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trunk/tm/ChangeLog revision 708, Mon Jan 22 10:34:12 2007 UTC pkg/ChangeLog revision 1075, Wed Jun 2 17:52:04 2010 UTC
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1    2010-06-02  Ingo Feinerer  <feinerer@logic.at>
2    
3            * R/plot.R (Zipf_plot, Heaps_plot): Plotting functions for Zipf's
4            and Heaps' law.
5    
6    2010-05-18  Ingo Feinerer  <feinerer@logic.at>
7    
8            * R/corpus.R (Corpus, PCorpus): Use element names as IDs if
9            provided by a source.
10    
11    2010-04-09  Ingo Feinerer  <feinerer@logic.at>
12    
13            * R/source.R (.Source): Provide document names.
14    
15    2010-04-07  Ingo Feinerer  <feinerer@logic.at>
16    
17            * R/meta.R (`content_or_meta`): Utility function.
18    
19    2010-03-19  Ingo Feinerer  <feinerer@logic.at>
20    
21            * R/reader.R (readReut21578XML, readReut21578XMLasPlain): Extract
22            TOPICS, LEWISSPLIT, CGISPLIT, and OLDID meta tags.
23    
24    2010-03-03  Ingo Feinerer  <feinerer@logic.at>
25    
26            * R/weight.R (weightTfIdf): Added normalization option.
27    
28            * man/tm_tag_score.Rd: Add General Inquirer example for sentiment
29            analysis.
30    
31    2010-02-25  Ingo Feinerer  <feinerer@logic.at>
32    
33            * R/score.R (tm_tag_score): Compute a score from the number of
34            tags matching in a document.
35    
36    2010-02-18  Ingo Feinerer  <feinerer@logic.at>
37    
38            * R/complete.R (stemCompletion): New completion heuristics.
39    
40    2010-02-17  Ingo Feinerer  <feinerer@logic.at>
41    
42            * R/plot.R (plot.TermDocumentMatrix): Memory improvements.
43    
44    2010-02-06  Ingo Feinerer  <feinerer@logic.at>
45    
46            * DESCRIPTION (Depends): Depend on R (>= 2.10.0) to ensure that
47            setOldClass(c(..., "list")) works.
48    
49    2010-01-22  Ingo Feinerer  <feinerer@logic.at>
50    
51            * R/transform.R (stemDocument.character): In case input is a
52            simple character just delegate to the default Snowball stemmer.
53    
54    2010-01-15  Ingo Feinerer  <feinerer@logic.at>
55    
56            * R/reader.R (readReut21578XML, readRCV1): Extract more meta
57            data.
58    
59    2010-01-12  Ingo Feinerer  <feinerer@logic.at>
60    
61            * R/doc.R (`Content<-`): Be careful with names attribute.
62    
63    2010-01-07  Stefan Theussl  <stefan.theussl@wu.ac.at>
64    
65            * R/source.R (DirSource): Improved implementation especially when
66            handling many (> 1M) files.
67    
68    2009-12-22  Ingo Feinerer  <feinerer@logic.at>
69    
70            * R/source.R (getElem.URISource): Use encoding argument.
71    
72    2009-12-11  Ingo Feinerer  <feinerer@logic.at>
73    
74            * R/doc.R (setOldClass): Register S3 document classes to be
75            recognized by S4 methods.
76    
77    2009-11-25  Ingo Feinerer  <feinerer@logic.at>
78    
79            * R/matrix.R (termFreq): Add option to remove punctuation
80            characters.
81    
82    2009-11-19  Ingo Feinerer  <feinerer@logic.at>
83    
84            * R/matrix.R (c.TermDocumentMatrix): Added combine method for
85            merging multiple term-document matrices.
86    
87    2009-11-17  Ingo Feinerer  <feinerer@logic.at>
88    
89            * R/corpus.R (setOldClass): Register S3 corpus classes to be
90            recognized by S4 methods.
