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Revision 1062 - (view) (download)

1 : feinerer 1062 2010-04-07 Ingo Feinerer <feinerer@logic.at>
2 :    
3 :     * R/meta.R (`content_or_meta`): Utility function.
4 :    
5 : feinerer 1061 2010-03-19 Ingo Feinerer <feinerer@logic.at>
6 :    
7 :     * R/reader.R (readReut21578XML, readReut21578XMLasPlain): Extract
8 :     TOPICS, LEWISSPLIT, CGISPLIT, and OLDID meta tags.
9 :    
10 : feinerer 1048 2010-03-03 Ingo Feinerer <feinerer@logic.at>
11 :    
12 : feinerer 1051 * R/weight.R (weightTfIdf): Added normalization option.
13 :    
14 : feinerer 1048 * man/tm_tag_score.Rd: Add General Inquirer example for sentiment
15 :     analysis.
16 :    
17 : feinerer 1046 2010-02-25 Ingo Feinerer <feinerer@logic.at>
18 :    
19 :     * R/score.R (tm_tag_score): Compute a score from the number of
20 :     tags matching in a document.
21 :    
22 : feinerer 1041 2010-02-18 Ingo Feinerer <feinerer@logic.at>
23 :    
24 :     * R/complete.R (stemCompletion): New completion heuristics.
25 :    
26 :     2010-02-17 Ingo Feinerer <feinerer@logic.at>
27 :    
28 :     * R/plot.R (plot.TermDocumentMatrix): Memory improvements.
29 :    
30 : feinerer 1040 2010-02-06 Ingo Feinerer <feinerer@logic.at>
31 :    
32 :     * DESCRIPTION (Depends): Depend on R (>= 2.10.0) to ensure that
33 :     setOldClass(c(..., "list")) works.
34 :    
35 : feinerer 1039 2010-01-22 Ingo Feinerer <feinerer@logic.at>
36 :    
37 :     * R/transform.R (stemDocument.character): In case input is a
38 :     simple character just delegate to the default Snowball stemmer.
39 :    
40 : feinerer 1038 2010-01-15 Ingo Feinerer <feinerer@logic.at>
41 :    
42 :     * R/reader.R (readReut21578XML, readRCV1): Extract more meta
43 :     data.
44 :    
45 : feinerer 1034 2010-01-12 Ingo Feinerer <feinerer@logic.at>
46 :    
47 :     * R/doc.R (`Content<-`): Be careful with names attribute.
48 :    
49 : stefan7th 1032 2010-01-07 Stefan Theussl <stefan.theussl@wu.ac.at>
50 :    
51 :     * R/source.R (DirSource): Improved implementation especially when
52 : feinerer 1042 handling many (> 1M) files.
53 : stefan7th 1032
54 : feinerer 1029 2009-12-22 Ingo Feinerer <feinerer@logic.at>
55 :    
56 :     * R/source.R (getElem.URISource): Use encoding argument.
57 :    
58 : feinerer 1025 2009-12-11 Ingo Feinerer <feinerer@logic.at>
59 :    
60 :     * R/doc.R (setOldClass): Register S3 document classes to be
61 :     recognized by S4 methods.
62 :    
63 : feinerer 1023 2009-11-25 Ingo Feinerer <feinerer@logic.at>
64 :    
65 :     * R/matrix.R (termFreq): Add option to remove punctuation
66 :     characters.
67 :    
68 : feinerer 1022 2009-11-19 Ingo Feinerer <feinerer@logic.at>
69 :    
70 :     * R/matrix.R (c.TermDocumentMatrix): Added combine method for
71 :     merging multiple term-document matrices.
72 :    
73 : feinerer 1020 2009-11-17 Ingo Feinerer <feinerer@logic.at>
74 :    
75 : feinerer 1021 * R/corpus.R (setOldClass): Register S3 corpus classes to be
76 :     recognized by S4 methods.
77 :    
78 : feinerer 1020 * man/plot.Rd: Use \dontrun{} in \examples{} section in the hope
79 :     that CRAN Mac OS X builds do not fail any longer.
80 :    
81 : feinerer 1019 2009-11-15 Ingo Feinerer <feinerer@logic.at>
82 :    
83 :     * R/matrix.R (tokenize): Use scan(..., what = "character") instead
84 :     of RWeka:AlphabeticTokenizer() as default.
85 :    
86 : feinerer 1018 2009-11-14 Ingo Feinerer <feinerer@logic.at>
87 :    
88 :     * R/transform.R (removeWords.PlainTextDocument): Fix bug which
89 :     caused words at the beginning or the end of a line not to be removed. Do
90 :     not delete whitespace anymore.
91 :    
92 : feinerer 1017 2009-11-12 Ingo Feinerer <feinerer@logic.at>
93 :    
94 :     * R/source.R (DirSource): Default to working directory if no path
95 :     is specified.
96 :    
97 :     2009-11-11 Ingo Feinerer <feinerer@logic.at>
98 :    
99 :     * R/source.R (DirSource): Stop on empty directories.
100 :    
101 : feinerer 1015 2009-11-07 Ingo Feinerer <feinerer@logic.at>
102 :    
103 :     * R/matrix.R (TermDocumentMatrix): Avoid prefixes originating from
104 :     named documents.
105 :    
106 : feinerer 1013 2009-10-21 Ingo Feinerer <feinerer@logic.at>
107 :    
108 :     * R/transform.R (removeWords): Improve regular expressions.
109 :    
110 : feinerer 1011 2009-10-19 Ingo Feinerer <feinerer@logic.at>
111 :    
112 :     * R/meta.R (DublinCore): Allow lower case tags.
113 :    
114 : feinerer 1010 2009-10-09 Ingo Feinerer <feinerer@logic.at>
115 :    
116 :     * R/source.R (GmaneSource, ReutersSource): Use xmlChildren(x)
117 :     instead of x$children.
118 :    
119 : feinerer 1007 2009-09-15 Ingo Feinerer <feinerer@logic.at>
120 :    
121 :     * R/preprocess.R (preprocessReut21578XML): Fix generated file names.
122 :    
123 : feinerer 993 2009-09-06 Ingo Feinerer <feinerer@logic.at>
124 :    
125 :     * R/: Use S3 instead of S4 class system.
126 :    
127 : feinerer 982 2009-08-11 Ingo Feinerer <feinerer@logic.at>
128 :    
129 :     * R/reader.R (readMail): Moved to tm.plugin.mail package.
130 :    
131 : feinerer 973 2009-07-04 Ingo Feinerer <feinerer@logic.at>
132 :    
133 :     * R/reader.R (readNewsgroup): Rename to readMail as newsgroup
134 :     postings are basically e-mails with some extra headers.
