public class PolynomialExpansion extends Object implements Transformer<PolynomialExpansion>, PolynomialExpansionParams<PolynomialExpansion>
Take a 2-dimension vector as an example: `(x, y)`, if we want to expand it with degree 2, then we get `(x, x * x, y, x * y, y * y)`.
For more information about the polynomial expansion, see http://en.wikipedia.org/wiki/Polynomial_expansion.
DEGREE
INPUT_COL
OUTPUT_COL
Constructor and Description |
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PolynomialExpansion() |
Modifier and Type | Method and Description |
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Map<Param<?>,Object> |
getParamMap()
Returns a map which should contain value for every parameter that meets one of the following
conditions.
|
static PolynomialExpansion |
load(org.apache.flink.table.api.bridge.java.StreamTableEnvironment env,
String path) |
void |
save(String path)
Saves the metadata and bounded data of this stage to the given path.
|
org.apache.flink.table.api.Table[] |
transform(org.apache.flink.table.api.Table... inputs)
Applies the AlgoOperator on the given input tables and returns the result tables.
|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
get, getParam, set
getDegree, setDegree
getInputCol, setInputCol
getOutputCol, setOutputCol
public org.apache.flink.table.api.Table[] transform(org.apache.flink.table.api.Table... inputs)
AlgoOperator
transform
in interface AlgoOperator<PolynomialExpansion>
inputs
- a list of tablespublic void save(String path) throws IOException
Stage
save
in interface Stage<PolynomialExpansion>
IOException
public static PolynomialExpansion load(org.apache.flink.table.api.bridge.java.StreamTableEnvironment env, String path) throws IOException
IOException
public Map<Param<?>,Object> getParamMap()
WithParams
1) set(...) has been called to set value for this parameter.
2) The parameter is a public final field of this WithParams instance. This includes fields inherited from its interfaces and super-classes.
The subclass which implements this interface could meet this requirement by returning a
member field of the given map type, after having initialized this member field using the
ParamUtils.initializeMapWithDefaultValues(Map, WithParams)
method.
getParamMap
in interface WithParams<PolynomialExpansion>
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