Aurel Vlaicu University of Arad Editing House: Journals
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1955 research outputs found
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Wrapper Approach for Feature Selections in RBF Network Classifier
Full text linkIn this paper we investigate the impact of wrapper approach on classification accuracy and performance of RBF network.Wrapper approach used six rule induction algorithms for evaluators on supervised learning algorithms RBF network and testedusing eight real and three artificial benchmark data sets. Classification accuracy and performance of RBF network depends onevaluators. Our experimental results indicate that every rule induction algorithms in wrapper approach maintains or improves theaccuracy of RBF network for more than half data sets. Evaluation of selecting features with wrappers approach is not so fastcompare with filters approach
I-limit Points in Random 2-normed Spaces
Full text linkIn this article we introduce the notion I-cluster points, and investigate the relation between I-cluster points and limit pointsof sequences in the topology induced by random 2-normed spaces and prove some important results
On Multiset Topologies
Full text linkIn this paper an attempt is made to extend the concept of topological spaces in the context of multisets (mset, for short). Thepaper begins with basic definitions and operations on msets. The mset space [X]w is the collection of msets whose elements arefrom X such that no element in the mset occurs more than finite number (w) of times. Different types of collections of msets such aspower msets, power whole msets and power full msets which are submsets of the mset space and operations under such collectionsare defined. The notion of M-topological space and the concept of open msets are introduced. More precisely, an M-topologyis defined as a set of msets as points. Furthermore the notions of basis, sub basis, closed sets, closure and interior in topologicalspaces are extended to M-topological spaces and many related theorems have been proved. The paper concludes with the definitionof continuous mset functions and related properties, in particular the comparison of discrete topology and discrete M-topology areestablished
On Some Generalized I-Convergent Sequence Spaces Defined by a Modulus Function
Full text linkIn this article we introduce the sequence spaces cI0( f; p), cI ( f; p) and lI1 ( f; p) for a modulus function f , p = (pk)is a sequence of positive reals and study some of the properties of these spaces
A Simplified Architecture of Type-2 TSK Fuzzy Logic Controller for Fuzzy Model of Double Inverted Pendulums
Full text linkThis paper proposes a novel inference mechanism for an interval type-2 Takagi-Sugeno-Kang fuzzy logic controlsystem (IT2 TSK FLCS). This paper focuses on control applications for case both plant and controller use A2-C0 TSKmodels. The defuzzified output of the T2FLS is then obtained by averaging the defuzzified outputs of the resultantfour embedded T1FLSs in order to reduce the computational burden of T2 TSK FS. A simplified T2 TSK FS basedon a hybrid structure of four type-1 fuzzy systems (T1 TSK FS). A simulation example is presented to show theeectiveness of this method
Practical Algorithmic Optimizations for Finding Maximal Matchings in Induced Subgraphs of Grids and Minimum Cost Perfect Matchings in Bipartite Graphs
Full text linkIn this paper we present practical algorithmic optimizations addressing two problems. The first one is concernedwith computing a maximal matching in an induced subgraph of a grid graph. For this problem we present a fastersequential algorithm using bit operations and a way of implementing it in a parallel environment. The second problemis concerned with computing minimum cost perfect matchings in bipartite graphs. For this problem we extend theidea behind the Hopcroft-Karp maximum matching algorithm and then we consider a more general situation in whichmultiple minimum cost perfect matchings need to be computed in the same graph, under certain cost restrictions. Wepresent experimental results for all the proposed optimizations
Common Fixed Points of Hardy and Rogers Type Fuzzy Mappings on Closed Balls in a Complete Metric Space
Full text linkIn this paper we obtain some common fixed point theorems for Hardy and Rogers type fuzzy mappings on closedballs in a complete metric space. Our investigation is based on the fact that fuzzy fixed point results can be obtainedsimply from the fixed point theorem of multi-valued mappings with closed values.In real world problems there arevarious mathematical models in which the mappings are contractive on the subset of a space under consideration butnot on the whole space itself. Our results generalize several results of literature
On Some Generalized I-Convergent Sequence Spaces Defined by a Sequence of Moduli
Full text linkIn this article, we introduce the sequence spaces c0I(F, p), c1I(F, p), and l infinity I(F, p) for F being a sequence of moduli (f hat k) and p being a sequence of positive real numbers (p sub k). We study some of the properties and inclusion relations on these spaces
L p - Approximation of Analytic Functions on Compact Sets Bounded by Jordan Curves
Full text linkThis paper is concerned with functions analytic on compact sets bounded by Jordan curves having rapidly increasing maximum modulus such that order of function is infinite. To study the precise rates of growth of such functions the concept of index has been used. The q order and lower q order of analytic functions have been obtained in terms of L p approximation error. Our results improve and refine the results of Andre Giroux Giroux 1980 and Kapoor and Nautiyal Kapoor and Nautiyal 1982 for non entire case
Zweier I-Convergent Double Sequence Spaces Defined by a Sequence of Modulii
Full text linkIn the present article we have introduced the double sequence spaces ZZ^t(F), ZZ_0^t(F) and ZZ_infinity^t(F) for a sequence of moduli F = (f_ij). We have also studied their topological as well as algebraic properties