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revision 1007, Tue Sep 15 18:02:44 2009 UTC revision 1151, Thu Nov 17 14:21:49 2011 UTC
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1    2011-11-17  Ingo Feinerer  <feinerer@logic.at>
2    
3            * R/matrix (termFreq): Allow local option \code{bounds$local} to
4            restrict how often a term may appear in each document (generalizes
5            \code{minDocFreq}). Similarly the local option \code{wordLenghts}
6            for word length bounds (generalizes \code{minWordLength}).
7    
8            * R/matrix.R (TermDocumentMatrix.VCorpus): New global option
9            \code{bounds$global} for restricting how often a term is allowed
10            to appear in different documents.
11    
12            * R/matrix.R (TermDocumentMatrix.VCorpus): Distinguish between
13            local options delegated internally to termFreq() and global
14            options which are processed by the term-document matrix
15            constructor itself.
16    
17    2011-11-15  Ingo Feinerer  <feinerer@logic.at>
18    
19            * man/getTokenizers.Rd: Document getTokenizers().
20    
21            * man/tokenizer.Rd: Document MC_tokenizer() and scan_tokenizer().
22    
23    2011-11-04  Ingo Feinerer  <feinerer@logic.at>
24    
25            * man/matrix.Rd: Document as.TermDocumentMatrix.term_frequency.
26    
27            * man/combine.Rd: Document c.term_frequency().
28    
29    2011-10-11  Ingo Feinerer  <feinerer@logic.at>
30    
31            * R/meta.R (`meta<-.Corpus`): Assume that the replacement value
32            can be accessed via '[' and not '[['.
33    
34    2011-08-24  Ingo Feinerer  <feinerer@logic.at>
35    
36            * R/stopwords.R (stopwords): Raise an error if no stopwords are
37            available for requested language. Suggested by Derek M Jones.
38    
39    2011-05-27  Ingo Feinerer  <feinerer@logic.at>
40    
41            * R/weight.R (weightSMART): Implement Cosine and pivoted unique
42            normalization.
43    
44    2011-02-17  Ingo Feinerer  <feinerer@logic.at>
45    
46            * R/transform.R (stemDocument.PlainTextDocument): Use language
47            argument.
48    
49    2011-02-04  Ingo Feinerer  <feinerer@logic.at>
50    
51            * R/source.R: Store strings and connections instead of unevaluated
52            calls.
53    
54    2010-11-26  Ingo Feinerer  <feinerer@logic.at>
55    
56            * R/corpus.R (Corpus): Allow init and exit hooks for readers.
57    
58    2010-10-22  Ingo Feinerer  <feinerer@logic.at>
59    
60            * R/matrix.R (.TermDocumentMatrix): Make Weighting an attribute
61            (instead of a list element).
62    
63    2010-10-16  Ingo Feinerer  <feinerer@logic.at>
64    
65            * R/corpus.R (`[[.VCorpus`, `[[.PCorpus'): Access individual
66            documents by names (fallback to IDs if names are not set).
67    
68    2010-08-25  Ingo Feinerer  <feinerer@logic.at>
69    
70            * R/corpus.R (c.Corpus): When concatenating corpora, the argument
71            \code{recursive} now determines whether existing corpus meta data
72            is used.
73    
74    2010-08-06  Ingo Feinerer  <feinerer@logic.at>
75    
76            * R/transform.R: Removed convert_UTF_8(). Use enc2utf8() instead.
77    
78    2010-06-17  Ingo Feinerer  <feinerer@logic.at>
79    
80            * R/matrix.R (TermDocumentMatrix): If a dictionary is given do not
81            remove terms not occurring in the corpus anymore.
82    
83    2010-06-02  Ingo Feinerer  <feinerer@logic.at>
84    
85            * R/plot.R (Zipf_plot, Heaps_plot): Plotting functions for Zipf's
86            and Heaps' law.
87    
88    2010-05-18  Ingo Feinerer  <feinerer@logic.at>
89    
90            * R/corpus.R (Corpus, PCorpus): Use element names as IDs if
91            provided by a source.
92    
93    2010-04-09  Ingo Feinerer  <feinerer@logic.at>
94    
95            * R/source.R (.Source): Provide document names.
96    
97    2010-04-07  Ingo Feinerer  <feinerer@logic.at>
98    
99            * R/meta.R (`content_or_meta`): Utility function.
100    
101    2010-03-19  Ingo Feinerer  <feinerer@logic.at>
102    
103            * R/reader.R (readReut21578XML, readReut21578XMLasPlain): Extract
104            TOPICS, LEWISSPLIT, CGISPLIT, and OLDID meta tags.
105    
106    2010-03-03  Ingo Feinerer  <feinerer@logic.at>
107    
108            * R/weight.R (weightTfIdf): Added normalization option.
