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SAS Global Forum 2011 Data Mining and Text Analytics



In this paper, the Perl regular expression facility that provides a concise and flexible means for matching strings of text is extended to the macro environment using three new macro functions. Consequently, this allows direct pattern matching and replacement in macro variables, facilitating the construction of flexible and customized functions through internally parsing patterned inputs. This is illustrated with a specific example where we outline the key steps to build an automated variable selection process in the generalized linear models, with additional capability to perform joint test of several variables such as spline bases

Year: 2013
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