Results 21 to 30 of about 15,987 (217)

A Variable Precision Covering-Based Rough Set Model Based on Functions

open access: yesThe Scientific World Journal, 2014
Classical rough set theory is a technique of granular computing for handling the uncertainty, vagueness, and granularity in information systems. Covering-based rough sets are proposed to generalize this theory for dealing with covering data.
Yanqing Zhu, William Zhu
doaj   +1 more source

Applications of Matrices to a Matroidal Structure of Rough Sets

open access: yesJournal of Applied Mathematics, 2013
Rough sets provide an efficient tool for dealing with the vagueness and granularity in information systems. They are widely used in attribute reduction in data mining. There are many optimization issues in attribute reduction.
Jingqian Wang, William Zhu
doaj   +1 more source

Fuzzy Granular Hyperplane Classifiers

open access: yesIEEE Access, 2020
Granular computing has advantage of knowledge discovery for complex data. In the paper, we present Fuzzy Granular Hyperplane Classifiers (FGHCs) for data classification from a new angle of Granular Computing.
Wei Li   +4 more
doaj   +1 more source

Equivalent Characterizations of Some Graph Problems by Covering-Based Rough Sets

open access: yesJournal of Applied Mathematics, 2013
Covering is a widely used form of data structures. Covering-based rough set theory provides a systematic approach to this data. In this paper, graphs are connected with covering-based rough sets.
Shiping Wang   +3 more
doaj   +1 more source

A Novel Neighborhood Granular Meanshift Clustering Algorithm

open access: yesMathematics, 2022
The most popular algorithms used in unsupervised learning are clustering algorithms. Clustering algorithms are used to group samples into a number of classes or clusters based on the distances of the given sample features.
Qiangqiang Chen   +5 more
doaj   +1 more source

About Granular Rough Computing—Overview of Decision System Approximation Techniques and Future Perspectives

open access: yesAlgorithms, 2020
Granular computing techniques are a huge discipline in which the basic component is to operate on groups of similar objects according to a fixed similarity measure. The first references to the granular computing can be seen in the works of Zadeh in fuzzy
Piotr Artiemjew
doaj   +1 more source

UNCERTAINTY MANAGEMENT IN SEISMIC VULNERABILITY ASSESSMENT USING GRANULAR COMPUTING BASED ON COVERING OF UNIVERSE [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
Earthquake is an abrupt displacement of the earth's crust caused by the discharge of strain collected along faults or by volcanic eruptions. Earthquake as a recurring natural cataclysm has always been a matter of concern in Tehran, capital of Iran, as a ...
F. Khamespanah, M. R. Delavar, M. Zare
doaj   +1 more source

Misperception of Body Weight After Childhood Cancer

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Misperception of body weight can negatively impact the weight management efforts of childhood cancer survivors (CCSs). Both being overweight or underweight are associated with chronic health conditions commonly observed in CCS; therefore, accurate weight perception is critical for reducing long‐term health risks.
Fabiën N. Belle   +8 more
wiley   +1 more source

Informational Granules in Interactive Granular Computing †

open access: yesComputer Sciences & Mathematics Forum, 2023
Informational granules are crucial objects in Interactive Granular Computing (IGrC). They are making it possible to link abstract objects and physical (not mathematical) objects in processes related to perceiving situations in the real world.
Andrzej Skowron
doaj   +1 more source

Therapeutic Apheresis in Nigeria: A Multi‐Center Summary of Abstracts From the Inaugural Nigerian Society for Apheresis Scientific Meeting

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Therapeutic apheresis (TA) is an established treatment modality for hematologic, neurologic, and immunologic disorders, yet access remains severely limited in sub‐Saharan Africa. Donor apheresis, including platelet apheresis collection from healthy donors, represents an important complementary modality supporting blood product ...
Nosa Bazuaye   +33 more
wiley   +1 more source

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