Nortonbass_error

Fits Norton Bass curve and estimated RMSE

internal

Various diffusion models to forecast new product growth. Currently
the package contains Bass, Gompertz, Gamma/Shifted Gompertz and Weibull curves. See
Meade and Islam (2006) <doi:10.1016/j.ijforecast.2006.01.005>.

Oliver Schaer

diffusion

Forecast the Diffusion of New Products

Nikolaos Kourentzes

Ivan Svetunkov

Nortonbass_error function

<dl><dt>x</dt>
<dd>matrix with generations</dd>
<dt>param</dt>
<dd>the parameters for curve to estimated</dd>
<dt>gstart</dt>
<dd>optional vector of starting points for the generations</dd>
<dt>flexpq</dt>
<dd>flexible p and q</dd></dl>

Arguments

Oliver Schaer, <a href="/link/info%40oliverschaer.ch?package=diffusion&version=0.4.0" data-mini-rdoc="diffusion::info@oliverschaer.ch">info@oliverschaer.ch</a>

Author

Fits Norton Bass curve and estimated RMSE — Nortonbass_error

<dl>

<dt>x</dt>
<dd>matrix with generations</dd>


<dt>param</dt>
<dd>the parameters for curve to estimated</dd>


<dt>gstart</dt>
<dd>optional vector of starting points for the generations</dd>


<dt>flexpq</dt>
<dd>flexible p and q</dd>

</dl>

Oliver Schaer, <a href='mailto:info@oliverschaer.ch'>info@oliverschaer.ch</a>

Nortonbass_error: Fits Norton Bass curve and estimated RMSE

Description

Usage

Value

Arguments

Author