probability

Cox Processes

In probability theory the Cox Process aka the doubly stochastic Poisson process is a point process which is a generalisation of a Poisson process that the intensity vaires across a underliying mathematical space (e.g space/time) is itself a stochastic process.

Statistics

Probabilistic Graphical Models

The intention of using graphs is to represent the complex data abstractly, determining strength and direction of relationship between objects. Probabilistic Graphical Models (PGM) are mathematical structures bring together graph and probability theory as a powerful flexible framework to model complex large collections of random variables with complex interactions. There are many fields and numerous applications that through construction of PGM have supported making predictions and decision making under uncertainty.

*Coming Soon*

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Programming

SysOps Administrator Exam

Having completed a cloud computing pilot project (over two years) and having project expirence in development and deployment on the AWS, I am very keen to learn in a more structured approach and fill missing knowledge gaps. I have completed the Developer associate exam and now attempting the SysOps Administrator in preparation for the DevOps professional.

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Statistics

Fitting Linear Regression Part 2

Part One we looked at selecting of regressors through a number of criteria and the process that may be adopted. Part Two will focus on Residual Analysis, Diagnostic Check and Multicollinearity Model Adequacy: Residual Analysis In determining a linear model the usual assumption in the specification are not always guaranteed. For least squares the estimation of parameters as well as prediction…

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Statistics

Fitting Linear Regression Models

Model Selection and Checking To determine the ‘best’ regression equation from a multiple regression model that involves k regressors, X1,X2,X3 … Xk, there exist contradictory criteria. We should include as many regressors as possible to be useful. We should exclude as many regressors to save cost in collecting data. SELECTING CRITERIA Selecting the best regression model (essential regressors) is reasonable compromise…

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