Setting Up the H2O Cluster

Set up the H2O environment and build a regression model with H2O AutoML.

Initializing the H2O environment

H2O is a popular open-source platform for machine learning and data analysis. To get started with H2O, we need to initialize the H2O cluster with the h2o.init() function.

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import h2o
h2o.init(ip="127.0.0.1", port=8080)

The h2o.init() function uses several parameters to control the behavior of the H2O cluster. Some of the most common parameters are:

  • ip: A string that specifies the IP address of the machine running the H2O cluster. By default, this value is set to localhost, meaning the H2O cluster will run on the local machine.

  • port: An integer that specifies the port number to use for the H2O cluster. By default, this value is set to 54321.

  • startup_nanotime: A long integer that specifies the number of nanoseconds to wait for the H2O cluster to start up. By default, this value is set to 0, meaning the H2O cluster will wait indefinitely till it starts.

  • max_mem_size: A string that specifies the maximum amount of memory in gigabytes (GB) that the H2O cluster can use. For example, 2g sets the maximum memory size to 2 GB. By default, this value is NULL, implying that the H2O cluster will use all available memory.

  • nthreads: An integer that specifies the number of threads to use for parallel processing in the H2O cluster. By default, this value is equal to the number of cores in the machine.

Read dataset with H2O frame

When we work with big data, we often use the pandas read_csv() method, which copies the data from a file and ...