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trunk/tm/ChangeLog revision 719, Sun Mar 18 09:24:47 2007 UTC pkg/ChangeLog revision 1161, Wed Dec 7 06:10:32 2011 UTC
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1    2011-12-07  Ingo Feinerer  <feinerer@logic.at>
2    
3            * R/transform.R (removePunctuation): Add option to preserve
4            intra-word dashes.
5    
6    2011-12-06  Ingo Feinerer  <feinerer@logic.at>
7    
8            * R/matrix.R (termFreq): Allow reordering of control option
9            processing.
10    
11    2011-11-17  Ingo Feinerer  <feinerer@logic.at>
12    
13            * R/reader.R (readPDF): Use tools:::pdf_info() instead of external
14            pdfinfo tool.
15    
16            * inst/stopwords/SMART.dat: Add SMART information retrieval system
17            stopwords (which are also used by the MC toolkit).
18    
19            * R/matrix (termFreq): Allow local option \code{bounds$local} to
20            restrict how often a term may appear in each document (generalizes
21            \code{minDocFreq}). Similarly the local option \code{wordLenghts}
22            for word length bounds (generalizes \code{minWordLength}).
23    
24            * R/matrix.R (TermDocumentMatrix.VCorpus): New global option
25            \code{bounds$global} for restricting how often a term is allowed
26            to appear in different documents.
27    
28            * R/matrix.R (TermDocumentMatrix.VCorpus): Distinguish between
29            local options delegated internally to termFreq() and global
30            options which are processed by the term-document matrix
31            constructor itself.
32    
33    2011-11-15  Ingo Feinerer  <feinerer@logic.at>
34    
35            * man/getTokenizers.Rd: Document getTokenizers().
36    
37            * man/tokenizer.Rd: Document MC_tokenizer() and scan_tokenizer().
38    
39    2011-11-04  Ingo Feinerer  <feinerer@logic.at>
40    
41            * man/matrix.Rd: Document as.TermDocumentMatrix.term_frequency.
42    
43            * man/combine.Rd: Document c.term_frequency().
44    
45    2011-10-11  Ingo Feinerer  <feinerer@logic.at>
46    
47            * R/meta.R (`meta<-.Corpus`): Assume that the replacement value
48            can be accessed via '[' and not '[['.
49    
50    2011-08-24  Ingo Feinerer  <feinerer@logic.at>
51    
52            * R/stopwords.R (stopwords): Raise an error if no stopwords are
53            available for requested language. Suggested by Derek M Jones.
54    
55    2011-05-27  Ingo Feinerer  <feinerer@logic.at>
56    
57            * R/weight.R (weightSMART): Implement Cosine and pivoted unique
58            normalization.
59    
60    2011-02-17  Ingo Feinerer  <feinerer@logic.at>
61    
62            * R/transform.R (stemDocument.PlainTextDocument): Use language
63            argument.
64    
65    2011-02-04  Ingo Feinerer  <feinerer@logic.at>
66    
67            * R/source.R: Store strings and connections instead of unevaluated
68            calls.
69    
70    2010-11-26  Ingo Feinerer  <feinerer@logic.at>
71    
72            * R/corpus.R (Corpus): Allow init and exit hooks for readers.
73    
74    2010-10-22  Ingo Feinerer  <feinerer@logic.at>
75    
76            * R/matrix.R (.TermDocumentMatrix): Make Weighting an attribute
77            (instead of a list element).
78    
79    2010-10-16  Ingo Feinerer  <feinerer@logic.at>
80    
81            * R/corpus.R (`[[.VCorpus`, `[[.PCorpus'): Access individual
82            documents by names (fallback to IDs if names are not set).
83    
84    2010-08-25  Ingo Feinerer  <feinerer@logic.at>
85    
86            * R/corpus.R (c.Corpus): When concatenating corpora, the argument
87            \code{recursive} now determines whether existing corpus meta data
88            is used.
89    
90    2010-08-06  Ingo Feinerer  <feinerer@logic.at>
91    
92            * R/transform.R: Removed convert_UTF_8(). Use enc2utf8() instead.
93    
94    2010-06-17  Ingo Feinerer  <feinerer@logic.at>
95    
96            * R/matrix.R (TermDocumentMatrix): If a dictionary is given do not
97            remove terms not occurring in the corpus anymore.
