# Classifier **`class Classifier(config)`** Bases: [`BatchedStep`](../technical/libnlp/steps/standard.md#squirro.lib.nlp.steps.batched_step.BatchedStep) [`Classifier`](#squirro.lib.nlp.steps.classifiers.Classifier) steps attempt to guess a specified label_field given an input_field or input_fields. It writes its guess to a specified output_field along with a potential explanation in the explanation_field. Parameters - `step` ([`str`](https://docs.python.org/3.11/library/stdtypes.html#str)) – classifier - `type` ([`str`](https://docs.python.org/3.11/library/stdtypes.html#str)) – Type of [`Classifier`](#squirro.lib.nlp.steps.classifiers.Classifier) - `explanation_field` ([`str`](https://docs.python.org/3.11/library/stdtypes.html#str)`, ``None`) – Field with explanation of prediction - `input_field` ([`str`](https://docs.python.org/3.11/library/stdtypes.html#str)`, ``None`) – Field to use as input - `input_fields` ([`list`](https://docs.python.org/3.11/library/stdtypes.html#list)`, ``None`) – List of fields to form a feature vector - `label_field` ([`str`](https://docs.python.org/3.11/library/stdtypes.html#str)) – Field with ground-truth label (used for training) - `output_field` ([`str`](https://docs.python.org/3.11/library/stdtypes.html#str)) – Field where prediction is written