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Revision 766 - (view) (download)
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1 : feinerer 766 2007-07-14 Ingo Feinerer <h0125130@wu-wien.ac.at>
2 :    
3 :     * R/reader.R (readPDF): Added PDF reader.
4 :    
5 : feinerer 765 2007-07-13 Ingo Feinerer <h0125130@wu-wien.ac.at>
6 :    
7 :     * DESCRIPTION: Moved proxy from Depends to Imports to avoid name clashes.
8 :    
9 :     * inst/stopwords/english.dat: Added the term "yes" to stopwords.
10 :    
11 :     * R/termdocmatrix.R (dim): dim function for TermDocMatrix.
12 :    
13 :     * R/preprocess.R (convertMboxEml): Accepts gzipped mboxes.
14 :    
15 : feinerer 763 2007-07-11 Ingo Feinerer <h0125130@wu-wien.ac.at>
16 :    
17 :     * R/distmeasure.R (dissimilarity): Replaced dists call from
18 :     package cba by new dist call from package proxy.
19 :    
20 : feinerer 761 2007-07-10 Ingo Feinerer <h0125130@wu-wien.ac.at>
21 :    
22 :     * inst/doc/tm.Rnw: Described removeSparseTerms and Dictionary.
23 :    
24 : feinerer 760 2007-06-21 Ingo Feinerer <h0125130@wu-wien.ac.at>
25 :    
26 :     * R/termdocmatrix.R: require() uses the quietly option to suppress
27 :     loading messages.
28 :    
29 : feinerer 758 2007-06-12 Ingo Feinerer <h0125130@wu-wien.ac.at>
30 :    
31 :     * R/dictionary.R: Added dictionary support.
32 :    
33 : feinerer 757 2007-06-07 Ingo Feinerer <h0125130@wu-wien.ac.at>
34 :    
35 :     * R/aobjects.R: Added classes for Reuters21578 XML and RCV1
36 :     documents. This simplifies some functions, e.g., asPlain.
37 :    
38 : feinerer 756 2007-06-06 Ingo Feinerer <h0125130@wu-wien.ac.at>
39 :    
40 :     * inst/doc/tm.Rnw: Fixed some typos in vignette.
41 :    
42 : feinerer 755 2007-06-03 Ingo Feinerer <h0125130@wu-wien.ac.at>
43 :    
44 :     * R/textdoccol.R (replaceWords): Added method to replace a set of
45 :     words by a single word. Useful for synonyms.
46 :    
47 : feinerer 754 2007-05-22 Ingo Feinerer <h0125130@wu-wien.ac.at>
48 :    
49 :     * man/TermDocMatrix.Rd: Fixed documentation on Data slot.
50 :    
51 : feinerer 752 2007-05-19 Ingo Feinerer <h0125130@wu-wien.ac.at>
52 :    
53 :     * R/termdocmatrix.R (textvector): Small fix for dealing with empty
54 :     vectors. Thanks to Ariel Maguyon for his error report.
55 :     (removeSparseTerms): New function to remove columns from a
56 :     term-document matrix exceeding a sparse factor.
57 :    
58 : feinerer 751 2007-05-15 Ingo Feinerer <h0125130@wu-wien.ac.at>
59 :    
60 :     * man/tmUpdate.Rd: Corrected documentation on readerControl parameter.
61 :    
62 : feinerer 750 2007-05-11 Ingo Feinerer <h0125130@wu-wien.ac.at>
63 :    
64 :     * man/sFilter.Rd: Corrected documentation on statement format (use
65 :     '==' instead of '=').
66 :    
67 : feinerer 749 2007-05-08 Ingo Feinerer <h0125130@wu-wien.ac.at>
68 :    
69 :     * R/aobjects.R (StructuredTextDocument): Inherits from
70 :     TextDocument.
