WordStat

Some features of WordStat 8http://flightsafety.org/files/Provalis_text_mining_report.pdf

• Categorization of content using user defined dictionaries.
• Classification of documents using Naïve-Bayes or k-nearest neighbor algorithms applied either on words or concepts.
• Automatic topic extraction using first order or second order hierarchical clustering and multidimensional scaling.
• Topic modeling to extract the main themes using NNMF and Factor Analysis.
• Correspondence analysis in order to identify words or concepts associated with any categorical meta-data associated with documents.
• Relate unstructured text with structured data such as dates, numbers or categorical data for identifying temporal trends or differences between subgroups or for assessing relationship with ratings or other kind of categorical or numerical data.
• Visualization tools to visualize and interpret text analysis results:
• *Dendrogram with optional bar chart
• *2D and 3D Multidimensional scaling
• *Proximity plot
• *Heatmap
• *Bubble chart
• *Bar chart, pie chart, line chart, word clouds
• *Correspondence plots ''