computation with words

8/2/2019 Computation With Words

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COMPUTINGWITHWORDS

PRESENTATION BY

ANANYA BANERJEEAND

SHREYA MUKHERJEE


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WHAT IS COMPUTING AND CW?

Computing, in its usual sense, is centeredon manipulation of numbers and symbols

Computing with words is inspired by theremarkable human capability to perform awide variety of physical and mental taskswithout any measurements and any

computations.


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From manipulation ofmeasurements to manipulation of

perception Human brains crucialability to manipulate perceptions perceptions of size. Perception of distance. Perception of weight. Perception of speed, time, direction

etc


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REAL LIFE

APPLICATIONS OF CW Parking a car Driving in heavy traffic

Playing golf Riding a bicycle Understanding speech and

summarizing a story


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Difference betweenperceptions and

measurements Measurements are crisp

Perceptions are fuzzy


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Examples of linguistic characterization ofperceptions drawn from everyday

experiences are: Robert is highly intelligent Carol is very attractive

Hans is young Most Americans are tall


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GRANULATION

Granule:

a clump of physical or mental

objects(points) drawn together byindistinguishability, similarity,functionality.


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GRANULATION HIERARCHY

Granulation

Information

(IG)

Crisp

(CIG)

Fuzzy

(FIG)

Action

(AG)


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CIG

Crisp

Wide range of applications (e.g. Quantization,Semantic Analysis, Image Segmentation etc)

Drawback:Fails to reflect the fact that most humanperception are fuzzy rather than crisp.


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FIG

Fuzzy

The laying foundation of PERCEPTUAL

COMPUTING.

Human way of making rational decisions in anenvironment of imprecision , uncertainty & partialtruth.


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Crisp setA classical crisp set is defined as acollection of elements or objects x

that belongs to X which can befinite,countable or overcountable.


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FUZZY SET If X is a collection of objectsdenoted by x then a fuzzy set in Xis a set of ordered pairs

={(x, (x))| x belongs to X)} (x) is called the membership

function which gives the degree oftruth.


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What is CTP?

The computational theory of

perceptions, or CTP for short,is based on the methodology ofcomputing with words (CW).


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Principal rationales for the use of

CW:

The dont know rationale

The dont need rationale The cant solve rationale The cant define rationale.


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CONCLUSION In coming years, computing withwords and perceptions is likely to

emerge as an important direction inscience and technology.


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WEBOGRAPHY WWW.GOOGLE.COM

http://http.cs.berkeley.edu/People/Faculty/Homepages/zadeh.html
http://www.google.com/http://www.google.com/


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THANK YOU

computation with words

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