71 :    
72 : feinerer 748 2007-05-04 Ingo Feinerer <h0125130@wu-wien.ac.at>
73 :    
74 :     * R/termdocmatrix.R (findFreqTerms): Perform efficient computation
75 :     on sparse matrices as proposed by Martin Maechler.
76 :    
77 : feinerer 747 2007-04-27 Ingo Feinerer <h0125130@wu-wien.ac.at>
78 :    
79 :     * R/textdoccol.R: Removed \code{dbDisconnect} calls since last
80 :     \pkg{filehash} version makes them deprecated.
81 :    
82 : feinerer 744 2007-04-22 Ingo Feinerer <h0125130@wu-wien.ac.at>
83 :    
84 :     * R/termdocmatrix.R (textvector): Stemming is now performed before
85 :     erasing stopwords.
86 :     (weightMatrix): Adapted to handle sparse matrices.
87 :     (TermDocMatrix): Sparse matrix is now efficiently built by
88 :     direct stepwise insertion of row values into it.
89 :    
90 : feinerer 741 2007-04-21 Ingo Feinerer <h0125130@wu-wien.ac.at>
91 :    
92 :     * DESCRIPTION: Replaced \pkg{filehashSQLite} with \pkg{filehash}
93 :     due to ongoing problems. For our purposes the latter is as useful
94 :     as the replaced package.
95 :    
96 : feinerer 738 2007-04-20 Ingo Feinerer <h0125130@wu-wien.ac.at>
97 :    
98 :     * man/TextDocCol.Rd: Replaced \code{readPlain} with \code{object@DefaultReader}.
99 :    
100 :     * man/TermDocMatrix.Rd: Remove deprecated \code{language} argument.
101 :    
102 : feinerer 737 2007-04-15 Ingo Feinerer <h0125130@wu-wien.ac.at>
103 :    
104 :     * R/resolve.R (resolveISOCode): Added ISO 639-1 codes for
105 :     languages with available stopwords.
106 :    
107 : feinerer 736 2007-04-14 Ingo Feinerer <h0125130@wu-wien.ac.at>
108 :    
109 :     * inst/doc/tm.Rnw: Minor corrections in the vignette.
110 :    
111 : feinerer 731 2007-04-11 Ingo Feinerer <h0125130@wu-wien.ac.at>
112 :    
113 : feinerer 732 * DESCRIPTION: Update to version 0.2, since a lot of new features
114 :     have been integrated.
115 : feinerer 731
116 : feinerer 732 * inst/stopwords: Updated existing stopwords and added stopwords
117 :     for various other languages.
118 :    
119 : feinerer 729 2007-04-10 Ingo Feinerer <h0125130@wu-wien.ac.at>
120 :    
121 : feinerer 730 * man/: Updated documentation.
122 :    
123 : feinerer 729 * Work/testDb.R: Script to test database stuff.
124 :    
125 :     * R/: Fixed various database related bugs. Seems to be rather
126 :     useable now, i.e., consider as alpha status for now.
127 :    
128 : feinerer 727 2007-04-08 Ingo Feinerer <h0125130@wu-wien.ac.at>
129 :    
130 :     * R/: Fixed some bugs related to database support.
131 :    
132 : feinerer 726 2007-04-07 Ingo Feinerer <h0125130@wu-wien.ac.at>
133 :    
134 :     * man/: Added a lot of examples to the manuals.
135 :    
136 : feinerer 725 2007-04-05 Ingo Feinerer <h0125130@wu-wien.ac.at>
137 :    
138 :     * man/: Updated parts of the documentation.
139 :    
140 :     * R/textdoccol.R (asPlain): Added conversion from newsgroup
141 :     documents to plain text documents.
142 :    
143 : feinerer 722 2007-04-01 Ingo Feinerer <h0125130@wu-wien.ac.at>
144 :    
145 : feinerer 724 * R/textdoccol.R: Finished experimental database support. Not yet
146 :     intensively tested.