135 :    
136 : feinerer 972 2009-07-03 Ingo Feinerer <feinerer@logic.at>
137 :    
138 : feinerer 981 * R/transform.R: Move convertMboxEml, removeCitation,
139 :     removeMultipart, and removeSignature to the tm.plugin.mail package
140 :     since they are mainly utility functions (for handling e-mails) and
141 :     not very framework specific.
142 : feinerer 972
143 : feinerer 962 2009-06-28 Ingo Feinerer <feinerer@logic.at>
144 :    
145 :     * man/: Fix documentation.
146 :    
147 : feinerer 960 2009-06-26 Ingo Feinerer <feinerer@logic.at>
148 :    
149 :     * R/reader.R (readReut21578XMLasPlain): New reader which returns a
150 :     plain text document instead of an XML document for texts of the
151 :     Reuters-21578 dataset.
152 :    
153 :     * R/sparse.R: Removed since the slam package is now available on
154 :     CRAN.
155 :    
156 :     * DESCRIPTION (Depends): Add slam package.
157 :    
158 : feinerer 959 2009-06-17 Ingo Feinerer <feinerer@logic.at>
159 :    
160 :     * R/transform.R (stemDoc): Fix character(0) handling.
161 :    
162 : feinerer 957 2009-06-12 Ingo Feinerer <feinerer@logic.at>
163 :    
164 :     * R/doc.R (show): Pretty print.
165 :    
166 : feinerer 954 2009-05-27 Ingo Feinerer <feinerer@logic.at>
167 :    
168 :     * R/matrix.R (print.TermDocumentMatrix): Handle empty matrices
169 :     gracefully.
170 :    
171 : feinerer 946 2009-05-13 Ingo Feinerer <feinerer@logic.at>
172 :    
173 :     * R/corpus.R: Make corpus virtual. Implement corpus with standard
174 :     and permanent storage semantics.
175 :    
176 :     * DESCRIPTION: New major release. A *lot* of improvements.
177 :    
178 : feinerer 945 2009-05-04 Ingo Feinerer <feinerer@logic.at>
179 :    
180 :     * NAMESPACE: Export some simple_triplet_matrix functions.
181 :    
182 : feinerer 942 2009-04-28 Ingo Feinerer <feinerer@logic.at>
183 :    
184 :     * R/weight.R: Adapt tf-idf to new matrix format.
185 :    
186 : feinerer 941 2009-04-27 Ingo Feinerer <feinerer@logic.at>
187 :    
188 :     * R/matrix.R: Create two distinct classes for term-document and
189 :     document-term matrices.
190 :    
191 : feinerer 938 2009-04-26 Ingo Feinerer <feinerer@logic.at>
192 :    
193 : feinerer 939 * R/termdocmatrix.R: No longer use Matrix package. This reduces
194 :     package start-up time significantly.
195 : feinerer 938
196 : feinerer 930 2009-04-11 Ingo Feinerer <feinerer@logic.at>
197 :    
198 :     * inst/doc/tm.Rnw: Fix code/documentation mismatch.
199 :    
200 : feinerer 926 2009-04-04 Ingo Feinerer <feinerer@logic.at>
201 :    
202 :     * R/transform.R (tmReduce): Combine multiple maps into one
203 :     transformation.
204 :    
205 : feinerer 923 2009-04-03 Ingo Feinerer <feinerer@logic.at>
206 :    
207 : feinerer 924 * R/weight.R: Remove weightLogical since it does not return a
208 :     dgCMatrix.
209 :    
210 : feinerer 925 * R/termdocmatrix.R: Removed TermDocMatrix. Use DocumentTermMatrix
211 :     or TermDocumentMatrix instead.
212 : feinerer 923
213 : feinerer 919 2009-03-28 Ingo Feinerer <feinerer@logic.at>
214 :    
215 :     * inst/doc/extensions.Rnw: Finished vignette.
216 :    
217 : feinerer 918 2009-03-27 Ingo Feinerer <feinerer@logic.at>
218 :    
219 :     * R/termdocmatrix.R: Start to work on new TermDocumentMatrix and
220 :     DocumentTermMatrix representations.
221 :    
222 : feinerer 912 2009-03-23 Ingo Feinerer <feinerer@logic.at>
223 :    
224 :     * R/reader.R (readXML): New reader for arbitrary XML files.
225 :    
226 : feinerer 909 2009-03-22 Ingo Feinerer <feinerer@logic.at>
227 :    
228 : feinerer 910 * R/source.R (CSVSource): Defunct (use DataframeSource instead).
229 : feinerer 911 (XMLSource): New XMLSource class for arbitrary XML files.
230 :     (Source): New slot Vectorized.
231 : feinerer 910
232 : feinerer 904 2009-03-21 Ingo Feinerer <feinerer@logic.at>
233 :    
234 : feinerer 939 * R/reader.R (readTabular): Experimental reader for tabular data
235 :     structures which can be customized via user-defined mappings.
236 : feinerer 908
237 : feinerer 905 * R/reader.R: Always use UTC time zone.
238 :    
239 : feinerer 904 * R/AAA.R (.onLoad): No longer try to start a MPI cluster.
240 :    
241 : feinerer 903 2009-03-20 Ingo Feinerer <feinerer@logic.at>
242 :    
243 :     * R/reader.R (readDOC): Options can be passed over to antiword.
244 :    
245 :     * R/reader.R (readPDF): Options can be passed over to pdfinfo and
246 :     pdftotext.
247 :    
248 : feinerer 895 2009-03-10 Ingo Feinerer <feinerer@logic.at>
249 :    
250 :     * R/source.R (DirSource): Add pattern and ignore.case arguments
251 :     which are internally passed over to list.files().
252 :    
253 : feinerer 893 2009-03-02 Ingo Feinerer <feinerer@logic.at>
254 :    
255 :     * inst/doc/tm.Rnw: Suppress pointless loading message.
256 :    
257 : feinerer 886 2009-01-29 Ingo Feinerer <feinerer@logic.at>
258 :    
259 :     * DESCRIPTION: Speed up package loading (via moving packages not
260 :     strictly necessary for normal operation to Suggests instead of
261 :     Depends).
262 :    
263 : feinerer 882 2009-01-08 Ingo Feinerer <feinerer@logic.at>
264 :    
265 :     * R/reader.R (readNewsgroup): The date format is now configurable.
266 :    
267 : feinerer 881 2008-12-20 Ingo Feinerer <feinerer@logic.at>
268 :    
269 :     * R/preprocess.R (convertMboxEml): Fix off-by-one error.
