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Revision 1063 - (view) (download)

1 : feinerer 1063 2010-04-09 Ingo Feinerer <feinerer@logic.at>
2 :    
3 :     * R/source.R (.Source): Provide document names.
4 :    
5 : feinerer 1062 2010-04-07 Ingo Feinerer <feinerer@logic.at>
6 :    
7 :     * R/meta.R (`content_or_meta`): Utility function.
8 :    
9 : feinerer 1061 2010-03-19 Ingo Feinerer <feinerer@logic.at>
10 :    
11 :     * R/reader.R (readReut21578XML, readReut21578XMLasPlain): Extract
12 :     TOPICS, LEWISSPLIT, CGISPLIT, and OLDID meta tags.
13 :    
14 : feinerer 1048 2010-03-03 Ingo Feinerer <feinerer@logic.at>
15 :    
16 : feinerer 1051 * R/weight.R (weightTfIdf): Added normalization option.
17 :    
18 : feinerer 1048 * man/tm_tag_score.Rd: Add General Inquirer example for sentiment
19 :     analysis.
20 :    
21 : feinerer 1046 2010-02-25 Ingo Feinerer <feinerer@logic.at>
22 :    
23 :     * R/score.R (tm_tag_score): Compute a score from the number of
24 :     tags matching in a document.
25 :    
26 : feinerer 1041 2010-02-18 Ingo Feinerer <feinerer@logic.at>
27 :    
28 :     * R/complete.R (stemCompletion): New completion heuristics.
29 :    
30 :     2010-02-17 Ingo Feinerer <feinerer@logic.at>
31 :    
32 :     * R/plot.R (plot.TermDocumentMatrix): Memory improvements.
33 :    
34 : feinerer 1040 2010-02-06 Ingo Feinerer <feinerer@logic.at>
35 :    
36 :     * DESCRIPTION (Depends): Depend on R (>= 2.10.0) to ensure that
37 :     setOldClass(c(..., "list")) works.
38 :    
39 : feinerer 1039 2010-01-22 Ingo Feinerer <feinerer@logic.at>
40 :    
41 :     * R/transform.R (stemDocument.character): In case input is a
42 :     simple character just delegate to the default Snowball stemmer.
43 :    
44 : feinerer 1038 2010-01-15 Ingo Feinerer <feinerer@logic.at>
45 :    
46 :     * R/reader.R (readReut21578XML, readRCV1): Extract more meta
47 :     data.
48 :    
49 : feinerer 1034 2010-01-12 Ingo Feinerer <feinerer@logic.at>
50 :    
51 :     * R/doc.R (`Content<-`): Be careful with names attribute.
52 :    
53 : stefan7th 1032 2010-01-07 Stefan Theussl <stefan.theussl@wu.ac.at>
54 :    
55 :     * R/source.R (DirSource): Improved implementation especially when
56 : feinerer 1042 handling many (> 1M) files.
57 : stefan7th 1032
58 : feinerer 1029 2009-12-22 Ingo Feinerer <feinerer@logic.at>
59 :    
60 :     * R/source.R (getElem.URISource): Use encoding argument.
61 :    
62 : feinerer 1025 2009-12-11 Ingo Feinerer <feinerer@logic.at>
63 :    
64 :     * R/doc.R (setOldClass): Register S3 document classes to be
65 :     recognized by S4 methods.
66 :    
67 : feinerer 1023 2009-11-25 Ingo Feinerer <feinerer@logic.at>
68 :    
69 :     * R/matrix.R (termFreq): Add option to remove punctuation
70 :     characters.
71 :    
72 : feinerer 1022 2009-11-19 Ingo Feinerer <feinerer@logic.at>
73 :    
74 :     * R/matrix.R (c.TermDocumentMatrix): Added combine method for
75 :     merging multiple term-document matrices.
76 :    
77 : feinerer 1020 2009-11-17 Ingo Feinerer <feinerer@logic.at>
78 :    
79 : feinerer 1021 * R/corpus.R (setOldClass): Register S3 corpus classes to be
80 :     recognized by S4 methods.
81 :    
82 : feinerer 1020 * man/plot.Rd: Use \dontrun{} in \examples{} section in the hope
83 :     that CRAN Mac OS X builds do not fail any longer.
84 :    
85 : feinerer 1019 2009-11-15 Ingo Feinerer <feinerer@logic.at>
86 :    
87 :     * R/matrix.R (tokenize): Use scan(..., what = "character") instead
88 :     of RWeka:AlphabeticTokenizer() as default.
89 :    
90 : feinerer 1018 2009-11-14 Ingo Feinerer <feinerer@logic.at>
91 :    
92 :     * R/transform.R (removeWords.PlainTextDocument): Fix bug which
93 :     caused words at the beginning or the end of a line not to be removed. Do
94 :     not delete whitespace anymore.
95 :    
96 : feinerer 1017 2009-11-12 Ingo Feinerer <feinerer@logic.at>
97 :    
98 :     * R/source.R (DirSource): Default to working directory if no path
99 :     is specified.
100 :    
101 :     2009-11-11 Ingo Feinerer <feinerer@logic.at>
102 :    
103 :     * R/source.R (DirSource): Stop on empty directories.
104 :    
105 : feinerer 1015 2009-11-07 Ingo Feinerer <feinerer@logic.at>
106 :    
107 :     * R/matrix.R (TermDocumentMatrix): Avoid prefixes originating from
108 :     named documents.
109 :    
110 : feinerer 1013 2009-10-21 Ingo Feinerer <feinerer@logic.at>
111 :    
112 :     * R/transform.R (removeWords): Improve regular expressions.
113 :    
114 : feinerer 1011 2009-10-19 Ingo Feinerer <feinerer@logic.at>
115 :    
116 :     * R/meta.R (DublinCore): Allow lower case tags.
117 :    
118 : feinerer 1010 2009-10-09 Ingo Feinerer <feinerer@logic.at>
119 :    
120 :     * R/source.R (GmaneSource, ReutersSource): Use xmlChildren(x)
121 :     instead of x$children.
122 :    
123 : feinerer 1007 2009-09-15 Ingo Feinerer <feinerer@logic.at>
124 :    
125 :     * R/preprocess.R (preprocessReut21578XML): Fix generated file names.
126 :    
127 : feinerer 993 2009-09-06 Ingo Feinerer <feinerer@logic.at>
128 :    
129 :     * R/: Use S3 instead of S4 class system.
130 :    
131 : feinerer 982 2009-08-11 Ingo Feinerer <feinerer@logic.at>
132 :    
133 :     * R/reader.R (readMail): Moved to tm.plugin.mail package.
