ceilings

Ceilings to use for the <code><a rd-options="" href="/link/nca?package=NCA&version=3.0.3" data-mini-rdoc="NCA::nca">nca</a></code> or <code><a rd-options="" href="/link/nca_analysis?package=NCA&version=3.0.3" data-mini-rdoc="NCA::nca_analysis">nca_analysis</a></code> methods 
&gt; nca(data, c(1, 2), 3, ceilings=c('ols', 'ce_fdh', 'cr_fdh'))<table><tr><td>
</td>
<td></td>
</tr><tr><td></td>
<td></td>
</tr><tr><td></td>
<td></td>
</tr><tr><td></td>
<td>
Ceiling Technique </td>
</tr><tr><td> Name</td>
<td>lh </td>
</tr><tr><td> Low-High </td>
<td>
cols </td>
</tr><tr><td> Corrected Ordinary Least Squares </td>
<td>
qr </td>
</tr><tr><td> Quantile Regression </td>
<td>
sfa </td>
</tr><tr><td> Stochastic Frontier Analysis </td>
<td>
ce_vrs </td>
</tr><tr><td> Ceiling Envelopment with Varying Return to Scale </td>
<td>
cr_vrs </td>
</tr><tr><td> Ceiling Regression with Varying Return to Scale </td>
<td>
ce_fdh </td>
</tr><tr><td> Ceiling Envelopment with Free Disposal Hull </td>
<td>
cr_fdh </td>
</tr><tr><td> Ceiling Regression with Free Disposal Hull </td>
<td>
</td>
</tr></table>

Parameter

Performs a Necessary Condition Analysis (NCA). (Dul, J. 2016. Necessary Condition Analysis (NCA). ''Logic and Methodology of 'Necessary but not Sufficient' causality." Organizational Research Methods 19(1), 10-52,
<http://journals.sagepub.com/doi/abs/10.1177/1094428115584005>).
NCA identifies necessary (but not sufficient) conditions in datasets, where x causes (e.g. precedes) y. Instead of drawing a regression line ''through the middle of the data'' in an xy-plot, NCA draws the ceiling line. The ceiling line y = f(x) separates the area with observations from the area without observations.
(Nearly) all observations are below the ceiling line: y <= f(x). The empty zone is in the upper left hand corner of the xy-plot (with the convention that the x-axis is ''horizontal'' and the y-axis is ''vertical'' and that values increase ''upwards'' and ''to the right''). The ceiling line is a (piecewise) linear non-decreasing line: a linear step function or a straight line. It indicates which level of x (e.g. an effort or input) is necessary but not sufficient for a (desired) level of y (e.g. good performance or output). A quick start guide for using this package can be found here: <http://repub.eur.nl/pub/78323/> or <https://ssrn.com/abstract=2624981>.

ceilings: a set of all available ceiling techniques

Description

Arguments




	Ceiling Technique
Name	lh
Low-High	cols
Corrected Ordinary Least Squares	qr
Quantile Regression	sfa
Stochastic Frontier Analysis	ce_vrs
Ceiling Envelopment with Varying Return to Scale	cr_vrs
Ceiling Regression with Varying Return to Scale	ce_fdh
Ceiling Envelopment with Free Disposal Hull	cr_fdh
Ceiling Regression with Free Disposal Hull