Introduction Flashcards
What is NLP?
The computational moddelling of human language.
Morphology
The structure of words e.g. unusually can be though of as prefix un-, stem usual and an affix - ly.
Syntax
The way words are used to form phrases.
Compositional Semantics
The construction of meaning based on syntax.
Lexical Semantics
The meanings of individual words.
Pragmatics
Meaning in context
Why is NLP difficult?
Ambiguity.
Why is Natural Language so ambiguous?
Flexibility, learnability, compactness, emergent, evolving. Humans can easily resolve potential ambiguity from context.
What is sentiment classification?
Find all references to an entity from some document set and classify them as positive, negative or neutral.
What is the bag of words technique?
Model the document as an unordered collection of words.
Deep NLP Application Architecture
Input Preprocessing, Morphological Analysis, Part of Speech Tagging, Preprocessing, Parsing, Disambiguation, Context Module, Text Planning, Tactical Generation, Morphological generation, output processing
Tactical Generation
Converts meaning represantation to strings.