134 :    
135 : feinerer 973 2009-07-04 Ingo Feinerer <feinerer@logic.at>
136 :    
137 :     * R/reader.R (readNewsgroup): Rename to readMail as newsgroup
138 :     postings are basically e-mails with some extra headers.
139 :    
140 : feinerer 972 2009-07-03 Ingo Feinerer <feinerer@logic.at>
141 :    
142 : feinerer 981 * R/transform.R: Move convertMboxEml, removeCitation,
143 :     removeMultipart, and removeSignature to the tm.plugin.mail package
144 :     since they are mainly utility functions (for handling e-mails) and
145 :     not very framework specific.
146 : feinerer 972
147 : feinerer 962 2009-06-28 Ingo Feinerer <feinerer@logic.at>
148 :    
149 :     * man/: Fix documentation.
150 :    
151 : feinerer 960 2009-06-26 Ingo Feinerer <feinerer@logic.at>
152 :    
153 :     * R/reader.R (readReut21578XMLasPlain): New reader which returns a
154 :     plain text document instead of an XML document for texts of the
155 :     Reuters-21578 dataset.
156 :    
157 :     * R/sparse.R: Removed since the slam package is now available on
158 :     CRAN.
159 :    
160 :     * DESCRIPTION (Depends): Add slam package.
161 :    
162 : feinerer 959 2009-06-17 Ingo Feinerer <feinerer@logic.at>
163 :    
164 :     * R/transform.R (stemDoc): Fix character(0) handling.
165 :    
166 : feinerer 957 2009-06-12 Ingo Feinerer <feinerer@logic.at>
167 :    
168 :     * R/doc.R (show): Pretty print.
169 :    
170 : feinerer 954 2009-05-27 Ingo Feinerer <feinerer@logic.at>
171 :    
172 :     * R/matrix.R (print.TermDocumentMatrix): Handle empty matrices
173 :     gracefully.
174 :    
175 : feinerer 946 2009-05-13 Ingo Feinerer <feinerer@logic.at>
176 :    
177 :     * R/corpus.R: Make corpus virtual. Implement corpus with standard
178 :     and permanent storage semantics.
179 :    
180 :     * DESCRIPTION: New major release. A *lot* of improvements.
181 :    
182 : feinerer 945 2009-05-04 Ingo Feinerer <feinerer@logic.at>
183 :    
184 :     * NAMESPACE: Export some simple_triplet_matrix functions.
185 :    
186 : feinerer 942 2009-04-28 Ingo Feinerer <feinerer@logic.at>
187 :    
188 :     * R/weight.R: Adapt tf-idf to new matrix format.
189 :    
190 : feinerer 941 2009-04-27 Ingo Feinerer <feinerer@logic.at>
191 :    
192 :     * R/matrix.R: Create two distinct classes for term-document and
193 :     document-term matrices.
194 :    
195 : feinerer 938 2009-04-26 Ingo Feinerer <feinerer@logic.at>
196 :    
197 : feinerer 939 * R/termdocmatrix.R: No longer use Matrix package. This reduces
198 :     package start-up time significantly.
199 : feinerer 938
200 : feinerer 930 2009-04-11 Ingo Feinerer <feinerer@logic.at>
201 :    
202 :     * inst/doc/tm.Rnw: Fix code/documentation mismatch.
203 :    
204 : feinerer 926 2009-04-04 Ingo Feinerer <feinerer@logic.at>
205 :    
206 :     * R/transform.R (tmReduce): Combine multiple maps into one
207 :     transformation.
208 :    
209 : feinerer 923 2009-04-03 Ingo Feinerer <feinerer@logic.at>
210 :    
211 : feinerer 924 * R/weight.R: Remove weightLogical since it does not return a
212 :     dgCMatrix.
213 :    
214 : feinerer 925 * R/termdocmatrix.R: Removed TermDocMatrix. Use DocumentTermMatrix
215 :     or TermDocumentMatrix instead.
216 : feinerer 923
217 : feinerer 919 2009-03-28 Ingo Feinerer <feinerer@logic.at>
218 :    
219 :     * inst/doc/extensions.Rnw: Finished vignette.
220 :    
221 : feinerer 918 2009-03-27 Ingo Feinerer <feinerer@logic.at>
222 :    
223 :     * R/termdocmatrix.R: Start to work on new TermDocumentMatrix and
224 :     DocumentTermMatrix representations.
225 :    
226 : feinerer 912 2009-03-23 Ingo Feinerer <feinerer@logic.at>
227 :    
228 :     * R/reader.R (readXML): New reader for arbitrary XML files.
229 :    
230 : feinerer 909 2009-03-22 Ingo Feinerer <feinerer@logic.at>
231 :    
232 : feinerer 910 * R/source.R (CSVSource): Defunct (use DataframeSource instead).
233 : feinerer 911 (XMLSource): New XMLSource class for arbitrary XML files.
234 :     (Source): New slot Vectorized.
235 : feinerer 910
236 : feinerer 904 2009-03-21 Ingo Feinerer <feinerer@logic.at>
237 :    
238 : feinerer 939 * R/reader.R (readTabular): Experimental reader for tabular data
239 :     structures which can be customized via user-defined mappings.
240 : feinerer 908
241 : feinerer 905 * R/reader.R: Always use UTC time zone.
242 :    
243 : feinerer 904 * R/AAA.R (.onLoad): No longer try to start a MPI cluster.
244 :    
245 : feinerer 903 2009-03-20 Ingo Feinerer <feinerer@logic.at>
246 :    
247 :     * R/reader.R (readDOC): Options can be passed over to antiword.
248 :    
249 :     * R/reader.R (readPDF): Options can be passed over to pdfinfo and
250 :     pdftotext.
251 :    
252 : feinerer 895 2009-03-10 Ingo Feinerer <feinerer@logic.at>
253 :    
254 :     * R/source.R (DirSource): Add pattern and ignore.case arguments
255 :     which are internally passed over to list.files().
256 :    
257 : feinerer 893 2009-03-02 Ingo Feinerer <feinerer@logic.at>
258 :    
259 :     * inst/doc/tm.Rnw: Suppress pointless loading message.
260 :    
261 : feinerer 886 2009-01-29 Ingo Feinerer <feinerer@logic.at>
262 :    
263 :     * DESCRIPTION: Speed up package loading (via moving packages not
264 :     strictly necessary for normal operation to Suggests instead of
265 :     Depends).
266 :    
267 : feinerer 882 2009-01-08 Ingo Feinerer <feinerer@logic.at>
268 :    
269 :     * R/reader.R (readNewsgroup): The date format is now configurable.
270 :    
271 : feinerer 881 2008-12-20 Ingo Feinerer <feinerer@logic.at>
272 :    
273 :     * R/preprocess.R (convertMboxEml): Fix off-by-one error.
