the overall population. However, while problems associated with ""mixture distributions"" relate to deriving the properties of the overall population from those of the sub-populations, ""mixture models"" are used to make statistical inferences about the properties of the sub-populations given only observations on the pooled population, without sub-population identity information.Some ways of implementing mixture models involve steps that attribute postulated sub-population-identities to individual observations (or weights towards such sub-populations), in which case these can be regarded as types of unsupervised learning or clustering procedures. However not all inference procedures involve such steps.Mixture models should not be confused with models for compositional data, i.e., data whose components are constrained to sum to a constant value (1, 100%, etc.). However, compositional models can be thought of as mixture models, where members of the population are sampled at random. Conversely, mixture models can be thought of as compositional models, where the total size of the population has been normalized to 1.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report