NEWS.md

In PolMine/topicanalysis: tools for topicmodelling

topicanalysis 0.1.22

• The function mallet_make_instance_list() now accepts an argument phrases (#10).

topicanalysis 0.1.21

• New function mallet_instance_list_store to load a Java InstanceList object from disk (#9).

topicanalysis 0.1.19

• Substantial improvement of the documentation of the cooccurrences()-method.
• The cooccurrences()-method now accepts an argument method to determine the statistical test to be applied.
• The total number of occurrences of topics a and b will now be reported in the data.table resulting from the cooccurrences()-method.
• A flaw in the calculation of the number of total occurrences in the cooccurrences()-method has been removed, when renumbering topics.
• Added packages rmarkdown and webshot to "Suggests" section in DESCRIPTION to pass tests on appveyor.

topicanalysis 0.1.18

• The argument topic_matrix of the cooccurrences()-method has been discarded again. Instead, the method is now defined for the TopicModel class and the matrix class. If multiple calculations are carried out, it may be much faster to generate the document-term-matrix once outside the cooccurrences()-method, and to apply the method on the matrix.

topicanalysis 0.1.17

• A new argument regex has been added to the docs()-method. It can be used to limit the analysis to documents matched by the regular expression.
• A bug has been removed from the cooccurrences()-method that resulted in an overestimation of the cooccurrence of topics when topics had been renumbered.
• A new field topics has been introduced in the Topicanalysis class. A topics-document-matrix can # be stored here. As retrieving the topics-document-matrix can be slow, subsequent operations on this matrix are faster now.
• The cooccurrencs()-method for the TopicModel class now has an argument topic_matrix, so that a topic-document-matrix prepared outside the method can be re-used. May be used for speeding up operations.
• Added new argument verbose to Topicanalysis$cooccurrences()-method, which is passed into S4 method cooccurrences().

topicanalysis 0.1.14

• The preliminary Rmarkdown template to use 'gensim' for topic modelling has been turned into a (somewhat) consolidated Rmarkdown template.
• Functions gensim_ldamodel_as_LDA_Gibbs(), gensim_ldamodel_load() and dtm_as_bow() were added as functionality to get a gensim LDA model (prepared in Python) back to an R session.

PolMine/topicanalysis documentation built on March 6, 2020, 10:38 p.m.