n-Gram Text Regression, aka Concise Comparative Summarization

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Documentation for package ‘textreg’ version 0.1.5

• DESCRIPTION file.
• User guides, package vignettes and other documentation.

Help Pages

textreg-package	Sparse regression package for text that allows for multiple word phrases.
bathtub	Sample of cleaned OSHA accident summaries.
build.corpus	Build a corpus that can be used in the textreg call.
calc.loss	Calculate total loss of model (Squared hinge loss).
clean.text	Clean text and get it ready for textreg.
cluster.phrases	Cluster phrases based on similarity of appearance.
convert.tm.to.character	Convert tm corpus to vector of strings.
cpp_build.corpus	Driver function for the C++ function.
cpp_textreg	Driver function for the C++ function.
dirtyBathtub	Sample of raw-text OSHA accident summaries.
find.CV.C	K-fold cross-validation to determine optimal tuning parameter
find.threshold.C	Conduct permutation test on labeling to get null distribution of regularization parameter.
fragment.sample	Is object a fragment.sample object?
grab.fragments	Grab all fragments in a corpus with given phrase.
is.fragment.sample	Is object a fragment.sample object?
is.textreg.corpus	Is object a textreg.corpus object?
is.textreg.result	Is object a textreg.result object?
list.table.chart	Graphic showing multiple word lists side-by-side.
make.appearance.matrix	Make phrase appearance matrix from textreg result.
make.count.table	Count number of times documents have a given phrase.
make.CV.chart	Plot K-fold cross validation curves
make.list.table	Collate multiple regression runs.
make.path.matrix	Generate matrix describing gradient descent path of textreg.
make.phrase.correlation.chart	Generate visualization of phrase overlap.
make.phrase.matrix	Make a table of where phrases appear in a corpus
make.similarity.matrix	Calculate similarity matrix for set of phrases.
make_search_phrases	Convert phrases to appropriate search string.
path.matrix.chart	Plot optimization path of textreg.
phrase.count	Count phrase appearance.
phrase.matrix	Make matrix of where phrases appear in corpus.
phrases	Get the phrases from the textreg.result object?
plot.textreg.result	Plot the sequence of features as they are introduced with the textreg gradient descent program.
predict.textreg.result	Predict labeling with the selected phrases.
print.fragment.sample	Pretty print results of phrase sampling object.
print.textreg.corpus	Pretty print textreg corpus object
print.textreg.result	Pretty print results of textreg regression.
reformat.textreg.model	Clean up output from textreg.
sample.fragments	Sample fragments of text to contextualize a phrase.
save.corpus.to.files	Save corpus to text (and RData) file.
stem.corpus	Step corpus with annotation.
testCorpora	Some small, fake test corpora.
textreg	Sparse regression of labeling vector onto all phrases in a corpus.
textreg.corpus	Is object a textreg.corpus object?
textreg.result	Is object a textreg.result object?
tm_gregexpr	Call gregexpr on the content of a tm Corpus.