oasis

A dataset containing a small subset of the OASIS Brain Data project. Noise
variables have been added to increase the number of predictors and show the
utility of the sail package.

datasets

Sparse additive interaction learning with the strong heredity property, i.e.,
an interaction is selected only if its corresponding main effects are also included.
Fits a linear model with non-linear interactions via penalized maximum likelihood.
Interactions are limited to a single exposure or environment variable. For more information,
see the website below and the accompanying paper: Bhatnagar et al., "A sparse additive model for
high-dimensional interactions with an exposure variable", 2019, <DOI:10.1101/445304>.

Sahir Bhatnagar

sail

Sparse Additive Interaction Learning

Yi Yang

Celia Greenwood

oasis function

A list with 3 elements:<dl class="dl-horizontal">
<dt>x</dt><dd>a matrix of dimension
 <code>136 x 30</code> with the following colums:<dl class="dl-horizontal">
 <dt>EDUC</dt><dd>Education</dd> <dt>MMSE</dt><dd>Mini-Mental State Exam</dd>
 <dt>eTIV</dt><dd>Estimated Total Intracranial Volume</dd> <dt>nWBV</dt><dd>Normalized
 Whole Brain Volume</dd> <dt>ASF</dt><dd>Atlas scaling factor</dd>
 <dt>noise[1-24]</dt><dd>24 independent standard normal noise variables</dd></dl></dd><dt>y</dt><dd>a
 numeric vector of length 136 representing the right Hippocampal volume for
 each patient</dd><dt>e</dt><dd>a binary 0/1 vector of length 136, representing
 Dementia status. 0: Non-demented, 1: Demented</dd> </dl>

Format

OASIS Brain Data — oasis

A list with 3 elements:<dl class='dl-horizontal'>
<dt>x</dt><dd>a matrix of dimension
 <code>136 x 30</code> with the following colums:<dl class='dl-horizontal'>
 <dt>EDUC</dt><dd>Education</dd> <dt>MMSE</dt><dd>Mini-Mental State Exam</dd>
 <dt>eTIV</dt><dd>Estimated Total Intracranial Volume</dd> <dt>nWBV</dt><dd>Normalized
 Whole Brain Volume</dd> <dt>ASF</dt><dd>Atlas scaling factor</dd>
 <dt>noise[1-24]</dt><dd>24 independent standard normal noise variables</dd></dl></dd><dt>y</dt><dd>a
 numeric vector of length 136 representing the right Hippocampal volume for
 each patient</dd><dt>e</dt><dd>a binary 0/1 vector of length 136, representing
 Dementia status. 0: Non-demented, 1: Demented</dd> </dl>

oasis: OASIS Brain Data

Description

Usage

Arguments

Format

Examples