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trunk/tm/ChangeLog revision 719, Sun Mar 18 09:24:47 2007 UTC pkg/ChangeLog revision 1080, Thu Jun 17 13:47:05 2010 UTC
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1    2010-06-17  Ingo Feinerer  <feinerer@logic.at>
2    
3            * R/matrix.R (TermDocumentMatrix): If a dictionary is given do not
4            remove terms not occurring in the corpus anymore.
5    
6    2010-06-02  Ingo Feinerer  <feinerer@logic.at>
7    
8            * R/plot.R (Zipf_plot, Heaps_plot): Plotting functions for Zipf's
9            and Heaps' law.
10    
11    2010-05-18  Ingo Feinerer  <feinerer@logic.at>
12    
13            * R/corpus.R (Corpus, PCorpus): Use element names as IDs if
14            provided by a source.
15    
16    2010-04-09  Ingo Feinerer  <feinerer@logic.at>
17    
18            * R/source.R (.Source): Provide document names.
19    
20    2010-04-07  Ingo Feinerer  <feinerer@logic.at>
21    
22            * R/meta.R (`content_or_meta`): Utility function.
23    
24    2010-03-19  Ingo Feinerer  <feinerer@logic.at>
25    
26            * R/reader.R (readReut21578XML, readReut21578XMLasPlain): Extract
27            TOPICS, LEWISSPLIT, CGISPLIT, and OLDID meta tags.
28    
29    2010-03-03  Ingo Feinerer  <feinerer@logic.at>
30    
31            * R/weight.R (weightTfIdf): Added normalization option.
32    
33            * man/tm_tag_score.Rd: Add General Inquirer example for sentiment
34            analysis.
35    
36    2010-02-25  Ingo Feinerer  <feinerer@logic.at>
37    
38            * R/score.R (tm_tag_score): Compute a score from the number of
39            tags matching in a document.
40    
41    2010-02-18  Ingo Feinerer  <feinerer@logic.at>
42    
43            * R/complete.R (stemCompletion): New completion heuristics.
44    
45    2010-02-17  Ingo Feinerer  <feinerer@logic.at>
46    
47            * R/plot.R (plot.TermDocumentMatrix): Memory improvements.
48    
49    2010-02-06  Ingo Feinerer  <feinerer@logic.at>
50    
51            * DESCRIPTION (Depends): Depend on R (>= 2.10.0) to ensure that
52            setOldClass(c(..., "list")) works.
53    
54    2010-01-22  Ingo Feinerer  <feinerer@logic.at>
55    
56            * R/transform.R (stemDocument.character): In case input is a
57            simple character just delegate to the default Snowball stemmer.
58    
59    2010-01-15  Ingo Feinerer  <feinerer@logic.at>
60    
61            * R/reader.R (readReut21578XML, readRCV1): Extract more meta
62            data.
63    
64    2010-01-12  Ingo Feinerer  <feinerer@logic.at>
65    
66            * R/doc.R (`Content<-`): Be careful with names attribute.
67    
68    2010-01-07  Stefan Theussl  <stefan.theussl@wu.ac.at>
69    
70            * R/source.R (DirSource): Improved implementation especially when
71            handling many (> 1M) files.
72    
73    2009-12-22  Ingo Feinerer  <feinerer@logic.at>
74    
75            * R/source.R (getElem.URISource): Use encoding argument.
76    
77    2009-12-11  Ingo Feinerer  <feinerer@logic.at>
78    
79            * R/doc.R (setOldClass): Register S3 document classes to be
80            recognized by S4 methods.
81    
82    2009-11-25  Ingo Feinerer  <feinerer@logic.at>
83    
84            * R/matrix.R (termFreq): Add option to remove punctuation
85            characters.
86    
87    2009-11-19  Ingo Feinerer  <feinerer@logic.at>
88    
89            * R/matrix.R (c.TermDocumentMatrix): Added combine method for
90            merging multiple term-document matrices.
91    
92    2009-11-17  Ingo Feinerer  <feinerer@logic.at>
93    
94            * R/corpus.R (setOldClass): Register S3 corpus classes to be
95            recognized by S4 methods.
96    
97            * man/plot.Rd: Use \dontrun{} in \examples{} section in the hope
98            that CRAN Mac OS X builds do not fail any longer.
