Attribute Reduction Based on Property Pictorial Diagram

نویسندگان

  • Qing Wan
  • Ling Wei
چکیده

This paper mainly studies attribute reduction which keeps the lattice structure in formal contexts based on the property pictorial diagram. Firstly, the property pictorial diagram of a formal context is defined. Based on such diagram, an attribute reduction approach of concept lattice is achieved. Then, through the relation between an original formal context and its complementary context, an attribute reduct of complementary context concept lattice is obtained, which is also based on the property pictorial diagram of the original formal context. Finally, attribute reducts in property oriented concept lattice and object oriented concept lattice can be acquired by the relations of attribute reduction between these two lattices and concept lattice of complementary context. In addition, a detailed illustrative example is presented.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Symbolic Representation for Rough Set Attribute Reduction Using Ordered Binary Decision Diagrams

The theory of rough set is the current research focus for knowledge discovery, attribute reduction is one of crucial problem in rough set theory. Most existing attribute reduction algorithms are based on algebra and information representations, discernibility matrix is a common knowledge representation for attribute reduction. As problem solving under different knowledge representations corresp...

متن کامل

Time and Space Complexity Reduction of a Cryptanalysis Algorithm

Binary Decision Diagram (in short BDD) is an efficient data structure which has been used widely in computer science and engineering. BDD-based attack in key stream cryptanalysis is one of the best forms of attack in its category. In this paper, we propose a new key stream attack which is based on ZDD(Zero-suppressed BDD). We show how a ZDD-based key stream attack is more efficient in time and ...

متن کامل

Time and Space Complexity Reduction of a Cryptanalysis Algorithm

Binary Decision Diagram (in short BDD) is an efficient data structure which has been used widely in computer science and engineering. BDD-based attack in key stream cryptanalysis is one of the best forms of attack in its category. In this paper, we propose a new key stream attack which is based on ZDD(Zero-suppressed BDD). We show how a ZDD-based key stream attack is more efficient in time and ...

متن کامل

Diagramming the Maya "Classic Motif": The Nonpropositional Pictorial Reasoning of Eternal Victory at Tikal

The nonpropositional pictorial reasoning of eternal victory is exemplified by the nonnarrative, figural concentricity of a clothed, standing ruler and an unclothed, aerially-suspended captive, on two Classic Maya reliefs at Tikal. This concentricity performs a fractal iteration–or, mise-en-abyme–of corporate dynastic eternality–a Maya-specific, transformational ’fold-ing’ of mortal, historical ...

متن کامل

On the Production of Anorexic Plan Diagrams

A “plan diagram” is a pictorial enumeration of the execution plan choices of a database query optimizer over the relational selectivity space. We have shown recently that, for industrial-strength database engines, these diagrams are often remarkably complex and dense, with a large number of plans covering the space. However, they can often be reduced to much simpler pictures, featuring signific...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره 2014  شماره 

صفحات  -

تاریخ انتشار 2014