Posts by tais • 11 points

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  Q: How to transform data frame variables into the indexes of a matrix with R?

  I have a data frame with a lot of information and need to rearrange it in another matrix. The data frame is of the type: userID itemID rating 169 242 3 186 302 3 22 377 1 (the matrix has 10,000…

  r matrix

  asked 3 years, 4 months ago tais 11