99    
100    2009-11-15  Ingo Feinerer  <feinerer@logic.at>
101    
102            * R/matrix.R (tokenize): Use scan(..., what = "character") instead
103            of RWeka:AlphabeticTokenizer() as default.
104    
105    2009-11-14  Ingo Feinerer  <feinerer@logic.at>
106    
107            * R/transform.R (removeWords.PlainTextDocument): Fix bug which
108            caused words at the beginning or the end of a line not to be removed. Do
109            not delete whitespace anymore.
110    
111    2009-11-12  Ingo Feinerer  <feinerer@logic.at>
112    
113            * R/source.R (DirSource): Default to working directory if no path
114            is specified.
115    
116    2009-11-11  Ingo Feinerer  <feinerer@logic.at>
117    
118            * R/source.R (DirSource): Stop on empty directories.
119    
120    2009-11-07  Ingo Feinerer  <feinerer@logic.at>
121    
122            * R/matrix.R (TermDocumentMatrix): Avoid prefixes originating from
123            named documents.
124    
125    2009-10-21  Ingo Feinerer  <feinerer@logic.at>
126    
127            * R/transform.R (removeWords): Improve regular expressions.
128    
129    2009-10-19  Ingo Feinerer  <feinerer@logic.at>
130    
131            * R/meta.R (DublinCore): Allow lower case tags.
132    
133    2009-10-09  Ingo Feinerer  <feinerer@logic.at>
134    
135            * R/source.R (GmaneSource, ReutersSource): Use xmlChildren(x)
136            instead of x$children.
137    
138    2009-09-15  Ingo Feinerer  <feinerer@logic.at>
139    
140            * R/preprocess.R (preprocessReut21578XML): Fix generated file names.
141    
142    2009-09-06  Ingo Feinerer  <feinerer@logic.at>
143    
144            * R/: Use S3 instead of S4 class system.
145    
146    2009-08-11  Ingo Feinerer  <feinerer@logic.at>
147    
148            * R/reader.R (readMail): Moved to tm.plugin.mail package.
149    
150    2009-07-04  Ingo Feinerer  <feinerer@logic.at>
151    
152            * R/reader.R (readNewsgroup): Rename to readMail as newsgroup
153            postings are basically e-mails with some extra headers.
154    
155    2009-07-03  Ingo Feinerer  <feinerer@logic.at>
156    
157            * R/transform.R: Move convertMboxEml, removeCitation,
158            removeMultipart, and removeSignature to the tm.plugin.mail package
159            since they are mainly utility functions (for handling e-mails) and
160            not very framework specific.
161    
162    2009-06-28  Ingo Feinerer  <feinerer@logic.at>
163    
164            * man/: Fix documentation.
165    
166    2009-06-26  Ingo Feinerer  <feinerer@logic.at>
167    
168            * R/reader.R (readReut21578XMLasPlain): New reader which returns a
169            plain text document instead of an XML document for texts of the
170            Reuters-21578 dataset.
171    
172            * R/sparse.R: Removed since the slam package is now available on
173            CRAN.
174    
175            * DESCRIPTION (Depends): Add slam package.
176    
177    2009-06-17  Ingo Feinerer  <feinerer@logic.at>
178    
179            * R/transform.R (stemDoc): Fix character(0) handling.
180    
181    2009-06-12  Ingo Feinerer  <feinerer@logic.at>
182    
183            * R/doc.R (show): Pretty print.
184    
185    2009-05-27  Ingo Feinerer  <feinerer@logic.at>
186    
187            * R/matrix.R (print.TermDocumentMatrix): Handle empty matrices
188            gracefully.
189    
190    2009-05-13  Ingo Feinerer  <feinerer@logic.at>
191    
192            * R/corpus.R: Make corpus virtual. Implement corpus with standard
193            and permanent storage semantics.
194    
195            * DESCRIPTION: New major release. A *lot* of improvements.
196    
197    2009-05-04   Ingo Feinerer <feinerer@logic.at>
198    
199            * NAMESPACE: Export some simple_triplet_matrix functions.
200    
201    2009-04-28   Ingo Feinerer <feinerer@logic.at>
202    
203            * R/weight.R: Adapt tf-idf to new matrix format.
204    
205    2009-04-27  Ingo Feinerer  <feinerer@logic.at>
206    
207            * R/matrix.R: Create two distinct classes for term-document and
208            document-term matrices.
