| ClassifierBasedTransformation | Classify whatever is passed in the transform and pass it a different set of transformations based on the class. |
| EnglishVowels | Helper Vowel class, determines if the character at a given index is a vowel |
| StopWords | Stop Words are words which are filtered out because they carry little to no information. |
| VowelsAbstractFactory | Factory wrapper for Vowels |
Interfaces
| TransformationInterface | TransformationInterface represents any type of transformation to be applied upon documents. |