نتایج جستجو برای: hierarchical concepts
تعداد نتایج: 241346 فیلتر نتایج به سال:
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We have come a long way and finally are about to study calculus. Many of you might have taken some courses in the past where you learned a number of formulas to calculate the derivatives and integrals of certain functions. The purpose of this course, however, is not to memorize these formulas mindlessly. Rather, our goals are to understand the mathematical concepts underlying such formulas and ...
The monitoring of herbaceous fuel moisture content is a crucial activity in order to assess savanna fire risks. Faced with the difficulty of managing wide areas of vegetated surfaces, remote sensing appears an attractive alternative for terrestrial measurements because of its advantages related to temporal resolution and spatial coverage. Earth observation (EO)-based vegetation indices (VIs) an...
abstract: performance evaluation models of information and communication technology (ict) sectors have been already considered with many perspectives of ict management. since ict has two distinct aspects of usefulness and harmfulness for the environment, therefore, this research with regard to the new dimension named environment, is going to present a new performance evaluation model with the a...
as information has the role of organization asset, its protection is the key to the survival of any organization. information security management system (isms) defines protection of information in three specific concepts: information confidentiality, accuracy, and availability. many failures in implementing isms rooted in organizational problems and lack of attention to the state of readiness o...
Integration of alternative technological concepts such as switching to fuels, advanced energy efficiency, and carbon capture storage in existing industrial systems can prove highly effective at minimizing emissions; however, their adoption is low since solutions using these raise costs considerably. The hypothesis this work a hierarchical combination reduce mitigation cost. To end mixed method ...
This paper presents a novel technique of document clustering based on frequent concepts. The proposed technique, FCDC (Frequent Concepts based document clustering), a clustering algorithm works with frequent concepts rather than frequent items used in traditional text mining techniques. Many well known clustering algorithms deal with documents as bag of words and ignore the important relationsh...
This paper proposes a new image-semantic measure, named "Semantico-Visual Relatedness of Concepts" (SVRC ), to estimate the semantic similarity between concepts. The proposed measure incorporates visual, conceptual and contextual information to provide a measure which is more meaningful and more representative of image semantics. We also propose a new methodology to automatically build a semant...
In this paper we explore the concept of hierarchy as a quantifiable descriptor of ordered structures, departing from the definition of three conditions to be satisfied for a hierarchical structure: order, predictability, and pyramidal structure. According to these principles, we define a hierarchical index taking concepts from graph and information theory. This estimator allows to quantify the ...
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