91    
92            * man/plot.Rd: Use \dontrun{} in \examples{} section in the hope
93            that CRAN Mac OS X builds do not fail any longer.
94    
95    2009-11-15  Ingo Feinerer  <feinerer@logic.at>
96    
97            * R/matrix.R (tokenize): Use scan(..., what = "character") instead
98            of RWeka:AlphabeticTokenizer() as default.
99    
100    2009-11-14  Ingo Feinerer  <feinerer@logic.at>
101    
102            * R/transform.R (removeWords.PlainTextDocument): Fix bug which
103            caused words at the beginning or the end of a line not to be removed. Do
104            not delete whitespace anymore.
105    
106    2009-11-12  Ingo Feinerer  <feinerer@logic.at>
107    
108            * R/source.R (DirSource): Default to working directory if no path
109            is specified.
110    
111    2009-11-11  Ingo Feinerer  <feinerer@logic.at>
112    
113            * R/source.R (DirSource): Stop on empty directories.
114    
115    2009-11-07  Ingo Feinerer  <feinerer@logic.at>
116    
117            * R/matrix.R (TermDocumentMatrix): Avoid prefixes originating from
118            named documents.
119    
120    2009-10-21  Ingo Feinerer  <feinerer@logic.at>
121    
122            * R/transform.R (removeWords): Improve regular expressions.
123    
124    2009-10-19  Ingo Feinerer  <feinerer@logic.at>
125    
126            * R/meta.R (DublinCore): Allow lower case tags.
127    
128    2009-10-09  Ingo Feinerer  <feinerer@logic.at>
129    
130            * R/source.R (GmaneSource, ReutersSource): Use xmlChildren(x)
131            instead of x$children.
132    
133    2009-09-15  Ingo Feinerer  <feinerer@logic.at>
134    
135            * R/preprocess.R (preprocessReut21578XML): Fix generated file names.
136    
137    2009-09-06  Ingo Feinerer  <feinerer@logic.at>
138    
139            * R/: Use S3 instead of S4 class system.
140    
141    2009-08-11  Ingo Feinerer  <feinerer@logic.at>
142    
143            * R/reader.R (readMail): Moved to tm.plugin.mail package.
144    
145    2009-07-04  Ingo Feinerer  <feinerer@logic.at>
146    
147            * R/reader.R (readNewsgroup): Rename to readMail as newsgroup
148            postings are basically e-mails with some extra headers.
149    
150    2009-07-03  Ingo Feinerer  <feinerer@logic.at>
151    
152            * R/transform.R: Move convertMboxEml, removeCitation,
153            removeMultipart, and removeSignature to the tm.plugin.mail package
154            since they are mainly utility functions (for handling e-mails) and
155            not very framework specific.
156    
157    2009-06-28  Ingo Feinerer  <feinerer@logic.at>
158    
159            * man/: Fix documentation.
160    
161    2009-06-26  Ingo Feinerer  <feinerer@logic.at>
162    
163            * R/reader.R (readReut21578XMLasPlain): New reader which returns a
164            plain text document instead of an XML document for texts of the
165            Reuters-21578 dataset.
166    
167            * R/sparse.R: Removed since the slam package is now available on
168            CRAN.
169    
170            * DESCRIPTION (Depends): Add slam package.
171    
172    2009-06-17  Ingo Feinerer  <feinerer@logic.at>
173    
174            * R/transform.R (stemDoc): Fix character(0) handling.
175    
176    2009-06-12  Ingo Feinerer  <feinerer@logic.at>
177    
178            * R/doc.R (show): Pretty print.
179    
180    2009-05-27  Ingo Feinerer  <feinerer@logic.at>
181    
182            * R/matrix.R (print.TermDocumentMatrix): Handle empty matrices
183            gracefully.
184    
185    2009-05-13  Ingo Feinerer  <feinerer@logic.at>
186    
187            * R/corpus.R: Make corpus virtual. Implement corpus with standard
188            and permanent storage semantics.
189    
190            * DESCRIPTION: New major release. A *lot* of improvements.
