Description Usage Arguments Value Examples

View source: R/FTRLProx_Hashing.R

Feature Hashing for FTRL-Proximal Algorithm. A wrapper of `hashed.model.matrix`

function in the FeatureHashing package.
Please always use this function to generate sparse matrix for training and prediction.

1 | ```
FTRLProx_Hashing(formula = ~., data, hash.size, signed.hash, verbose = TRUE)
``` |

`formula` |
formula or a character vector of column names (will be expanded to a formula) |

`data` |
a |

`hash.size` |
positive integer. The hash size of feature hashing. |

`signed.hash` |
logical value. Indicating if the hashed value is multipled by random sign. This will reduce the impact of collision. Disable it will enhance the speed. |

`verbose` |
logical value. Indicating if the progress bar is displayed or not. |

an object of class "dgCMatrix"

1 2 3 4 5 6 7 | ```
library(data.table)
library(FeatureHashing)
data(ipinyou)
m.train <- FTRLProx_Hashing(~ 0 + ., ipinyou.train[, -"IsClick", with = FALSE],
hash.size = 2^13, signed.hash = FALSE, verbose = TRUE)
m.test <- FTRLProx_Hashing(~ 0 + ., ipinyou.test[,-"IsClick", with = FALSE],
hash.size = 2^13, signed.hash = FALSE, verbose = TRUE)
``` |

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