Function Name | Description | Parameters | Examples |
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Count | Outputs the number of steam elements. | Name | Description | Default Value | Optional? |
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OUTPUT_ATTRIBUTES
| The name for the output attribute. | count | True |
| ['FUNCTION' = 'Count']
['FUNCTION' = 'Count', 'OUTPUT_ATTRIBUTES' = 'number_of_elements'] |
Sum | Outputs the sum of elements. | Name | Description | Default Value | Optional? |
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INPUT_ATTRIBUTES | The single string or a list of the name(s) of the attribute(s) in the input tuples. By default, all input attributes are used. This could raise an error if attributes are not numeric. | (all attributes) | True | OUTPUT_ATTRIBUTES | A single string or list of output attributes. By default, the string "Sum_" concatenated with the original input attribute name is used. | "Sum_" + intput attribute name | True |
| ['FUNCTION' = 'Sum'] ['FUNCTION' = 'Sum', 'INPUT_ATTRIBUTES' = 'value1'] ['FUNCTION' = 'Sum', 'INPUT_ATTRIBUTES' = ['value1', 'value2']] |
Avg | Average value (mean) | TODO (similar to Sum) |
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Min | Min value | TODO (similar to Sum) |
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Max | Max value | TODO (similar to Sum) |
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First | The first element of a window | Name | Description | Default Value | Optional? |
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OUTPUT_ATTRIBUTES
| The name for the output attribute. | first | True |
|
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Last | The last element of a window | Name | Description | Default Value | Optional? |
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OUTPUT_ATTRIBUTES
| The name for the output attribute. | last | True |
|
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Trigger | The tuple that triggers the output. | TODO |
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Variance | Calculates the variance | TODO (similar to Sum) |
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TopK | Calculates the top-K list | TODO |
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Nest | Nests the valid elements as list. | TODO |
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