Card statistics :
0 1 2 3 4
5 6 7 8 9+
0 cards, with 0 unique cards :
This map is based on 200 000 ranked hearthstone games. This coressponds to more than 4 000 000 cards played and recorded by collecto-bot over one year and an half.
Using this dataset we constructed 400 000 series of played cards one for each player in a game. These series were fed to a word2vec embedding [Mikolov, Tomas et al] algorithm (with negative sampling [Goldberg, Yoav; Levy, Omer] and a single soft-plus final layer) to learn 64 dimensional vectors for embeding all the 1600 cards. The final 2d projection was derived from these vectors using a t-sne [Van der Maaten, Laurens ; Hinton, Geoffrey ] with default settings. The code is available on github. The same dataset was used to estimate winrates and frequency of each card.