Many data analysis applications deal with large matrices and involve approximating the matrix using a small number of “components.” Typically, these components are linear combinations of the rows and columns of the matrix, and are thus difficult to interpret in terms of the original features of the input data. In this paper, we propose and study matrix approximations that are explicitly express...

Obstructive sleep apnea syndrome (OSAS) is a common condition in children and can result in serious neurocognitive, cardiovascular and metabolic complications if left untreated. Recently, the association between OSAS and maxillofacial malformation, and malocclusion has attracted much attention. Rapid maxillary expansion (RME), a commonly used orthodontic procedure to achieve a skeletal expansio...

Almond oil is used in many cosmetic products and as a snack in confectionery (marzipan, "turrón", nougat), food products (almond milk, ice cream, chocolate), culinary recipes and also cosmetic base. Seeds of 18 almond genotypes and cultivars: Azar, Rabie, A200, Shahroud13, Zodgol2, A230, Tuono, Shahrekord1, Shahroud 21, Najafabad, Nonpareil, Zodgol1, Yalda, K12-8, Supernova, Shekofeh, Sahand...

Multiplicative regression model or accelerated failure time model, which becomes linear regression model after logarithmic transformation, is useful in analyzing data with positive responses, such as stock prices or life times, that are particularly common in economic/financial or biomedical studies. Least squares or least absolute deviation are among the most widely used criterions in statisti...

(3) The error is normally of the order of 1 percent a t the higher levels (5,000-20,000 feet) of an average curve. (4) When applied to the upper levels of a very stable curve (e. g. one featuring an extensive inversion), the rule leads to an overestimation of the height which may mount , to 4 percent or more in an extreme case. The formula i s least accurate when applied to the upper levels of ...

This paper used error back propagation algorithm and regression analysis to analyze and predict untranslated and translated Nigeria Stock Market Price (NSMP). Nigeria stock market prices were collected for the periods of seven hundred and twenty days and grouped into untranslated and translated train, validation and test data. A zero mean unit variance transformation was used to normalize the i...

We examine methods to estimate the average and variance of test error rates over a set of classi ers We begin with the process of drawing a classi er at random for each example Given validation data the average test error rate can be estimated as if validating a single classi er Given the test example inputs the variance can be computed exactly Next we consider the process of drawing a classi e...

OBJECTIVE To evaluate the long-term mandibular morphological changes induced by early treatment of class III malocclusion with rapid maxillary expansion (RME) and facial mask (FM). MATERIALS AND METHODS Twenty-five subjects [10 boys, 15 girls; mean age at T1 (start of treatment) 9.3±1.6 years] with class III disharmony were treated with RME and FM therapy followed by fixed appliances. The pat...

Short-term wind speed forecasting is useful for power system to regulate power dispatching plan, decrease reserve power needed and increase the reliability of system. The method of the short-term wind speed prediction is proposed in this paper. The data of wind speed in Dafeng, Jiangsu Province of China is predicted by the model combined with the grey system theory (GST). A grey system model co...