Vignan University

About: Vignan University is a education organization based out in Guntur, Andhra Pradesh, India. It is known for research contribution in the topics: Computer science & Control theory. The organization has 1138 authors who have published 1381 publications receiving 7798 citations.

A hybrid rule extraction method for One-Class Support Vector Machines

Abstract: One-Class Support Vector Machines (OCSVM) is widely applied for those classification problems where one of the classes of data is completely not present or not properly sampled However, the knowledge presented by OCSVM is not interpretable by the human analyst To ameliorate this problem there is a need for providing explanation aids to OCSVM classification decisions Recently, several rule extraction methods were evolved to provide explanation ability to Support Vector Machines (SVM) and Artificial Neural Networks (ANN) Motivated from these methods this paper proposes a new hybrid rule extraction method for OCSVM, which is not widely studied yet Proposed hybrid is composed with Support Vector Data Description (SVDD) and RIPPER rule learning The viability of the proposed hybrid is tested over three benchmark datasets Obtained results have shown that SVDD+RIPPER hybrid outperformed SVDD and RIPPER alone in terms of classification performance and explanation ability

Development and characterization of 1,1-bis(3-methyl-4-hydroxyphenyl) cyclohexane-based benzoxazine and cyanate ester hybrid polymer matrices: Thermal and morphological properties:

Abstract: 1,1-Bis(3-methyl-4-hydroxyphenyl)cyclohexane-based benzoxazine monomer and 1,1-bis(3-methyl-4-cyanatophenyl)cyclohexane were blended together via in situ polymerization. The chemical blending of be...

POSS nanoparticles: Synthesis, characterization, and properties

Abstract: Polyhedral oligomeric silsesquioxane (POSS) hybrid nanoparticles have been considered as one of the most favorable nano-reinforcements in the field of high-performance advanced hybrid composites used for high-tech applications. Therefore, researchers around the world have devoted more attention to study its well-defined multifunctional nanostructure, amenable functionalization, hybrid nature, and ease of processability. The introduction of POSS into polymer matrices enhances their thermal, mechanical, thermo-mechanical, dielectric, and morphological properties and also improves resistance to moisture, corrosion, oxidation, UV, and microbial organisms of resulting polymer nanocomposites. In this chapter, we describe the synthesis, characterization, and properties of various POSS nanoparticles including nonreactive, monofunctional, bifunctional, and multifunctional POSS derivatives.