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Diff of /trunk/tm/ChangeLog

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revision 738, Fri Apr 20 13:55:34 2007 UTC revision 774, Sat Jul 21 16:25:54 2007 UTC
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1    2007-07-21  Ingo Feinerer  <h0125130@wu-wien.ac.at>
2    
3            * R/termdocmatrix.R: Added convenience methods ("[", nrow, ncol)
4            for accessing term-document matrices.
5    
6            * inst/doc/tm.Rnw: readPDF is only called if pdftotext and pdfinfo
7            are installed.
8    
9    2007-07-17  Ingo Feinerer  <h0125130@wu-wien.ac.at>
10    
11            * R/termdocmatrix.R (TermDocMatrix): Improved efficiency. Kudos to
12            Christian Buchta.
13    
14    2007-07-15  Ingo Feinerer  <h0125130@wu-wien.ac.at>
15    
16            * inst/doc/tm.Rnw: Update vignette (readPDF, readHTML, preprocessReut21578XML).
17    
18    2007-07-14  Ingo Feinerer  <h0125130@wu-wien.ac.at>
19    
20            * R/reader.R (readHTML): Added very simple HTML reader to obtain StructuredTextDocuments.
21    
22            * R/reader.R (readPDF): Added PDF reader.
23    
24    2007-07-13  Ingo Feinerer  <h0125130@wu-wien.ac.at>
25    
26            * DESCRIPTION: Moved proxy from Depends to Imports to avoid name clashes.
27    
28            * inst/stopwords/english.dat: Added the term "yes" to stopwords.
29    
30            * R/termdocmatrix.R (dim): dim function for TermDocMatrix.
31    
32            * R/preprocess.R (convertMboxEml): Accepts gzipped mboxes.
33    
34    2007-07-11  Ingo Feinerer  <h0125130@wu-wien.ac.at>
35    
36            * R/distmeasure.R (dissimilarity): Replaced dists call from
37            package cba by new dist call from package proxy.
38    
39    2007-07-10  Ingo Feinerer  <h0125130@wu-wien.ac.at>
40    
41            * inst/doc/tm.Rnw: Described removeSparseTerms and Dictionary.
42    
43    2007-06-21  Ingo Feinerer  <h0125130@wu-wien.ac.at>
44    
45            * R/termdocmatrix.R: require() uses the quietly option to suppress
46            loading messages.
47    
48    2007-06-12  Ingo Feinerer  <h0125130@wu-wien.ac.at>
49    
50            * R/dictionary.R: Added dictionary support.
51    
52    2007-06-07  Ingo Feinerer  <h0125130@wu-wien.ac.at>
53    
54            * R/aobjects.R: Added classes for Reuters21578 XML and RCV1
55            documents. This simplifies some functions, e.g., asPlain.
56    
57    2007-06-06  Ingo Feinerer  <h0125130@wu-wien.ac.at>
58    
59            * inst/doc/tm.Rnw: Fixed some typos in vignette.
60    
61    2007-06-03  Ingo Feinerer  <h0125130@wu-wien.ac.at>
62    
63            * R/textdoccol.R (replaceWords): Added method to replace a set of
64            words by a single word. Useful for synonyms.
65    
66    2007-05-22  Ingo Feinerer  <h0125130@wu-wien.ac.at>
67    
68            * man/TermDocMatrix.Rd: Fixed documentation on Data slot.
69    
70    2007-05-19  Ingo Feinerer  <h0125130@wu-wien.ac.at>
71    
72            * R/termdocmatrix.R (textvector): Small fix for dealing with empty
73            vectors. Thanks to Ariel Maguyon for his error report.
74            (removeSparseTerms): New function to remove columns from a
75            term-document matrix exceeding a sparse factor.
76    
77    2007-05-15  Ingo Feinerer  <h0125130@wu-wien.ac.at>
78    
79            * man/tmUpdate.Rd: Corrected documentation on readerControl parameter.
80    
81    2007-05-11  Ingo Feinerer  <h0125130@wu-wien.ac.at>
82    
83            * man/sFilter.Rd: Corrected documentation on statement format (use
84            '==' instead of '=').
85    
86    2007-05-08  Ingo Feinerer  <h0125130@wu-wien.ac.at>
87    
88            * R/aobjects.R (StructuredTextDocument): Inherits from
89            TextDocument.
90    
91    2007-05-04  Ingo Feinerer  <h0125130@wu-wien.ac.at>
92    
93            * R/termdocmatrix.R (findFreqTerms): Perform efficient computation
94            on sparse matrices as proposed by Martin Maechler.
95    
96    2007-04-27  Ingo Feinerer  <h0125130@wu-wien.ac.at>
97    
98            * R/textdoccol.R: Removed \code{dbDisconnect} calls since last
99            \pkg{filehash} version makes them deprecated.
100    
101    2007-04-22  Ingo Feinerer  <h0125130@wu-wien.ac.at>
102    
103            * R/termdocmatrix.R (textvector): Stemming is now performed before
104            erasing stopwords.
105            (weightMatrix): Adapted to handle sparse matrices.
106            (TermDocMatrix): Sparse matrix is now efficiently built by
107            direct stepwise insertion of row values into it.
108    
109    2007-04-21  Ingo Feinerer  <h0125130@wu-wien.ac.at>
110    
111            * DESCRIPTION: Replaced \pkg{filehashSQLite} with \pkg{filehash}
112            due to ongoing problems. For our purposes the latter is as useful
113            as the replaced package.
114    
115  2007-04-20  Ingo Feinerer  <h0125130@wu-wien.ac.at>  2007-04-20  Ingo Feinerer  <h0125130@wu-wien.ac.at>
116    
117          * man/TextDocCol.Rd: Replaced \code{readPlain} with \code{object@DefaultReader}.          * man/TextDocCol.Rd: Replaced \code{readPlain} with \code{object@DefaultReader}.

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