class_docstr: Extends scikit-learn's LinearSVC class to provide confidence estimates.
      
class_docstr_tok: ["Extends","scikit-learn","'s","LinearSVC","class","to","provide","confidence","estimates","."]
code: def _sigmoid(self, x):
      return 1 / (1 + np.exp(-x))
  
imports: from abc import ABC, abstractmethod
  import numpy
  from sklearn.multiclass import OneVsRestClassifier
  from sklearn.preprocessing import normalize
  from sklearn.svm import LinearSVC
  from sklearn.utils.multiclass import is_multilabel
  from small_text.utils.classification import empty_result, prediction_result
  from small_text.utils.data import check_training_data
label_desc: Use image node_id 4 for calling the ConfidenceEnhancedLinearSVC obj's underlying member method code with example usage: obj._sigmoid(x) and returns: unknown