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A Frequent Concepts Based Document Clustering Algorithm
A Frequent Concepts Based Document Clustering Algorithm

IOSR Journal of Computer Engineering (IOSR-JCE)
IOSR Journal of Computer Engineering (IOSR-JCE)

... against compromised mobile nodes, which often carry the private keys. Integrity validation using redundant information (from different nodes), such as those being used in secure routing, also relies on the trustworthiness of other nodes, which could likewise be a weak link for sophisticated attacks. ...
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The Conjugate Gradient Method

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Communication-Efficient Privacy-Preserving Clustering

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Finding and Visualizing Subspace Clusters of High Dimensional

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An Online and Approximate Solver for POMDPs with Continuous

... Key to the tremendous advances in both offline and online POMDP-based planning is the use of sampling to trade optimality with approximate optimality in exchange for speed. Sampling based planners reduce the complexity of planning in the belief space B by representing B as a set of sampled beliefs a ...
ON SELECTING REGRESSORS TO MAXIMIZE THEIR
ON SELECTING REGRESSORS TO MAXIMIZE THEIR

android short messages filtering for bahasa using
android short messages filtering for bahasa using

... developed a system that could classify SMS between SMS spam with not spam (ham) in Bahasa (Indonesian Language). This system conducted with Multinomial Naïve Bayes classification with the feature weighting Term Frequency - Inverse Document Frequency (TF-IDF). Before the classification, data had been ...
Arrhenius Exponential
Arrhenius Exponential

DATA MINING LAB MANUAL
DATA MINING LAB MANUAL

The Nearest Sub-class Classifier: a Compromise between the
The Nearest Sub-class Classifier: a Compromise between the

What Is Clustering
What Is Clustering

... Grouping data based on probability density models: based on how many (possibly weighted) features are the same. COBWEB (Fisher’87) Assumption: The probability distribution on different attributes are independent of each other --- This is often too strong because correlation may exist between attribu ...
Yannis_Kevrekidis-Presentation
Yannis_Kevrekidis-Presentation

... The nonlinear partial differential equations of mass, momentum, energy, Species and charge transport…. can be solved in terms of functions of limited differentiability, no more than the physics warrants, rather than the analytic functions of classical analysis… ….. basis sets consisting of low-order ...
A Novel Approach for Association Rule Mining using Pattern
A Novel Approach for Association Rule Mining using Pattern

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Chi-square-based Scoring Function for Categorization of MEDLINE
Chi-square-based Scoring Function for Categorization of MEDLINE

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Matching a Distribution by Matching Quantiles

A Framework for Categorize Feature Selection Algorithms
A Framework for Categorize Feature Selection Algorithms

... Bulletin de la Société Royale des sciences de Liège, Vol. 85, 2016, p. 850 - 862 are applied in methods of feature selection: (i) independent criteria: They are independently of the algorithm used. The main types of these criteria are: 1) distance measure, also known as separatability, provides a m ...
Recommending Random Walks - Computer Science, UC Davis
Recommending Random Walks - Computer Science, UC Davis

A Bayes Optimal Approach for Partitioning the Values of Categorical
A Bayes Optimal Approach for Partitioning the Values of Categorical

The Needles-In-Haystack Problem - The University of Texas at Dallas
The Needles-In-Haystack Problem - The University of Texas at Dallas

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Basic Clustering Concepts & Algorithms

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Data Mining and Knowledge Discovery Practice notes: Numeric

... 7. Why does Naïve Bayes work well (even if independence assumption is clearly violated)? 8. What are the benefits of using Laplace estimate instead of relative frequency for probability estimation in Naïve Bayes? ...
Missing Data in Educational Research: A Review of Reporting
Missing Data in Educational Research: A Review of Reporting

... city. Assuming these factors were unrelated to other measured variables such as socioeconomic status, the observed scores represent a random sample of the hypothetically complete data set. In certain circumstances MCAR missing data might even be a purposive byproduct of the data collection procedure ...
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Expectation–maximization algorithm



In statistics, an expectation–maximization (EM) algorithm is an iterative method for finding maximum likelihood or maximum a posteriori (MAP) estimates of parameters in statistical models, where the model depends on unobserved latent variables. The EM iteration alternates between performing an expectation (E) step, which creates a function for the expectation of the log-likelihood evaluated using the current estimate for the parameters, and a maximization (M) step, which computes parameters maximizing the expected log-likelihood found on the E step. These parameter-estimates are then used to determine the distribution of the latent variables in the next E step.
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