Dear colleagues, While using the programs in class, it became clear that one needs a provision to generate word frequency lists from the texts and to correct for stop words. The latter facility is now added to these programs (at http://www.leydesdorff.net/software/ti/stopword.exe ) and the former is set as a hyperlink to TextSTAT-2 of Dutch Linguistics Department of the Technical University in Berlin (at http://www.niederlandistik.fu-berlin.de/textstat/software-en.html). The programs themselves can be found at http://www.leydesdorff.net/software/ti and http://www.leydesdorff.net/software/fulltext , respectively. For advanced users it may be useful to remark that one can also replace the cosine matrices with Pearson correlation matrices by feeding the output file matrix.dbf into SPSS and running the appropriate routines. In my opinion, some convincing arguments have been made to use the cosine as the similarity criterion for the visualizations.
With best wishes, Loet ________________________________ Loet Leydesdorff Amsterdam School of Communications Research (ASCoR) Kloveniersburgwal 48, 1012 CX Amsterdam Tel.: +31-20- 525 6598; fax: +31-20- 525 3681 [EMAIL PROTECTED] ; http://www.leydesdorff.net/ _______________________________________________ fis mailing list [email protected] http://webmail.unizar.es/mailman/listinfo/fis
