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PDL：面向计量经济学的对象导向编程环境AI 解读

PDL (for Perl data language) is a free, cross-platform, extension module that endows Perl with capabilities analogous to those of interactive systems for array manipulation such as Matlab and Gauss. PDL was founded by the astronomer Karl Glazebrook, and is an ongoing project that involves many Perl programmers. In Baiocchi (2003) it was shown how Perl can be used as a ‘glue’ language to solve a variety of data-processing problems. By design, Perl is not suitable for…

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GRETL：面向 GNU 一代的计量经济学软件AI 解读

There is also an obvious reference to the classic fairy tale 'Hansel and Gretel' in which Gretel is the mature and resourceful girl whose ingenuity saves her sibling's life from an evil witch who, after kidnapping them by means of gingerbread and candies, intends to fatten and eventually eat him.2 We mainly used version 0.997, the Windows release available at the time most of the review was written.The hardware was a 600 MHz Pentium III with 256 MB of RAM running on Windows…

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