274 :    
275 : feinerer 877 2008-12-16 Ingo Feinerer <feinerer@logic.at>
276 :    
277 :     * R/termdocmatrix.R (TermDocMatrix): Sort row indices.
278 :    
279 : feinerer 875 2008-12-06 Ingo Feinerer <feinerer@logic.at>
280 :    
281 : feinerer 876 * R/source.R (DataframeSource): New source class for data frames.
282 :    
283 : feinerer 875 * R/source.R: Fixed non-standard call evaluation.
284 :    
285 : feinerer 874 2008-11-29 Ingo Feinerer <feinerer@logic.at>
286 :    
287 :     * R/source.R (URISource): New source class for a single document.
288 :    
289 : feinerer 873 2008-11-27 Ingo Feinerer <feinerer@logic.at>
290 :    
291 :     * R/source.R: Refactoring.
292 :    
293 : feinerer 872 2008-11-25 Ingo Feinerer <feinerer@logic.at>
294 :    
295 :     * R/AAA.R (.onLoad, .Last): Use tryCatch() to handle misconfigured
296 :     Rmpi installations more gracefully.
297 :    
298 : feinerer 869 2008-11-08 Ingo Feinerer <feinerer@logic.at>
299 :    
300 :     * R/source.R (Source): Add Length slot.
301 :    
302 :     2008-11-06 Ingo Feinerer <feinerer@logic.at>
303 :    
304 :     * R/AAA.R: Unify duplicated .onLoad function.
305 :    
306 : feinerer 868 2008-11-03 Ingo Feinerer <feinerer@logic.at>
307 :    
308 :     * DESCRIPTION (Suggests): Added Rmpi.
309 :    
310 : feinerer 866 2008-11-02 Ingo Feinerer <feinerer@logic.at>
311 :    
312 :     * R/source.R (getElem): Fix 'no visible binding' warning.
313 :    
314 :     * man/WeightFunction.Rd: Fix signature.
315 :    
316 : feinerer 865 2008-08-03 Ingo Feinerer <feinerer@logic.at>
317 :    
318 :     * R/weight.R: Introduce name abbreviations for weighting functions.
319 :    
320 : feinerer 861 2008-07-24 Ingo Feinerer <feinerer@logic.at>
321 :    
322 :     * R/AAA.R (.onLoad, .Last): Start and stop MPI cluster.
323 :    
324 :     * R/cluster.R: Provide convenience functions for using a MPI
325 :     cluster.
326 :    
327 :     * R/termdocmatrix.R (TermDocMatrix): Use MPI cluster if
328 :     available.
329 :    
330 :     * R/textdoccol.R (tmIndex, tmFilter, tmMap): Use MPI cluster if
331 :     available.
332 :    
333 : feinerer 860 2008-07-17 Ingo Feinerer <feinerer@logic.at>
334 :    
335 :     * R/textdoccol.R (lapply): Removed debug print out.
336 :    
337 : feinerer 856 2008-06-06 Ingo Feinerer <h0125130@wu-wien.ac.at>
338 :    
339 :     * R/reader.R (readRCV1): Improved meta data extraction from
340 :     Reuters Corpus Volume 1 documents.
341 :    
342 : feinerer 855 2008-05-25 Ingo Feinerer <h0125130@wu-wien.ac.at>
343 :    
344 :     * R/transform.R: Ensure that all mappings preserve multiline
345 :     structures.
346 :    
347 : feinerer 854 2008-05-24 Ingo Feinerer <h0125130@wu-wien.ac.at>
348 :    
349 :     * R/filter.R: Every filter has now an attribute indicating whether
350 :     it sould be applied to document level (doclevel).
351 :    
352 :     * R/textdoccol.R (tmFilter): Set searchFullText as new default
353 :     filter.
354 :    
355 : feinerer 838 2008-04-23 Ingo Feinerer <h0125130@wu-wien.ac.at>
356 :    
357 :     * R/transform.R (replacePatterns): Replaced removeWords by
358 :     replacePatterns. Suggested by Christian Buchta.
359 :    
360 :     * R/textdoccol.R (inspect): Improved formatting.
361 :    
362 : feinerer 836 2008-04-19 Ingo Feinerer <h0125130@wu-wien.ac.at>
363 :    
364 :     * inst/CITATION: Updated JSS article information.
365 :    
366 :     * R/textdoccol.R (setAs): Added coerce method from list to
367 :     corpus.
368 :    
369 :     * R/meta.R (meta): Improved meta data handling.
370 :    
371 : feinerer 833 2008-03-21 Ingo Feinerer <h0125130@wu-wien.ac.at>
372 :    
373 :     * R/textdoccol.R (materialize, tmMap): Improvements suggested by
374 :     Christian Buchta.
375 :    
376 :     * inst/CITATION: Added template to include JSS article reference.
377 :    
378 : feinerer 831 2008-03-12 Ingo Feinerer <h0125130@wu-wien.ac.at>
379 :    
380 :     * R/textdoccol.R (tmMap): Introduced lazy mapping.
381 :    
382 : feinerer 832 * R/source.R: Added VectorSource.
383 :    
384 : feinerer 825 2008-02-23 Ingo Feinerer <h0125130@wu-wien.ac.at>
385 :    
386 :     * man/: Language codes should be in ISO 639-1 format.
387 :    
388 : feinerer 826 * R/textdoccol.R (asPlain): Preserve local meta data.
389 :    
390 : feinerer 819 2008-01-31 Ingo Feinerer <h0125130@wu-wien.ac.at>
391 :    
392 :     * R/textdoccol.R (writeCorpus): Function for writing a corpus
393 :     containing plain text documents to disk.
394 :    
395 : feinerer 817 2008-01-30 Ingo Feinerer <h0125130@wu-wien.ac.at>
396 :    
397 :     * R/termdocmatrix.R (TermDocMatrix): Ensure that dimnames are
398 :     always set correctly.
399 :    
400 :     * R/textdoccol.R: Set load = TRUE as default for load on demand
401 :     since in most cases this is the wanted behaviour.
402 :    
403 : feinerer 816 2008-01-24 Ingo Feinerer <h0125130@wu-wien.ac.at>
404 :    
405 :     * R/: Renamed TextDocCol to Corpus, and Corpus to Content.
406 :    
407 :     * DESCRIPTION: Updated Version to 0.3 due to core name changes.
408 :    
409 : feinerer 813 2008-01-22 Ingo Feinerer <h0125130@wu-wien.ac.at>
410 :    
411 :     * R/meta.R (meta): New function for consistent access to meta data
412 :     of document collections, repositories, and texts.
