Cross-referencing other libraries about recmetrics HOT 3 OPEN

hey @itsoum, yes that would be great if you can undertake adding the new metrics. Feel free to email if you need any support. Thanks!

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this is great find. I reviewed both sources and Item similarity is already covered by recmetrics "personalization" metrics. However, Discounted Cumulative Gain (DCG) and normalized Discounted Cumulative Gain (nDCG/NDCG) is likely worth adding to recmetrics. I'll take it down as a feature request.

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@statisticianinstilettos I am using last 6 months Discounted Cumulative Gain (DCG) and normalized Discounted Cumulative Gain (nDCG/NDCG) for evaluation in a problem which looks as a combination of a typical multi-label classification but with order of labels to be important (ranking problem). Here is a nice explanation of them with also some other usefull metrics: https://amitness.com/2020/08/information-retrieval-evaluation/
I am thinking undertake this enhancement issue given that I know the structure of your project because I have commit some metrics in the past and I don't say no to another Hacktoberefest t-shirt :)
Is it ok?

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