581,199 research outputs found
A capacity sharing and stealing strategy for open real-time systems
This paper focuses on the scheduling of tasks with hard and soft real-time constraints
in open and dynamic real-time systems. It starts by presenting a capacity
sharing and stealing (CSS) strategy that supports the coexistence of guaranteed
and non-guaranteed bandwidth servers to efficiently handle soft-tasks’ overloads by
making additional capacity available from two sources: (i) reclaiming unused reserved
capacity when jobs complete in less than their budgeted execution time and
(ii) stealing reserved capacity from inactive non-isolated servers used to schedule
best-effort jobs.
CSS is then combined with the concept of bandwidth inheritance to efficiently
exchange reserved bandwidth among sets of inter-dependent tasks which share resources
and exhibit precedence constraints, assuming no previous information on
critical sections and computation times is available. The proposed Capacity Exchange
Protocol (CXP) has a better performance and a lower overhead when compared
against other available solutions and introduces a novel approach to integrate
precedence constraints among tasks of open real-time systems
Cybernetics, Fuzziness and Scientific Revolutions
Settimo Termini ​pioneered along with Aldo de Luca the concept of fuzziness measures
in the sixties. Today he is a Full Professor of Theoretical Computer Science at the
University of Palermo and an affiliated researcher at the European Center for Soft
Computing, Mieres (Asturias), Spain. He has directed from 2002 to 2009 the Istituto di
Cibernetica "Eduardo Caianiello" of CNR (National Research Council) in Italy. Among his
scientific interests, the introduction and formal development of the theory of (entropy)
measures of fuzziness; an analysis in innovative terms of the notion of vague predicate
as it appears and is used in Information Sciences, Cybernetics and AI. Recently he has
been interested also in the connections between scientific research and economic
development and the conceptual foundations of Fuzzy Sets and Soft Computing. He is
Fellow of the International Fuzzy Systems Association and of the Accademia Nazionale
di Scienze, Lettere ed Arti of Palermo. In 2015 he will be 70, and we want to celebrate
his birthday with the Soft Computing community with this interview where he discusses
history of Cybernetics. The interview was conducted in Italian and translated by the
authors
New Trends in Neutrosophic Theory and Applications Volume II
Neutrosophic set has been derived from a new branch of philosophy, namely Neutrosophy. Neutrosophic set is capable of dealing with uncertainty, indeterminacy and inconsistent information. Neutrosophic set approaches are suitable to modeling problems with uncertainty, indeterminacy and inconsistent information in which human knowledge is necessary, and human evaluation is needed. Neutrosophic set theory was proposed in 1998 by Florentin Smarandache, who also developed the concept of single valued neutrosophic set, oriented towards real world scientific and engineering applications. Since then, the single valued neutrosophic set theory has been extensively studied in books and monographs introducing neutrosophic sets and its applications, by many authors around the world. Also, an international journal - Neutrosophic Sets and Systems started its journey in 2013. Single valued neutrosophic sets have found their way into several hybrid systems, such as neutrosophic soft set, rough neutrosophic set, neutrosophic bipolar set, neutrosophic expert set, rough bipolar neutrosophic set, neutrosophic hesitant fuzzy set, etc. Successful applications of single valued neutrosophic sets have been developed in multiple criteria and multiple attribute decision making. This second volume collects original research and application papers from different perspectives covering different areas of neutrosophic studies, such as decision making, graph theory, image processing, probability theory, topology, and some theoretical papers. This volume contains four sections: DECISION MAKING, NEUTROSOPHIC GRAPH THEORY, IMAGE PROCESSING, ALGEBRA AND OTHER PAPERS. First paper (Pu Ji, Peng-fei Cheng, Hongyu Zhang, Jianqiang Wang. Interval valued neutrosophic Bonferroni mean operators and the application in the selection of renewable energy) aims to construct selection approaches for renewable energy considering the interrelationships among criteria. To do that, Bonferroni mean (BM) and geometric BM (GBM) are employed
Using machine learning techniques to evaluate multicore soft error reliability
Virtual platform frameworks have been extended
to allow earlier soft error analysis of more realistic multicore
systems (i.e., real software stacks, state-of-the-art ISAs). The
high observability and simulation performance of underlying
frameworks enable to generate and collect more error/failurerelated data, considering complex software stack configurations,
in a reasonable time. When dealing with sizeable failure-related
data sets obtained from multiple fault campaigns, it is essential to
filter out parameters (i.e., features) without a direct relationship
with the system soft error analysis. In this regard, this paper proposes the use of supervised and unsupervised machine learning
techniques, aiming to eliminate non-relevant information as well
as identify the correlation between fault injection results and
application and platform characteristics. This novel approach
provides engineers with appropriate means that able are able to
investigate new and more efficient fault mitigation techniques.
