Calliope is one of those different types of text mining tools, being more of a text synthesizer that can rapidly read massive amounts of unstructured text. Calliope cannot be used for web data analytics since it has no ability to crawl the internet pages. Rather, it is ideal for companies with disparate, but related internal sources of text that need multiple analyses. Continuous Calliope-processing of various repositories of text is encouraged to further refine the discovery of trends and attributes that may not have been previously evident.
Still Takes Human Intellect
The Calliope process requires a certain amount of human interaction by subject matter experts who will determine the relevancy and applicability of extracted word/phrase lists in order to focus the analytics. Also, following the “initial pass” of text data mining, if required word lists have not resulted, users must create their own following a software-guided sequence of validation steps. Once accomplished, however, all unstructured text documents are linked to a list of validated terms and descriptions of the content of analyzed text.
Co-Words
The heart of the Calliope text analytics software is the module where indexing algorithms are applied to determine the relationship of words that are “thematically homogeneous.” This likely means the text analytics tools utilize not only a dictionary, but also a thesaurus. These analogous terms are called “co-words” which are related words found within the body of analyzed text that are both 1) linked by the same topic thread, and 2) that frequently recur within it.
Categories
Repeated textmining on different document collections refines the results and computes a figure of merit that indicates the frequency of usage of the words discovered during the co-word identification step. The thematic relationship of words are categorized as “emerging,” which is an increase in significance over several analytical processes, or “declining” if they are not important over time. The only drawback to Calliope is platform availability, since it can only be used on Windows operating systems.
Software
Click on this link to read the full review article on the Calliope text mining application.