3. “The man who knows no foreign language knows
nothing of his mother tongue”
-Johan Wolfang Von Geothe(1749-1932)
German Poet, Playwright and Philosopher
5. language spoken by people, e.g.
English, Nepali, Spanish, as
opposed to artificial languages,
like C++, Java, etc.
6. Background
-Understanding????
Process of mapping from input form
into a more useful form….
A pair(source language, target
representation) together with a
mapping between elements of each
other
-Language????
7. Natural Language Processing
1.What does the written/spoken sentence
mean?(Natural Language Understanding)
2.What is to be represented and how to express
it in natural language(Natural Language
Generation)
8. Natural Language Understanding
Raw Speech Signal
Sequence of Word Spoken
Structure of Sentence
Partial Representation of meaning of sentence
Final Representation of meaning of sentence
Speech Recognition(phonetic)
Syntactic Analysis
Semantic Analysis
Pragmatic Analysis
10. Constructing words from Phonemes through
frequency spectrogram
Eg. th+i+ng=thing
Phoneme Database is used
Phonetic Analysis
11. Syntactic Analysis
i. Exploits result of Phonetic Analysis
ii. Builds Structural description of Sentence.
iii. Flat input sequence is converted into hierarchical
structure(parsing).
16. The sea is at the home for billions
factories and animals
The sea is home to million of plants
and animals
Semantic Analysis
17. Pragmatic Analysis
Uses context of utterance
Where, by who, to whom, why, when it was said
Intentions: inform, request, promise, criticize, …
Handling Pronouns
“Kusum eats apples. She likes them.”
She=“Kusum”, them=“apples”.
