computefeatures

Compute feature describing prior practice effect.

Computes Logistic Knowledge Tracing ('LKT') which is a general method for tracking human learning in an educational software system. Please see Pavlik, Eglington, and Harrel-Williams (2021) <https://ieeexplore.ieee.org/document/9616435>. 'LKT' is a method to compute features of student data that are used as predictors of subsequent performance. 'LKT' allows great flexibility in the choice of predictive components and features computed for these predictive components. The system is built on top of 'LiblineaR', which enables extremely fast solutions compared to base glm() in R.

Philip I. Pavlik Jr.

Logistic Knowledge Tracing

Luke G. Eglington

computefeatures function

<dl><dt>data</dt>
<dd>copy of main data frame.</dd>
<dt>feat</dt>
<dd>is the feature to be computed.</dd>
<dt>par1</dt>
<dd>nonlinear parameters used for nonlinear features.</dd>
<dt>par2</dt>
<dd>nonlinear parameters used for nonlinear features.</dd>
<dt>index</dt>
<dd>a student by component levels index</dd>
<dt>index2</dt>
<dd>a component levels index</dd>
<dt>par3</dt>
<dd>nonlinear parameters used for nonlinear features.</dd>
<dt>par4</dt>
<dd>nonlinear parameters used for nonlinear features.</dd>
<dt>par5</dt>
<dd>nonlinear parameters used for nonlinear features.</dd>
<dt>fcomp</dt>
<dd>the component name.</dd></dl>

Arguments

computefeatures — computefeatures

<dl>

<dt>data</dt>
<dd>copy of main data frame.</dd>


<dt>feat</dt>
<dd>is the feature to be computed.</dd>


<dt>par1</dt>
<dd>nonlinear parameters used for nonlinear features.</dd>


<dt>par2</dt>
<dd>nonlinear parameters used for nonlinear features.</dd>


<dt>index</dt>
<dd>a student by component levels index</dd>


<dt>index2</dt>
<dd>a component levels index</dd>


<dt>par3</dt>
<dd>nonlinear parameters used for nonlinear features.</dd>


<dt>par4</dt>
<dd>nonlinear parameters used for nonlinear features.</dd>


<dt>par5</dt>
<dd>nonlinear parameters used for nonlinear features.</dd>


<dt>fcomp</dt>
<dd>the component name.</dd>

</dl>

computefeatures: computefeatures

Description

Usage

Value

Arguments