270 :    
271 : feinerer 877 2008-12-16 Ingo Feinerer <feinerer@logic.at>
272 :    
273 :     * R/termdocmatrix.R (TermDocMatrix): Sort row indices.
274 :    
275 : feinerer 875 2008-12-06 Ingo Feinerer <feinerer@logic.at>
276 :    
277 : feinerer 876 * R/source.R (DataframeSource): New source class for data frames.
278 :    
279 : feinerer 875 * R/source.R: Fixed non-standard call evaluation.
280 :    
281 : feinerer 874 2008-11-29 Ingo Feinerer <feinerer@logic.at>
282 :    
283 :     * R/source.R (URISource): New source class for a single document.
284 :    
285 : feinerer 873 2008-11-27 Ingo Feinerer <feinerer@logic.at>
286 :    
287 :     * R/source.R: Refactoring.
288 :    
289 : feinerer 872 2008-11-25 Ingo Feinerer <feinerer@logic.at>
290 :    
291 :     * R/AAA.R (.onLoad, .Last): Use tryCatch() to handle misconfigured
292 :     Rmpi installations more gracefully.
293 :    
294 : feinerer 869 2008-11-08 Ingo Feinerer <feinerer@logic.at>
295 :    
296 :     * R/source.R (Source): Add Length slot.
297 :    
298 :     2008-11-06 Ingo Feinerer <feinerer@logic.at>
299 :    
300 :     * R/AAA.R: Unify duplicated .onLoad function.
301 :    
302 : feinerer 868 2008-11-03 Ingo Feinerer <feinerer@logic.at>
303 :    
304 :     * DESCRIPTION (Suggests): Added Rmpi.
305 :    
306 : feinerer 866 2008-11-02 Ingo Feinerer <feinerer@logic.at>
307 :    
308 :     * R/source.R (getElem): Fix 'no visible binding' warning.
309 :    
310 :     * man/WeightFunction.Rd: Fix signature.
311 :    
312 : feinerer 865 2008-08-03 Ingo Feinerer <feinerer@logic.at>
313 :    
314 :     * R/weight.R: Introduce name abbreviations for weighting functions.
315 :    
316 : feinerer 861 2008-07-24 Ingo Feinerer <feinerer@logic.at>
317 :    
318 :     * R/AAA.R (.onLoad, .Last): Start and stop MPI cluster.
319 :    
320 :     * R/cluster.R: Provide convenience functions for using a MPI
321 :     cluster.
322 :    
323 :     * R/termdocmatrix.R (TermDocMatrix): Use MPI cluster if
324 :     available.
325 :    
326 :     * R/textdoccol.R (tmIndex, tmFilter, tmMap): Use MPI cluster if
327 :     available.
328 :    
329 : feinerer 860 2008-07-17 Ingo Feinerer <feinerer@logic.at>
330 :    
331 :     * R/textdoccol.R (lapply): Removed debug print out.
332 :    
333 : feinerer 856 2008-06-06 Ingo Feinerer <h0125130@wu-wien.ac.at>
334 :    
335 :     * R/reader.R (readRCV1): Improved meta data extraction from
336 :     Reuters Corpus Volume 1 documents.
337 :    
338 : feinerer 855 2008-05-25 Ingo Feinerer <h0125130@wu-wien.ac.at>
339 :    
340 :     * R/transform.R: Ensure that all mappings preserve multiline
341 :     structures.
342 :    
343 : feinerer 854 2008-05-24 Ingo Feinerer <h0125130@wu-wien.ac.at>
344 :    
345 :     * R/filter.R: Every filter has now an attribute indicating whether
346 :     it sould be applied to document level (doclevel).
347 :    
348 :     * R/textdoccol.R (tmFilter): Set searchFullText as new default
349 :     filter.
350 :    
351 : feinerer 838 2008-04-23 Ingo Feinerer <h0125130@wu-wien.ac.at>
352 :    
353 :     * R/transform.R (replacePatterns): Replaced removeWords by
354 :     replacePatterns. Suggested by Christian Buchta.
355 :    
356 :     * R/textdoccol.R (inspect): Improved formatting.
357 :    
358 : feinerer 836 2008-04-19 Ingo Feinerer <h0125130@wu-wien.ac.at>
359 :    
360 :     * inst/CITATION: Updated JSS article information.
361 :    
362 :     * R/textdoccol.R (setAs): Added coerce method from list to
363 :     corpus.
364 :    
365 :     * R/meta.R (meta): Improved meta data handling.
366 :    
367 : feinerer 833 2008-03-21 Ingo Feinerer <h0125130@wu-wien.ac.at>
368 :    
369 :     * R/textdoccol.R (materialize, tmMap): Improvements suggested by
370 :     Christian Buchta.
371 :    
372 :     * inst/CITATION: Added template to include JSS article reference.
373 :    
374 : feinerer 831 2008-03-12 Ingo Feinerer <h0125130@wu-wien.ac.at>
375 :    
376 :     * R/textdoccol.R (tmMap): Introduced lazy mapping.
377 :    
378 : feinerer 832 * R/source.R: Added VectorSource.
379 :    
380 : feinerer 825 2008-02-23 Ingo Feinerer <h0125130@wu-wien.ac.at>
381 :    
382 :     * man/: Language codes should be in ISO 639-1 format.
383 :    
384 : feinerer 826 * R/textdoccol.R (asPlain): Preserve local meta data.
385 :    
386 : feinerer 819 2008-01-31 Ingo Feinerer <h0125130@wu-wien.ac.at>
387 :    
388 :     * R/textdoccol.R (writeCorpus): Function for writing a corpus
389 :     containing plain text documents to disk.
390 :    
391 : feinerer 817 2008-01-30 Ingo Feinerer <h0125130@wu-wien.ac.at>
392 :    
393 :     * R/termdocmatrix.R (TermDocMatrix): Ensure that dimnames are
394 :     always set correctly.
395 :    
396 :     * R/textdoccol.R: Set load = TRUE as default for load on demand
397 :     since in most cases this is the wanted behaviour.
398 :    
399 : feinerer 816 2008-01-24 Ingo Feinerer <h0125130@wu-wien.ac.at>
400 :    
401 :     * R/: Renamed TextDocCol to Corpus, and Corpus to Content.
402 :    
403 :     * DESCRIPTION: Updated Version to 0.3 due to core name changes.
404 :    
405 : feinerer 813 2008-01-22 Ingo Feinerer <h0125130@wu-wien.ac.at>
406 :    
407 :     * R/meta.R (meta): New function for consistent access to meta data
408 :     of document collections, repositories, and texts.