98    
99    2010-06-02  Ingo Feinerer  <feinerer@logic.at>
100    
101            * R/plot.R (Zipf_plot, Heaps_plot): Plotting functions for Zipf's
102            and Heaps' law.
103    
104    2010-05-18  Ingo Feinerer  <feinerer@logic.at>
105    
106            * R/corpus.R (Corpus, PCorpus): Use element names as IDs if
107            provided by a source.
108    
109    2010-04-09  Ingo Feinerer  <feinerer@logic.at>
110    
111            * R/source.R (.Source): Provide document names.
112    
113    2010-04-07  Ingo Feinerer  <feinerer@logic.at>
114    
115            * R/meta.R (`content_or_meta`): Utility function.
116    
117    2010-03-19  Ingo Feinerer  <feinerer@logic.at>
118    
119            * R/reader.R (readReut21578XML, readReut21578XMLasPlain): Extract
120            TOPICS, LEWISSPLIT, CGISPLIT, and OLDID meta tags.
121    
122    2010-03-03  Ingo Feinerer  <feinerer@logic.at>
123    
124            * R/weight.R (weightTfIdf): Added normalization option.
125    
126            * man/tm_tag_score.Rd: Add General Inquirer example for sentiment
127            analysis.
128    
129    2010-02-25  Ingo Feinerer  <feinerer@logic.at>
130    
131            * R/score.R (tm_tag_score): Compute a score from the number of
132            tags matching in a document.
133    
134    2010-02-18  Ingo Feinerer  <feinerer@logic.at>
135    
136            * R/complete.R (stemCompletion): New completion heuristics.
137    
138    2010-02-17  Ingo Feinerer  <feinerer@logic.at>
139    
140            * R/plot.R (plot.TermDocumentMatrix): Memory improvements.
141    
142    2010-02-06  Ingo Feinerer  <feinerer@logic.at>
143    
144            * DESCRIPTION (Depends): Depend on R (>= 2.10.0) to ensure that
145            setOldClass(c(..., "list")) works.
146    
147    2010-01-22  Ingo Feinerer  <feinerer@logic.at>
148    
149            * R/transform.R (stemDocument.character): In case input is a
150            simple character just delegate to the default Snowball stemmer.
151    
152    2010-01-15  Ingo Feinerer  <feinerer@logic.at>
153    
154            * R/reader.R (readReut21578XML, readRCV1): Extract more meta
155            data.
156    
157    2010-01-12  Ingo Feinerer  <feinerer@logic.at>
158    
159            * R/doc.R (`Content<-`): Be careful with names attribute.
160    
161    2010-01-07  Stefan Theussl  <stefan.theussl@wu.ac.at>
162    
163            * R/source.R (DirSource): Improved implementation especially when
164            handling many (> 1M) files.
165    
166    2009-12-22  Ingo Feinerer  <feinerer@logic.at>
167    
168            * R/source.R (getElem.URISource): Use encoding argument.
169    
170    2009-12-11  Ingo Feinerer  <feinerer@logic.at>
171    
172            * R/doc.R (setOldClass): Register S3 document classes to be
173            recognized by S4 methods.
174    
175    2009-11-25  Ingo Feinerer  <feinerer@logic.at>
176    
177            * R/matrix.R (termFreq): Add option to remove punctuation
178            characters.
179    
180    2009-11-19  Ingo Feinerer  <feinerer@logic.at>
181    
182            * R/matrix.R (c.TermDocumentMatrix): Added combine method for
183            merging multiple term-document matrices.
184    
185    2009-11-17  Ingo Feinerer  <feinerer@logic.at>
186    
187            * R/corpus.R (setOldClass): Register S3 corpus classes to be
188            recognized by S4 methods.
189    
190            * man/plot.Rd: Use \dontrun{} in \examples{} section in the hope
191            that CRAN Mac OS X builds do not fail any longer.
192    
193    2009-11-15  Ingo Feinerer  <feinerer@logic.at>
194    
195            * R/matrix.R (tokenize): Use scan(..., what = "character") instead
196            of RWeka:AlphabeticTokenizer() as default.
197    
198    2009-11-14  Ingo Feinerer  <feinerer@logic.at>
199    
200            * R/transform.R (removeWords.PlainTextDocument): Fix bug which
201            caused words at the beginning or the end of a line not to be removed. Do
202            not delete whitespace anymore.