147 :    
148 : feinerer 723 * R/source.R: Now each source has a default reader.
149 :    
150 : feinerer 722 * R/reader.R: \code{FunctionGenerator} is now an attribute, not a
151 :     class anymore.
152 :    
153 :     * R/plaintextdoc.R: Custom show method for plain text documents.
154 :    
155 :     * R/aobjects.R: Added a class for structured text documents.
156 :    
157 :     * R/reader.R: Replaced remaining \code{parser} occurrences with
158 :     \code{reader}.
159 :    
160 :     * R/textdoccol.R (summary): Indent tags.
161 :    
162 : feinerer 725 * R/textdoccol.R (removePunctuation): Transform method to remove
163 : feinerer 722 punctuation marks.
164 :    
165 : feinerer 721 2007-03-21 Ingo Feinerer <h0125130@wu-wien.ac.at>
166 :    
167 :     * R/textdoccol.R (sFilter): Simplified sFilter significantly by
168 :     using prescindMeta().
169 :    
170 : feinerer 719 2007-03-18 Ingo Feinerer <h0125130@wu-wien.ac.at>
171 :    
172 :     * R/textdoccol.R: Improved database support.
173 :    
174 : feinerer 717 2007-03-16 Ingo Feinerer <h0125130@wu-wien.ac.at>
175 :    
176 : feinerer 718 * R/termdocmatrix.R (TermDocMatrix): Uses sparse matrices.
177 :    
178 : feinerer 717 * R/resolve.R (resolveISOcode): Extracts the language from a ISO
179 :     language code.
180 :    
181 :     * R/textdoccol.R (TextDocCol): Refactored several parser arguments
182 :     into parserControl argument.
183 :    
184 :     * R/aobjects.R (TextDocument): Introduced the "Language" slot.
185 :    
186 : feinerer 713 2007-03-14 Ingo Feinerer <h0125130@wu-wien.ac.at>
187 :    
188 : feinerer 715 * Work/tmDataSetup.R: The datasets acq and crude can now be
189 :     created on the fly.
190 :    
191 : feinerer 713 * R/stopwords.R: Introduced a function returning the stopwords for
192 :     a given language (English, German and French at the moment)
193 :    
194 :     * R/textdoccol.R (stemDoc): Stemming uses Rstem if available,
195 :     otherwise falls back to Snowball package.
196 :    
197 : feinerer 711 2007-01-30 Ingo Feinerer <h0125130@wu-wien.ac.at>
198 :    
199 :     * man/dissimilarity-methods.Rd: Make clear that any method offered
200 :     by "dists" from package "cba" can be used.
201 :    
202 : feinerer 708 2007-01-22 Ingo Feinerer <h0125130@wu-wien.ac.at>
203 :    
204 : feinerer 710 * inst/doc/tm.Rnw: Fixed quotes-appearing-as-boxes-bug according
205 :     to Kurt's latex suggestion. Removed points and underscores in
206 :     variable names for consistent naming.
207 :    
208 : feinerer 708 * DESCRIPTION: Update to version 0.1-2.
209 :    
210 :     * man/TextRepository.Rd: Fixed bug in documentation.
211 :    
212 : feinerer 704 2007-01-12 Ingo Feinerer <h0125130@wu-wien.ac.at>
213 :    
214 :     * DESCRIPTION: Update to version 0.1-1.
215 :    
216 : feinerer 702 2007-01-09 Ingo Feinerer <h0125130@wu-wien.ac.at>
217 :    
218 :     * R/textdoccol.R (stemDoc): Use Rstem::wordStem instead of
219 :     wordStem.
220 :    
221 : feinerer 698 2007-01-06 Ingo Feinerer <h0125130@wu-wien.ac.at>
222 :    
223 :     * R/: Changes due to Kurt's review.