413 :    
414 : feinerer 810 2008-01-21 Ingo Feinerer <h0125130@wu-wien.ac.at>
415 :    
416 :     * R/: Better support for encodings.
417 :    
418 : feinerer 808 2008-01-13 Ingo Feinerer <h0125130@wu-wien.ac.at>
419 :    
420 :     * R/textdoccol.R (TextDocCol): Fixed bug regarding default reader
421 :     selection when no reader argument is given.
422 :    
423 : feinerer 807 2008-01-05 Ingo Feinerer <h0125130@wu-wien.ac.at>
424 :    
425 :     * R/source.R (CSVSource): Now uses read.csv instead of scan
426 :     internally.
427 :    
428 : feinerer 806 2008-01-02 Ingo Feinerer <h0125130@wu-wien.ac.at>
429 :    
430 :     * R/reader.R (getReaders): Returns available reader functions.
431 :    
432 :     * R/termdocmatrix.R (TermDocMatrix): Set new modular constructor
433 :     as default.
434 :    
435 : feinerer 802 2007-12-02 Ingo Feinerer <h0125130@wu-wien.ac.at>
436 :    
437 :     * R/stopwords.R (stopwords): Shortened code, removed codetools
438 :     variable warnings.
439 :    
440 :     * man/: Documentation for showMeta, added an example for tmMap.
441 :    
442 :     * inst/doc/tm.Rnw: Updated vignette, comments on MS word reader,
443 :     some minor typos fixed.
444 :    
445 : feinerer 801 2007-12-01 Ingo Feinerer <h0125130@wu-wien.ac.at>
446 :    
447 :     * R/aobjects.R (showMeta): Added method for pretty printing a
448 :     text document's meta data.
449 :    
450 : feinerer 799 2007-11-29 Ingo Feinerer <h0125130@wu-wien.ac.at>
451 :    
452 :     * R/textdoccol.R (TextDocCol): Better handling of empty
453 :     arguments.
454 :    
455 :     * NAMESPACE: Exported readDOC.
456 :    
457 : feinerer 800 * man/completeStems.Rd: Added an example.
458 :    
459 : feinerer 797 2007-11-18 Ingo Feinerer <h0125130@wu-wien.ac.at>
460 : feinerer 796
461 : feinerer 797 * R/stopwords.R (stopwords): Look up .dat files at every
462 :     call. Allows users to modify stopword .dat files interactively.
463 :    
464 :     2007-11-06 Ingo Feinerer <h0125130@wu-wien.ac.at>
465 :    
466 : feinerer 796 * R/termdocmatrix.R (termFreq): Correct processing of empty
467 :     documents.
468 :    
469 : feinerer 795 2007-10-27 Ingo Feinerer <h0125130@wu-wien.ac.at>
470 :    
471 :     * man/: Updated documentation.
472 :    
473 : feinerer 790 2007-10-21 Ingo Feinerer <h0125130@wu-wien.ac.at>
474 :    
475 : feinerer 793 * R/complete.R (completeStems): Completes (heuristically) word
476 :     stems.
477 :    
478 : feinerer 790 * R/termdocmatrix.R (TermDocMatrix2): New modular
479 :     constructor.
480 :    
481 :     * NAMESPACE: Exported termFreq.
482 :    
483 : feinerer 789 2007-10-16 Ingo Feinerer <h0125130@wu-wien.ac.at>
484 :    
485 :     * R/reader.R (readDOC): Added MS Word reader (using antiword).
486 :    
487 : feinerer 788 2007-10-14 Ingo Feinerer <h0125130@wu-wien.ac.at>
488 :    
489 :     * R/weight.R: Weighting functions for TermDocMatrix.
490 :    
491 : feinerer 785 2007-10-13 Ingo Feinerer <h0125130@wu-wien.ac.at>
492 :    
493 :     * R/termdocmatrix.R (dimnames, colnames, rownames): Wrapper
494 :     functions for accessing dimension, column, and row names.
495 :    
496 :     * R/plot.R (plot.TermDocMatrix): Plot correlations between terms.
497 :    
498 : feinerer 779 2007-09-11 Ingo Feinerer <h0125130@wu-wien.ac.at>
499 :    
500 :     * man/removePunctuation.Rd: Added documentation. Function also exported to NAMESPACE.
501 :    
502 : feinerer 777 2007-08-28 Ingo Feinerer <h0125130@wu-wien.ac.at>
503 :    
504 :     * R/fungen.R: Use S4 class for function generators instead of S3 attributes.
505 :    
506 : feinerer 776 2007-07-29 Ingo Feinerer <h0125130@wu-wien.ac.at>
507 :    
508 :     * R/reader.R (readPDF): Removed manual checks for pdftotext and
509 :     pdfinfo. The system call gives a warning anyway.
510 :    
511 : feinerer 775 2007-07-28 Ingo Feinerer <h0125130@wu-wien.ac.at>
512 :    
513 :     * R/textdoccol.R (asPlain): Conversion from
514 :     StructuredTextDocuments to PlainTextDocuments.
515 :    
516 : feinerer 773 2007-07-21 Ingo Feinerer <h0125130@wu-wien.ac.at>
517 :    
518 : feinerer 774 * R/termdocmatrix.R: Added convenience methods ("[", nrow, ncol)
519 :     for accessing term-document matrices.
520 :    
521 : feinerer 773 * inst/doc/tm.Rnw: readPDF is only called if pdftotext and pdfinfo
522 :     are installed.
523 :    
524 : feinerer 770 2007-07-17 Ingo Feinerer <h0125130@wu-wien.ac.at>
525 :    
526 :     * R/termdocmatrix.R (TermDocMatrix): Improved efficiency. Kudos to
527 :     Christian Buchta.
528 :    
529 : feinerer 768 2007-07-15 Ingo Feinerer <h0125130@wu-wien.ac.at>
530 :    
531 :     * inst/doc/tm.Rnw: Update vignette (readPDF, readHTML, preprocessReut21578XML).
532 :    
533 : feinerer 766 2007-07-14 Ingo Feinerer <h0125130@wu-wien.ac.at>
534 :    
535 : feinerer 767 * R/reader.R (readHTML): Added very simple HTML reader to obtain StructuredTextDocuments.
536 :    
537 : feinerer 766 * R/reader.R (readPDF): Added PDF reader.
538 :    
539 : feinerer 765 2007-07-13 Ingo Feinerer <h0125130@wu-wien.ac.at>
540 :    
541 :     * DESCRIPTION: Moved proxy from Depends to Imports to avoid name clashes.
542 :    
543 :     * inst/stopwords/english.dat: Added the term "yes" to stopwords.