203    
204    2009-11-12  Ingo Feinerer  <feinerer@logic.at>
205    
206            * R/source.R (DirSource): Default to working directory if no path
207            is specified.
208    
209    2009-11-11  Ingo Feinerer  <feinerer@logic.at>
210    
211            * R/source.R (DirSource): Stop on empty directories.
212    
213    2009-11-07  Ingo Feinerer  <feinerer@logic.at>
214    
215            * R/matrix.R (TermDocumentMatrix): Avoid prefixes originating from
216            named documents.
217    
218    2009-10-21  Ingo Feinerer  <feinerer@logic.at>
219    
220            * R/transform.R (removeWords): Improve regular expressions.
221    
222    2009-10-19  Ingo Feinerer  <feinerer@logic.at>
223    
224            * R/meta.R (DublinCore): Allow lower case tags.
225    
226    2009-10-09  Ingo Feinerer  <feinerer@logic.at>
227    
228            * R/source.R (GmaneSource, ReutersSource): Use xmlChildren(x)
229            instead of x$children.
230    
231    2009-09-15  Ingo Feinerer  <feinerer@logic.at>
232    
233            * R/preprocess.R (preprocessReut21578XML): Fix generated file names.
234    
235    2009-09-06  Ingo Feinerer  <feinerer@logic.at>
236    
237            * R/: Use S3 instead of S4 class system.
238    
239    2009-08-11  Ingo Feinerer  <feinerer@logic.at>
240    
241            * R/reader.R (readMail): Moved to tm.plugin.mail package.
242    
243    2009-07-04  Ingo Feinerer  <feinerer@logic.at>
244    
245            * R/reader.R (readNewsgroup): Rename to readMail as newsgroup
246            postings are basically e-mails with some extra headers.
247    
248    2009-07-03  Ingo Feinerer  <feinerer@logic.at>
249    
250            * R/transform.R: Move convertMboxEml, removeCitation,
251            removeMultipart, and removeSignature to the tm.plugin.mail package
252            since they are mainly utility functions (for handling e-mails) and
253            not very framework specific.
254    
255    2009-06-28  Ingo Feinerer  <feinerer@logic.at>
256    
257            * man/: Fix documentation.
258    
259    2009-06-26  Ingo Feinerer  <feinerer@logic.at>
260    
261            * R/reader.R (readReut21578XMLasPlain): New reader which returns a
262            plain text document instead of an XML document for texts of the
263            Reuters-21578 dataset.
264    
265            * R/sparse.R: Removed since the slam package is now available on
266            CRAN.
267    
268            * DESCRIPTION (Depends): Add slam package.
269    
270    2009-06-17  Ingo Feinerer  <feinerer@logic.at>
271    
272            * R/transform.R (stemDoc): Fix character(0) handling.
273    
274    2009-06-12  Ingo Feinerer  <feinerer@logic.at>
275    
276            * R/doc.R (show): Pretty print.
277    
278    2009-05-27  Ingo Feinerer  <feinerer@logic.at>
279    
280            * R/matrix.R (print.TermDocumentMatrix): Handle empty matrices
281            gracefully.
282    
283    2009-05-13  Ingo Feinerer  <feinerer@logic.at>
284    
285            * R/corpus.R: Make corpus virtual. Implement corpus with standard
286            and permanent storage semantics.
287    
288            * DESCRIPTION: New major release. A *lot* of improvements.
289    
290    2009-05-04   Ingo Feinerer <feinerer@logic.at>
291    
292            * NAMESPACE: Export some simple_triplet_matrix functions.
293    
294    2009-04-28   Ingo Feinerer <feinerer@logic.at>
295    
296            * R/weight.R: Adapt tf-idf to new matrix format.
297    
298    2009-04-27  Ingo Feinerer  <feinerer@logic.at>
299    
300            * R/matrix.R: Create two distinct classes for term-document and
301            document-term matrices.
302    
303    2009-04-26  Ingo Feinerer  <feinerer@logic.at>
304    
305            * R/termdocmatrix.R: No longer use Matrix package. This reduces
306            package start-up time significantly.