409 :    
410 : feinerer 810 2008-01-21 Ingo Feinerer <h0125130@wu-wien.ac.at>
411 :    
412 :     * R/: Better support for encodings.
413 :    
414 : feinerer 808 2008-01-13 Ingo Feinerer <h0125130@wu-wien.ac.at>
415 :    
416 :     * R/textdoccol.R (TextDocCol): Fixed bug regarding default reader
417 :     selection when no reader argument is given.
418 :    
419 : feinerer 807 2008-01-05 Ingo Feinerer <h0125130@wu-wien.ac.at>
420 :    
421 :     * R/source.R (CSVSource): Now uses read.csv instead of scan
422 :     internally.
423 :    
424 : feinerer 806 2008-01-02 Ingo Feinerer <h0125130@wu-wien.ac.at>
425 :    
426 :     * R/reader.R (getReaders): Returns available reader functions.
427 :    
428 :     * R/termdocmatrix.R (TermDocMatrix): Set new modular constructor
429 :     as default.
430 :    
431 : feinerer 802 2007-12-02 Ingo Feinerer <h0125130@wu-wien.ac.at>
432 :    
433 :     * R/stopwords.R (stopwords): Shortened code, removed codetools
434 :     variable warnings.
435 :    
436 :     * man/: Documentation for showMeta, added an example for tmMap.
437 :    
438 :     * inst/doc/tm.Rnw: Updated vignette, comments on MS word reader,
439 :     some minor typos fixed.
440 :    
441 : feinerer 801 2007-12-01 Ingo Feinerer <h0125130@wu-wien.ac.at>
442 :    
443 :     * R/aobjects.R (showMeta): Added method for pretty printing a
444 :     text document's meta data.
445 :    
446 : feinerer 799 2007-11-29 Ingo Feinerer <h0125130@wu-wien.ac.at>
447 :    
448 :     * R/textdoccol.R (TextDocCol): Better handling of empty
449 :     arguments.
450 :    
451 :     * NAMESPACE: Exported readDOC.
452 :    
453 : feinerer 800 * man/completeStems.Rd: Added an example.
454 :    
455 : feinerer 797 2007-11-18 Ingo Feinerer <h0125130@wu-wien.ac.at>
456 : feinerer 796
457 : feinerer 797 * R/stopwords.R (stopwords): Look up .dat files at every
458 :     call. Allows users to modify stopword .dat files interactively.
459 :    
460 :     2007-11-06 Ingo Feinerer <h0125130@wu-wien.ac.at>
461 :    
462 : feinerer 796 * R/termdocmatrix.R (termFreq): Correct processing of empty
463 :     documents.
464 :    
465 : feinerer 795 2007-10-27 Ingo Feinerer <h0125130@wu-wien.ac.at>
466 :    
467 :     * man/: Updated documentation.
468 :    
469 : feinerer 790 2007-10-21 Ingo Feinerer <h0125130@wu-wien.ac.at>
470 :    
471 : feinerer 793 * R/complete.R (completeStems): Completes (heuristically) word
472 :     stems.
473 :    
474 : feinerer 790 * R/termdocmatrix.R (TermDocMatrix2): New modular
475 :     constructor.
476 :    
477 :     * NAMESPACE: Exported termFreq.
478 :    
479 : feinerer 789 2007-10-16 Ingo Feinerer <h0125130@wu-wien.ac.at>
480 :    
481 :     * R/reader.R (readDOC): Added MS Word reader (using antiword).
482 :    
483 : feinerer 788 2007-10-14 Ingo Feinerer <h0125130@wu-wien.ac.at>
484 :    
485 :     * R/weight.R: Weighting functions for TermDocMatrix.
486 :    
487 : feinerer 785 2007-10-13 Ingo Feinerer <h0125130@wu-wien.ac.at>
488 :    
489 :     * R/termdocmatrix.R (dimnames, colnames, rownames): Wrapper
490 :     functions for accessing dimension, column, and row names.
491 :    
492 :     * R/plot.R (plot.TermDocMatrix): Plot correlations between terms.
493 :    
494 : feinerer 779 2007-09-11 Ingo Feinerer <h0125130@wu-wien.ac.at>
495 :    
496 :     * man/removePunctuation.Rd: Added documentation. Function also exported to NAMESPACE.
497 :    
498 : feinerer 777 2007-08-28 Ingo Feinerer <h0125130@wu-wien.ac.at>
499 :    
500 :     * R/fungen.R: Use S4 class for function generators instead of S3 attributes.
501 :    
502 : feinerer 776 2007-07-29 Ingo Feinerer <h0125130@wu-wien.ac.at>
503 :    
504 :     * R/reader.R (readPDF): Removed manual checks for pdftotext and
505 :     pdfinfo. The system call gives a warning anyway.
506 :    
507 : feinerer 775 2007-07-28 Ingo Feinerer <h0125130@wu-wien.ac.at>
508 :    
509 :     * R/textdoccol.R (asPlain): Conversion from
510 :     StructuredTextDocuments to PlainTextDocuments.
511 :    
512 : feinerer 773 2007-07-21 Ingo Feinerer <h0125130@wu-wien.ac.at>
513 :    
514 : feinerer 774 * R/termdocmatrix.R: Added convenience methods ("[", nrow, ncol)
515 :     for accessing term-document matrices.
516 :    
517 : feinerer 773 * inst/doc/tm.Rnw: readPDF is only called if pdftotext and pdfinfo
518 :     are installed.
519 :    
520 : feinerer 770 2007-07-17 Ingo Feinerer <h0125130@wu-wien.ac.at>
521 :    
522 :     * R/termdocmatrix.R (TermDocMatrix): Improved efficiency. Kudos to
523 :     Christian Buchta.
524 :    
525 : feinerer 768 2007-07-15 Ingo Feinerer <h0125130@wu-wien.ac.at>
526 :    
527 :     * inst/doc/tm.Rnw: Update vignette (readPDF, readHTML, preprocessReut21578XML).
528 :    
529 : feinerer 766 2007-07-14 Ingo Feinerer <h0125130@wu-wien.ac.at>
530 :    
531 : feinerer 767 * R/reader.R (readHTML): Added very simple HTML reader to obtain StructuredTextDocuments.
532 :    
533 : feinerer 766 * R/reader.R (readPDF): Added PDF reader.
534 :    
535 : feinerer 765 2007-07-13 Ingo Feinerer <h0125130@wu-wien.ac.at>
536 :    
537 :     * DESCRIPTION: Moved proxy from Depends to Imports to avoid name clashes.
538 :    
539 :     * inst/stopwords/english.dat: Added the term "yes" to stopwords.
540 :    
541 :     * R/termdocmatrix.R (dim): dim function for TermDocMatrix.