544 :    
545 :     * R/termdocmatrix.R (dim): dim function for TermDocMatrix.
546 :    
547 :     * R/preprocess.R (convertMboxEml): Accepts gzipped mboxes.
548 :    
549 : feinerer 763 2007-07-11 Ingo Feinerer <h0125130@wu-wien.ac.at>
550 :    
551 :     * R/distmeasure.R (dissimilarity): Replaced dists call from
552 :     package cba by new dist call from package proxy.
553 :    
554 : feinerer 761 2007-07-10 Ingo Feinerer <h0125130@wu-wien.ac.at>
555 :    
556 :     * inst/doc/tm.Rnw: Described removeSparseTerms and Dictionary.
557 :    
558 : feinerer 760 2007-06-21 Ingo Feinerer <h0125130@wu-wien.ac.at>
559 :    
560 :     * R/termdocmatrix.R: require() uses the quietly option to suppress
561 :     loading messages.
562 :    
563 : feinerer 758 2007-06-12 Ingo Feinerer <h0125130@wu-wien.ac.at>
564 :    
565 :     * R/dictionary.R: Added dictionary support.
566 :    
567 : feinerer 757 2007-06-07 Ingo Feinerer <h0125130@wu-wien.ac.at>
568 :    
569 :     * R/aobjects.R: Added classes for Reuters21578 XML and RCV1
570 :     documents. This simplifies some functions, e.g., asPlain.
571 :    
572 : feinerer 756 2007-06-06 Ingo Feinerer <h0125130@wu-wien.ac.at>
573 :    
574 :     * inst/doc/tm.Rnw: Fixed some typos in vignette.
575 :    
576 : feinerer 755 2007-06-03 Ingo Feinerer <h0125130@wu-wien.ac.at>
577 :    
578 :     * R/textdoccol.R (replaceWords): Added method to replace a set of
579 :     words by a single word. Useful for synonyms.
580 :    
581 : feinerer 754 2007-05-22 Ingo Feinerer <h0125130@wu-wien.ac.at>
582 :    
583 :     * man/TermDocMatrix.Rd: Fixed documentation on Data slot.
584 :    
585 : feinerer 752 2007-05-19 Ingo Feinerer <h0125130@wu-wien.ac.at>
586 :    
587 :     * R/termdocmatrix.R (textvector): Small fix for dealing with empty
588 :     vectors. Thanks to Ariel Maguyon for his error report.
589 :     (removeSparseTerms): New function to remove columns from a
590 :     term-document matrix exceeding a sparse factor.
591 :    
592 : feinerer 751 2007-05-15 Ingo Feinerer <h0125130@wu-wien.ac.at>
593 :    
594 :     * man/tmUpdate.Rd: Corrected documentation on readerControl parameter.
595 :    
596 : feinerer 750 2007-05-11 Ingo Feinerer <h0125130@wu-wien.ac.at>
597 :    
598 :     * man/sFilter.Rd: Corrected documentation on statement format (use
599 :     '==' instead of '=').
600 :    
601 : feinerer 749 2007-05-08 Ingo Feinerer <h0125130@wu-wien.ac.at>
602 :    
603 :     * R/aobjects.R (StructuredTextDocument): Inherits from
604 :     TextDocument.
605 :    
606 : feinerer 748 2007-05-04 Ingo Feinerer <h0125130@wu-wien.ac.at>
607 :    
608 :     * R/termdocmatrix.R (findFreqTerms): Perform efficient computation
609 :     on sparse matrices as proposed by Martin Maechler.
610 :    
611 : feinerer 747 2007-04-27 Ingo Feinerer <h0125130@wu-wien.ac.at>
612 :    
613 :     * R/textdoccol.R: Removed \code{dbDisconnect} calls since last
614 :     \pkg{filehash} version makes them deprecated.
615 :    
616 : feinerer 744 2007-04-22 Ingo Feinerer <h0125130@wu-wien.ac.at>
617 :    
618 :     * R/termdocmatrix.R (textvector): Stemming is now performed before
619 :     erasing stopwords.
620 :     (weightMatrix): Adapted to handle sparse matrices.
621 :     (TermDocMatrix): Sparse matrix is now efficiently built by
622 :     direct stepwise insertion of row values into it.
623 :    
624 : feinerer 741 2007-04-21 Ingo Feinerer <h0125130@wu-wien.ac.at>
625 :    
626 :     * DESCRIPTION: Replaced \pkg{filehashSQLite} with \pkg{filehash}
627 :     due to ongoing problems. For our purposes the latter is as useful
628 :     as the replaced package.
629 :    
630 : feinerer 738 2007-04-20 Ingo Feinerer <h0125130@wu-wien.ac.at>
631 :    
632 :     * man/TextDocCol.Rd: Replaced \code{readPlain} with \code{object@DefaultReader}.
633 :    
634 :     * man/TermDocMatrix.Rd: Remove deprecated \code{language} argument.
635 :    
636 : feinerer 737 2007-04-15 Ingo Feinerer <h0125130@wu-wien.ac.at>
637 :    
638 :     * R/resolve.R (resolveISOCode): Added ISO 639-1 codes for
639 :     languages with available stopwords.
640 :    
641 : feinerer 736 2007-04-14 Ingo Feinerer <h0125130@wu-wien.ac.at>
642 :    
643 :     * inst/doc/tm.Rnw: Minor corrections in the vignette.
644 :    
645 : feinerer 731 2007-04-11 Ingo Feinerer <h0125130@wu-wien.ac.at>
646 :    
647 : feinerer 732 * DESCRIPTION: Update to version 0.2, since a lot of new features
648 :     have been integrated.
649 : feinerer 731
650 : feinerer 732 * inst/stopwords: Updated existing stopwords and added stopwords
651 :     for various other languages.
652 :    
653 : feinerer 729 2007-04-10 Ingo Feinerer <h0125130@wu-wien.ac.at>
654 :    
655 : feinerer 730 * man/: Updated documentation.
656 :    
657 : feinerer 729 * Work/testDb.R: Script to test database stuff.
658 :    
659 :     * R/: Fixed various database related bugs. Seems to be rather
660 :     useable now, i.e., consider as alpha status for now.
661 :    
662 : feinerer 727 2007-04-08 Ingo Feinerer <h0125130@wu-wien.ac.at>
663 :    
664 :     * R/: Fixed some bugs related to database support.
665 :    
666 : feinerer 726 2007-04-07 Ingo Feinerer <h0125130@wu-wien.ac.at>
667 :    
668 :     * man/: Added a lot of examples to the manuals.
669 :    
670 : feinerer 725 2007-04-05 Ingo Feinerer <h0125130@wu-wien.ac.at>
671 :    
672 :     * man/: Updated parts of the documentation.