The underlying approach is validated with an extensive data set
gathered from more than 1.2 million fault injections, comprising
several benchmarks, a Linux OS and parallelization libraries
(e.g., MPI, OpenMP), as well as through a realistic automotive
case study
Soft set theory and topology
[EN] In this paper we study and discuss the soft set theory giving new definitions, examples, new classes of soft sets, and properties for mappings between different classes of soft sets. Furthermore, we investigate the theory of soft topological spaces and we present new definitions, characterizations, and properties concerning the soft closure, the soft interior, the soft boundary, the soft continuity, the soft open and closed maps, and the soft homeomorphism.Georgiou, DN.; Megaritis, AC. (2014). Soft set theory and topology. Applied General Topology. 15(1):93-109. doi:http://dx.doi.org/10.4995/agt.2014.2268.93109151Aktaş, H., & Çağman, N. (2007). Soft sets and soft groups. Information Sciences, 177(13), 2726-2735. doi:10.1016/j.ins.2006.12.008Ali, M. I., Feng, F., Liu, X., Min, W. K., & Shabir, M. (2009). On some new operations in soft set theory. Computers & Mathematics with Applications, 57(9), 1547-1553. doi:10.1016/j.camwa.2008.11.009Aygünoğlu, A., & Aygün, H. (2011). Some notes on soft topological spaces. Neural Computing and Applications, 21(S1), 113-119. doi:10.1007/s00521-011-0722-3Çağman, N., & Enginoğlu, S. (2010). Soft set theory and uni–int decision making. European Journal of Operational Research, 207(2), 848-855. doi:10.1016/j.ejor.2010.05.004Çağman, N., & Enginoğlu, S. (2010). Soft matrix theory and its decision making. Computers & Mathematics with Applications, 59(10), 3308-3314. doi:10.1016/j.camwa.2010.03.015Çağman, N., Karataş, S., & Enginoglu, S. (2011). Soft topology. Computers & Mathematics with Applications, 62(1), 351-358. doi:10.1016/j.camwa.2011.05.016Chen, D., Tsang, E. C. C., Yeung, D. S., & Wang, X. (2005). The parameterization reduction of soft sets and its applications. Computers & Mathematics with Applications, 49(5-6), 757-763. doi:10.1016/j.camwa.2004.10.036Feng, F., Jun, Y. B., & Zhao, X. (2008). Soft semirings. Computers & Mathematics with Applications, 56(10), 2621-2628. doi:10.1016/j.camwa.2008.05.011Hussain, S., & Ahmad, B. (2011). Some properties of soft topological spaces. Computers & Mathematics with Applications, 62(11), 4058-4067. doi:10.1016/j.camwa.2011.09.051O. Kazanci, S. Yilmaz and S. Yamak, Soft Sets and Soft BCH-Algebras, Hacettepe Journal of Mathematics and Statistics 39, no. 2 (2010), 205-217.KHARAL, A., & AHMAD, B. (2011). MAPPINGS ON SOFT CLASSES. New Mathematics and Natural Computation, 07(03), 471-481. doi:10.1142/s1793005711002025Maji, P. K., Roy, A. R., & Biswas, R. (2002). An application of soft sets in a decision making problem. Computers & Mathematics with Applications, 44(8-9), 1077-1083. doi:10.1016/s0898-1221(02)00216-xMaji, P. K., Biswas, R., & Roy, A. R. (2003). Soft set theory. Computers & Mathematics with Applications, 45(4-5), 555-562. doi:10.1016/s0898-1221(03)00016-6P. K. Maji, R. Biswas and A. R. Roy, Fuzzy soft sets, J. Fuzzy Math. 9, no. 3 (2001), 589-602.MAJUMDAR, P., & SAMANTA, S. K. (2008). SIMILARITY MEASURE OF SOFT SETS. New Mathematics and Natural Computation, 04(01), 1-12. doi:10.1142/s1793005708000908Min, W. K. (2011). A note on soft topological spaces. Computers & Mathematics with Applications, 62(9), 3524-3528. doi:10.1016/j.camwa.2011.08.068Molodtsov, D. (1999). Soft set theory—First results. Computers & Mathematics with Applications, 37(4-5), 19-31. doi:10.1016/s0898-1221(99)00056-5D. A. Molodtsov, The description of a dependence with the help of soft sets, J. Comput. Sys. Sc. Int. 40, no. 6 (2001), 977-984.D. A. Molodtsov, The theory of soft sets (in Russian), URSS Publishers, Moscow, 2004.D. A. Molodtsov, V. Y. Leonov and D. V. Kovkov, Soft sets technique and its application, Nechetkie Sistemy i Myagkie Vychisleniya 1, no. 1 (2006), 8-39.D. Pei and D. Miao, From soft sets to information systems, In: X. Hu, Q. Liu, A. Skowron, T. Y. Lin, R. R. Yager, B. Zhang, eds., Proceedings of Granular Computing, IEEE, 2 (2005), 617-621.Shabir, M., & Naz, M. (2011). On soft topological spaces. Computers & Mathematics with Applications, 61(7), 1786-1799. doi:10.1016/j.camwa.2011.02.006Shao, Y., & Qin, K. (2011). The lattice structure of the soft groups. Procedia Engineering, 15, 3621-3625. doi:10.1016/j.proeng.2011.08.678I. Zorlutuna, M. Akdag, W. K. Min and S. Atmaca, Remarks on soft topological spaces, Annals of Fuzzy Mathematics and Informatics 3, no. 2 (2012), 171-185.Zou, Y., & Xiao, Z. (2008). Data analysis approaches of soft sets under incomplete information. Knowledge-Based Systems, 21(8), 941-945. doi:10.1016/j.knosys.2008.04.00
Development of Biomarkers Based on Diet-Dependent Metabolic Serotypes: Practical Issues in Development of Expert System-Based Classification Models in Metabolomic Studies
This is the publisher's official version, also available electronically from: http://online.liebertpub.com/doi/pdfplus/10.1089/omi.2004.8.197Dietary restriction (DR)-induced changes in the serum metabolome may be biomarkers for
physiological status (e.g., relative risk of developing age-related diseases such as cancer).