307    
308    2009-04-11  Ingo Feinerer  <feinerer@logic.at>
309    
310            * inst/doc/tm.Rnw: Fix code/documentation mismatch.
311    
312    2009-04-04  Ingo Feinerer  <feinerer@logic.at>
313    
314            * R/transform.R (tmReduce): Combine multiple maps into one
315            transformation.
316    
317    2009-04-03  Ingo Feinerer  <feinerer@logic.at>
318    
319            * R/weight.R: Remove weightLogical since it does not return a
320            dgCMatrix.
321    
322            * R/termdocmatrix.R: Removed TermDocMatrix. Use DocumentTermMatrix
323            or TermDocumentMatrix instead.
324    
325    2009-03-28  Ingo Feinerer  <feinerer@logic.at>
326    
327            * inst/doc/extensions.Rnw: Finished vignette.
328    
329    2009-03-27  Ingo Feinerer  <feinerer@logic.at>
330    
331            * R/termdocmatrix.R: Start to work on new TermDocumentMatrix and
332            DocumentTermMatrix representations.
333    
334    2009-03-23  Ingo Feinerer  <feinerer@logic.at>
335    
336            * R/reader.R (readXML): New reader for arbitrary XML files.
337    
338    2009-03-22  Ingo Feinerer  <feinerer@logic.at>
339    
340            * R/source.R (CSVSource): Defunct (use DataframeSource instead).
341            (XMLSource): New XMLSource class for arbitrary XML files.
342            (Source): New slot Vectorized.
343    
344    2009-03-21  Ingo Feinerer  <feinerer@logic.at>
345    
346            * R/reader.R (readTabular): Experimental reader for tabular data
347            structures which can be customized via user-defined mappings.
348    
349            * R/reader.R: Always use UTC time zone.
350    
351            * R/AAA.R (.onLoad): No longer try to start a MPI cluster.
352    
353    2009-03-20  Ingo Feinerer  <feinerer@logic.at>
354    
355            * R/reader.R (readDOC): Options can be passed over to antiword.
356    
357            * R/reader.R (readPDF): Options can be passed over to pdfinfo and
358            pdftotext.
359    
360    2009-03-10  Ingo Feinerer  <feinerer@logic.at>
361    
362            * R/source.R (DirSource): Add pattern and ignore.case arguments
363            which are internally passed over to list.files().
364    
365    2009-03-02  Ingo Feinerer  <feinerer@logic.at>
366    
367            * inst/doc/tm.Rnw: Suppress pointless loading message.
368    
369    2009-01-29  Ingo Feinerer  <feinerer@logic.at>
370    
371            * DESCRIPTION: Speed up package loading (via moving packages not
372            strictly necessary for normal operation to Suggests instead of
373            Depends).
374    
375    2009-01-08  Ingo Feinerer  <feinerer@logic.at>
376    
377            * R/reader.R (readNewsgroup): The date format is now configurable.
378    
379    2008-12-20  Ingo Feinerer  <feinerer@logic.at>
380    
381            * R/preprocess.R (convertMboxEml): Fix off-by-one error.
382    
383    2008-12-16  Ingo Feinerer  <feinerer@logic.at>
384    
385            * R/termdocmatrix.R (TermDocMatrix): Sort row indices.
386    
387    2008-12-06  Ingo Feinerer  <feinerer@logic.at>
388    
389            * R/source.R (DataframeSource): New source class for data frames.
390    
391            * R/source.R: Fixed non-standard call evaluation.
392    
393    2008-11-29  Ingo Feinerer  <feinerer@logic.at>
394    
395            * R/source.R (URISource): New source class for a single document.
396    
397    2008-11-27  Ingo Feinerer  <feinerer@logic.at>
398    
399            * R/source.R: Refactoring.
400    
401    2008-11-25  Ingo Feinerer  <feinerer@logic.at>
402    
403            * R/AAA.R (.onLoad, .Last): Use tryCatch() to handle misconfigured
404            Rmpi installations more gracefully.
405    
406    2008-11-08  Ingo Feinerer  <feinerer@logic.at>
407    
408            * R/source.R (Source): Add Length slot.
409    
410    2008-11-06  Ingo Feinerer  <feinerer@logic.at>
411    
412            * R/AAA.R: Unify duplicated .onLoad function.
