Presentation on Natural Language Processing

Presented by: Bina Gupta BIM 5th semester

Hetauda School of Management

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Outline

IntroductionApplicationsNatural Language UnderstandingFuture of NLP

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QUESTION???

Have you ever used the NLP products or NLP powered tools?

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So what is NLP?A sub-field of AI.An inter-disciplinary subject.

Objective:To build a computer that can

interact with human being as that of human being.

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Natural Language???

Refers to a language spoken by the people like nepali, english, chinese, etc.. And not the artificial language like C++, java, etc

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Applications of NLP techniques Automatic summarization

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Applications of NLP techniques Information Extraction

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Applications of NLP techniques Grammar Testing

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Applications of NLP techniques question answering

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Applications of NLP techniques machine translation

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Natural Language UnderstandingUnderstanding of natural

language by machine .-morphological analysis(speech

recognition)-Syntactic analysis-Semantic analysis-Pragmatic analysis-Discourse analysis

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S T A G E S

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Natural Language UnderstandingMorphological analysis :

Input Analog Signal Freq. spectrogram(microphone records voice) (e.g. Fourier transform)

time

Hz

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Natural Language UnderstandingSyntactic analysis

-determine grammar and parsing in sentence structure

Grammar

I am a boy = [Subject] [Verb] [Cardinal] [Noun]

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Parsing

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Natural Language UnderstandingSemantic analysis

- meaning of the sentence from the meaning of its parts:

◦Sentence: A tall man likes Mary◦Representation: x man(x) & tall(x) &

likes(x,mary)

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Natural Language UnderstandingPragmatic analysis

- concerns how sentences are used in different situations and how use affects the interpretation of the sentence

Discourse analysis - concerns how the immediately

preceding sentences affect the interpretation of the next sentence

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‘He’, ‘it’, ‘his’ can be inferred from previous sentence

It’s discourse

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Future of NLPSemantic web/ search

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Future of NLPSentiment analysis/Opinion

mining

Feeling sad Feeling happy

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Future of NLPMachine Translation

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Referenceswww.Authorstream.comwww.Slideshare.com

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Questions ?

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Thank you