2006-10-26 Ingo Feinerer * R/: Modified the TextDocCol constructur and various parsers. It is now modular and supports various file formats via plugins (see the new "Source" class). 2006-10-24 Ingo Feinerer * man/: Revised documentation after previous code changes. 2006-10-23 Ingo Feinerer * R/: Remaining changes as discussed with David. 2006-10-22 Ingo Feinerer * R/: Some changes as suggested by David. The rest will follow within the next days. 2006-09-26 Ingo Feinerer * man/: Finished documentation. 2006-09-25 Ingo Feinerer * man/: Wrote some documentation. 2006-09-24 Ingo Feinerer * R/: Further syntactic sugar in form of additional assignment and accessor methods. 2006-09-13 Ingo Feinerer * R/: Syntactic sugar in form of "length", "show" and "summary" operators. 2006-08-24 Ingo Feinerer * R/: Diverse updates. Mainly on default operators ("[" or "c") and dissimilarities. 2006-08-12 Ingo Feinerer * R/: Added similarity functions. * data/: Added english stopwords. 2006-08-07 Ingo Feinerer * data/: Examples compiled for new features * R/: Changes due to new structure. * NAMESPACE: Corrected namespace to reflect new structure. * R/termdocmatrix.R: Adapted for new naming scheme. 2006-08-06 Ingo Feinerer * R/textdoccol.R: Adapted code for new class structure. Wrote several transform and filter functions operating on text document collections (alias text document databases). * R/aobjects.R: Adapted class structure with inheritance, repositories and additional meta data. Loading files on demand is now possible. 2006-07-13 Ingo Feinerer * R/: Some cosmetic cleanups. * inst/: Removed vignette on clustering. That and much more is now described in the JSS paper on text mining. Based upon that article an elaborated vignette will be incorporated in the future. 2006-07-01 Ingo Feinerer * R/: Updated generic S4 methods to comply with signature changes in newer versions of R (> 2.3) 2006-03-12 Ingo Feinerer * ext/R/importRIS.R: Automatic RIS import is now possible. 2006-02-14 Ingo Feinerer * R/textdoccol.R: Added RIS HTML input format. 2006-01-21 Ingo Feinerer * R/textdoccol.R: Removed bug that caused invalid text document collections when handling many input files. 2006-01-11 Ingo Feinerer * R/textdoccol.R: Restructured and extended file import mechanism. * inst/doc/clustering.Rnw: Adapted vignette for use with ReutNews.rda * man/ReutNews.Rd: Documentation for ReutNews.rda * data/ReutNews.rda: A tiny Reuters21578 example data set. 2005-12-22 Ingo Feinerer * inst/doc/clustering.Rnw: Wrote a small vignette to present the clustering facilities of this package. 2005-12-15 Ingo Feinerer * R/aobjects.R: Changed package document structure to avoid class dependency problems. 2005-12-06 Ingo Feinerer * Wrote a script for the ModLewis Split for the Reuters-21578 XML data set. * Finished documentation and reordered directory structure. Now "R CMD check textmin" works without errors. 2005-12-04 Ingo Feinerer * src/: Various splits can now be easily created for the Reuters21578 data set. 2005-12-03 Ingo Feinerer * Updated documentation 2005-11-30 Ingo Feinerer * Wrote R documentation for some classes and methods. 2005-11-19 Ingo Feinerer * R/textdoccol.R: Constructor of textdoccol allows import of CSV files. See the questionnaire data/Umfrage.csv for such an example. We are now able to import files in Reuters-21578 XML format. * Changed class interfaces in various files. Weighting of the text matrix is now possible. 2005-11-08 Ingo Feinerer * R/textdoccol.R: One can build term-document matrices if nessecary (with buildTDM(...)) and fill the field tdm from a text document collection with it. * R/textmatrix.R: Wrote S4 class for term-document matrices. 2005-11-06 Ingo Feinerer * R/textdoccol.R: We now can read in a whole XML file with several news items. 2005-11-05 Ingo Feinerer * R/textdoccol.R: Set up an S4 class for a collection of text documents. A first attempt to read in XML input (like the RCV1 set) was made. * R/textdocument.R: Set up an S4 class for text documents. Wrote some accessor functions. * data/newsitem.xml: Added this XML file for testing purposes. It contains a single news item from the Reuters Corpus Volume 1 (RCV1) XML set. 2005-10-07 Ingo Feinerer * R/textmatrix.R (textmatrix): Removed the transpose of the original textmatrix as k-means clustering provided by R (kmeans) now works on this textmatrix. The result is a k-means text clustering with a similarity measure based upon word frequences. 2005-10-05 Ingo Feinerer * R/textmatrix.R: Adapted the preprocessing code from the R package "lsa" written by Fridolin Wild to build a document text matrix. 2005-10-02 Ingo Feinerer * Set up the R Text Mining Package infrastructure.