542 :    
543 :     * R/preprocess.R (convertMboxEml): Accepts gzipped mboxes.
544 :    
545 : feinerer 763 2007-07-11 Ingo Feinerer <h0125130@wu-wien.ac.at>
546 :    
547 :     * R/distmeasure.R (dissimilarity): Replaced dists call from
548 :     package cba by new dist call from package proxy.
549 :    
550 : feinerer 761 2007-07-10 Ingo Feinerer <h0125130@wu-wien.ac.at>
551 :    
552 :     * inst/doc/tm.Rnw: Described removeSparseTerms and Dictionary.
553 :    
554 : feinerer 760 2007-06-21 Ingo Feinerer <h0125130@wu-wien.ac.at>
555 :    
556 :     * R/termdocmatrix.R: require() uses the quietly option to suppress
557 :     loading messages.
558 :    
559 : feinerer 758 2007-06-12 Ingo Feinerer <h0125130@wu-wien.ac.at>
560 :    
561 :     * R/dictionary.R: Added dictionary support.
562 :    
563 : feinerer 757 2007-06-07 Ingo Feinerer <h0125130@wu-wien.ac.at>
564 :    
565 :     * R/aobjects.R: Added classes for Reuters21578 XML and RCV1
566 :     documents. This simplifies some functions, e.g., asPlain.
567 :    
568 : feinerer 756 2007-06-06 Ingo Feinerer <h0125130@wu-wien.ac.at>
569 :    
570 :     * inst/doc/tm.Rnw: Fixed some typos in vignette.
571 :    
572 : feinerer 755 2007-06-03 Ingo Feinerer <h0125130@wu-wien.ac.at>
573 :    
574 :     * R/textdoccol.R (replaceWords): Added method to replace a set of
575 :     words by a single word. Useful for synonyms.
576 :    
577 : feinerer 754 2007-05-22 Ingo Feinerer <h0125130@wu-wien.ac.at>
578 :    
579 :     * man/TermDocMatrix.Rd: Fixed documentation on Data slot.
580 :    
581 : feinerer 752 2007-05-19 Ingo Feinerer <h0125130@wu-wien.ac.at>
582 :    
583 :     * R/termdocmatrix.R (textvector): Small fix for dealing with empty
584 :     vectors. Thanks to Ariel Maguyon for his error report.
585 :     (removeSparseTerms): New function to remove columns from a
586 :     term-document matrix exceeding a sparse factor.
587 :    
588 : feinerer 751 2007-05-15 Ingo Feinerer <h0125130@wu-wien.ac.at>
589 :    
590 :     * man/tmUpdate.Rd: Corrected documentation on readerControl parameter.
591 :    
592 : feinerer 750 2007-05-11 Ingo Feinerer <h0125130@wu-wien.ac.at>
593 :    
594 :     * man/sFilter.Rd: Corrected documentation on statement format (use
595 :     '==' instead of '=').
596 :    
597 : feinerer 749 2007-05-08 Ingo Feinerer <h0125130@wu-wien.ac.at>
598 :    
599 :     * R/aobjects.R (StructuredTextDocument): Inherits from
600 :     TextDocument.
601 :    
602 : feinerer 748 2007-05-04 Ingo Feinerer <h0125130@wu-wien.ac.at>
603 :    
604 :     * R/termdocmatrix.R (findFreqTerms): Perform efficient computation
605 :     on sparse matrices as proposed by Martin Maechler.
606 :    
607 : feinerer 747 2007-04-27 Ingo Feinerer <h0125130@wu-wien.ac.at>
608 :    
609 :     * R/textdoccol.R: Removed \code{dbDisconnect} calls since last
610 :     \pkg{filehash} version makes them deprecated.
611 :    
612 : feinerer 744 2007-04-22 Ingo Feinerer <h0125130@wu-wien.ac.at>
613 :    
614 :     * R/termdocmatrix.R (textvector): Stemming is now performed before
615 :     erasing stopwords.
616 :     (weightMatrix): Adapted to handle sparse matrices.
617 :     (TermDocMatrix): Sparse matrix is now efficiently built by
618 :     direct stepwise insertion of row values into it.
619 :    
620 : feinerer 741 2007-04-21 Ingo Feinerer <h0125130@wu-wien.ac.at>
621 :    
622 :     * DESCRIPTION: Replaced \pkg{filehashSQLite} with \pkg{filehash}
623 :     due to ongoing problems. For our purposes the latter is as useful
624 :     as the replaced package.
625 :    
626 : feinerer 738 2007-04-20 Ingo Feinerer <h0125130@wu-wien.ac.at>
627 :    
628 :     * man/TextDocCol.Rd: Replaced \code{readPlain} with \code{object@DefaultReader}.
629 :    
630 :     * man/TermDocMatrix.Rd: Remove deprecated \code{language} argument.
631 :    
632 : feinerer 737 2007-04-15 Ingo Feinerer <h0125130@wu-wien.ac.at>
633 :    
634 :     * R/resolve.R (resolveISOCode): Added ISO 639-1 codes for
635 :     languages with available stopwords.
636 :    
637 : feinerer 736 2007-04-14 Ingo Feinerer <h0125130@wu-wien.ac.at>
638 :    
639 :     * inst/doc/tm.Rnw: Minor corrections in the vignette.
640 :    
641 : feinerer 731 2007-04-11 Ingo Feinerer <h0125130@wu-wien.ac.at>
642 :    
643 : feinerer 732 * DESCRIPTION: Update to version 0.2, since a lot of new features
644 :     have been integrated.
645 : feinerer 731
646 : feinerer 732 * inst/stopwords: Updated existing stopwords and added stopwords
647 :     for various other languages.
648 :    
649 : feinerer 729 2007-04-10 Ingo Feinerer <h0125130@wu-wien.ac.at>
650 :    
651 : feinerer 730 * man/: Updated documentation.
652 :    
653 : feinerer 729 * Work/testDb.R: Script to test database stuff.
654 :    
655 :     * R/: Fixed various database related bugs. Seems to be rather
656 :     useable now, i.e., consider as alpha status for now.
657 :    
658 : feinerer 727 2007-04-08 Ingo Feinerer <h0125130@wu-wien.ac.at>
659 :    
660 :     * R/: Fixed some bugs related to database support.
661 :    
662 : feinerer 726 2007-04-07 Ingo Feinerer <h0125130@wu-wien.ac.at>
663 :    
664 :     * man/: Added a lot of examples to the manuals.
665 :    
666 : feinerer 725 2007-04-05 Ingo Feinerer <h0125130@wu-wien.ac.at>
667 :    
668 :     * man/: Updated parts of the documentation.
