`sparknlp_jsl.annotator.document_filterer_by_classifier`#

Module Contents#

Classes#

DocumentFiltererByClassifier

Filters documents by the result of classifier annotators.

class DocumentFiltererByClassifier(classname='com.johnsnowlabs.nlp.annotators.DocumentFiltererByClassifier', java_model=None)#

Bases: sparknlp_jsl.common.AnnotatorModelInternal, sparknlp_jsl.annotator.WhiteBlackListParams

Filters documents by the result of classifier annotators. Documents are filtered by the white list and black list. The white list is a list of classifier results that are allowed to pass the filter. The black list is a list of classifier results that are not allowed to pass the filter. The filter is case sensitive. If the caseSensitive is set to false, the filter is case in-sensitive.

Input Annotation Types

Output Annotation Type

DOCUMENT, CATEGORY

DOCUMENT

Input Annotation Types	Output Annotation Type
`DOCUMENT, CATEGORY`	`DOCUMENT`

Parameters:

blackList – If defined, list of entities to ignore. The rest will be processed.
whiteList – If defined, list of entities to process. The rest will be ignored.
caseSensitive – Determines whether the definitions of the white listed and black listed entities are case sensitive or not.

Examples

>>> from sparknlp.base import *
>>> from sparknlp.annotator import *
>>> from sparknlp_jsl.annotator import *
>>> from pyspark.ml import Pipeline
>>> documentAssembler = DocumentAssembler().setInputCol("text").setOutputCol("document")
>>> sentenceDetector = SentenceDetector().setInputCols("document").setOutputCol("sentence")
>>> tokenizer = Tokenizer().setInputCols("sentence").setOutputCol("token")
>>> medicalBFSC = MedicalBertForSequenceClassification.pretrained("bert_sequence_classifier_covid_sentiment", "en", "clinical/models") \
...     .setInputCols(["sentence", "token"]).setOutputCol("classifier") \
>>> documentFilterer = DocumentFiltererByClassifier() \
...     .setInputCols(["sentence", "classifier"])\
...     .setOutputCol("filteredDocuments")\
...     .setWhiteList(["Positive"])\
...     .setCaseSensitive(False)
>>> data = spark.createDataFrame([[
...     "British Department of Health confirms first two cases of in UK." +
...     "So my trip to visit my australian exchange student just got canceled because of Coronavirus." +
...     "I wish everyone to be safe at home and stop pandemic."
...     ]]).toDF("text")
>>> pipeline = Pipeline()\
...     .setStages([documentAssembler, sentenceDetector, tokenizer, medicalBFSC, documentFilterer]).fit(data)
>>> result = pipeline.transform(data)
>>> result.selectExpr("filteredDocuments").show(truncate=False)
+--------------------------------------------------------------------------------------------------+
|filteredDocuments                                                                                 |
+--------------------------------------------------------------------------------------------------+
|[{document, 181, 233, I wish everyone to be safe at home and stop pandemic., {sentence -> 2}, []}]|
+--------------------------------------------------------------------------------------------------+

blackList#

caseSensitive#

getter_attrs = []#

inputAnnotatorTypes#

inputCols#

lazyAnnotator#

name = DocumentFiltererByClassifier#

optionalInputAnnotatorTypes = []#

outputAnnotatorType#

outputCol#

skipLPInputColsValidation = True#

whiteList#

clear(param)#: Clears a param from the param map if it has been explicitly set.

copy(extra=None)#

Creates a copy of this instance with the same uid and some extra params. This implementation first calls Params.copy and then make a copy of the companion Java pipeline component with extra params. So both the Python wrapper and the Java pipeline component get copied.

Parameters:: extra (dict, optional) – Extra parameters to copy to the new instance
Returns:: Copy of this instance
Return type:: JavaParams

explainParam(param)#: Explains a single param and returns its name, doc, and optional default value and user-supplied value in a string.

explainParams()#: Returns the documentation of all params with their optionally default values and user-supplied values.

extractParamMap(extra=None)#

Extracts the embedded default param values and user-supplied values, and then merges them with extra values from input into a flat param map, where the latter value is used if there exist conflicts, i.e., with ordering: default param values < user-supplied values < extra.

Parameters:: extra (dict, optional) – extra param values
Returns:: merged param map
Return type:: dict

getInputCols()#: Gets current column names of input annotations.

getLazyAnnotator()#: Gets whether Annotator should be evaluated lazily in a RecursivePipeline.

getOrDefault(param)#: Gets the value of a param in the user-supplied param map or its default value. Raises an error if neither is set.

getOutputCol()#: Gets output column name of annotations.

getParam(paramName)#: Gets a param by its name.

getParamValue(paramName)#

Gets the value of a parameter.

Parameters:: paramName (str) – Name of the parameter

hasDefault(param)#: Checks whether a param has a default value.

hasParam(paramName)#: Tests whether this instance contains a param with a given (string) name.

inputColsValidation(value)#

isDefined(param)#: Checks whether a param is explicitly set by user or has a default value.

isSet(param)#: Checks whether a param is explicitly set by user.

classmethod load(path)#: Reads an ML instance from the input path, a shortcut of read().load(path).

classmethod read()#: Returns an MLReader instance for this class.

save(path)#: Save this ML instance to the given path, a shortcut of ‘write().save(path)’.

set(param, value)#: Sets a parameter in the embedded param map.

setBlackList(value)#

Sets If defined, list of entities to ignore. The rest will be processed. Do not include IOB prefix on labels

Parameters:: value (List[str]) – If defined, list of entities to ignore. The rest will be processed. Do not include IOB prefix on labels

setCaseSensitive(value)#

Determines whether the definitions of the white listed and black listed entities are case sensitive or not.

Parameters:: value (bool) – Whether white listed and black listed entities are case sensitive or not. Default: True.

setDenyList(value)#

Sets If defined, list of entities to ignore. The rest will be processed. Do not include IOB prefix on labels

Parameters:: value (List[str]) – If defined, list of entities to ignore. The rest will be processed. Do not include IOB prefix on labels

setForceInputTypeValidation(etfm)#

setInputCols(*value)#

Sets column names of input annotations.

Parameters:: *value (List[str]) – Input columns for the annotator

setLazyAnnotator(value)#

Sets whether Annotator should be evaluated lazily in a RecursivePipeline.

Parameters:: value (bool) – Whether Annotator should be evaluated lazily in a RecursivePipeline

setOutputCol(value)#

Sets output column name of annotations.

Parameters:: value (str) – Name of output column

setParamValue(paramName)#

Sets the value of a parameter.

Parameters:: paramName (str) – Name of the parameter

setParams()#

setWhiteList(value)#

Sets If defined, list of entities to process. The rest will be ignored. Do not include IOB prefix on labels

Parameters:: value (List[str]) – If defined, list of entities to process. The rest will be ignored. Do not include IOB prefix on labels

transform(dataset, params=None)#

Transforms the input dataset with optional parameters.

New in version 1.3.0.

Parameters:

dataset (pyspark.sql.DataFrame) – input dataset
params (dict, optional) – an optional param map that overrides embedded params.

Returns:

transformed dataset

Return type:

pyspark.sql.DataFrame

write()#: Returns an MLWriter instance for this ML instance.

sparknlp_jsl.annotator.document_filterer_by_classifier#

Module Contents#

Classes#

`sparknlp_jsl.annotator.document_filterer_by_classifier`#