224 :    
225 : feinerer 694 2006-12-31 Ingo Feinerer <h0125130@wu-wien.ac.at>
226 :    
227 :     * R/: Implemented improvements based upon comments by David
228 :     Meyer.
229 :    
230 : feinerer 691 2006-12-17 Ingo Feinerer <h0125130@wu-wien.ac.at>
231 :    
232 :     * inst/doc/: Rewrote vignette.
233 :    
234 :     * man/: Improved documentation.
235 :    
236 : feinerer 690 2006-12-16 Ingo Feinerer <h0125130@wu-wien.ac.at>
237 :    
238 :     * man/: Updated documentation.
239 :    
240 :     * DESCRIPTION: Changed package name to "tm". Updated version to
241 :     0.1 for first CRAN release.
242 :    
243 :     * inst/texts/gmane.comp.lang.r.general.mbox: mbox Gmane R mailing
244 :     list archive example.
245 :    
246 :     * inst/texts/gmane.comp.lang.r.gr.rdf: RSS Gmane R mailing list
247 :     archive example.
248 :    
249 :     * R/preprocess.R (convert_mbox_eml): A simple e-mail converter
250 :     from (several mails per box) mbox format to (single mail per file)
251 :     eml format.
252 :    
253 : feinerer 689 2006-12-08 Ingo Feinerer <h0125130@wu-wien.ac.at>
254 :    
255 :     * data/crude.rda: Rebuilt.
256 :    
257 :     * data/acq.rda: Rebuilt.
258 :    
259 :     * R/reader.R: Factored out reader and parser methods from
260 :     textdoccol.R.
261 :    
262 :     * R/source.R: Factored out Source methods from aobjects.R and
263 :     textdoccol.R.
264 :     (GmaneRSource): Encapsulates Gmane R mailing list archive RSS
265 :     feeds.
266 :    
267 :     * R/textdoccol.R (DirSource): Added support for recursive
268 :     traversal of directories.
269 :    
270 :     2006-12-07 Ingo Feinerer <h0125130@wu-wien.ac.at>
271 :    
272 :     * R/textdoccol.R ([[): Loads the document corpus automatically
273 :     into memory upon access.
274 :     (tm_transform, tm_filter): Removed several checks whether the
275 :     document is already loaded ([[ ensures this now).
276 :     (gmane_r_reader): Reader for RSS feeds as provided by the Gmane R
277 :     mailing list archive.
278 :    
279 :     2006-12-06 Ingo Feinerer <h0125130@wu-wien.ac.at>
280 :    
281 :     * R/aobjects.R (TextDocument): Is now a virtual class.
282 :     (Source): Is now a virtual class.
283 :    
284 :     2006-12-05 Ingo Feinerer <h0125130@wu-wien.ac.at>
285 :    
286 :     * R/textdoccol.R (c): Support for an arbitrary number of document
287 :     collections.
288 :    
289 : feinerer 77 2006-11-26 Ingo Feinerer <h0125130@wu-wien.ac.at>
290 :    
291 :     * R/textrepo.R: Updated TextRepository (constructor), append_elem,
292 :     append_meta and remove_meta.
293 :    
294 :     * R/textdoccol.R: Removed modify_metadata method.
295 :    
296 :     * R/textrepo.R: Removed modify_metadata method.
297 :    
298 :     * R/textdoccol.R (remove_meta): Supports removal of document
299 :     collection metadata and document (= in data frame) metadata.
300 :    
301 : feinerer 76 2006-11-23 Ingo Feinerer <h0125130@wu-wien.ac.at>
302 :    
303 :     * R/textdoccol.R (append_doc): Bug fix for handling empty metadata.
304 :    
305 :     * data/crude.rda: Rebuilt.
306 :    
307 :     * data/acq.rda: Rebuilt.
308 :    
309 :     * inst/doc/textmin.Rnw: Updated vignette to reflect code changes.
310 :    
311 :     * R/textdoccol.R ([): Bug fix for subsetting a document
312 :     collection's data frame.