191    
192    2009-05-04   Ingo Feinerer <feinerer@logic.at>
193    
194            * NAMESPACE: Export some simple_triplet_matrix functions.
195    
196    2009-04-28   Ingo Feinerer <feinerer@logic.at>
197    
198            * R/weight.R: Adapt tf-idf to new matrix format.
199    
200    2009-04-27  Ingo Feinerer  <feinerer@logic.at>
201    
202            * R/matrix.R: Create two distinct classes for term-document and
203            document-term matrices.
204    
205    2009-04-26  Ingo Feinerer  <feinerer@logic.at>
206    
207            * R/termdocmatrix.R: No longer use Matrix package. This reduces
208            package start-up time significantly.
209    
210    2009-04-11  Ingo Feinerer  <feinerer@logic.at>
211    
212            * inst/doc/tm.Rnw: Fix code/documentation mismatch.
213    
214    2009-04-04  Ingo Feinerer  <feinerer@logic.at>
215    
216            * R/transform.R (tmReduce): Combine multiple maps into one
217            transformation.
218    
219    2009-04-03  Ingo Feinerer  <feinerer@logic.at>
220    
221            * R/weight.R: Remove weightLogical since it does not return a
222            dgCMatrix.
223    
224            * R/termdocmatrix.R: Removed TermDocMatrix. Use DocumentTermMatrix
225            or TermDocumentMatrix instead.
226    
227    2009-03-28  Ingo Feinerer  <feinerer@logic.at>
228    
229            * inst/doc/extensions.Rnw: Finished vignette.
230    
231    2009-03-27  Ingo Feinerer  <feinerer@logic.at>
232    
233            * R/termdocmatrix.R: Start to work on new TermDocumentMatrix and
234            DocumentTermMatrix representations.
235    
236    2009-03-23  Ingo Feinerer  <feinerer@logic.at>
237    
238            * R/reader.R (readXML): New reader for arbitrary XML files.
239    
240    2009-03-22  Ingo Feinerer  <feinerer@logic.at>
241    
242            * R/source.R (CSVSource): Defunct (use DataframeSource instead).
243            (XMLSource): New XMLSource class for arbitrary XML files.
244            (Source): New slot Vectorized.
245    
246    2009-03-21  Ingo Feinerer  <feinerer@logic.at>
247    
248            * R/reader.R (readTabular): Experimental reader for tabular data
249            structures which can be customized via user-defined mappings.
250    
251            * R/reader.R: Always use UTC time zone.
252    
253            * R/AAA.R (.onLoad): No longer try to start a MPI cluster.
254    
255    2009-03-20  Ingo Feinerer  <feinerer@logic.at>
256    
257            * R/reader.R (readDOC): Options can be passed over to antiword.
258    
259            * R/reader.R (readPDF): Options can be passed over to pdfinfo and
260            pdftotext.
261    
262    2009-03-10  Ingo Feinerer  <feinerer@logic.at>
263    
264            * R/source.R (DirSource): Add pattern and ignore.case arguments
265            which are internally passed over to list.files().
266    
267    2009-03-02  Ingo Feinerer  <feinerer@logic.at>
268    
269            * inst/doc/tm.Rnw: Suppress pointless loading message.
270    
271    2009-01-29  Ingo Feinerer  <feinerer@logic.at>
272    
273            * DESCRIPTION: Speed up package loading (via moving packages not
274            strictly necessary for normal operation to Suggests instead of
275            Depends).
276    
277    2009-01-08  Ingo Feinerer  <feinerer@logic.at>
278    
279            * R/reader.R (readNewsgroup): The date format is now configurable.
280    
281    2008-12-20  Ingo Feinerer  <feinerer@logic.at>
282    
283            * R/preprocess.R (convertMboxEml): Fix off-by-one error.
284    
285    2008-12-16  Ingo Feinerer  <feinerer@logic.at>
286    
287            * R/termdocmatrix.R (TermDocMatrix): Sort row indices.
