نتایج جستجو برای: complex adaptive system
تعداد نتایج: 2959001 فیلتر نتایج به سال:
An adaptive approach for dynamic voltage scheduling on processors is presented based on workload prediction by filtering a trace history. The effects of update frequency and filtering strategy on the energy savings is analyzed. A performance hit metric is defined and techniques to minimize energy under a given performance requirement are outlined. Our results demonstrate that up to two orders o...
The development of adaptive skills is determined by factors inherent to a person, as well as by opportunities and expectations of the socio-cultural environment in which the person grows up. This paper analyses the adaptive behaviour of children with mild intellectual disability (MID) living with families or in institutions for children without parental care. The sample consisted of 95 children...
Building on results from data compression, we prove nearly tight bounds on how well sequences of length n can be predicted in terms of the size σ of the alphabet and the length k of the context considered when making predictions. We compare the performance achievable by an adaptive predictor with no advance knowledge of the sequence, to the performance achievable by the optimal static predictor...
Cognitive diagnostic modeling has become an exciting new field of psychometric research. These models aim to diagnose examinees’ mastery status of a group of discretely defined skills, or attributes, thereby providing them with detailed information regarding their specific strengths and weaknesses. Combining cognitive diagnosis with computer adaptive assessments has emerged as an important part...
A lot of significant data describing the behavior or/and actions of systems can be collected in several domains. These data define some aspects, called features, that can be clustered in several classes. A qualitative or quantitative value for each feature is stored from measurements or observations. In this paper, the problem of finding independent features for getting the best accuracy on cla...
Authoring of Adaptive Educational Hypermedia is a complex activity requiring the combination of a range of design and validation techniques. We demonstrate how Adaptive Educational Hypermedia can be transformed into CAVIAr courseware validation models allowing for its validation. The model-based representation and analysis of different concerns and model-based mappings and transformations are k...
13 The focus of this review is to provide a thorough study of this link adaptation method particularly adaptive modulation and its related issues in various OFDM systems. The organization of this paper is as follows. Section II gives an overview of a typical OFDM system. Section III reviews significant adaptive modulation approaches contributed by several authors in detail. This section also in...
1. Dispersal and gene flow can have a variety of interacting effects on evolution. These effects can either promote or constrain adaptive divergence through either genetic or demographic routes. The relative importance of these effects is unknown because few attempts have been made to conceptually integrate and test them. 2. We draw a broad distinction between situations with vs. without strong...
Adaptive reuse offers significant opportunities for energy efficiency and sustainability in the built environment. Design of energy-efficient and high-performance adaptive reuse requires that building performance and simulations tools are used and integrated with the design process. The objectives of this research is to provide building researchers and practitioners with a better understanding ...
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