209    
210    2009-04-26  Ingo Feinerer  <feinerer@logic.at>
211    
212            * R/termdocmatrix.R: No longer use Matrix package. This reduces
213            package start-up time significantly.
214    
215    2009-04-11  Ingo Feinerer  <feinerer@logic.at>
216    
217            * inst/doc/tm.Rnw: Fix code/documentation mismatch.
218    
219    2009-04-04  Ingo Feinerer  <feinerer@logic.at>
220    
221            * R/transform.R (tmReduce): Combine multiple maps into one
222            transformation.
223    
224    2009-04-03  Ingo Feinerer  <feinerer@logic.at>
225    
226            * R/weight.R: Remove weightLogical since it does not return a
227            dgCMatrix.
228    
229            * R/termdocmatrix.R: Removed TermDocMatrix. Use DocumentTermMatrix
230            or TermDocumentMatrix instead.
231    
232    2009-03-28  Ingo Feinerer  <feinerer@logic.at>
233    
234            * inst/doc/extensions.Rnw: Finished vignette.
235    
236    2009-03-27  Ingo Feinerer  <feinerer@logic.at>
237    
238            * R/termdocmatrix.R: Start to work on new TermDocumentMatrix and
239            DocumentTermMatrix representations.
240    
241    2009-03-23  Ingo Feinerer  <feinerer@logic.at>
242    
243            * R/reader.R (readXML): New reader for arbitrary XML files.
244    
245    2009-03-22  Ingo Feinerer  <feinerer@logic.at>
246    
247            * R/source.R (CSVSource): Defunct (use DataframeSource instead).
248            (XMLSource): New XMLSource class for arbitrary XML files.
249            (Source): New slot Vectorized.
250    
251    2009-03-21  Ingo Feinerer  <feinerer@logic.at>
252    
253            * R/reader.R (readTabular): Experimental reader for tabular data
254            structures which can be customized via user-defined mappings.
255    
256            * R/reader.R: Always use UTC time zone.
257    
258            * R/AAA.R (.onLoad): No longer try to start a MPI cluster.
259    
260    2009-03-20  Ingo Feinerer  <feinerer@logic.at>
261    
262            * R/reader.R (readDOC): Options can be passed over to antiword.
263    
264            * R/reader.R (readPDF): Options can be passed over to pdfinfo and
265            pdftotext.
266    
267    2009-03-10  Ingo Feinerer  <feinerer@logic.at>
268    
269            * R/source.R (DirSource): Add pattern and ignore.case arguments
270            which are internally passed over to list.files().
271    
272    2009-03-02  Ingo Feinerer  <feinerer@logic.at>
273    
274            * inst/doc/tm.Rnw: Suppress pointless loading message.
275    
276    2009-01-29  Ingo Feinerer  <feinerer@logic.at>
277    
278            * DESCRIPTION: Speed up package loading (via moving packages not
279            strictly necessary for normal operation to Suggests instead of
280            Depends).
281    
282    2009-01-08  Ingo Feinerer  <feinerer@logic.at>
283    
284            * R/reader.R (readNewsgroup): The date format is now configurable.
285    
286    2008-12-20  Ingo Feinerer  <feinerer@logic.at>
287    
288            * R/preprocess.R (convertMboxEml): Fix off-by-one error.
289    
290    2008-12-16  Ingo Feinerer  <feinerer@logic.at>
291    
292            * R/termdocmatrix.R (TermDocMatrix): Sort row indices.
293    
294    2008-12-06  Ingo Feinerer  <feinerer@logic.at>
295    
296            * R/source.R (DataframeSource): New source class for data frames.
297    
298            * R/source.R: Fixed non-standard call evaluation.
299    
300    2008-11-29  Ingo Feinerer  <feinerer@logic.at>
301    
302            * R/source.R (URISource): New source class for a single document.
303    
304    2008-11-27  Ingo Feinerer  <feinerer@logic.at>
305    
306            * R/source.R: Refactoring.
307    
308    2008-11-25  Ingo Feinerer  <feinerer@logic.at>
309    
310            * R/AAA.R (.onLoad, .Last): Use tryCatch() to handle misconfigured
311            Rmpi installations more gracefully.
312    
313    2008-11-08  Ingo Feinerer  <feinerer@logic.at>
314    
315            * R/source.R (Source): Add Length slot.
