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mhahsler / arules

Mining Association Rules and Frequent Itemsets with R
http://mhahsler.github.io/arules
GNU General Public License v3.0
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Several inconsistencies regarding the "ralambrodrainy" measure of interest #54

Closed andreijl closed 5 years ago

andreijl commented 5 years ago

The measure referred to as "ralambrodrainy" seems to be a spelling mistake regarding the names of the authors that wrote the paper Diatta, J., Ralambondrainy, H., & Totohasina, A. (2007). Towards a Unifying Probabilistic Implicative Normalized Quality Measure for Association Rules. Studies in Computational Intelligence, 237–250. doi:10.1007/978-3-540-44918-8_10". During investigating the correlation between rankings of different measures I found that this measure also has a negative or no correlation with most other measures . Especially confidence is highly negatively correlated. This makes me think that there might be something wrong with the implementation.

mhahsler commented 5 years ago

Thank you for reporting this typo. It is now fixed on GitHub. Have a look at the definition of the measure (https://michael.hahsler.net/research/association_rules/measures.html#ralambondrainy). This should explain why you found a neg. correlation.