.. _`Symbolic Aggregation Approximation (SAX)`:

.. _`com.sympathyfordata.timeseriesanalysis.sax`:

Symbolic Aggregation Approximation (SAX)
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.. image:: sax.svg
   :width: 48


Uses Symbolic Aggregation Approximation to reduce the output space into a (small) set of symbols. The input values are replaced by the value of the bin that they match. Each bin's value corresponds to one letter or digit. This generates a string from the input values. The final output is generated by sliding a window over this string.





Definition
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Input ports
...........

    **input**
        | Type: table
        | Description: input
    **bin_values**
        | Type: table
        | Description: bin_values
        | Optional number of ports: 0--1 (default: 0)
        

Output ports
............

    **output**
        | Type: table
        | Description: output
    **bin_values**
        | Type: table
        | Description: bin_values
        | Optional number of ports: 0--1 (default: 0)
        



Configuration
.............

    **Bins** (bins)
        Number of output bins
    **Sliding window** (window)
        Generates words using a sliding window over the generated symbols. If zero then a single string is given













Implementation
..............

.. automodule:: node_paa_sax
    :noindex:

.. class:: SymbolicAggregationApproximation
    :noindex: