Description Usage Arguments Details Value References Examples
INTERNAL: A list of named arguments that can be passed into turf
and turf.combos
to control the behavior
and output of the TURF algorithm.
1 |
depth |
Scalar indicating depth of reach, see Markowitz (2005). |
keep |
Scalar indicating the number of combinations of each size to keep in the output object generated by |
mc |
Logical indicating whether or not Monte Carlo simulated subsets of combinations should be substituted for all possible
combinations of n choose k or user-specified combinations. When TRUE, subsets are generated using the method described
by Adler, et al. (2010), only when |
nsims |
Scalar indicating the number of combination sets of a given size to generate when |
psims |
Vector of length n indicating the probabilities of sampling each item into a combination set when |
sort |
Character indicating sort order of TURF output: "d" (default) causes combinations to be sorted in descending order of
reach, then frequency; "a" causes combinations to be sorted in ascending order of reach, then frequency; "n" leaves combinations
unsorted (i.e., they remain in the same order as the rows in each element of |
Defaults set by this function may be modified by specifying any of the arguments as name-value pairs in place of the (...)
argument when calling turf
or turf.combos
. It is never necessary to call turf.args
directly.
A list consisting of the named arguments.
Adler, T.J., Smith, C. & Dumont, J. 2010. Optimizing product portfolios using discrete choice modeling and TURF. In: S. Hess, A. Daly (Eds), Choice modeling: the state-of-the-art and the state-of-practice; proceedings from the Inaugural International Choice Modeling Conference. Emerald Publishing Group Ltd., pp. 485-497.
Krieger, A.M. & Green, P.E. 2000. Turf revisited: Enhancements to toal unduplicated reach and frequency analysis. Marketing Research, 12, 30-36.
Markowitz, L. 2005. Going beyond TURF to complement and extend existing product lines. Ipsos-Insight, November 2005.
Miaoulis, G., Free, V. & Parsons, H. 1990. TURF: A new planning approach for product line extensions. Marketing Research, March, pp. 28-40.
1 2 | ##INTERNAL USE ONLY
|
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.