669 :    
670 :     * R/textdoccol.R (asPlain): Added conversion from newsgroup
671 :     documents to plain text documents.
672 :    
673 : feinerer 722 2007-04-01 Ingo Feinerer <h0125130@wu-wien.ac.at>
674 :    
675 : feinerer 724 * R/textdoccol.R: Finished experimental database support. Not yet
676 :     intensively tested.
677 :    
678 : feinerer 723 * R/source.R: Now each source has a default reader.
679 :    
680 : feinerer 722 * R/reader.R: \code{FunctionGenerator} is now an attribute, not a
681 :     class anymore.
682 :    
683 :     * R/plaintextdoc.R: Custom show method for plain text documents.
684 :    
685 :     * R/aobjects.R: Added a class for structured text documents.
686 :    
687 :     * R/reader.R: Replaced remaining \code{parser} occurrences with
688 :     \code{reader}.
689 :    
690 :     * R/textdoccol.R (summary): Indent tags.
691 :    
692 : feinerer 725 * R/textdoccol.R (removePunctuation): Transform method to remove
693 : feinerer 722 punctuation marks.
694 :    
695 : feinerer 721 2007-03-21 Ingo Feinerer <h0125130@wu-wien.ac.at>
696 :    
697 :     * R/textdoccol.R (sFilter): Simplified sFilter significantly by
698 :     using prescindMeta().
699 :    
700 : feinerer 719 2007-03-18 Ingo Feinerer <h0125130@wu-wien.ac.at>
701 :    
702 :     * R/textdoccol.R: Improved database support.
703 :    
704 : feinerer 717 2007-03-16 Ingo Feinerer <h0125130@wu-wien.ac.at>
705 :    
706 : feinerer 718 * R/termdocmatrix.R (TermDocMatrix): Uses sparse matrices.
707 :    
708 : feinerer 717 * R/resolve.R (resolveISOcode): Extracts the language from a ISO
709 :     language code.
710 :    
711 :     * R/textdoccol.R (TextDocCol): Refactored several parser arguments
712 :     into parserControl argument.
713 :    
714 :     * R/aobjects.R (TextDocument): Introduced the "Language" slot.
715 :    
716 : feinerer 713 2007-03-14 Ingo Feinerer <h0125130@wu-wien.ac.at>
717 :    
718 : feinerer 715 * Work/tmDataSetup.R: The datasets acq and crude can now be
719 :     created on the fly.
720 :    
721 : feinerer 713 * R/stopwords.R: Introduced a function returning the stopwords for
722 :     a given language (English, German and French at the moment)
723 :    
724 :     * R/textdoccol.R (stemDoc): Stemming uses Rstem if available,
725 :     otherwise falls back to Snowball package.
726 :    
727 : feinerer 711 2007-01-30 Ingo Feinerer <h0125130@wu-wien.ac.at>
728 :    
729 :     * man/dissimilarity-methods.Rd: Make clear that any method offered
730 :     by "dists" from package "cba" can be used.
731 :    
732 : feinerer 708 2007-01-22 Ingo Feinerer <h0125130@wu-wien.ac.at>
733 :    
734 : feinerer 710 * inst/doc/tm.Rnw: Fixed quotes-appearing-as-boxes-bug according
735 :     to Kurt's latex suggestion. Removed points and underscores in
736 :     variable names for consistent naming.
737 :    
738 : feinerer 708 * DESCRIPTION: Update to version 0.1-2.
739 :    
740 :     * man/TextRepository.Rd: Fixed bug in documentation.
741 :    
742 : feinerer 704 2007-01-12 Ingo Feinerer <h0125130@wu-wien.ac.at>
743 :    
744 :     * DESCRIPTION: Update to version 0.1-1.
745 :    
746 : feinerer 702 2007-01-09 Ingo Feinerer <h0125130@wu-wien.ac.at>
747 :    
748 :     * R/textdoccol.R (stemDoc): Use Rstem::wordStem instead of
749 :     wordStem.
750 :    
751 : feinerer 698 2007-01-06 Ingo Feinerer <h0125130@wu-wien.ac.at>
752 :    
753 :     * R/: Changes due to Kurt's review.
754 :    
755 : feinerer 694 2006-12-31 Ingo Feinerer <h0125130@wu-wien.ac.at>
756 :    
757 :     * R/: Implemented improvements based upon comments by David
758 :     Meyer.
759 :    
760 : feinerer 691 2006-12-17 Ingo Feinerer <h0125130@wu-wien.ac.at>
761 :    
762 :     * inst/doc/: Rewrote vignette.
763 :    
764 :     * man/: Improved documentation.
765 :    
766 : feinerer 690 2006-12-16 Ingo Feinerer <h0125130@wu-wien.ac.at>
767 :    
768 :     * man/: Updated documentation.
769 :    
770 :     * DESCRIPTION: Changed package name to "tm". Updated version to
771 :     0.1 for first CRAN release.
772 :    
773 :     * inst/texts/gmane.comp.lang.r.general.mbox: mbox Gmane R mailing
774 :     list archive example.
775 :    
776 :     * inst/texts/gmane.comp.lang.r.gr.rdf: RSS Gmane R mailing list
777 :     archive example.
778 :    
779 :     * R/preprocess.R (convert_mbox_eml): A simple e-mail converter
780 :     from (several mails per box) mbox format to (single mail per file)
781 :     eml format.
782 :    
783 : feinerer 689 2006-12-08 Ingo Feinerer <h0125130@wu-wien.ac.at>
784 :    
785 :     * data/crude.rda: Rebuilt.
786 :    
787 :     * data/acq.rda: Rebuilt.
788 :    
789 :     * R/reader.R: Factored out reader and parser methods from
790 :     textdoccol.R.
791 :    
792 :     * R/source.R: Factored out Source methods from aobjects.R and
793 :     textdoccol.R.
794 :     (GmaneRSource): Encapsulates Gmane R mailing list archive RSS
795 :     feeds.
796 :    
797 :     * R/textdoccol.R (DirSource): Added support for recursive
798 :     traversal of directories.
799 :    
800 :     2006-12-07 Ingo Feinerer <h0125130@wu-wien.ac.at>
801 :    
802 :     * R/textdoccol.R ([[): Loads the document corpus automatically
803 :     into memory upon access.
804 :     (tm_transform, tm_filter): Removed several checks whether the
805 :     document is already loaded ([[ ensures this now).
806 :     (gmane_r_reader): Reader for RSS feeds as provided by the Gmane R
807 :     mailing list archive.
808 :    
809 :     2006-12-06 Ingo Feinerer <h0125130@wu-wien.ac.at>
810 :    
811 :     * R/aobjects.R (TextDocument): Is now a virtual class.
