Infomat: Visualizing and Exploring Vector Space Model Data Matrixes
2009 (English)Article in journal (Refereed) Submitted
Infomat is a vector space visualization tool aimed at Information Retrieval.It presents information stored in a matrix, such as the term-document-matrix, as arectangular picture. The opacity of each pixel is proportional to the weight(s) of thecorresponding matrix element(s).Reordering the objects of the rows and columns makes different distributional patternsappear. These can be explored to understand the relations (similarities and differences)between the objects. Infomat allows the user to zoom in and out of the pictureto obtain more detailed information, to remove objects and matrix elements, to reweightthe matrix, and to cluster all, or a part of the objects. At the same time textualinformation is presented.Infomat provides an overview of the content of the entire data and parts of it. Inparticular, text clustering results become easier to grasp, than when presented only intextual form.
Place, publisher, year, edition, pages
Computer and Information Science
IdentifiersURN: urn:nbn:se:kth:diva-10128OAI: oai:DiVA.org:kth-10128DiVA: diva2:209248
QS 201203152009-03-242009-03-242012-03-15Bibliographically approved