288    
289    2008-12-06  Ingo Feinerer  <feinerer@logic.at>
290    
291            * R/source.R (DataframeSource): New source class for data frames.
292    
293            * R/source.R: Fixed non-standard call evaluation.
294    
295    2008-11-29  Ingo Feinerer  <feinerer@logic.at>
296    
297            * R/source.R (URISource): New source class for a single document.
298    
299    2008-11-27  Ingo Feinerer  <feinerer@logic.at>
300    
301            * R/source.R: Refactoring.
302    
303    2008-11-25  Ingo Feinerer  <feinerer@logic.at>
304    
305            * R/AAA.R (.onLoad, .Last): Use tryCatch() to handle misconfigured
306            Rmpi installations more gracefully.
307    
308    2008-11-08  Ingo Feinerer  <feinerer@logic.at>
309    
310            * R/source.R (Source): Add Length slot.
311    
312    2008-11-06  Ingo Feinerer  <feinerer@logic.at>
313    
314            * R/AAA.R: Unify duplicated .onLoad function.
315    
316    2008-11-03  Ingo Feinerer  <feinerer@logic.at>
317    
318            * DESCRIPTION (Suggests): Added Rmpi.
319    
320    2008-11-02  Ingo Feinerer  <feinerer@logic.at>
321    
322            * R/source.R (getElem): Fix 'no visible binding' warning.
323    
324            * man/WeightFunction.Rd: Fix signature.
325    
326    2008-08-03  Ingo Feinerer  <feinerer@logic.at>
327    
328            * R/weight.R: Introduce name abbreviations for weighting functions.
329    
330    2008-07-24  Ingo Feinerer  <feinerer@logic.at>
331    
332            * R/AAA.R (.onLoad, .Last): Start and stop MPI cluster.
333    
334            * R/cluster.R: Provide convenience functions for using a MPI
335            cluster.
336    
337            * R/termdocmatrix.R (TermDocMatrix): Use MPI cluster if
338            available.
339    
340            * R/textdoccol.R (tmIndex, tmFilter, tmMap): Use MPI cluster if
341            available.
342    
343    2008-07-17  Ingo Feinerer  <feinerer@logic.at>
344    
345            * R/textdoccol.R (lapply): Removed debug print out.
346    
347    2008-06-06  Ingo Feinerer  <h0125130@wu-wien.ac.at>
348    
349            * R/reader.R (readRCV1): Improved meta data extraction from
350            Reuters Corpus Volume 1 documents.
351    
352    2008-05-25  Ingo Feinerer  <h0125130@wu-wien.ac.at>
353    
354            * R/transform.R: Ensure that all mappings preserve multiline
355            structures.
356    
357    2008-05-24  Ingo Feinerer  <h0125130@wu-wien.ac.at>
358    
359            * R/filter.R: Every filter has now an attribute indicating whether
360            it sould be applied to document level (doclevel).
361    
362            * R/textdoccol.R (tmFilter): Set searchFullText as new default
363            filter.
364    
365    2008-04-23  Ingo Feinerer  <h0125130@wu-wien.ac.at>
366    
367            * R/transform.R (replacePatterns): Replaced removeWords by
368            replacePatterns. Suggested by Christian Buchta.
369    
370            * R/textdoccol.R (inspect): Improved formatting.
371    
372    2008-04-19  Ingo Feinerer  <h0125130@wu-wien.ac.at>
373    
374            * inst/CITATION: Updated JSS article information.
375    
376            * R/textdoccol.R (setAs): Added coerce method from list to
377            corpus.
378    
379            * R/meta.R (meta): Improved meta data handling.
380    
381    2008-03-21  Ingo Feinerer  <h0125130@wu-wien.ac.at>
382    
383            * R/textdoccol.R (materialize, tmMap): Improvements suggested by
384            Christian Buchta.
385    
386            * inst/CITATION: Added template to include JSS article reference.
387    
388    2008-03-12  Ingo Feinerer  <h0125130@wu-wien.ac.at>
389    
390            * R/textdoccol.R (tmMap): Introduced lazy mapping.