313 :    
314 : feinerer 75 2006-11-22 Ingo Feinerer <h0125130@wu-wien.ac.at>
315 :    
316 :     * R/textdoccol.R: Bug fixes in s_filter. Added full query support
317 :     to s_filter.
318 :    
319 :     * R/textdoccol.R: Local text documents' metadata can now be copied
320 :     to a document collection's data frame with prescind_meta.
321 :    
322 : feinerer 73 2006-11-21 Ingo Feinerer <h0125130@wu-wien.ac.at>
323 :    
324 : feinerer 74 * R/: Text documents' slot metadata is now accessible in s_filter.
325 :    
326 : feinerer 73 * R/: Rewrote s_filter function (has still some restrictions).
327 :    
328 : feinerer 72 2006-11-20 Ingo Feinerer <h0125130@wu-wien.ac.at>
329 :    
330 :     * R/: Various fixes in handling metadata.
331 :    
332 :     * R/: Added update mechanism for text document collections.
333 :    
334 : feinerer 71 2006-11-19 Ingo Feinerer <h0125130@wu-wien.ac.at>
335 :    
336 :     * R/: Merging of document collections now creates a binary tree
337 :     for reconstructing merged document collections.
338 :    
339 :     * R/: Redesign of metadata for document collections.
340 :    
341 : feinerer 70 2006-11-07 Ingo Feinerer <h0125130@wu-wien.ac.at>
342 :    
343 :     * R/: Messages now use \code{ngettext}.
344 :    
345 : feinerer 69 2006-11-03 Ingo Feinerer <h0125130@wu-wien.ac.at>
346 :    
347 :     * R/: Added functions for modifying and removing metadata.
348 :    
349 : feinerer 67 2006-11-01 Ingo Feinerer <h0125130@wu-wien.ac.at>
350 :    
351 :     * man/: Updated some documentation.
352 :    
353 :     * R/: Corrected some connection issues.
354 :    
355 :     * inst/doc: Worked on the vignette.
356 :    
357 : feinerer 65 2006-10-31 Ingo Feinerer <h0125130@wu-wien.ac.at>
358 :    
359 : feinerer 66 * inst/: Added texts and started vignette.
360 :    
361 : feinerer 65 * R/: Final changes based upon David's comments.
362 :    
363 : feinerer 64 2006-10-29 Ingo Feinerer <h0125130@wu-wien.ac.at>
364 :    
365 :     * NAMESPACE: Corrected exports (generic methods need exportMethods
366 :     directives!).
367 :    
368 : feinerer 63 2006-10-26 Ingo Feinerer <h0125130@wu-wien.ac.at>
369 :    
370 :     * R/: Modified the TextDocCol constructur and various parsers. It
371 :     is now modular and supports various file formats via plugins (see
372 :     the new "Source" class).
373 :    
374 : feinerer 62 2006-10-24 Ingo Feinerer <h0125130@wu-wien.ac.at>
375 :    
376 :     * man/: Revised documentation after previous code changes.
377 :    
378 : feinerer 61 2006-10-23 Ingo Feinerer <h0125130@wu-wien.ac.at>
379 :    
380 :     * R/: Remaining changes as discussed with David.
381 :    
382 : feinerer 60 2006-10-22 Ingo Feinerer <h0125130@wu-wien.ac.at>
383 :    
384 :     * R/: Some changes as suggested by David. The rest will follow
385 :     within the next days.
386 :    
387 : feinerer 59 2006-09-26 Ingo Feinerer <h0125130@wu-wien.ac.at>
388 :    
389 :     * man/: Finished documentation.
390 :    
391 : feinerer 58 2006-09-25 Ingo Feinerer <h0125130@wu-wien.ac.at>
392 :    
393 :     * man/: Wrote some documentation.