812 :     (Source): Is now a virtual class.
813 :    
814 :     2006-12-05 Ingo Feinerer <h0125130@wu-wien.ac.at>
815 :    
816 :     * R/textdoccol.R (c): Support for an arbitrary number of document
817 :     collections.
818 :    
819 : feinerer 77 2006-11-26 Ingo Feinerer <h0125130@wu-wien.ac.at>
820 :    
821 :     * R/textrepo.R: Updated TextRepository (constructor), append_elem,
822 :     append_meta and remove_meta.
823 :    
824 :     * R/textdoccol.R: Removed modify_metadata method.
825 :    
826 :     * R/textrepo.R: Removed modify_metadata method.
827 :    
828 :     * R/textdoccol.R (remove_meta): Supports removal of document
829 :     collection metadata and document (= in data frame) metadata.
830 :    
831 : feinerer 76 2006-11-23 Ingo Feinerer <h0125130@wu-wien.ac.at>
832 :    
833 :     * R/textdoccol.R (append_doc): Bug fix for handling empty metadata.
834 :    
835 :     * data/crude.rda: Rebuilt.
836 :    
837 :     * data/acq.rda: Rebuilt.
838 :    
839 :     * inst/doc/textmin.Rnw: Updated vignette to reflect code changes.
840 :    
841 :     * R/textdoccol.R ([): Bug fix for subsetting a document
842 :     collection's data frame.
843 :    
844 : feinerer 75 2006-11-22 Ingo Feinerer <h0125130@wu-wien.ac.at>
845 :    
846 :     * R/textdoccol.R: Bug fixes in s_filter. Added full query support
847 :     to s_filter.
848 :    
849 :     * R/textdoccol.R: Local text documents' metadata can now be copied
850 :     to a document collection's data frame with prescind_meta.
851 :    
852 : feinerer 73 2006-11-21 Ingo Feinerer <h0125130@wu-wien.ac.at>
853 :    
854 : feinerer 74 * R/: Text documents' slot metadata is now accessible in s_filter.
855 :    
856 : feinerer 73 * R/: Rewrote s_filter function (has still some restrictions).
857 :    
858 : feinerer 72 2006-11-20 Ingo Feinerer <h0125130@wu-wien.ac.at>
859 :    
860 :     * R/: Various fixes in handling metadata.
861 :    
862 :     * R/: Added update mechanism for text document collections.
863 :    
864 : feinerer 71 2006-11-19 Ingo Feinerer <h0125130@wu-wien.ac.at>
865 :    
866 :     * R/: Merging of document collections now creates a binary tree
867 :     for reconstructing merged document collections.
868 :    
869 :     * R/: Redesign of metadata for document collections.
870 :    
871 : feinerer 70 2006-11-07 Ingo Feinerer <h0125130@wu-wien.ac.at>
872 :    
873 :     * R/: Messages now use \code{ngettext}.
874 :    
875 : feinerer 69 2006-11-03 Ingo Feinerer <h0125130@wu-wien.ac.at>
876 :    
877 :     * R/: Added functions for modifying and removing metadata.
878 :    
879 : feinerer 67 2006-11-01 Ingo Feinerer <h0125130@wu-wien.ac.at>
880 :    
881 :     * man/: Updated some documentation.
882 :    
883 :     * R/: Corrected some connection issues.
884 :    
885 :     * inst/doc: Worked on the vignette.
886 :    
887 : feinerer 65 2006-10-31 Ingo Feinerer <h0125130@wu-wien.ac.at>
888 :    
889 : feinerer 66 * inst/: Added texts and started vignette.
890 :    
891 : feinerer 65 * R/: Final changes based upon David's comments.
892 :    
893 : feinerer 64 2006-10-29 Ingo Feinerer <h0125130@wu-wien.ac.at>
894 :    
895 :     * NAMESPACE: Corrected exports (generic methods need exportMethods
896 :     directives!).
897 :    
898 : feinerer 63 2006-10-26 Ingo Feinerer <h0125130@wu-wien.ac.at>
899 :    
900 :     * R/: Modified the TextDocCol constructur and various parsers. It
901 :     is now modular and supports various file formats via plugins (see
902 :     the new "Source" class).
903 :    
904 : feinerer 62 2006-10-24 Ingo Feinerer <h0125130@wu-wien.ac.at>
905 :    
906 :     * man/: Revised documentation after previous code changes.
907 :    
908 : feinerer 61 2006-10-23 Ingo Feinerer <h0125130@wu-wien.ac.at>
909 :    
910 :     * R/: Remaining changes as discussed with David.
911 :    
912 : feinerer 60 2006-10-22 Ingo Feinerer <h0125130@wu-wien.ac.at>
913 :    
914 :     * R/: Some changes as suggested by David. The rest will follow
915 :     within the next days.
916 :    
917 : feinerer 59 2006-09-26 Ingo Feinerer <h0125130@wu-wien.ac.at>
918 :    
919 :     * man/: Finished documentation.
920 :    
921 : feinerer 58 2006-09-25 Ingo Feinerer <h0125130@wu-wien.ac.at>
922 :    
923 :     * man/: Wrote some documentation.
924 :    
925 : feinerer 56 2006-09-24 Ingo Feinerer <h0125130@wu-wien.ac.at>
926 :    
927 :     * R/: Further syntactic sugar in form of additional assignment and
928 :     accessor methods.
929 :    
930 : feinerer 54 2006-09-13 Ingo Feinerer <h0125130@wu-wien.ac.at>
931 :    
932 :     * R/: Syntactic sugar in form of "length", "show" and "summary"
933 : feinerer 56 operators.
934 : feinerer 54
935 : feinerer 53 2006-08-24 Ingo Feinerer <h0125130@wu-wien.ac.at>
936 :    
937 :     * R/: Diverse updates. Mainly on default operators ("[" or "c")
938 :     and dissimilarities.
939 :    
940 : feinerer 52 2006-08-12 Ingo Feinerer <h0125130@wu-wien.ac.at>
941 :    
942 :     * R/: Added similarity functions.
943 :    
944 :     * data/: Added english stopwords.
945 :    
946 : feinerer 50 2006-08-07 Ingo Feinerer <h0125130@wu-wien.ac.at>
947 :    
948 : feinerer 51 * data/: Examples compiled for new features
949 :    
950 :     * R/: Changes due to new structure.
951 :    
952 : feinerer 50 * NAMESPACE: Corrected namespace to reflect new structure.
953 :    
954 :     * R/termdocmatrix.R: Adapted for new naming scheme.