391    
392            * R/source.R: Added VectorSource.
393    
394    2008-02-23  Ingo Feinerer  <h0125130@wu-wien.ac.at>
395    
396            * man/: Language codes should be in ISO 639-1 format.
397    
398            * R/textdoccol.R (asPlain): Preserve local meta data.
399    
400    2008-01-31  Ingo Feinerer  <h0125130@wu-wien.ac.at>
401    
402            * R/textdoccol.R (writeCorpus): Function for writing a corpus
403            containing plain text documents to disk.
404    
405    2008-01-30  Ingo Feinerer  <h0125130@wu-wien.ac.at>
406    
407            * R/termdocmatrix.R (TermDocMatrix): Ensure that dimnames are
408            always set correctly.
409    
410            * R/textdoccol.R: Set load = TRUE as default for load on demand
411            since in most cases this is the wanted behaviour.
412    
413    2008-01-24  Ingo Feinerer  <h0125130@wu-wien.ac.at>
414    
415            * R/: Renamed TextDocCol to Corpus, and Corpus to Content.
416    
417            * DESCRIPTION: Updated Version to 0.3 due to core name changes.
418    
419    2008-01-22  Ingo Feinerer  <h0125130@wu-wien.ac.at>
420    
421            * R/meta.R (meta): New function for consistent access to meta data
422            of document collections, repositories, and texts.
423    
424    2008-01-21  Ingo Feinerer  <h0125130@wu-wien.ac.at>
425    
426            * R/: Better support for encodings.
427    
428    2008-01-13  Ingo Feinerer  <h0125130@wu-wien.ac.at>
429    
430            * R/textdoccol.R (TextDocCol): Fixed bug regarding default reader
431            selection when no reader argument is given.
432    
433    2008-01-05  Ingo Feinerer  <h0125130@wu-wien.ac.at>
434    
435            * R/source.R (CSVSource): Now uses read.csv instead of scan
436            internally.
437    
438    2008-01-02  Ingo Feinerer  <h0125130@wu-wien.ac.at>
439    
440            * R/reader.R (getReaders): Returns available reader functions.
441    
442            * R/termdocmatrix.R (TermDocMatrix): Set new modular constructor
443            as default.
444    
445    2007-12-02  Ingo Feinerer  <h0125130@wu-wien.ac.at>
446    
447            * R/stopwords.R (stopwords): Shortened code, removed codetools
448            variable warnings.
449    
450            * man/: Documentation for showMeta, added an example for tmMap.
451    
452            * inst/doc/tm.Rnw: Updated vignette, comments on MS word reader,
453            some minor typos fixed.
454    
455    2007-12-01  Ingo Feinerer  <h0125130@wu-wien.ac.at>
456    
457            * R/aobjects.R (showMeta): Added method for pretty printing a
458            text document's meta data.
459    
460    2007-11-29  Ingo Feinerer  <h0125130@wu-wien.ac.at>
461    
462            * R/textdoccol.R (TextDocCol): Better handling of empty
463            arguments.
464    
465            * NAMESPACE: Exported readDOC.
466    
467            * man/completeStems.Rd: Added an example.
468    
469    2007-11-18  Ingo Feinerer  <h0125130@wu-wien.ac.at>
470    
471            * R/stopwords.R (stopwords): Look up .dat files at every
472            call. Allows users to modify stopword .dat files interactively.
473    
474    2007-11-06  Ingo Feinerer  <h0125130@wu-wien.ac.at>
475    
476            * R/termdocmatrix.R (termFreq): Correct processing of empty
477            documents.
478    
479    2007-10-27  Ingo Feinerer  <h0125130@wu-wien.ac.at>
480    
481            * man/: Updated documentation.
482    
483    2007-10-21  Ingo Feinerer  <h0125130@wu-wien.ac.at>
484    
485            * R/complete.R (completeStems): Completes (heuristically) word
486            stems.