394 :    
395 : feinerer 56 2006-09-24 Ingo Feinerer <h0125130@wu-wien.ac.at>
396 :    
397 :     * R/: Further syntactic sugar in form of additional assignment and
398 :     accessor methods.
399 :    
400 : feinerer 54 2006-09-13 Ingo Feinerer <h0125130@wu-wien.ac.at>
401 :    
402 :     * R/: Syntactic sugar in form of "length", "show" and "summary"
403 : feinerer 56 operators.
404 : feinerer 54
405 : feinerer 53 2006-08-24 Ingo Feinerer <h0125130@wu-wien.ac.at>
406 :    
407 :     * R/: Diverse updates. Mainly on default operators ("[" or "c")
408 :     and dissimilarities.
409 :    
410 : feinerer 52 2006-08-12 Ingo Feinerer <h0125130@wu-wien.ac.at>
411 :    
412 :     * R/: Added similarity functions.
413 :    
414 :     * data/: Added english stopwords.
415 :    
416 : feinerer 50 2006-08-07 Ingo Feinerer <h0125130@wu-wien.ac.at>
417 :    
418 : feinerer 51 * data/: Examples compiled for new features
419 :    
420 :     * R/: Changes due to new structure.
421 :    
422 : feinerer 50 * NAMESPACE: Corrected namespace to reflect new structure.
423 :    
424 :     * R/termdocmatrix.R: Adapted for new naming scheme.
425 :    
426 : feinerer 49 2006-08-06 Ingo Feinerer <h0125130@wu-wien.ac.at>
427 :    
428 :     * R/textdoccol.R: Adapted code for new class structure. Wrote
429 :     several transform and filter functions operating on text document
430 :     collections (alias text document databases).
431 :    
432 :     * R/aobjects.R: Adapted class structure with inheritance,
433 :     repositories and additional meta data. Loading files on demand is
434 :     now possible.
435 :    
436 : feinerer 48 2006-07-13 Ingo Feinerer <h0125130@wu-wien.ac.at>
437 :    
438 :     * R/: Some cosmetic cleanups.
439 :    
440 :     * inst/: Removed vignette on clustering. That and much more is now
441 :     described in the JSS paper on text mining. Based upon that
442 :     article an elaborated vignette will be incorporated in the future.
443 :    
444 : feinerer 42 2006-07-01 Ingo Feinerer <h0125130@wu-wien.ac.at>
445 :    
446 :     * R/: Updated generic S4 methods to comply with signature changes
447 :     in newer versions of R (> 2.3)
448 :    
449 : feinerer 41 2006-03-12 Ingo Feinerer <h0125130@wu-wien.ac.at>
450 :    
451 :     * ext/R/importRIS.R: Automatic RIS import is now possible.
452 :    
453 : feinerer 40 2006-02-14 Ingo Feinerer <h0125130@wu-wien.ac.at>
454 :    
455 :     * R/textdoccol.R: Added RIS HTML input format.
456 :    
457 : feinerer 39 2006-01-21 Ingo Feinerer <h0125130@wu-wien.ac.at>
458 :    
459 :     * R/textdoccol.R: Removed bug that caused invalid text document
460 :     collections when handling many input files.
461 :    
462 : feinerer 36 2006-01-11 Ingo Feinerer <h0125130@wu-wien.ac.at>
463 :    
464 : feinerer 37 * R/textdoccol.R: Restructured and extended file import
465 :     mechanism.
466 :    
467 : feinerer 36 * inst/doc/clustering.Rnw: Adapted vignette for use with
468 :     ReutNews.rda
469 :    
470 :     * man/ReutNews.Rd: Documentation for ReutNews.rda
471 :    
472 :     * data/ReutNews.rda: A tiny Reuters21578 example data set.
473 :    
474 : feinerer 34 2005-12-22 Ingo Feinerer <h0125130@wu-wien.ac.at>
475 :    
476 :     * inst/doc/clustering.Rnw: Wrote a small vignette to present the
477 :     clustering facilities of this package.
