H2O.Interactor: H2O.Interactor

In frbl/OnlineSuperLearner: Online SuperLearner package

Description

Class used to interact with H2O, mainly for caching data. It keeps track off all the data that has been uploaded to H2O, and returns the cached version if it is already on H2O.

Usage

H2O.Interactor

Format

An object of class R6ClassGenerator of length 24.

Methods

initialized(verbose = FALSE, digest_algorithm = 'sha1')

Initializes a new h2o interactor. The provided digest algorithm is used to calculate unique hashes of data when storing it (and to looking it back up in the cache).

@param verbose the verbosity to use @param digest_algorithm (default = 'sha1') string, the algorithm to use for the hashing @return a new intereactor

generate_hash(data)

Generates a checksum for a piece of data (e.g., datatable). This is used as a pointer to store the data under.

@param data the data table to hash @return string the hash of the datatable

get_data_pointer(data)

Function that either uploads or reuses a dataset to H2O and returns the pointer to the data on H2O. It will always return a pointer to data on H2O.

@param data the data to send to H2O. @return string the identifier on H2O.

add_and_return_data_hash(data)

Function that adds data to a specific hash location in the h2o cache.

@param hash string hash to use for caching the data. @param data the data to send to H2O. @return string the identifier on H2O.

get_h2o_objects()

Active method. Function that returns the raw h2o objects.

@param hash string hash to use for caching the data. @param data the data to send to H2O. @return string the identifier on H2O.

frbl/OnlineSuperLearner documentation built on Feb. 9, 2020, 9:28 p.m.