487    
488            * R/termdocmatrix.R (TermDocMatrix2): New modular
489            constructor.
490    
491            * NAMESPACE: Exported termFreq.
492    
493    2007-10-16  Ingo Feinerer  <h0125130@wu-wien.ac.at>
494    
495            * R/reader.R (readDOC): Added MS Word reader (using antiword).
496    
497    2007-10-14  Ingo Feinerer  <h0125130@wu-wien.ac.at>
498    
499            * R/weight.R: Weighting functions for TermDocMatrix.
500    
501    2007-10-13  Ingo Feinerer  <h0125130@wu-wien.ac.at>
502    
503            * R/termdocmatrix.R (dimnames, colnames, rownames): Wrapper
504            functions for accessing dimension, column, and row names.
505    
506            * R/plot.R (plot.TermDocMatrix): Plot correlations between terms.
507    
508    2007-09-11  Ingo Feinerer  <h0125130@wu-wien.ac.at>
509    
510            * man/removePunctuation.Rd: Added documentation. Function also exported to NAMESPACE.
511    
512    2007-08-28  Ingo Feinerer  <h0125130@wu-wien.ac.at>
513    
514            * R/fungen.R: Use S4 class for function generators instead of S3 attributes.
515    
516    2007-07-29  Ingo Feinerer  <h0125130@wu-wien.ac.at>
517    
518            * R/reader.R (readPDF): Removed manual checks for pdftotext and
519            pdfinfo. The system call gives a warning anyway.
520    
521    2007-07-28  Ingo Feinerer  <h0125130@wu-wien.ac.at>
522    
523            * R/textdoccol.R (asPlain): Conversion from
524            StructuredTextDocuments to PlainTextDocuments.
525    
526    2007-07-21  Ingo Feinerer  <h0125130@wu-wien.ac.at>
527    
528            * R/termdocmatrix.R: Added convenience methods ("[", nrow, ncol)
529            for accessing term-document matrices.
530    
531            * inst/doc/tm.Rnw: readPDF is only called if pdftotext and pdfinfo
532            are installed.
533    
534    2007-07-17  Ingo Feinerer  <h0125130@wu-wien.ac.at>
535    
536            * R/termdocmatrix.R (TermDocMatrix): Improved efficiency. Kudos to
537            Christian Buchta.
538    
539    2007-07-15  Ingo Feinerer  <h0125130@wu-wien.ac.at>
540    
541            * inst/doc/tm.Rnw: Update vignette (readPDF, readHTML, preprocessReut21578XML).
542    
543    2007-07-14  Ingo Feinerer  <h0125130@wu-wien.ac.at>
544    
545            * R/reader.R (readHTML): Added very simple HTML reader to obtain StructuredTextDocuments.
546    
547            * R/reader.R (readPDF): Added PDF reader.
548    
549    2007-07-13  Ingo Feinerer  <h0125130@wu-wien.ac.at>
550    
551            * DESCRIPTION: Moved proxy from Depends to Imports to avoid name clashes.
552    
553            * inst/stopwords/english.dat: Added the term "yes" to stopwords.
554    
555            * R/termdocmatrix.R (dim): dim function for TermDocMatrix.
556    
557            * R/preprocess.R (convertMboxEml): Accepts gzipped mboxes.
558    
559    2007-07-11  Ingo Feinerer  <h0125130@wu-wien.ac.at>
560    
561            * R/distmeasure.R (dissimilarity): Replaced dists call from
562            package cba by new dist call from package proxy.
563    
564    2007-07-10  Ingo Feinerer  <h0125130@wu-wien.ac.at>
565    
566            * inst/doc/tm.Rnw: Described removeSparseTerms and Dictionary.
567    
568    2007-06-21  Ingo Feinerer  <h0125130@wu-wien.ac.at>
569    
570            * R/termdocmatrix.R: require() uses the quietly option to suppress
571            loading messages.
572    
573    2007-06-12  Ingo Feinerer  <h0125130@wu-wien.ac.at>
574    
575            * R/dictionary.R: Added dictionary support.
