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Monthly Archives: November 2006
Java tools and libraries
JScience tools are free java routines developed for the broad scientific community interested in coding scientific applications. Core modules addressing areas such as mathematics, physics, nerual networks, biology and others are in active developement. Details on what is available and … Continue reading
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SOCR educational stats software
Educational statistical software has been an area for tinkering for some time. All sorts of approaches have been taken to explore what works and what doesn’t. SOCR is a freely available web resource for statistical educational purposes. The electronic online … Continue reading
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Regression Methods via ARC
ARC is a framework for the exploration and graphical display of regression model structure and diagnostics. Focus is placed on understanding the conditional mean and variance functions, model structural dimension, nonlinearity, curvature, smoothing, transformation and model assessment. The uniqueness of … Continue reading
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BootStrapping options
Bootstrap options with tight intergation within some statistical methods have become availabe in recent years in packages such as SAS, Stata, Spss and Splus and Spss/AMos. The degree and ease of use varies greatly. Options to Bootstrap in packages hosting … Continue reading
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Spatial point process modeling via spatstat
Spatial point pattern data are common across many areas of research. Software for extensive modeling is sparse and spread out across many disiplines. spatstat is a unified collection of tools developed from a modern persepective on spatial statistics. spatstat is … Continue reading
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Visualization with XGobi, XGvis & GGobi
High dimensional data presents many problems related to the tasks of viewing and navigating. One of the first stats oriented software package to address these issues was AT&T’s interactive visualization system, Xgobi http://www.research.att.com/areas/stat/xgobi/. Xgobi is not a stats package per … Continue reading
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Network Graph modeling resources in R
Graphical networks are those that can be conceptualized as nodes connected by one or more links. Links may be directed or not. Nodes can represent many things, such as concepts, people, tasks, relationships, etc. Some are referred to as; Social … Continue reading
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Power Analysis – with Piface
Often in the planning stages researchers will need to consider questions about effect and sample sizes needed to support their project and estimation/modeling tasks. Many funding agencies will require justification of sample size planning with Statistical Power methods. Careful attention … Continue reading
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Data Mining the Weka way….
There is no one tool that is considered superior for purposes of Data Mining. Data Mining means different things to different displines and as a result, many solutions to different kinds of problems exist. A simple working definition of Data … Continue reading
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Bayesian Statistics – Bugs PkBugs and GeoBugs
Bayesian Statistics has evolved over the last 30 years or so with explosive growth and wide reaching theoretical contributions. Widespread adoption by applied researchers has been slow due to the lack of software, computational complexity and model formulations real world … Continue reading
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