|
|
This is only a preview of the paper
Click here to register and get the full text.
Existing members click here to login
|
|
|
INTRODUCTION
A concept is "mentally represented as combination of necessary and sufficient properties which define the categories so represented. ... 24) Thus, a tree is a concept. ... The defining features approach assumes that the features in mental representation apply equally to all members of that category, that all concepts are represented in this manner by all people, and that representations can be arranged into a conceptual hierarchy (Roth & Bruce, 1995). ...
FUZZY CONCEPT
Categorises has it difficulties implies that there will be a difference between category members in the number of characteristic properties each member has. It also implies that category boundaries will be fuzzy, so it will not be clear whether some instances are category members or not. And category learning is not a simple matter of figuring out the defining features of a concept or category, because there may not be any such features. ... All this views led to the shortfall of the defining feature approach and opting for the alternative "fuzzy" concept approach.
The "fuzzy" concepts approach involves a prototype structure and there is no delimiting set of necessary and sufficient conditions for determining category membership that can also be fuzzy. ... Labov (1973) showed that our boundaries of concepts are extremely "fuzzy" and are highly context dependant. ... However, the approach does not tackle the question of what forms a prototype. ... Both models explain the main effects associated with how fuzzy boundaries work. ... So everything is not only fuzzy but has dual representation as well. Therefore we have to consider the purposes of the representation and knowledge held by individual in representation of concept.
CONCLUSION
The "fuzzy" concept was developed as an alternative to the defining feature approach, according to which categorisation was accomplished on the basis of a set of features that were necessary and sufficient for category membership.
Approximate Word count = 1460
Approximate Pages = 5.8
(250 words per page double spaced)
|
|
|
|
|
|