576    
577    2007-06-07  Ingo Feinerer  <h0125130@wu-wien.ac.at>
578    
579            * R/aobjects.R: Added classes for Reuters21578 XML and RCV1
580            documents. This simplifies some functions, e.g., asPlain.
581    
582    2007-06-06  Ingo Feinerer  <h0125130@wu-wien.ac.at>
583    
584            * inst/doc/tm.Rnw: Fixed some typos in vignette.
585    
586    2007-06-03  Ingo Feinerer  <h0125130@wu-wien.ac.at>
587    
588            * R/textdoccol.R (replaceWords): Added method to replace a set of
589            words by a single word. Useful for synonyms.
590    
591    2007-05-22  Ingo Feinerer  <h0125130@wu-wien.ac.at>
592    
593            * man/TermDocMatrix.Rd: Fixed documentation on Data slot.
594    
595    2007-05-19  Ingo Feinerer  <h0125130@wu-wien.ac.at>
596    
597            * R/termdocmatrix.R (textvector): Small fix for dealing with empty
598            vectors. Thanks to Ariel Maguyon for his error report.
599            (removeSparseTerms): New function to remove columns from a
600            term-document matrix exceeding a sparse factor.
601    
602    2007-05-15  Ingo Feinerer  <h0125130@wu-wien.ac.at>
603    
604            * man/tmUpdate.Rd: Corrected documentation on readerControl parameter.
605    
606    2007-05-11  Ingo Feinerer  <h0125130@wu-wien.ac.at>
607    
608            * man/sFilter.Rd: Corrected documentation on statement format (use
609            '==' instead of '=').
610    
611    2007-05-08  Ingo Feinerer  <h0125130@wu-wien.ac.at>
612    
613            * R/aobjects.R (StructuredTextDocument): Inherits from
614            TextDocument.
615    
616    2007-05-04  Ingo Feinerer  <h0125130@wu-wien.ac.at>
617    
618            * R/termdocmatrix.R (findFreqTerms): Perform efficient computation
619            on sparse matrices as proposed by Martin Maechler.
620    
621    2007-04-27  Ingo Feinerer  <h0125130@wu-wien.ac.at>
622    
623            * R/textdoccol.R: Removed \code{dbDisconnect} calls since last
624            \pkg{filehash} version makes them deprecated.
625    
626    2007-04-22  Ingo Feinerer  <h0125130@wu-wien.ac.at>
627    
628            * R/termdocmatrix.R (textvector): Stemming is now performed before
629            erasing stopwords.
630            (weightMatrix): Adapted to handle sparse matrices.
631            (TermDocMatrix): Sparse matrix is now efficiently built by
632            direct stepwise insertion of row values into it.
633    
634    2007-04-21  Ingo Feinerer  <h0125130@wu-wien.ac.at>
635    
636            * DESCRIPTION: Replaced \pkg{filehashSQLite} with \pkg{filehash}
637            due to ongoing problems. For our purposes the latter is as useful
638            as the replaced package.
639    
640    2007-04-20  Ingo Feinerer  <h0125130@wu-wien.ac.at>
641    
642            * man/TextDocCol.Rd: Replaced \code{readPlain} with \code{object@DefaultReader}.
643    
644            * man/TermDocMatrix.Rd: Remove deprecated \code{language} argument.
645    
646    2007-04-15  Ingo Feinerer  <h0125130@wu-wien.ac.at>
647    
648            * R/resolve.R (resolveISOCode): Added ISO 639-1 codes for
649            languages with available stopwords.
650    
651    2007-04-14  Ingo Feinerer  <h0125130@wu-wien.ac.at>
652    
653            * inst/doc/tm.Rnw: Minor corrections in the vignette.
654    
655    2007-04-11  Ingo Feinerer  <h0125130@wu-wien.ac.at>
656    
657            * DESCRIPTION: Update to version 0.2, since a lot of new features
658            have been integrated.