316    
317    2008-11-06  Ingo Feinerer  <feinerer@logic.at>
318    
319            * R/AAA.R: Unify duplicated .onLoad function.
320    
321    2008-11-03  Ingo Feinerer  <feinerer@logic.at>
322    
323            * DESCRIPTION (Suggests): Added Rmpi.
324    
325    2008-11-02  Ingo Feinerer  <feinerer@logic.at>
326    
327            * R/source.R (getElem): Fix 'no visible binding' warning.
328    
329            * man/WeightFunction.Rd: Fix signature.
330    
331    2008-08-03  Ingo Feinerer  <feinerer@logic.at>
332    
333            * R/weight.R: Introduce name abbreviations for weighting functions.
334    
335    2008-07-24  Ingo Feinerer  <feinerer@logic.at>
336    
337            * R/AAA.R (.onLoad, .Last): Start and stop MPI cluster.
338    
339            * R/cluster.R: Provide convenience functions for using a MPI
340            cluster.
341    
342            * R/termdocmatrix.R (TermDocMatrix): Use MPI cluster if
343            available.
344    
345            * R/textdoccol.R (tmIndex, tmFilter, tmMap): Use MPI cluster if
346            available.
347    
348    2008-07-17  Ingo Feinerer  <feinerer@logic.at>
349    
350            * R/textdoccol.R (lapply): Removed debug print out.
351    
352    2008-06-06  Ingo Feinerer  <h0125130@wu-wien.ac.at>
353    
354            * R/reader.R (readRCV1): Improved meta data extraction from
355            Reuters Corpus Volume 1 documents.
356    
357    2008-05-25  Ingo Feinerer  <h0125130@wu-wien.ac.at>
358    
359            * R/transform.R: Ensure that all mappings preserve multiline
360            structures.
361    
362    2008-05-24  Ingo Feinerer  <h0125130@wu-wien.ac.at>
363    
364            * R/filter.R: Every filter has now an attribute indicating whether
365            it sould be applied to document level (doclevel).
366    
367            * R/textdoccol.R (tmFilter): Set searchFullText as new default
368            filter.
369    
370    2008-04-23  Ingo Feinerer  <h0125130@wu-wien.ac.at>
371    
372            * R/transform.R (replacePatterns): Replaced removeWords by
373            replacePatterns. Suggested by Christian Buchta.
374    
375            * R/textdoccol.R (inspect): Improved formatting.
376    
377    2008-04-19  Ingo Feinerer  <h0125130@wu-wien.ac.at>
378    
379            * inst/CITATION: Updated JSS article information.
380    
381            * R/textdoccol.R (setAs): Added coerce method from list to
382            corpus.
383    
384            * R/meta.R (meta): Improved meta data handling.
385    
386    2008-03-21  Ingo Feinerer  <h0125130@wu-wien.ac.at>
387    
388            * R/textdoccol.R (materialize, tmMap): Improvements suggested by
389            Christian Buchta.
390    
391            * inst/CITATION: Added template to include JSS article reference.
392    
393    2008-03-12  Ingo Feinerer  <h0125130@wu-wien.ac.at>
394    
395            * R/textdoccol.R (tmMap): Introduced lazy mapping.
396    
397            * R/source.R: Added VectorSource.
398    
399    2008-02-23  Ingo Feinerer  <h0125130@wu-wien.ac.at>
400    
401            * man/: Language codes should be in ISO 639-1 format.
402    
403            * R/textdoccol.R (asPlain): Preserve local meta data.
404    
405    2008-01-31  Ingo Feinerer  <h0125130@wu-wien.ac.at>
406    
407            * R/textdoccol.R (writeCorpus): Function for writing a corpus
408            containing plain text documents to disk.
409    
410    2008-01-30  Ingo Feinerer  <h0125130@wu-wien.ac.at>
411    
412            * R/termdocmatrix.R (TermDocMatrix): Ensure that dimnames are
413            always set correctly.
414    
415            * R/textdoccol.R: Set load = TRUE as default for load on demand
416            since in most cases this is the wanted behaviour.
417    
418    2008-01-24  Ingo Feinerer  <h0125130@wu-wien.ac.at>
419    
420            * R/: Renamed TextDocCol to Corpus, and Corpus to Content.
421    
422            * DESCRIPTION: Updated Version to 0.3 due to core name changes.
