Browsing by Author "Ahmad Shukri Mohd Noor"

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    Cluster Validation Analysis on Attribute Relative of Soft Set Theory
    (Springer Link, 2016) Rabiei Mamat; Ahmad Shukri Mohd Noor; Tutut Herawan
    Data clustering on categorical data pose a difficult challenge since there are no-inherent distance measures between data values. One of the approaches that can be used is by introducing a series of clustering attributes in the categorical data. By this approach, Maximum Total Attribute Relative (MTAR) technique that is based on the attribute relative of soft-set theory has been proposed and proved has better execution time as compared to other equivalent techniques that used the same approach. In this paper, the cluster validity analysis on the technique is explained and discussed. In this analysis, the validity of the clusters produced by MTAR technique is evaluated by the entropy measure using two standards dataset: Soybean (Small) and Zoo from University California at Irvine (UCI) repository. Results show that the clusters produce by MTAR technique have better entropy and improved the clusters validity up to 33%.
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    Neighbour replica affirmative adaptive failure detection and autonomous recovery
    (Johor: Universiti Tun Hussein Onn, 2013-01-31) Ahmad Shukri Mohd Noor
    High availability is an important property for current distributed systems. The trends of current distributed systems such as grid computing and cloud computing are the delivery of computing as a service rather than a product. Thus, current distributed systems rely more on the highly available systems. The potential to fail-stop failure in distributed computing systems is a significant disruptive factor for high availability distributed system.
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    Review of Replication Techniques for Distributed Systems
    (LNCS, 2015) Ahmad Shukri Mohd Noor; Nur Farhah Mat Zian; Mustafa Mat Deris; Tutut Herawan
    Distributed systems primarily provide the access to data intensive computation through a wide range of interfaces. Due to the advances of the systems, the scales and complexity of the system have increased, causing faults are likely bound to happen leading into diverse faults and failure conditions. Therefore, fault tolerance has become a crucial property for distributed system in order to preserve its function correctly and available in the presence of faults. Replication techniques particularly concentrates on two fault tolerance manners; masking the failures on the fly as well as reconfiguring the systems in response. This paper presents a brief reviews on different replication techniques, such as Grid Configuration (GC), Box-Shaped Grid (BSG) and Neighbor Replication on Grid (NRG) by comparing and formalizing its communication costs and availabilities analysis based on k-out-of-n model. Each of these techniques presents their own merits and demerits which form the subject matter of this review.