478 :    
479 : feinerer 33 2005-12-15 Ingo Feinerer <h0125130@wu-wien.ac.at>
480 :    
481 :     * R/aobjects.R: Changed package document structure to avoid class
482 :     dependency problems.
483 :    
484 : feinerer 28 2005-12-06 Ingo Feinerer <h0125130@wu-wien.ac.at>
485 :    
486 : feinerer 29 * Wrote a script for the ModLewis Split for the Reuters-21578 XML
487 :     data set.
488 :    
489 : feinerer 28 * Finished documentation and reordered directory structure. Now "R
490 :     CMD check textmin" works without errors.
491 :    
492 : feinerer 27 2005-12-04 Ingo Feinerer <h0125130@wu-wien.ac.at>
493 :    
494 :     * src/: Various splits can now be easily created for the
495 :     Reuters21578 data set.
496 :    
497 : feinerer 26 2005-12-03 Ingo Feinerer <h0125130@wu-wien.ac.at>
498 :    
499 :     * Updated documentation
500 :    
501 : feinerer 25 2005-11-30 Ingo Feinerer <h0125130@wu-wien.ac.at>
502 :    
503 :     * Wrote R documentation for some classes and methods.
504 :    
505 : feinerer 21 2005-11-19 Ingo Feinerer <h0125130@wu-wien.ac.at>
506 :    
507 : feinerer 22 * R/textdoccol.R: Constructor of textdoccol allows import of CSV
508 :     files. See the questionnaire data/Umfrage.csv for such an example.
509 : feinerer 23 We are now able to import files in Reuters-21578 XML format.
510 : feinerer 22
511 : feinerer 21 * Changed class interfaces in various files. Weighting of the text
512 :     matrix is now possible.
513 :    
514 : feinerer 20 2005-11-08 Ingo Feinerer <h0125130@wu-wien.ac.at>
515 :    
516 :     * R/textdoccol.R: One can build term-document matrices if
517 :     nessecary (with buildTDM(...)) and fill the field tdm from a text
518 :     document collection with it.
519 :    
520 :     * R/textmatrix.R: Wrote S4 class for term-document matrices.
521 :    
522 : feinerer 19 2005-11-06 Ingo Feinerer <h0125130@wu-wien.ac.at>
523 :    
524 :     * R/textdoccol.R: We now can read in a whole XML file with several
525 :     news items.
526 :    
527 : feinerer 17 2005-11-05 Ingo Feinerer <h0125130@wu-wien.ac.at>
528 :    
529 :     * R/textdoccol.R: Set up an S4 class for a collection of text
530 :     documents. A first attempt to read in XML input (like the RCV1
531 :     set) was made.
532 :    
533 :     * R/textdocument.R: Set up an S4 class for text documents. Wrote
534 :     some accessor functions.
535 :    
536 :     * data/newsitem.xml: Added this XML file for testing purposes. It
537 :     contains a single news item from the Reuters Corpus Volume 1
538 :     (RCV1) XML set.
539 :    
540 : feinerer 16 2005-10-07 Ingo Feinerer <h0125130@wu-wien.ac.at>
541 :    
542 :     * R/textmatrix.R (textmatrix): Removed the transpose of the original
543 :     textmatrix as k-means clustering provided by R (kmeans) now works on
544 :     this textmatrix. The result is a k-means text clustering with a
545 :     similarity measure based upon word frequences.
546 :    
547 :     2005-10-05 Ingo Feinerer <h0125130@wu-wien.ac.at>
548 :    
549 :     * R/textmatrix.R: Adapted the preprocessing code from the R
550 :     package "lsa" written by Fridolin Wild to build a document text matrix.
551 :    
552 :     2005-10-02 Ingo Feinerer <h0125130@wu-wien.ac.at>
553 :    
554 :     * Set up the R Text Mining Package infrastructure.

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