• 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
A data-driven approach to predict the success of
A data-driven approach to predict the success of

Data Mining in GeoVISTA Studio
Data Mining in GeoVISTA Studio

... weights), the more influence it will have in the subsequent analysis. Default weights are all equal. The user can assign any positive number for a weight. Click the "OK" button after adjusting the weights or simply accepting the default values. SOM Clustering and Coloring Once the "OK" button is pre ...
Dental Data Mining: Potential Pitfalls and Practical Issues
Dental Data Mining: Potential Pitfalls and Practical Issues

... status). Unsupervised methods include hierarchical cluster analysis and k-means; supervised methods include regression, tree models (e.g., classification and regression trees [CART], boosting, bagging, and ensemble methods), multivariate adaptive regression splines, artificial neural networks (ANNs) ...
pptx
pptx

Fraud Detection Model
Fraud Detection Model

Statistical Issues in the Analysis of Neuronal Data
Statistical Issues in the Analysis of Neuronal Data

Possibilistic conditional independence: A similarity
Possibilistic conditional independence: A similarity

... tentative belief networks by using measure of the quality of the distribution implied by the D A G being built. Current approaches use as a quality measure a posteriori probability of the network given the database [6], entropy of the distribution of the final D A G [5] and Minimum Description Lengt ...
Eghbali etal 2017.
Eghbali etal 2017.

Monte Carlo simulation
Monte Carlo simulation

Input dependent misclassification costs for cost
Input dependent misclassification costs for cost

Analogy-based Reasoning With Memory Networks - CEUR
Analogy-based Reasoning With Memory Networks - CEUR

... collections of texts using bootstrapping methods. In the context of script learning, corpora statistics, such as event bi-grams, are used to define a probability distribution over next possible future events [13, 3]. However, such models cannot generalize to situations of new events that have not be ...
A Property & Casualty Insurance Predictive Modeling Process in SAS
A Property & Casualty Insurance Predictive Modeling Process in SAS

... Other model building/fitting methodologies could be utilized to build models in SAS Enterprise Miner including the following three types of models (The descriptions below are attributable to SAS Product Documentation): Decision Tree Model: Decision Tree is a predictive modeling approach which maps o ...
Outlier Detection - Department of Computer Science
Outlier Detection - Department of Computer Science

... – Initially, assume all the data points belong to M – Let Lt(D) be the log likelihood of D at time t – For each point xt that belongs to M explore the affect of moving it to A  Let Lt+1 (D) be the new log likelihood after removing xt  Compute the difference,  = Lt+1(D) – Lt (D)  If  > c (some t ...
Predicting Future Decision Trees from Evolving Data
Predicting Future Decision Trees from Evolving Data

Technical Report TR-2008-11 - George Washington University
Technical Report TR-2008-11 - George Washington University

... answered (Shachter 1988). However, either exact inference or approximate inference is NPhard (Cooper 1990,Dagum and Luby 1993). For Bayesian networks of discrete variables, the most commonly used algorithm is the junction tree algorithm(Lauritzen and Spiegelhalter 1988, Jensen and Lauritzen 1990, Da ...
Prediction with Local Patterns using Cross
Prediction with Local Patterns using Cross

x - Indiana University Bloomington
x - Indiana University Bloomington

... and models developed in these other disciplines. Discovering these relationships can suggest new models or new tools for working with existing models. We will discuss some of these relationships in this chapter, but there are many other cases. For example, prototype and exemplar models of categoriza ...
A Multinomial Clustering Model for Fast Simulation of Computer
A Multinomial Clustering Model for Fast Simulation of Computer

Discovering Communities in Linked Data by Multi-View
Discovering Communities in Linked Data by Multi-View

... citation analysis, the mixture components are the clusters of related papers that we wish to identify. We get cluster assignments from the estimated mixture model by assigning each instance xj to the cluster of highest a posteriori probability argmaxi P (ci |xj ). We introduce the multinomial citati ...
Scalable Algorithms for Distribution Search
Scalable Algorithms for Distribution Search

Adding Data Mining Support to SPARQL via Statistical
Adding Data Mining Support to SPARQL via Statistical

... Our Contributions. We propose a novel extension to SPARQL called SPARQLML to support data mining tasks for knowledge discovery in the Semantic Web. Our extension introduces new keywords to the SPARQL syntax to facilitate the induction of models as well as the use of the model for prediction/classifi ...
Reinforcement Learning and Markov Decision Processes I
Reinforcement Learning and Markov Decision Processes I

... and runs in time subexponential in e and Rmax and exponential in 1/(1-g). (Running time is independent from number of states!) ...
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 ...
S4904131136
S4904131136

Problem Formulation as the Reduction of a Decision
Problem Formulation as the Reduction of a Decision

... simplification is illustrated by the portion of comprehensive decision model shown in Figure 2. In particular, suppose our problem-formulation procedure instantiates PREDNISONE to false for a particular patient. In this case, we can solve the ACYCLOVIR and ARA-A portions of the influence diagram sep ...
< 1 ... 23 24 25 26 27 28 29 30 31 ... 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