Megavariate analysis (unsupervised hierarchical cluster analysis IHCAJ; principal components
analysis [PCAJ) of serum metabolites reproducibly distinguish DR from ad libitum fed
rats. Component-based approaches (i.e., PCA) consistently perform as well as or better than
distance-based metrics (i.e., HCA). We therefore tested the following: (A) Do identified subsets
of serum metabolites contain sufficient information to construct mathematical models
of class membership (i.e., expert systems)? (B) Do component-based metrics out-perform
distance-based metrics? Testing was conducted using KNN (k-nearest neighbors, supervised
HCA) and SIMCA (soft independent modeling of class analogy, supervised PCA). Models
were built with single cohorts, combined cohorts or mixed samples from previously studied
cohorts as training sets. Both algorithms over-fit models based on single cohort training sets.
KNN models had >85% accuracy within training/test sets, but were unstable (i.e., values of
k could not be accurately set in advance). SIMCA models had 100% accuracy within all
training sets, 89% accuracy in test sets, did not appear to over-fit mixed cohort training sets,
and did not require post-hoc modeling adjustments. These data indicate that (i) previously
defined metabolites are robust enough to construct classification models (expert systems)
with SIMCA that can predict unknowns by dietary category; (ii) component-based analyses
outperformed distance-based metrics; (iii) use of over-fitting controls is essential; and (iv)
subtle inter-cohort variability may be a critical issue for high data density biomarker studies
that lack state markers
On the fixed point theory of soft metric spaces
[EN] The aim of this paper is to show that a soft metric induces a compatible metric on the collection of all soft points of the absolute soft set, when the set of parameters is a finite set. We then show that soft metric extensions of several important fixed point theorems for metric spaces can be directly deduced from comparable existing results. We also present some examples to validate and illustrate our approach.Salvador Romaguera thanks the support of Ministry of Economy and Competitiveness of Spain, Grant MTM2012-37894-C02-01.Abbas, M.; Murtaza, G.; Romaguera Bonilla, S. (2016). On the fixed point theory of soft metric spaces. Fixed Point Theory and Applications. 2016(17):1-11. https://doi.org/10.1186/s13663-016-0502-yS111201617Zadeh, LA: Fuzzy sets. Inf. Control 8, 103-112 (1965)Molodtsov, D: Soft set theory - first results. Comput. Math. Appl. 37, 19-31 (1999)Aktaş, H, Çağman, N: Soft sets and soft groups. Inf. 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Appl. 58, 521-527 (2009)Zhu, P, Wen, Q: Operations on soft sets revisited (2012). arXiv:1205.2857v1Feng, F, Jun, YB, Liu, XY, Li, LF: An adjustable approach to fuzzy soft set based decision making. J. Comput. Appl. Math. 234, 10-20 (2009)Feng, F, Jun, YB, Zhao, X: Soft semirings. Comput. Math. Appl. 56, 2621-2628 (2008)Feng, F, Liu, X: Soft rough sets with applications to demand analysis. In: Int. Workshop Intell. Syst. Appl. (ISA 2009), pp. 1-4. (2009)Herawan, T, Deris, MM: On multi-soft sets construction in information systems. In: Emerging Intelligent Computing Technology and Applications with Aspects of Artificial Intelligence, pp. 101-110. Springer, Berlin (2009)Herawan, T, Rose, ANM, Deris, MM: Soft set theoretic approach for dimensionality reduction. In: Database Theory and Application, pp. 171-178. Springer, Berlin (2009)Kim, YK, Min, WK: Full soft sets and full soft decision systems. J. Intell. 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