anshu kumar
Description Theory, in a general sense, refers to theories that focus on representing and understanding shapes and objects through descriptive features, rather than just relying on visual appearance. Specifically, in philosophy of language, it refers to Bertrand Russell's theory of descriptions, which analyzes how definite and indefinite descriptions function in language and their relationship to meaning and reference.
Descriptive Theory in Object Recognition:
Structural Features:
Description Theory, in computer vision, focuses on representing objects and shapes using structural features that are invariant to viewpoint changes, according to ScienceDirect.com.
Allocentric Reference Frame:
These theories often encode structural information in a spatial reference frame that is independent of the viewer's perspective, ScienceDirect.com.
Generalization:
They aim to represent novel and complex shapes, allowing for generalization from a single example and the categorization of objects.
Contrast with View-Based Theories:
Description Theory contrasts with view-based theories, which rely on a fixed set of views or images to recognize objects, ScienceDirect.com.
Russell's Theory of Descriptions in Philosophy of Language:
Definite vs. Indefinite Descriptions:
Russell's theory of descriptions, also known as Russell's Theory of Denoting, analyzes how phrases like "the present king of France" or "a flytrap" function in language.
Meaning and Reference:
It examines the relationship between the syntactic form of descriptions and their logical or semantic content, addressing how they refer to objects and what they assert about them.
Existential and Uniqueness Claims:
Russell argued that definite descriptions (like "the F") imply both existence and uniqueness, while indefinite descriptions (like "a F") only imply existence, according to PhilPapers.
Influence and Criticism:
Russell's theory has been highly influential in philosophy of language, but it has also faced criticism from philosophers like P.F. Strawson and Keith Donnellan, Wikipedia.
Theory of descriptions - Wikipedia
The theory of descriptions is the philosopher Bertrand Russell's most significant contribution to the philosophy of language. It i...
Wikipedia
Description Theory - an overview | ScienceDirect Topics
Description Theory refers to a class of theories that explicitly encodes structural information about features in an allocentric r...
ScienceDirect.com
Russell's Theory of Descriptions - Bibliography - PhilPapers
According to Russell's theory of descriptions, indefinite descriptions (e.g. "an F") contribute only a bare existence c