2021
DOI: 10.1002/cb.1996
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Dirichlet implications for portfolio management

Abstract: We extend the utility of Goodhardt's negative binomial distribution-Dirichlet model to demonstrate how it can be used to support portfolio decisions relating to retail assortments. The approach is based on analysing polarisation of loyalty, φ, obtained via a transformation of the model's S parameter, to investigate loyalty to attributes.Prior research on loyalty to attributes suffers from limitations of method or application, so we develop a full treatment of the statistical basis and analytical methods requir… Show more

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Cited by 5 publications
(1 citation statement)
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References 69 publications
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“…This study extends previous work by Graham and Kennedy (2022) and Dawes et al (2022) examining the buying behaviour of 12,407 continuously reporting households that purchased 853 brands from 56 consumer goods categories in the United Kingdom between 2010 and 2014. We deliberately utilise the same 5‐year period for consistency with the extant research (Dawes et al, 2022; Graham & Kennedy, 2022), which exceeds the normal consumer‐related period (typically 12 months as per Anesbury et al, 2022; Driesener et al, 2022; Naami et al, 2021), and exceeds the anecdotal 3‐year average tenure for brand managers. The longer the period, the more likely that ultra‐light buyers are included in the analysis as a non‐buyer in a 1‐year period could be classified as an ultra‐light buyer in a 5‐year period.…”
Section: Methodsmentioning
confidence: 99%
“…This study extends previous work by Graham and Kennedy (2022) and Dawes et al (2022) examining the buying behaviour of 12,407 continuously reporting households that purchased 853 brands from 56 consumer goods categories in the United Kingdom between 2010 and 2014. We deliberately utilise the same 5‐year period for consistency with the extant research (Dawes et al, 2022; Graham & Kennedy, 2022), which exceeds the normal consumer‐related period (typically 12 months as per Anesbury et al, 2022; Driesener et al, 2022; Naami et al, 2021), and exceeds the anecdotal 3‐year average tenure for brand managers. The longer the period, the more likely that ultra‐light buyers are included in the analysis as a non‐buyer in a 1‐year period could be classified as an ultra‐light buyer in a 5‐year period.…”
Section: Methodsmentioning
confidence: 99%