423    
424    2008-01-22  Ingo Feinerer  <h0125130@wu-wien.ac.at>
425    
426            * R/meta.R (meta): New function for consistent access to meta data
427            of document collections, repositories, and texts.
428    
429    2008-01-21  Ingo Feinerer  <h0125130@wu-wien.ac.at>
430    
431            * R/: Better support for encodings.
432    
433    2008-01-13  Ingo Feinerer  <h0125130@wu-wien.ac.at>
434    
435            * R/textdoccol.R (TextDocCol): Fixed bug regarding default reader
436            selection when no reader argument is given.
437    
438    2008-01-05  Ingo Feinerer  <h0125130@wu-wien.ac.at>
439    
440            * R/source.R (CSVSource): Now uses read.csv instead of scan
441            internally.
442    
443    2008-01-02  Ingo Feinerer  <h0125130@wu-wien.ac.at>
444    
445            * R/reader.R (getReaders): Returns available reader functions.
446    
447            * R/termdocmatrix.R (TermDocMatrix): Set new modular constructor
448            as default.
449    
450    2007-12-02  Ingo Feinerer  <h0125130@wu-wien.ac.at>
451    
452            * R/stopwords.R (stopwords): Shortened code, removed codetools
453            variable warnings.
454    
455            * man/: Documentation for showMeta, added an example for tmMap.
456    
457            * inst/doc/tm.Rnw: Updated vignette, comments on MS word reader,
458            some minor typos fixed.
459    
460    2007-12-01  Ingo Feinerer  <h0125130@wu-wien.ac.at>
461    
462            * R/aobjects.R (showMeta): Added method for pretty printing a
463            text document's meta data.
464    
465    2007-11-29  Ingo Feinerer  <h0125130@wu-wien.ac.at>
466    
467            * R/textdoccol.R (TextDocCol): Better handling of empty
468            arguments.
469    
470            * NAMESPACE: Exported readDOC.
471    
472            * man/completeStems.Rd: Added an example.
473    
474    2007-11-18  Ingo Feinerer  <h0125130@wu-wien.ac.at>
475    
476            * R/stopwords.R (stopwords): Look up .dat files at every
477            call. Allows users to modify stopword .dat files interactively.
478    
479    2007-11-06  Ingo Feinerer  <h0125130@wu-wien.ac.at>
480    
481            * R/termdocmatrix.R (termFreq): Correct processing of empty
482            documents.
483    
484    2007-10-27  Ingo Feinerer  <h0125130@wu-wien.ac.at>
485    
486            * man/: Updated documentation.
487    
488    2007-10-21  Ingo Feinerer  <h0125130@wu-wien.ac.at>
489    
490            * R/complete.R (completeStems): Completes (heuristically) word
491            stems.
492    
493            * R/termdocmatrix.R (TermDocMatrix2): New modular
494            constructor.
495    
496            * NAMESPACE: Exported termFreq.
497    
498    2007-10-16  Ingo Feinerer  <h0125130@wu-wien.ac.at>
499    
500            * R/reader.R (readDOC): Added MS Word reader (using antiword).
501    
502    2007-10-14  Ingo Feinerer  <h0125130@wu-wien.ac.at>
503    
504            * R/weight.R: Weighting functions for TermDocMatrix.
505    
506    2007-10-13  Ingo Feinerer  <h0125130@wu-wien.ac.at>
507    
508            * R/termdocmatrix.R (dimnames, colnames, rownames): Wrapper
509            functions for accessing dimension, column, and row names.
510    
511            * R/plot.R (plot.TermDocMatrix): Plot correlations between terms.
512    
513    2007-09-11  Ingo Feinerer  <h0125130@wu-wien.ac.at>
514    
515            * man/removePunctuation.Rd: Added documentation. Function also exported to NAMESPACE.
516    
517    2007-08-28  Ingo Feinerer  <h0125130@wu-wien.ac.at>
518    
519            * R/fungen.R: Use S4 class for function generators instead of S3 attributes.
520    
521    2007-07-29  Ingo Feinerer  <h0125130@wu-wien.ac.at>
522    
523            * R/reader.R (readPDF): Removed manual checks for pdftotext and
524            pdfinfo. The system call gives a warning anyway.