673 :    
674 :     * R/textdoccol.R (asPlain): Added conversion from newsgroup
675 :     documents to plain text documents.
676 :    
677 : feinerer 722 2007-04-01 Ingo Feinerer <h0125130@wu-wien.ac.at>
678 :    
679 : feinerer 724 * R/textdoccol.R: Finished experimental database support. Not yet
680 :     intensively tested.
681 :    
682 : feinerer 723 * R/source.R: Now each source has a default reader.
683 :    
684 : feinerer 722 * R/reader.R: \code{FunctionGenerator} is now an attribute, not a
685 :     class anymore.
686 :    
687 :     * R/plaintextdoc.R: Custom show method for plain text documents.
688 :    
689 :     * R/aobjects.R: Added a class for structured text documents.
690 :    
691 :     * R/reader.R: Replaced remaining \code{parser} occurrences with
692 :     \code{reader}.
693 :    
694 :     * R/textdoccol.R (summary): Indent tags.
695 :    
696 : feinerer 725 * R/textdoccol.R (removePunctuation): Transform method to remove
697 : feinerer 722 punctuation marks.
698 :    
699 : feinerer 721 2007-03-21 Ingo Feinerer <h0125130@wu-wien.ac.at>
700 :    
701 :     * R/textdoccol.R (sFilter): Simplified sFilter significantly by
702 :     using prescindMeta().
703 :    
704 : feinerer 719 2007-03-18 Ingo Feinerer <h0125130@wu-wien.ac.at>
705 :    
706 :     * R/textdoccol.R: Improved database support.
707 :    
708 : feinerer 717 2007-03-16 Ingo Feinerer <h0125130@wu-wien.ac.at>
709 :    
710 : feinerer 718 * R/termdocmatrix.R (TermDocMatrix): Uses sparse matrices.
711 :    
712 : feinerer 717 * R/resolve.R (resolveISOcode): Extracts the language from a ISO
713 :     language code.
714 :    
715 :     * R/textdoccol.R (TextDocCol): Refactored several parser arguments
716 :     into parserControl argument.
717 :    
718 :     * R/aobjects.R (TextDocument): Introduced the "Language" slot.
719 :    
720 : feinerer 713 2007-03-14 Ingo Feinerer <h0125130@wu-wien.ac.at>
721 :    
722 : feinerer 715 * Work/tmDataSetup.R: The datasets acq and crude can now be
723 :     created on the fly.
724 :    
725 : feinerer 713 * R/stopwords.R: Introduced a function returning the stopwords for
726 :     a given language (English, German and French at the moment)
727 :    
728 :     * R/textdoccol.R (stemDoc): Stemming uses Rstem if available,
729 :     otherwise falls back to Snowball package.
730 :    
731 : feinerer 711 2007-01-30 Ingo Feinerer <h0125130@wu-wien.ac.at>
732 :    
733 :     * man/dissimilarity-methods.Rd: Make clear that any method offered
734 :     by "dists" from package "cba" can be used.
735 :    
736 : feinerer 708 2007-01-22 Ingo Feinerer <h0125130@wu-wien.ac.at>
737 :    
738 : feinerer 710 * inst/doc/tm.Rnw: Fixed quotes-appearing-as-boxes-bug according
739 :     to Kurt's latex suggestion. Removed points and underscores in
740 :     variable names for consistent naming.
741 :    
742 : feinerer 708 * DESCRIPTION: Update to version 0.1-2.
743 :    
744 :     * man/TextRepository.Rd: Fixed bug in documentation.
745 :    
746 : feinerer 704 2007-01-12 Ingo Feinerer <h0125130@wu-wien.ac.at>
747 :    
748 :     * DESCRIPTION: Update to version 0.1-1.
749 :    
750 : feinerer 702 2007-01-09 Ingo Feinerer <h0125130@wu-wien.ac.at>
751 :    
752 :     * R/textdoccol.R (stemDoc): Use Rstem::wordStem instead of
753 :     wordStem.
754 :    
755 : feinerer 698 2007-01-06 Ingo Feinerer <h0125130@wu-wien.ac.at>
756 :    
757 :     * R/: Changes due to Kurt's review.
758 :    
759 : feinerer 694 2006-12-31 Ingo Feinerer <h0125130@wu-wien.ac.at>
760 :    
761 :     * R/: Implemented improvements based upon comments by David
762 :     Meyer.
763 :    
764 : feinerer 691 2006-12-17 Ingo Feinerer <h0125130@wu-wien.ac.at>
765 :    
766 :     * inst/doc/: Rewrote vignette.
767 :    
768 :     * man/: Improved documentation.
769 :    
770 : feinerer 690 2006-12-16 Ingo Feinerer <h0125130@wu-wien.ac.at>
771 :    
772 :     * man/: Updated documentation.
773 :    
774 :     * DESCRIPTION: Changed package name to "tm". Updated version to
775 :     0.1 for first CRAN release.
776 :    
777 :     * inst/texts/gmane.comp.lang.r.general.mbox: mbox Gmane R mailing
778 :     list archive example.
779 :    
780 :     * inst/texts/gmane.comp.lang.r.gr.rdf: RSS Gmane R mailing list
781 :     archive example.
782 :    
783 :     * R/preprocess.R (convert_mbox_eml): A simple e-mail converter
784 :     from (several mails per box) mbox format to (single mail per file)
785 :     eml format.
786 :    
787 : feinerer 689 2006-12-08 Ingo Feinerer <h0125130@wu-wien.ac.at>
788 :    
789 :     * data/crude.rda: Rebuilt.
790 :    
791 :     * data/acq.rda: Rebuilt.
792 :    
793 :     * R/reader.R: Factored out reader and parser methods from
794 :     textdoccol.R.
795 :    
796 :     * R/source.R: Factored out Source methods from aobjects.R and
797 :     textdoccol.R.
798 :     (GmaneRSource): Encapsulates Gmane R mailing list archive RSS
799 :     feeds.
800 :    
801 :     * R/textdoccol.R (DirSource): Added support for recursive
802 :     traversal of directories.
803 :    
804 :     2006-12-07 Ingo Feinerer <h0125130@wu-wien.ac.at>
805 :    
806 :     * R/textdoccol.R ([[): Loads the document corpus automatically
807 :     into memory upon access.
808 :     (tm_transform, tm_filter): Removed several checks whether the
809 :     document is already loaded ([[ ensures this now).
810 :     (gmane_r_reader): Reader for RSS feeds as provided by the Gmane R
811 :     mailing list archive.