955 :    
956 : feinerer 49 2006-08-06 Ingo Feinerer <h0125130@wu-wien.ac.at>
957 :    
958 :     * R/textdoccol.R: Adapted code for new class structure. Wrote
959 :     several transform and filter functions operating on text document
960 :     collections (alias text document databases).
961 :    
962 :     * R/aobjects.R: Adapted class structure with inheritance,
963 :     repositories and additional meta data. Loading files on demand is
964 :     now possible.
965 :    
966 : feinerer 48 2006-07-13 Ingo Feinerer <h0125130@wu-wien.ac.at>
967 :    
968 :     * R/: Some cosmetic cleanups.
969 :    
970 :     * inst/: Removed vignette on clustering. That and much more is now
971 :     described in the JSS paper on text mining. Based upon that
972 :     article an elaborated vignette will be incorporated in the future.
973 :    
974 : feinerer 42 2006-07-01 Ingo Feinerer <h0125130@wu-wien.ac.at>
975 :    
976 :     * R/: Updated generic S4 methods to comply with signature changes
977 :     in newer versions of R (> 2.3)
978 :    
979 : feinerer 41 2006-03-12 Ingo Feinerer <h0125130@wu-wien.ac.at>
980 :    
981 :     * ext/R/importRIS.R: Automatic RIS import is now possible.
982 :    
983 : feinerer 40 2006-02-14 Ingo Feinerer <h0125130@wu-wien.ac.at>
984 :    
985 :     * R/textdoccol.R: Added RIS HTML input format.
986 :    
987 : feinerer 39 2006-01-21 Ingo Feinerer <h0125130@wu-wien.ac.at>
988 :    
989 :     * R/textdoccol.R: Removed bug that caused invalid text document
990 :     collections when handling many input files.
991 :    
992 : feinerer 36 2006-01-11 Ingo Feinerer <h0125130@wu-wien.ac.at>
993 :    
994 : feinerer 37 * R/textdoccol.R: Restructured and extended file import
995 :     mechanism.
996 :    
997 : feinerer 36 * inst/doc/clustering.Rnw: Adapted vignette for use with
998 :     ReutNews.rda
999 :    
1000 :     * man/ReutNews.Rd: Documentation for ReutNews.rda
1001 :    
1002 :     * data/ReutNews.rda: A tiny Reuters21578 example data set.
1003 :    
1004 : feinerer 34 2005-12-22 Ingo Feinerer <h0125130@wu-wien.ac.at>
1005 :    
1006 :     * inst/doc/clustering.Rnw: Wrote a small vignette to present the
1007 :     clustering facilities of this package.
1008 :    
1009 : feinerer 33 2005-12-15 Ingo Feinerer <h0125130@wu-wien.ac.at>
1010 :    
1011 :     * R/aobjects.R: Changed package document structure to avoid class
1012 :     dependency problems.
1013 :    
1014 : feinerer 28 2005-12-06 Ingo Feinerer <h0125130@wu-wien.ac.at>
1015 :    
1016 : feinerer 799 * Wrote a script for the ModLewis Split for the Reuters-21578 XML
1017 : feinerer 29 data set.
1018 :    
1019 : feinerer 799 * Finished documentation and reordered directory structure. Now "R
1020 : feinerer 28 CMD check textmin" works without errors.
1021 :    
1022 : feinerer 27 2005-12-04 Ingo Feinerer <h0125130@wu-wien.ac.at>
1023 :    
1024 :     * src/: Various splits can now be easily created for the
1025 :     Reuters21578 data set.
1026 :    
1027 : feinerer 26 2005-12-03 Ingo Feinerer <h0125130@wu-wien.ac.at>
1028 :    
1029 : feinerer 799 * Updated documentation
1030 : feinerer 26
1031 : feinerer 25 2005-11-30 Ingo Feinerer <h0125130@wu-wien.ac.at>
1032 :    
1033 : feinerer 799 * Wrote R documentation for some classes and methods.
1034 : feinerer 25
1035 : feinerer 21 2005-11-19 Ingo Feinerer <h0125130@wu-wien.ac.at>
1036 :    
1037 : feinerer 22 * R/textdoccol.R: Constructor of textdoccol allows import of CSV
1038 :     files. See the questionnaire data/Umfrage.csv for such an example.
1039 : feinerer 23 We are now able to import files in Reuters-21578 XML format.
1040 : feinerer 22
1041 : feinerer 799 * Changed class interfaces in various files. Weighting of the text
1042 : feinerer 21 matrix is now possible.
1043 :    
1044 : feinerer 20 2005-11-08 Ingo Feinerer <h0125130@wu-wien.ac.at>
1045 :    
1046 :     * R/textdoccol.R: One can build term-document matrices if
1047 :     nessecary (with buildTDM(...)) and fill the field tdm from a text
1048 :     document collection with it.
1049 :    
1050 :     * R/textmatrix.R: Wrote S4 class for term-document matrices.
1051 :    
1052 : feinerer 19 2005-11-06 Ingo Feinerer <h0125130@wu-wien.ac.at>
1053 :    
1054 :     * R/textdoccol.R: We now can read in a whole XML file with several
1055 :     news items.
1056 :    
1057 : feinerer 17 2005-11-05 Ingo Feinerer <h0125130@wu-wien.ac.at>
1058 :    
1059 :     * R/textdoccol.R: Set up an S4 class for a collection of text
1060 :     documents. A first attempt to read in XML input (like the RCV1
1061 :     set) was made.
1062 :    
1063 :     * R/textdocument.R: Set up an S4 class for text documents. Wrote
1064 :     some accessor functions.
1065 :    
1066 :     * data/newsitem.xml: Added this XML file for testing purposes. It
1067 :     contains a single news item from the Reuters Corpus Volume 1
1068 :     (RCV1) XML set.
1069 :    
1070 : feinerer 16 2005-10-07 Ingo Feinerer <h0125130@wu-wien.ac.at>
1071 :    
1072 :     * R/textmatrix.R (textmatrix): Removed the transpose of the original
1073 :     textmatrix as k-means clustering provided by R (kmeans) now works on
1074 :     this textmatrix. The result is a k-means text clustering with a
1075 :     similarity measure based upon word frequences.
1076 :    
1077 :     2005-10-05 Ingo Feinerer <h0125130@wu-wien.ac.at>
1078 :    
1079 :     * R/textmatrix.R: Adapted the preprocessing code from the R
1080 :     package "lsa" written by Fridolin Wild to build a document text matrix.
1081 :    
1082 :     2005-10-02 Ingo Feinerer <h0125130@wu-wien.ac.at>
1083 :    
1084 : feinerer 799 * Set up the R Text Mining Package infrastructure.

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