525    
526    2007-07-28  Ingo Feinerer  <h0125130@wu-wien.ac.at>
527    
528            * R/textdoccol.R (asPlain): Conversion from
529            StructuredTextDocuments to PlainTextDocuments.
530    
531    2007-07-21  Ingo Feinerer  <h0125130@wu-wien.ac.at>
532    
533            * R/termdocmatrix.R: Added convenience methods ("[", nrow, ncol)
534            for accessing term-document matrices.
535    
536            * inst/doc/tm.Rnw: readPDF is only called if pdftotext and pdfinfo
537            are installed.
538    
539    2007-07-17  Ingo Feinerer  <h0125130@wu-wien.ac.at>
540    
541            * R/termdocmatrix.R (TermDocMatrix): Improved efficiency. Kudos to
542            Christian Buchta.
543    
544    2007-07-15  Ingo Feinerer  <h0125130@wu-wien.ac.at>
545    
546            * inst/doc/tm.Rnw: Update vignette (readPDF, readHTML, preprocessReut21578XML).
547    
548    2007-07-14  Ingo Feinerer  <h0125130@wu-wien.ac.at>
549    
550            * R/reader.R (readHTML): Added very simple HTML reader to obtain StructuredTextDocuments.
551    
552            * R/reader.R (readPDF): Added PDF reader.
553    
554    2007-07-13  Ingo Feinerer  <h0125130@wu-wien.ac.at>
555    
556            * DESCRIPTION: Moved proxy from Depends to Imports to avoid name clashes.
557    
558            * inst/stopwords/english.dat: Added the term "yes" to stopwords.
559    
560            * R/termdocmatrix.R (dim): dim function for TermDocMatrix.
561    
562            * R/preprocess.R (convertMboxEml): Accepts gzipped mboxes.
563    
564    2007-07-11  Ingo Feinerer  <h0125130@wu-wien.ac.at>
565    
566            * R/distmeasure.R (dissimilarity): Replaced dists call from
567            package cba by new dist call from package proxy.
568    
569    2007-07-10  Ingo Feinerer  <h0125130@wu-wien.ac.at>
570    
571            * inst/doc/tm.Rnw: Described removeSparseTerms and Dictionary.
572    
573    2007-06-21  Ingo Feinerer  <h0125130@wu-wien.ac.at>
574    
575            * R/termdocmatrix.R: require() uses the quietly option to suppress
576            loading messages.
577    
578    2007-06-12  Ingo Feinerer  <h0125130@wu-wien.ac.at>
579    
580            * R/dictionary.R: Added dictionary support.
581    
582    2007-06-07  Ingo Feinerer  <h0125130@wu-wien.ac.at>
583    
584            * R/aobjects.R: Added classes for Reuters21578 XML and RCV1
585            documents. This simplifies some functions, e.g., asPlain.
586    
587    2007-06-06  Ingo Feinerer  <h0125130@wu-wien.ac.at>
588    
589            * inst/doc/tm.Rnw: Fixed some typos in vignette.
590    
591    2007-06-03  Ingo Feinerer  <h0125130@wu-wien.ac.at>
592    
593            * R/textdoccol.R (replaceWords): Added method to replace a set of
594            words by a single word. Useful for synonyms.
595    
596    2007-05-22  Ingo Feinerer  <h0125130@wu-wien.ac.at>
597    
598            * man/TermDocMatrix.Rd: Fixed documentation on Data slot.
599    
600    2007-05-19  Ingo Feinerer  <h0125130@wu-wien.ac.at>
601    
602            * R/termdocmatrix.R (textvector): Small fix for dealing with empty
603            vectors. Thanks to Ariel Maguyon for his error report.
604            (removeSparseTerms): New function to remove columns from a
605            term-document matrix exceeding a sparse factor.
606    
607    2007-05-15  Ingo Feinerer  <h0125130@wu-wien.ac.at>
608    
609            * man/tmUpdate.Rd: Corrected documentation on readerControl parameter.
610    
611    2007-05-11  Ingo Feinerer  <h0125130@wu-wien.ac.at>
612    
613            * man/sFilter.Rd: Corrected documentation on statement format (use
614            '==' instead of '=').
615    
616    2007-05-08  Ingo Feinerer  <h0125130@wu-wien.ac.at>
617    
618            * R/aobjects.R (StructuredTextDocument): Inherits from
619            TextDocument.
620    
621    2007-05-04  Ingo Feinerer  <h0125130@wu-wien.ac.at>
622    
623            * R/termdocmatrix.R (findFreqTerms): Perform efficient computation
624            on sparse matrices as proposed by Martin Maechler.