413    
414    2008-11-03  Ingo Feinerer  <feinerer@logic.at>
415    
416            * DESCRIPTION (Suggests): Added Rmpi.
417    
418    2008-11-02  Ingo Feinerer  <feinerer@logic.at>
419    
420            * R/source.R (getElem): Fix 'no visible binding' warning.
421    
422            * man/WeightFunction.Rd: Fix signature.
423    
424    2008-08-03  Ingo Feinerer  <feinerer@logic.at>
425    
426            * R/weight.R: Introduce name abbreviations for weighting functions.
427    
428    2008-07-24  Ingo Feinerer  <feinerer@logic.at>
429    
430            * R/AAA.R (.onLoad, .Last): Start and stop MPI cluster.
431    
432            * R/cluster.R: Provide convenience functions for using a MPI
433            cluster.
434    
435            * R/termdocmatrix.R (TermDocMatrix): Use MPI cluster if
436            available.
437    
438            * R/textdoccol.R (tmIndex, tmFilter, tmMap): Use MPI cluster if
439            available.
440    
441    2008-07-17  Ingo Feinerer  <feinerer@logic.at>
442    
443            * R/textdoccol.R (lapply): Removed debug print out.
444    
445    2008-06-06  Ingo Feinerer  <h0125130@wu-wien.ac.at>
446    
447            * R/reader.R (readRCV1): Improved meta data extraction from
448            Reuters Corpus Volume 1 documents.
449    
450    2008-05-25  Ingo Feinerer  <h0125130@wu-wien.ac.at>
451    
452            * R/transform.R: Ensure that all mappings preserve multiline
453            structures.
454    
455    2008-05-24  Ingo Feinerer  <h0125130@wu-wien.ac.at>
456    
457            * R/filter.R: Every filter has now an attribute indicating whether
458            it sould be applied to document level (doclevel).
459    
460            * R/textdoccol.R (tmFilter): Set searchFullText as new default
461            filter.
462    
463    2008-04-23  Ingo Feinerer  <h0125130@wu-wien.ac.at>
464    
465            * R/transform.R (replacePatterns): Replaced removeWords by
466            replacePatterns. Suggested by Christian Buchta.
467    
468            * R/textdoccol.R (inspect): Improved formatting.
469    
470    2008-04-19  Ingo Feinerer  <h0125130@wu-wien.ac.at>
471    
472            * inst/CITATION: Updated JSS article information.
473    
474            * R/textdoccol.R (setAs): Added coerce method from list to
475            corpus.
476    
477            * R/meta.R (meta): Improved meta data handling.
478    
479    2008-03-21  Ingo Feinerer  <h0125130@wu-wien.ac.at>
480    
481            * R/textdoccol.R (materialize, tmMap): Improvements suggested by
482            Christian Buchta.
483    
484            * inst/CITATION: Added template to include JSS article reference.
485    
486    2008-03-12  Ingo Feinerer  <h0125130@wu-wien.ac.at>
487    
488            * R/textdoccol.R (tmMap): Introduced lazy mapping.
489    
490            * R/source.R: Added VectorSource.
491    
492    2008-02-23  Ingo Feinerer  <h0125130@wu-wien.ac.at>
493    
494            * man/: Language codes should be in ISO 639-1 format.
495    
496            * R/textdoccol.R (asPlain): Preserve local meta data.
497    
498    2008-01-31  Ingo Feinerer  <h0125130@wu-wien.ac.at>
499    
500            * R/textdoccol.R (writeCorpus): Function for writing a corpus
501            containing plain text documents to disk.
502    
503    2008-01-30  Ingo Feinerer  <h0125130@wu-wien.ac.at>
504    
505            * R/termdocmatrix.R (TermDocMatrix): Ensure that dimnames are
506            always set correctly.
507    
508            * R/textdoccol.R: Set load = TRUE as default for load on demand
509            since in most cases this is the wanted behaviour.
510    
511    2008-01-24  Ingo Feinerer  <h0125130@wu-wien.ac.at>
512    
513            * R/: Renamed TextDocCol to Corpus, and Corpus to Content.
514    
515            * DESCRIPTION: Updated Version to 0.3 due to core name changes.
516    
517    2008-01-22  Ingo Feinerer  <h0125130@wu-wien.ac.at>
518    
519            * R/meta.R (meta): New function for consistent access to meta data
520            of document collections, repositories, and texts.
