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In this step, the DBSCAN algorithm has the following parameters:

.. include:: distributed-steps/includes/parameters_blocks.rst

In this step, the DBSCAN algorithm accepts the input described below.
Pass the ``Input ID`` as a parameter to the methods that provide input for your algorithm.
For more details, :ref:`algorithms`.

.. tabularcolumns::  |\Y{0.2}|\Y{0.8}|

.. list-table:: Algorithm Input for DBSCAN (Distributed Processing, Step 8)
   :widths: 10 60
   :header-rows: 1
   :class: longtable

   * - Input ID
     - Input
   * - ``step8InputClusterStructure``
     - Pointer to the numeric table with :math:`4` columns and arbitrary number of rows containing information about
       current clustering state of observations processed on the local node.

       .. include:: ./../../includes/input_numeric_table.rst

   * - ``step8InputNClusters``
     - Pointer to :math:`1 \times 1` numeric tables containing the current number of clusters found on the local node.

       .. include:: ./../../includes/input_numeric_table.rst

   * - ``step8PartialQueries``
     - Pointer to the collection of numeric tables with :math:`3` columns and arbitrary number of rows containing
       clustering queries that should be processed on the local node collected from all nodes.

       .. include:: ./../../includes/input_data_collection_with_exceptions.rst

Algorithm Output
++++++++++++++++

In this step, the DBSCAN algorithms calculates the partial results described below.
Pass the ``Partial Result ID`` as a parameter to the methods that access the partial result of your algorithm.
For more details, :ref:`algorithms`.

.. tabularcolumns::  |\Y{0.2}|\Y{0.8}|

.. list-table:: Partial Results for DBSCAN (Distributed Processing, Step 8)
   :widths: 10 60
   :header-rows: 1
   :class: longtable

   * - Partial Result ID
     - Result
   * - ``step8ClusterStructure``
     - Pointer to the numeric table with :math:`4` columns and arbitrary number of rows
       containing information about current clustering state of observations processed on the local node.

       .. include:: ./../../includes/default_result_numeric_table.rst

   * - ``step8FinishedFlag``
     - Pointer to :math:`1 \times 1` numeric table containing the flag indicating that the clustering process is finished for current node.

       .. include:: ./../../includes/default_result_numeric_table.rst

   * - ``step8NClusters``
     - Pointer to :math:`1 \times 1` numeric table containing the current number of clusters found on the local node.

       .. include:: ./../../includes/default_result_numeric_table.rst

   * - ``step8Queries``
     - Pointer to the collection of ``nBlocks`` numeric tables with :math:`3` columns and arbitrary number of rows
       containing clustering queries that should be processed on each node. Numeric tables in collection
       ordered by the identifiers of initial block of nodes.

       .. include:: ./../../includes/default_result_data_collection.rst
