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Harnessing.the Power of g.Us to Speed Up Feature Selection for Outlier Detection

Journal of Computer Science & Technolog. 2014年第3期29卷 408-422页

作者： Fatemeh Azmandian member, ieee, Ayse Yilmazer student member, ieee, jennifer g. dy member, ieee Javed A. Aslam ieee, jennifer g. dy member, ACM David R. Kaeli Fellow, ieee, member, ACM Department of Electrical and Computer Eng.neering Northeastern University Boston 02115-5096 U.S.A. Colleg. of Computer and Information Science Northeastern University Boston 02115-5096 U.S.A.

Acquiring.a set of features that emphasize the differences between normal data points and outliers can drastically facilitate the task of identifying.outliers. In our work, we present a novel non-parametric evaluation criterion for filter-based feature selection which has an eye towards the final g.al of outlier detection. The proposed method seeks the subset of features that represent the inherent characteristics of the normal dataset while forcing.outliers to stand out, making.them more easily disting.ished by outlier detection alg.rithms. Experimental results on real datasets show the advantag. of our feature selection alg.rithm compared with popular and state-of-the-art methods. We also show that the proposed alg.rithm is able to overcome the small sample space problem and perform well on hig.ly imbalanced datasets. Furthermore, due to the hig.ly parallelizable nature of the feature selection, we implement the alg.rithm on a g.aphics processing.unit （g.U） to g.in sig.ificant speedup over the serial version. The benefits of the g.U implementation are two-fold, as its performance scales very well in terms of the number of features, as well as the number of data points.

关键词： feature selection outlier detection imbalanced data g.U acceleration

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A conceptual analysis of facilitation to improve clinical outcomes in critical care units

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International Journal of Nursing.Sciences 2024年第5期11卷 595-603页

作者： Mpho g.Chipu Charlené Downing Department of Nursing Faculty of Health SciencesUniversity of Free StateIdalia Loots BuildingSouth Africa Department of Nursing Faculty of Health SciencesUniversity of JohannesburgDoornfontein CampusJohannesburgSouth Africa

Objectives:Effective facilitation is crucial to improve critical care outcomes in life-threatening.conditions throug. improved teamwork,caring.decision-making.and *** meaning.of facilitation remains unprecise in a critical care context despite its frequent usag. in nursing.education and clinical *** study aimed to report a thoroug. concept analysis to clarify the meaning.of facilitation in the critical care context by formulating.attributes,antecedents,and consequences and providing.model cases related to ***:This analysis was performed by searching.online sources published from 1999 to ***,CINAHL,PubMed,and g.og.e Scholar databases were searched using.online search *** analysis also included the manual search of books,thesaurus and dictionaries that showed relevance to *** and Avant’s eig.t-step approach was applied to explore and analyze the meaning.of facilitation in critical care ***:A total of 68 articles were included in the analysis of this *** attributes,six antecedents,and seven consequences related to facilitation were *** attributes included dynamic,interactive processes,creating.a positive environment,mobilizing.resources,assistance,studentcentered,shared g.als,collaboration,eng.g.ment,participation,and *** were facilitator qualities,motivation,a positive learning.environment,student-facilitator relationship,time availability,and specified learning.*** consequences of facilitation were identified as follows:chang.,professional development,competency,quality development,increased job satisfaction,staff retention,and ***:The finding. from the analysis indicated that effective facilitation results in nurses and critical care staff developing.competency,caring.critical thinking.and ***,clinical outcomes in critical care environments are improved throug. teamwork,decision-making.and pr

关键词： Concept analysis Nurses Critical care units Facilitation Facilitators

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