521    
522    2008-01-21  Ingo Feinerer  <h0125130@wu-wien.ac.at>
523    
524            * R/: Better support for encodings.
525    
526    2008-01-13  Ingo Feinerer  <h0125130@wu-wien.ac.at>
527    
528            * R/textdoccol.R (TextDocCol): Fixed bug regarding default reader
529            selection when no reader argument is given.
530    
531    2008-01-05  Ingo Feinerer  <h0125130@wu-wien.ac.at>
532    
533            * R/source.R (CSVSource): Now uses read.csv instead of scan
534            internally.
535    
536    2008-01-02  Ingo Feinerer  <h0125130@wu-wien.ac.at>
537    
538            * R/reader.R (getReaders): Returns available reader functions.
539    
540            * R/termdocmatrix.R (TermDocMatrix): Set new modular constructor
541            as default.
542    
543    2007-12-02  Ingo Feinerer  <h0125130@wu-wien.ac.at>
544    
545            * R/stopwords.R (stopwords): Shortened code, removed codetools
546            variable warnings.
547    
548            * man/: Documentation for showMeta, added an example for tmMap.
549    
550            * inst/doc/tm.Rnw: Updated vignette, comments on MS word reader,
551            some minor typos fixed.
552    
553    2007-12-01  Ingo Feinerer  <h0125130@wu-wien.ac.at>
554    
555            * R/aobjects.R (showMeta): Added method for pretty printing a
556            text document's meta data.
557    
558    2007-11-29  Ingo Feinerer  <h0125130@wu-wien.ac.at>
559    
560            * R/textdoccol.R (TextDocCol): Better handling of empty
561            arguments.
562    
563            * NAMESPACE: Exported readDOC.
564    
565            * man/completeStems.Rd: Added an example.
566    
567    2007-11-18  Ingo Feinerer  <h0125130@wu-wien.ac.at>
568    
569            * R/stopwords.R (stopwords): Look up .dat files at every
570            call. Allows users to modify stopword .dat files interactively.
571    
572    2007-11-06  Ingo Feinerer  <h0125130@wu-wien.ac.at>
573    
574            * R/termdocmatrix.R (termFreq): Correct processing of empty
575            documents.
576    
577    2007-10-27  Ingo Feinerer  <h0125130@wu-wien.ac.at>
578    
579            * man/: Updated documentation.
580    
581    2007-10-21  Ingo Feinerer  <h0125130@wu-wien.ac.at>
582    
583            * R/complete.R (completeStems): Completes (heuristically) word
584            stems.
585    
586            * R/termdocmatrix.R (TermDocMatrix2): New modular
587            constructor.
588    
589            * NAMESPACE: Exported termFreq.
590    
591    2007-10-16  Ingo Feinerer  <h0125130@wu-wien.ac.at>
592    
593            * R/reader.R (readDOC): Added MS Word reader (using antiword).
594    
595    2007-10-14  Ingo Feinerer  <h0125130@wu-wien.ac.at>
596    
597            * R/weight.R: Weighting functions for TermDocMatrix.
598    
599    2007-10-13  Ingo Feinerer  <h0125130@wu-wien.ac.at>
600    
601            * R/termdocmatrix.R (dimnames, colnames, rownames): Wrapper
602            functions for accessing dimension, column, and row names.
603    
604            * R/plot.R (plot.TermDocMatrix): Plot correlations between terms.
605    
606    2007-09-11  Ingo Feinerer  <h0125130@wu-wien.ac.at>
607    
608            * man/removePunctuation.Rd: Added documentation. Function also exported to NAMESPACE.
609    
610    2007-08-28  Ingo Feinerer  <h0125130@wu-wien.ac.at>
611    
612            * R/fungen.R: Use S4 class for function generators instead of S3 attributes.
613    
614    2007-07-29  Ingo Feinerer  <h0125130@wu-wien.ac.at>
615    
616            * R/reader.R (readPDF): Removed manual checks for pdftotext and
617            pdfinfo. The system call gives a warning anyway.