625    
626    2007-04-27  Ingo Feinerer  <h0125130@wu-wien.ac.at>
627    
628            * R/textdoccol.R: Removed \code{dbDisconnect} calls since last
629            \pkg{filehash} version makes them deprecated.
630    
631    2007-04-22  Ingo Feinerer  <h0125130@wu-wien.ac.at>
632    
633            * R/termdocmatrix.R (textvector): Stemming is now performed before
634            erasing stopwords.
635            (weightMatrix): Adapted to handle sparse matrices.
636            (TermDocMatrix): Sparse matrix is now efficiently built by
637            direct stepwise insertion of row values into it.
638    
639    2007-04-21  Ingo Feinerer  <h0125130@wu-wien.ac.at>
640    
641            * DESCRIPTION: Replaced \pkg{filehashSQLite} with \pkg{filehash}
642            due to ongoing problems. For our purposes the latter is as useful
643            as the replaced package.
644    
645    2007-04-20  Ingo Feinerer  <h0125130@wu-wien.ac.at>
646    
647            * man/TextDocCol.Rd: Replaced \code{readPlain} with \code{object@DefaultReader}.
648    
649            * man/TermDocMatrix.Rd: Remove deprecated \code{language} argument.
650    
651    2007-04-15  Ingo Feinerer  <h0125130@wu-wien.ac.at>
652    
653            * R/resolve.R (resolveISOCode): Added ISO 639-1 codes for
654            languages with available stopwords.
655    
656    2007-04-14  Ingo Feinerer  <h0125130@wu-wien.ac.at>
657    
658            * inst/doc/tm.Rnw: Minor corrections in the vignette.
659    
660    2007-04-11  Ingo Feinerer  <h0125130@wu-wien.ac.at>
661    
662            * DESCRIPTION: Update to version 0.2, since a lot of new features
663            have been integrated.
664    
665            * inst/stopwords: Updated existing stopwords and added stopwords
666            for various other languages.
667    
668    2007-04-10  Ingo Feinerer  <h0125130@wu-wien.ac.at>
669    
670            * man/: Updated documentation.
671    
672            * Work/testDb.R: Script to test database stuff.
673    
674            * R/: Fixed various database related bugs. Seems to be rather
675            useable now, i.e., consider as alpha status for now.
676    
677    2007-04-08  Ingo Feinerer  <h0125130@wu-wien.ac.at>
678    
679            * R/: Fixed some bugs related to database support.
680    
681    2007-04-07  Ingo Feinerer  <h0125130@wu-wien.ac.at>
682    
683            * man/: Added a lot of examples to the manuals.
684    
685    2007-04-05  Ingo Feinerer  <h0125130@wu-wien.ac.at>
686    
687            * man/: Updated parts of the documentation.
688    
689            * R/textdoccol.R (asPlain): Added conversion from newsgroup
690            documents to plain text documents.
691    
692    2007-04-01  Ingo Feinerer  <h0125130@wu-wien.ac.at>
693    
694            * R/textdoccol.R: Finished experimental database support. Not yet
695            intensively tested.
696    
697            * R/source.R: Now each source has a default reader.
698    
699            * R/reader.R: \code{FunctionGenerator} is now an attribute, not a
700            class anymore.
701    
702            * R/plaintextdoc.R: Custom show method for plain text documents.
703    
704            * R/aobjects.R: Added a class for structured text documents.
705    
706            * R/reader.R: Replaced remaining \code{parser} occurrences with
707            \code{reader}.
708    
709            * R/textdoccol.R (summary): Indent tags.
710    
711            * R/textdoccol.R (removePunctuation): Transform method to remove
712            punctuation marks.
713    
714    2007-03-21  Ingo Feinerer  <h0125130@wu-wien.ac.at>
715    
716            * R/textdoccol.R (sFilter): Simplified sFilter significantly by
717            using prescindMeta().
718    
719  2007-03-18  Ingo Feinerer  <h0125130@wu-wien.ac.at>  2007-03-18  Ingo Feinerer  <h0125130@wu-wien.ac.at>
720    
721          * R/textdoccol.R: Improved database support.          * R/textdoccol.R: Improved database support.

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