109    
110            * man/tm_tag_score.Rd: Add General Inquirer example for sentiment
111            analysis.
112    
113    2010-02-25  Ingo Feinerer  <feinerer@logic.at>
114    
115            * R/score.R (tm_tag_score): Compute a score from the number of
116            tags matching in a document.
117    
118    2010-02-18  Ingo Feinerer  <feinerer@logic.at>
119    
120            * R/complete.R (stemCompletion): New completion heuristics.
121    
122    2010-02-17  Ingo Feinerer  <feinerer@logic.at>
123    
124            * R/plot.R (plot.TermDocumentMatrix): Memory improvements.
125    
126    2010-02-06  Ingo Feinerer  <feinerer@logic.at>
127    
128            * DESCRIPTION (Depends): Depend on R (>= 2.10.0) to ensure that
129            setOldClass(c(..., "list")) works.
130    
131    2010-01-22  Ingo Feinerer  <feinerer@logic.at>
132    
133            * R/transform.R (stemDocument.character): In case input is a
134            simple character just delegate to the default Snowball stemmer.
135    
136    2010-01-15  Ingo Feinerer  <feinerer@logic.at>
137    
138            * R/reader.R (readReut21578XML, readRCV1): Extract more meta
139            data.
140    
141    2010-01-12  Ingo Feinerer  <feinerer@logic.at>
142    
143            * R/doc.R (`Content<-`): Be careful with names attribute.
144    
145    2010-01-07  Stefan Theussl  <stefan.theussl@wu.ac.at>
146    
147            * R/source.R (DirSource): Improved implementation especially when
148            handling many (> 1M) files.
149    
150    2009-12-22  Ingo Feinerer  <feinerer@logic.at>
151    
152            * R/source.R (getElem.URISource): Use encoding argument.
153    
154    2009-12-11  Ingo Feinerer  <feinerer@logic.at>
155    
156            * R/doc.R (setOldClass): Register S3 document classes to be
157            recognized by S4 methods.
158    
159    2009-11-25  Ingo Feinerer  <feinerer@logic.at>
160    
161            * R/matrix.R (termFreq): Add option to remove punctuation
162            characters.
163    
164    2009-11-19  Ingo Feinerer  <feinerer@logic.at>
165    
166            * R/matrix.R (c.TermDocumentMatrix): Added combine method for
167            merging multiple term-document matrices.
168    
169    2009-11-17  Ingo Feinerer  <feinerer@logic.at>
170    
171            * R/corpus.R (setOldClass): Register S3 corpus classes to be
172            recognized by S4 methods.
173    
174            * man/plot.Rd: Use \dontrun{} in \examples{} section in the hope
175            that CRAN Mac OS X builds do not fail any longer.
176    
177    2009-11-15  Ingo Feinerer  <feinerer@logic.at>
178    
179            * R/matrix.R (tokenize): Use scan(..., what = "character") instead
180            of RWeka:AlphabeticTokenizer() as default.
181    
182    2009-11-14  Ingo Feinerer  <feinerer@logic.at>
183    
184            * R/transform.R (removeWords.PlainTextDocument): Fix bug which
185            caused words at the beginning or the end of a line not to be removed. Do
186            not delete whitespace anymore.
187    
188    2009-11-12  Ingo Feinerer  <feinerer@logic.at>
189    
190            * R/source.R (DirSource): Default to working directory if no path
191            is specified.
192    
193    2009-11-11  Ingo Feinerer  <feinerer@logic.at>
194    
195            * R/source.R (DirSource): Stop on empty directories.
196    
197    2009-11-07  Ingo Feinerer  <feinerer@logic.at>
198    
199            * R/matrix.R (TermDocumentMatrix): Avoid prefixes originating from
200            named documents.
201    
202    2009-10-21  Ingo Feinerer  <feinerer@logic.at>
203    
204            * R/transform.R (removeWords): Improve regular expressions.
205    
206    2009-10-19  Ingo Feinerer  <feinerer@logic.at>
207    
208            * R/meta.R (DublinCore): Allow lower case tags.
209    
210    2009-10-09  Ingo Feinerer  <feinerer@logic.at>
211    
212            * R/source.R (GmaneSource, ReutersSource): Use xmlChildren(x)
213            instead of x$children.
214    
215  2009-09-15  Ingo Feinerer  <feinerer@logic.at>  2009-09-15  Ingo Feinerer  <feinerer@logic.at>
216    
217          * R/preprocess.R (preprocessReut21578XML): Fix generated file names.          * R/preprocess.R (preprocessReut21578XML): Fix generated file names.

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