812 :    
813 :     2006-12-06 Ingo Feinerer <h0125130@wu-wien.ac.at>
814 :    
815 :     * R/aobjects.R (TextDocument): Is now a virtual class.
816 :     (Source): Is now a virtual class.
817 :    
818 :     2006-12-05 Ingo Feinerer <h0125130@wu-wien.ac.at>
819 :    
820 :     * R/textdoccol.R (c): Support for an arbitrary number of document
821 :     collections.
822 :    
823 : feinerer 77 2006-11-26 Ingo Feinerer <h0125130@wu-wien.ac.at>
824 :    
825 :     * R/textrepo.R: Updated TextRepository (constructor), append_elem,
826 :     append_meta and remove_meta.
827 :    
828 :     * R/textdoccol.R: Removed modify_metadata method.
829 :    
830 :     * R/textrepo.R: Removed modify_metadata method.
831 :    
832 :     * R/textdoccol.R (remove_meta): Supports removal of document
833 :     collection metadata and document (= in data frame) metadata.
834 :    
835 : feinerer 76 2006-11-23 Ingo Feinerer <h0125130@wu-wien.ac.at>
836 :    
837 :     * R/textdoccol.R (append_doc): Bug fix for handling empty metadata.
838 :    
839 :     * data/crude.rda: Rebuilt.
840 :    
841 :     * data/acq.rda: Rebuilt.
842 :    
843 :     * inst/doc/textmin.Rnw: Updated vignette to reflect code changes.
844 :    
845 :     * R/textdoccol.R ([): Bug fix for subsetting a document
846 :     collection's data frame.
847 :    
848 : feinerer 75 2006-11-22 Ingo Feinerer <h0125130@wu-wien.ac.at>
849 :    
850 :     * R/textdoccol.R: Bug fixes in s_filter. Added full query support
851 :     to s_filter.
852 :    
853 :     * R/textdoccol.R: Local text documents' metadata can now be copied
854 :     to a document collection's data frame with prescind_meta.
855 :    
856 : feinerer 73 2006-11-21 Ingo Feinerer <h0125130@wu-wien.ac.at>
857 :    
858 : feinerer 74 * R/: Text documents' slot metadata is now accessible in s_filter.
859 :    
860 : feinerer 73 * R/: Rewrote s_filter function (has still some restrictions).
861 :    
862 : feinerer 72 2006-11-20 Ingo Feinerer <h0125130@wu-wien.ac.at>
863 :    
864 :     * R/: Various fixes in handling metadata.
865 :    
866 :     * R/: Added update mechanism for text document collections.
867 :    
868 : feinerer 71 2006-11-19 Ingo Feinerer <h0125130@wu-wien.ac.at>
869 :    
870 :     * R/: Merging of document collections now creates a binary tree
871 :     for reconstructing merged document collections.
872 :    
873 :     * R/: Redesign of metadata for document collections.
874 :    
875 : feinerer 70 2006-11-07 Ingo Feinerer <h0125130@wu-wien.ac.at>
876 :    
877 :     * R/: Messages now use \code{ngettext}.
878 :    
879 : feinerer 69 2006-11-03 Ingo Feinerer <h0125130@wu-wien.ac.at>
880 :    
881 :     * R/: Added functions for modifying and removing metadata.
882 :    
883 : feinerer 67 2006-11-01 Ingo Feinerer <h0125130@wu-wien.ac.at>
884 :    
885 :     * man/: Updated some documentation.
886 :    
887 :     * R/: Corrected some connection issues.
888 :    
889 :     * inst/doc: Worked on the vignette.
890 :    
891 : feinerer 65 2006-10-31 Ingo Feinerer <h0125130@wu-wien.ac.at>
892 :    
893 : feinerer 66 * inst/: Added texts and started vignette.
894 :    
895 : feinerer 65 * R/: Final changes based upon David's comments.
896 :    
897 : feinerer 64 2006-10-29 Ingo Feinerer <h0125130@wu-wien.ac.at>
898 :    
899 :     * NAMESPACE: Corrected exports (generic methods need exportMethods
900 :     directives!).
901 :    
902 : feinerer 63 2006-10-26 Ingo Feinerer <h0125130@wu-wien.ac.at>
903 :    
904 :     * R/: Modified the TextDocCol constructur and various parsers. It
905 :     is now modular and supports various file formats via plugins (see
906 :     the new "Source" class).
907 :    
908 : feinerer 62 2006-10-24 Ingo Feinerer <h0125130@wu-wien.ac.at>
909 :    
910 :     * man/: Revised documentation after previous code changes.
911 :    
912 : feinerer 61 2006-10-23 Ingo Feinerer <h0125130@wu-wien.ac.at>
913 :    
914 :     * R/: Remaining changes as discussed with David.
915 :    
916 : feinerer 60 2006-10-22 Ingo Feinerer <h0125130@wu-wien.ac.at>
917 :    
918 :     * R/: Some changes as suggested by David. The rest will follow
919 :     within the next days.
920 :    
921 : feinerer 59 2006-09-26 Ingo Feinerer <h0125130@wu-wien.ac.at>
922 :    
923 :     * man/: Finished documentation.
924 :    
925 : feinerer 58 2006-09-25 Ingo Feinerer <h0125130@wu-wien.ac.at>
926 :    
927 :     * man/: Wrote some documentation.
928 :    
929 : feinerer 56 2006-09-24 Ingo Feinerer <h0125130@wu-wien.ac.at>
930 :    
931 :     * R/: Further syntactic sugar in form of additional assignment and
932 :     accessor methods.
933 :    
934 : feinerer 54 2006-09-13 Ingo Feinerer <h0125130@wu-wien.ac.at>
935 :    
936 :     * R/: Syntactic sugar in form of "length", "show" and "summary"
937 : feinerer 56 operators.
938 : feinerer 54
939 : feinerer 53 2006-08-24 Ingo Feinerer <h0125130@wu-wien.ac.at>
940 :    
941 :     * R/: Diverse updates. Mainly on default operators ("[" or "c")
942 :     and dissimilarities.
943 :    
944 : feinerer 52 2006-08-12 Ingo Feinerer <h0125130@wu-wien.ac.at>
945 :    
946 :     * R/: Added similarity functions.
947 :    
948 :     * data/: Added english stopwords.
949 :    
950 : feinerer 50 2006-08-07 Ingo Feinerer <h0125130@wu-wien.ac.at>
951 :    
952 : feinerer 51 * data/: Examples compiled for new features
953 :    
954 :     * R/: Changes due to new structure.
955 :    
956 : feinerer 50 * NAMESPACE: Corrected namespace to reflect new structure.
957 :    
958 :     * R/termdocmatrix.R: Adapted for new naming scheme.
