Outlier detection in Y-direction for multivariate multiple regression data is interesting since there are correlations between the dependent variables which is one cause of difficulty in detecting multivariate outliers, furthermore, the presence of the outliers may change the values of the estimators arbitrarily. Having an alternative method that can detect those outliers is necessary so that reliable results can be obtained. The multivariate outlier detection methods have been developed by many researchers. But in this study, Mahalanobis...

With the advancement of the Internet technology, customers can easily share opinions about services and products in forms of reviews. There can be large amount of reviews for popular products. Manually summarizing those reviews for important issues is a daunting task. Automatic opinion summarization is a solution to the problem. The task is more complicated for reviews written in Thai. Thai words are written continuously without space, and there is no symbol to identify the end of a sentence. Many reviews are written informally, thus accu...

In information age, data has become increasingly large, in both dimension (the number of features) and volume. Data mining processes, such as data classification and data clustering, performed on high dimensional data can be time-consuming and can produce poor results due to the problem so called curse of dimensionality. Feature selection is one of the fundamental techniques that selects only the most significant features and eliminates irrelevant and redundant features from the entire set of features. Filter-based feature selection is t...

A Data Warehouses is a repository of information integrated from a distributed data source. Information stored in a data warehouse is the form of the materialized view. Materializing view is a technique to improve query response time in a data warehouse. Deciding which of the appropriated views should be materialized views is one of the significant problems in data warehouse design. In order to solve this problem, constructing a search space close to optimal is a necessary task. It provides effective results for the selection of views to ...

การศึกษานี้ มีจุดประสงค์เพื่อคาดประมาณจำนวนการผลิตพยาบาลระดับวิชาชีพในประเทศไทย และจำนวนพยาบาลที่จะมีอยู่ในแรงงาน ระหว่าง พ.ศ. 2531-2000 แต่ละปี ทั้งนี้เพื่อให้ทราบถึงสภาพความต้องการพยาบาลวิชาชีพในตลาดแรงงานในช่วงทศวรรษหน้า นอกจากนี้ก็มุ่งศึกษากิจกรรมการพยาบาลของพยาบาลวิชาชีพ รวมทั้งปัจจัยที่มีอิทธิพลต่อการสูญเสียพยาบาลวิชาชีพไปจากแรงงานก่อนเวลาอันควร.