نتایج جستجو برای: mean semi absolute deviation
تعداد نتایج: 833067 فیلتر نتایج به سال:
The geometries of 48 isomers of SiHmPHn (m + n ) 0-5), SiHmPHnSiHo (m + n + o ) 0-7), and (SiH3)3P have been optimized at the MP2/6-31G(d) level of theory. Silylenes and cyclic structures dominate the compounds with low numbers of hydrogens; nevertheless, there are several examples of silicon-phosphorus multiple bonding. Relative energies, heats of formation, and bond dissociation energies have...
Remote sensing-based woody biomass quantification in sparsely-vegetated areas is often limited when using only common broadband vegetation indices as input data for correlation with ground-based measured biomass information. Red edge indices and texture attributes are often suggested as a means to overcome this issue. However, clear recommendations on the suitability of specific proxies to prov...
In this paper, mean absolute deviation model for optimal portfolio selection problem is studied. Due to the uncertainty in the observed returns from financial markets, an improved robust formulation based on Bertsimas and Sim approach is presented. Then we study the robust model of the problem under correlated uncertainty set and give its equivalent model. Finally, the performance of the imp...
The paper employs Artificial Neural Network (ANN) to forecast foreign exchange rate in India during 1992-2009. We used two types of data set (daily and monthly) for US dollar, British pound, euro and Japanese yen. The performance of forecasting is quantified by using various loss functions namely root mean square error (RMSE), mean absolute error (MAE), mean absolute deviation (MAD) and mean ab...
the object of this paper is to establish a summability factor theorem for summabilitya, , k 1 k where a is the lower triangular matrix with non-negative entries satisfying certain conditions.
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