نتایج جستجو برای: e selection
تعداد نتایج: 1319392 فیلتر نتایج به سال:
As an effective method, the embedded hidden Markov model (E-HMM) has been widely used in pattern recognition. On applying the E-HMM to face recognition, the performance heavily depends on the selection of model parameters. Aiming at the problem of model selection, a selective ensemble of multi E-HMMs based face recognition algorithm is proposed. Experimental results illustrate that compared wit...
In the colour-polymorphic Midas cichlid fish species complex (Amphilophus citrinellus spp.), gold morphs occur at much lower frequencies (< 10%) than dark individuals. This might be surprising because gold coloration is dominant and coded for by a single Mendelian locus. Furthermore, gold individuals are considered to be competitively advantaged over dark ones because they grow faster and win a...
Vitamin E is a naturally occurring fat-soluble antioxidant which has been proposed as a treatment for both primary and secondary protection against cardiovascular (CV) events. Promising data from observational epidemiological studies associating higher vitamin E dietary intake with lower risk of CV events have not been validated in randomized controlled clinical trials assessing the effect of v...
With the emergence of innovative (networked) organization forms such as enhanced supply chain collaboration and modern forms of public-private partnerships (PPP), effective and efficient collaboration among network participants becomes crucial but often difficult to achieve. One of the leading factors which cause such defective collaboration is the asymmetric information issue among the network...
The development of wisdom agriculture with agricultural found Chinese demand. The development of wisdom agriculture has the characteristics of integrity, functional and systematic. The article analyzes the main issues and influencing factors according to the current wisdom agriculture in China, such as the gap between domestic and abroad, wisdom, the wisdom agriculture rural development e-gover...
Many large scale combinatorial problems have a complex structure that prevents a single algorithm and a single technology to outperform all the others on all instances. Therefore algorithms portfolios can be defined embedding more that one approach to the same problem. How do we choose among algorithms when all instances share the same problem structure? This paper is a first attempt to answer ...
The price war is the main market competition way for Chinese e-commerce retailers. Based on the price data from JD, Amazon and Dangdang, the paper conducted an empirical research on the price competition in B2C e-commerce market in China in terms of the average price level, minimum price level, price differential level and price variation. The research results show that the average price levels...
In the recent year, web service selection is becoming more and more prominent due to the large impact the web service in e-commerce.In selecting best services, several candidate services with similar capabilities are provided by different service providers. The question is, how upon a request over a B2B integration scenario, the system chooses a service among several candidate services offering...
The design of deterministic and fair mechanisms for selection among a set of self-motivated agents based solely on these agents’ input is a major challenge for electronic commerce. These mechanisms are a special case of zerosum games where the only possible outcomes are selections of a single agent among the set of agents. We assume the lack of an external coordinator, and therefore we focus on...
background: the immunomagnetic separation technique is the basis of monocyte isolation and further generation of monocyte-derived dendritic cells. objective: to compare the efficiency of monocyte positive and negative separation, concentration of beads, and their impact on generated dendritic cells. methods: monocytes were obtained using monoclonal antibody-coated magnetic beads followed the fi...
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