659    
660            * inst/stopwords: Updated existing stopwords and added stopwords
661            for various other languages.
662    
663    2007-04-10  Ingo Feinerer  <h0125130@wu-wien.ac.at>
664    
665            * man/: Updated documentation.
666    
667            * Work/testDb.R: Script to test database stuff.
668    
669            * R/: Fixed various database related bugs. Seems to be rather
670            useable now, i.e., consider as alpha status for now.
671    
672    2007-04-08  Ingo Feinerer  <h0125130@wu-wien.ac.at>
673    
674            * R/: Fixed some bugs related to database support.
675    
676    2007-04-07  Ingo Feinerer  <h0125130@wu-wien.ac.at>
677    
678            * man/: Added a lot of examples to the manuals.
679    
680    2007-04-05  Ingo Feinerer  <h0125130@wu-wien.ac.at>
681    
682            * man/: Updated parts of the documentation.
683    
684            * R/textdoccol.R (asPlain): Added conversion from newsgroup
685            documents to plain text documents.
686    
687    2007-04-01  Ingo Feinerer  <h0125130@wu-wien.ac.at>
688    
689            * R/textdoccol.R: Finished experimental database support. Not yet
690            intensively tested.
691    
692            * R/source.R: Now each source has a default reader.
693    
694            * R/reader.R: \code{FunctionGenerator} is now an attribute, not a
695            class anymore.
696    
697            * R/plaintextdoc.R: Custom show method for plain text documents.
698    
699            * R/aobjects.R: Added a class for structured text documents.
700    
701            * R/reader.R: Replaced remaining \code{parser} occurrences with
702            \code{reader}.
703    
704            * R/textdoccol.R (summary): Indent tags.
705    
706            * R/textdoccol.R (removePunctuation): Transform method to remove
707            punctuation marks.
708    
709    2007-03-21  Ingo Feinerer  <h0125130@wu-wien.ac.at>
710    
711            * R/textdoccol.R (sFilter): Simplified sFilter significantly by
712            using prescindMeta().
713    
714    2007-03-18  Ingo Feinerer  <h0125130@wu-wien.ac.at>
715    
716            * R/textdoccol.R: Improved database support.
717    
718    2007-03-16  Ingo Feinerer  <h0125130@wu-wien.ac.at>
719    
720            * R/termdocmatrix.R (TermDocMatrix): Uses sparse matrices.
721    
722            * R/resolve.R (resolveISOcode): Extracts the language from a ISO
723            language code.
724    
725            * R/textdoccol.R (TextDocCol): Refactored several parser arguments
726            into parserControl argument.
727    
728            * R/aobjects.R (TextDocument): Introduced the "Language" slot.
729    
730    2007-03-14  Ingo Feinerer  <h0125130@wu-wien.ac.at>
731    
732            * Work/tmDataSetup.R: The datasets acq and crude can now be
733            created on the fly.
734    
735            * R/stopwords.R: Introduced a function returning the stopwords for
736            a given language (English, German and French at the moment)
737    
738            * R/textdoccol.R (stemDoc): Stemming uses Rstem if available,
739            otherwise falls back to Snowball package.
740    
741    2007-01-30  Ingo Feinerer  <h0125130@wu-wien.ac.at>
742    
743            * man/dissimilarity-methods.Rd: Make clear that any method offered
744            by "dists" from package "cba" can be used.
745    
746  2007-01-22  Ingo Feinerer  <h0125130@wu-wien.ac.at>  2007-01-22  Ingo Feinerer  <h0125130@wu-wien.ac.at>
747    
748            * inst/doc/tm.Rnw: Fixed quotes-appearing-as-boxes-bug according
749            to Kurt's latex suggestion. Removed points and underscores in
750            variable names for consistent naming.
751    
752          * DESCRIPTION: Update to version 0.1-2.          * DESCRIPTION: Update to version 0.1-2.
753    
754          * man/TextRepository.Rd: Fixed bug in documentation.          * man/TextRepository.Rd: Fixed bug in documentation.

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