618    
619    2007-07-28  Ingo Feinerer  <h0125130@wu-wien.ac.at>
620    
621            * R/textdoccol.R (asPlain): Conversion from
622            StructuredTextDocuments to PlainTextDocuments.
623    
624    2007-07-21  Ingo Feinerer  <h0125130@wu-wien.ac.at>
625    
626            * R/termdocmatrix.R: Added convenience methods ("[", nrow, ncol)
627            for accessing term-document matrices.
628    
629            * inst/doc/tm.Rnw: readPDF is only called if pdftotext and pdfinfo
630            are installed.
631    
632    2007-07-17  Ingo Feinerer  <h0125130@wu-wien.ac.at>
633    
634            * R/termdocmatrix.R (TermDocMatrix): Improved efficiency. Kudos to
635            Christian Buchta.
636    
637    2007-07-15  Ingo Feinerer  <h0125130@wu-wien.ac.at>
638    
639            * inst/doc/tm.Rnw: Update vignette (readPDF, readHTML, preprocessReut21578XML).
640    
641    2007-07-14  Ingo Feinerer  <h0125130@wu-wien.ac.at>
642    
643            * R/reader.R (readHTML): Added very simple HTML reader to obtain StructuredTextDocuments.
644    
645            * R/reader.R (readPDF): Added PDF reader.
646    
647    2007-07-13  Ingo Feinerer  <h0125130@wu-wien.ac.at>
648    
649            * DESCRIPTION: Moved proxy from Depends to Imports to avoid name clashes.
650    
651            * inst/stopwords/english.dat: Added the term "yes" to stopwords.
652    
653            * R/termdocmatrix.R (dim): dim function for TermDocMatrix.
654    
655            * R/preprocess.R (convertMboxEml): Accepts gzipped mboxes.
656    
657    2007-07-11  Ingo Feinerer  <h0125130@wu-wien.ac.at>
658    
659            * R/distmeasure.R (dissimilarity): Replaced dists call from
660            package cba by new dist call from package proxy.
661    
662    2007-07-10  Ingo Feinerer  <h0125130@wu-wien.ac.at>
663    
664            * inst/doc/tm.Rnw: Described removeSparseTerms and Dictionary.
665    
666    2007-06-21  Ingo Feinerer  <h0125130@wu-wien.ac.at>
667    
668            * R/termdocmatrix.R: require() uses the quietly option to suppress
669            loading messages.
670    
671    2007-06-12  Ingo Feinerer  <h0125130@wu-wien.ac.at>
672    
673            * R/dictionary.R: Added dictionary support.
674    
675    2007-06-07  Ingo Feinerer  <h0125130@wu-wien.ac.at>
676    
677            * R/aobjects.R: Added classes for Reuters21578 XML and RCV1
678            documents. This simplifies some functions, e.g., asPlain.
679    
680    2007-06-06  Ingo Feinerer  <h0125130@wu-wien.ac.at>
681    
682            * inst/doc/tm.Rnw: Fixed some typos in vignette.
683    
684    2007-06-03  Ingo Feinerer  <h0125130@wu-wien.ac.at>
685    
686            * R/textdoccol.R (replaceWords): Added method to replace a set of
687            words by a single word. Useful for synonyms.
688    
689    2007-05-22  Ingo Feinerer  <h0125130@wu-wien.ac.at>
690    
691            * man/TermDocMatrix.Rd: Fixed documentation on Data slot.
692    
693    2007-05-19  Ingo Feinerer  <h0125130@wu-wien.ac.at>
694    
695            * R/termdocmatrix.R (textvector): Small fix for dealing with empty
696            vectors. Thanks to Ariel Maguyon for his error report.
697            (removeSparseTerms): New function to remove columns from a
698            term-document matrix exceeding a sparse factor.
699    
700    2007-05-15  Ingo Feinerer  <h0125130@wu-wien.ac.at>
701    
702            * man/tmUpdate.Rd: Corrected documentation on readerControl parameter.
703    
704    2007-05-11  Ingo Feinerer  <h0125130@wu-wien.ac.at>
705    
706            * man/sFilter.Rd: Corrected documentation on statement format (use
707            '==' instead of '=').
708    
709    2007-05-08  Ingo Feinerer  <h0125130@wu-wien.ac.at>
710    
711            * R/aobjects.R (StructuredTextDocument): Inherits from
712            TextDocument.
713    
714    2007-05-04  Ingo Feinerer  <h0125130@wu-wien.ac.at>
715    
716            * R/termdocmatrix.R (findFreqTerms): Perform efficient computation
717            on sparse matrices as proposed by Martin Maechler.
