Sentiment classification is a special task of text classification whose objective is to classify a text according to the sentimental polarities of opinions it contains e.g., favorable or unfavorable, positive or negative. This is especially a problem for the tweets sentiment analysis. Since the topics in Twitter are very diverse, it is impossible to train a universal classifier for all topics. ...

This article describes a new non-parametric regression method that extends additive regression techniques to allow modeling of interactions among predictor variables. The proposed models consist of sums of smooth functions of one or more predictor variables. Each term involving more than one predictor is assumed to be a composition of bivariate functions of simpler terms in the model. The metho...

Passing-Bablok regression for method comparison is a robust, nonparametric method for fitting a straight line to two-dimensional data where both variables, X and Y, are measured with error. It is useful when you have two devices that should give the same measurements and you want to compare them. This is accomplished by test estimate a linear regression line and testing whether the intercept is...

In response to criticism over inherent flaws associated with traditional cross window research designs and analytical methods in turnover research, new methodological approaches such as survival analysis have been proposed. First, this study reviews some major methodological issues. Second, using a national sample, this study compares the results from traditional analytical methods such as OLS ...

multivariate process capability indices (mpci) show how well a manufacturing process can meet specifica-tion limits when quality characteristics enclose a relative correlation. process capability is an important and commonly used metric for assessing and improving the quality of a production process. when quality charac-teristics of a product are correlated then an attractive comes close to mpc...