Visualization of Tag Sequence

Tags, the user-generated metadata for web resources, have been widely used in social networking systems, such as del.icio.us, Flickr, Youtube and Facebook. Tagging technology is deserved to be studied for education because it can reveal the pattern of users¿ knowledge learning and sharing. In this paper, we analyze users' tagging activities by adopting some visualization methods upon tag sequence. The raw data we use are user-generated bookmarks and tags in del.icio.us. Due to the difficulty of investigating textual data, we use visualization methods, such as "Chromogram", to map the textual data to color-based diagrams. After applying these visualization methods, we will observe the results and propose some patterns on users¿ usage of tag.