718    
719    2007-04-27  Ingo Feinerer  <h0125130@wu-wien.ac.at>
720    
721            * R/textdoccol.R: Removed \code{dbDisconnect} calls since last
722            \pkg{filehash} version makes them deprecated.
723    
724    2007-04-22  Ingo Feinerer  <h0125130@wu-wien.ac.at>
725    
726            * R/termdocmatrix.R (textvector): Stemming is now performed before
727            erasing stopwords.
728            (weightMatrix): Adapted to handle sparse matrices.
729            (TermDocMatrix): Sparse matrix is now efficiently built by
730            direct stepwise insertion of row values into it.
731    
732    2007-04-21  Ingo Feinerer  <h0125130@wu-wien.ac.at>
733    
734            * DESCRIPTION: Replaced \pkg{filehashSQLite} with \pkg{filehash}
735            due to ongoing problems. For our purposes the latter is as useful
736            as the replaced package.
737    
738    2007-04-20  Ingo Feinerer  <h0125130@wu-wien.ac.at>
739    
740            * man/TextDocCol.Rd: Replaced \code{readPlain} with \code{object@DefaultReader}.
741    
742            * man/TermDocMatrix.Rd: Remove deprecated \code{language} argument.
743    
744    2007-04-15  Ingo Feinerer  <h0125130@wu-wien.ac.at>
745    
746            * R/resolve.R (resolveISOCode): Added ISO 639-1 codes for
747            languages with available stopwords.
748    
749    2007-04-14  Ingo Feinerer  <h0125130@wu-wien.ac.at>
750    
751            * inst/doc/tm.Rnw: Minor corrections in the vignette.
752    
753    2007-04-11  Ingo Feinerer  <h0125130@wu-wien.ac.at>
754    
755            * DESCRIPTION: Update to version 0.2, since a lot of new features
756            have been integrated.
757    
758            * inst/stopwords: Updated existing stopwords and added stopwords
759            for various other languages.
760    
761    2007-04-10  Ingo Feinerer  <h0125130@wu-wien.ac.at>
762    
763            * man/: Updated documentation.
764    
765            * Work/testDb.R: Script to test database stuff.
766    
767            * R/: Fixed various database related bugs. Seems to be rather
768            useable now, i.e., consider as alpha status for now.
769    
770    2007-04-08  Ingo Feinerer  <h0125130@wu-wien.ac.at>
771    
772            * R/: Fixed some bugs related to database support.
773    
774    2007-04-07  Ingo Feinerer  <h0125130@wu-wien.ac.at>
775    
776            * man/: Added a lot of examples to the manuals.
777    
778    2007-04-05  Ingo Feinerer  <h0125130@wu-wien.ac.at>
779    
780            * man/: Updated parts of the documentation.
781    
782            * R/textdoccol.R (asPlain): Added conversion from newsgroup
783            documents to plain text documents.
784    
785    2007-04-01  Ingo Feinerer  <h0125130@wu-wien.ac.at>
786    
787            * R/textdoccol.R: Finished experimental database support. Not yet
788            intensively tested.
789    
790            * R/source.R: Now each source has a default reader.
791    
792            * R/reader.R: \code{FunctionGenerator} is now an attribute, not a
793            class anymore.
794    
795            * R/plaintextdoc.R: Custom show method for plain text documents.
796    
797            * R/aobjects.R: Added a class for structured text documents.
798    
799            * R/reader.R: Replaced remaining \code{parser} occurrences with
800            \code{reader}.
801    
802            * R/textdoccol.R (summary): Indent tags.
803    
804            * R/textdoccol.R (removePunctuation): Transform method to remove
805            punctuation marks.
806    
807    2007-03-21  Ingo Feinerer  <h0125130@wu-wien.ac.at>
808    
809            * R/textdoccol.R (sFilter): Simplified sFilter significantly by
810            using prescindMeta().
811    
812  2007-03-18  Ingo Feinerer  <h0125130@wu-wien.ac.at>  2007-03-18  Ingo Feinerer  <h0125130@wu-wien.ac.at>
813    
814          * R/textdoccol.R: Improved database support.          * R/textdoccol.R: Improved database support.

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