959 :    
960 : feinerer 49 2006-08-06 Ingo Feinerer <h0125130@wu-wien.ac.at>
961 :    
962 :     * R/textdoccol.R: Adapted code for new class structure. Wrote
963 :     several transform and filter functions operating on text document
964 :     collections (alias text document databases).
965 :    
966 :     * R/aobjects.R: Adapted class structure with inheritance,
967 :     repositories and additional meta data. Loading files on demand is
968 :     now possible.
969 :    
970 : feinerer 48 2006-07-13 Ingo Feinerer <h0125130@wu-wien.ac.at>
971 :    
972 :     * R/: Some cosmetic cleanups.
973 :    
974 :     * inst/: Removed vignette on clustering. That and much more is now
975 :     described in the JSS paper on text mining. Based upon that
976 :     article an elaborated vignette will be incorporated in the future.
977 :    
978 : feinerer 42 2006-07-01 Ingo Feinerer <h0125130@wu-wien.ac.at>
979 :    
980 :     * R/: Updated generic S4 methods to comply with signature changes
981 :     in newer versions of R (> 2.3)
982 :    
983 : feinerer 41 2006-03-12 Ingo Feinerer <h0125130@wu-wien.ac.at>
984 :    
985 :     * ext/R/importRIS.R: Automatic RIS import is now possible.
986 :    
987 : feinerer 40 2006-02-14 Ingo Feinerer <h0125130@wu-wien.ac.at>
988 :    
989 :     * R/textdoccol.R: Added RIS HTML input format.
990 :    
991 : feinerer 39 2006-01-21 Ingo Feinerer <h0125130@wu-wien.ac.at>
992 :    
993 :     * R/textdoccol.R: Removed bug that caused invalid text document
994 :     collections when handling many input files.
995 :    
996 : feinerer 36 2006-01-11 Ingo Feinerer <h0125130@wu-wien.ac.at>
997 :    
998 : feinerer 37 * R/textdoccol.R: Restructured and extended file import
999 :     mechanism.
1000 :    
1001 : feinerer 36 * inst/doc/clustering.Rnw: Adapted vignette for use with
1002 :     ReutNews.rda
1003 :    
1004 :     * man/ReutNews.Rd: Documentation for ReutNews.rda
1005 :    
1006 :     * data/ReutNews.rda: A tiny Reuters21578 example data set.
1007 :    
1008 : feinerer 34 2005-12-22 Ingo Feinerer <h0125130@wu-wien.ac.at>
1009 :    
1010 :     * inst/doc/clustering.Rnw: Wrote a small vignette to present the
1011 :     clustering facilities of this package.
1012 :    
1013 : feinerer 33 2005-12-15 Ingo Feinerer <h0125130@wu-wien.ac.at>
1014 :    
1015 :     * R/aobjects.R: Changed package document structure to avoid class
1016 :     dependency problems.
1017 :    
1018 : feinerer 28 2005-12-06 Ingo Feinerer <h0125130@wu-wien.ac.at>
1019 :    
1020 : feinerer 799 * Wrote a script for the ModLewis Split for the Reuters-21578 XML
1021 : feinerer 29 data set.
1022 :    
1023 : feinerer 799 * Finished documentation and reordered directory structure. Now "R
1024 : feinerer 28 CMD check textmin" works without errors.
1025 :    
1026 : feinerer 27 2005-12-04 Ingo Feinerer <h0125130@wu-wien.ac.at>
1027 :    
1028 :     * src/: Various splits can now be easily created for the
1029 :     Reuters21578 data set.
1030 :    
1031 : feinerer 26 2005-12-03 Ingo Feinerer <h0125130@wu-wien.ac.at>
1032 :    
1033 : feinerer 799 * Updated documentation
1034 : feinerer 26
1035 : feinerer 25 2005-11-30 Ingo Feinerer <h0125130@wu-wien.ac.at>
1036 :    
1037 : feinerer 799 * Wrote R documentation for some classes and methods.
1038 : feinerer 25
1039 : feinerer 21 2005-11-19 Ingo Feinerer <h0125130@wu-wien.ac.at>
1040 :    
1041 : feinerer 22 * R/textdoccol.R: Constructor of textdoccol allows import of CSV
1042 :     files. See the questionnaire data/Umfrage.csv for such an example.
1043 : feinerer 23 We are now able to import files in Reuters-21578 XML format.
1044 : feinerer 22
1045 : feinerer 799 * Changed class interfaces in various files. Weighting of the text
1046 : feinerer 21 matrix is now possible.
1047 :    
1048 : feinerer 20 2005-11-08 Ingo Feinerer <h0125130@wu-wien.ac.at>
1049 :    
1050 :     * R/textdoccol.R: One can build term-document matrices if
1051 :     nessecary (with buildTDM(...)) and fill the field tdm from a text
1052 :     document collection with it.
1053 :    
1054 :     * R/textmatrix.R: Wrote S4 class for term-document matrices.
1055 :    
1056 : feinerer 19 2005-11-06 Ingo Feinerer <h0125130@wu-wien.ac.at>
1057 :    
1058 :     * R/textdoccol.R: We now can read in a whole XML file with several
1059 :     news items.
1060 :    
1061 : feinerer 17 2005-11-05 Ingo Feinerer <h0125130@wu-wien.ac.at>
1062 :    
1063 :     * R/textdoccol.R: Set up an S4 class for a collection of text
1064 :     documents. A first attempt to read in XML input (like the RCV1
1065 :     set) was made.
1066 :    
1067 :     * R/textdocument.R: Set up an S4 class for text documents. Wrote
1068 :     some accessor functions.
1069 :    
1070 :     * data/newsitem.xml: Added this XML file for testing purposes. It
1071 :     contains a single news item from the Reuters Corpus Volume 1
1072 :     (RCV1) XML set.
1073 :    
1074 : feinerer 16 2005-10-07 Ingo Feinerer <h0125130@wu-wien.ac.at>
1075 :    
1076 :     * R/textmatrix.R (textmatrix): Removed the transpose of the original
1077 :     textmatrix as k-means clustering provided by R (kmeans) now works on
1078 :     this textmatrix. The result is a k-means text clustering with a
1079 :     similarity measure based upon word frequences.
1080 :    
1081 :     2005-10-05 Ingo Feinerer <h0125130@wu-wien.ac.at>
1082 :    
1083 :     * R/textmatrix.R: Adapted the preprocessing code from the R
1084 :     package "lsa" written by Fridolin Wild to build a document text matrix.
1085 :    
1086 :     2005-10-02 Ingo Feinerer <h0125130@wu-wien.ac.at>
1087 :    
1088 : feinerer 799 * Set up the R Text Mining Package infrastructure.

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