Repository logo

Browsing by Author "Vassileva, Julita"

Now showing 1 - 4 of 4
  • Thumbnail Image
    Item
    No more isolated files: managing files as social artifacts
    (2006) Indratmo, Indratmo; Vassileva, Julita
    People manage and use their files/documents in social settings. However, current file systems do not consider social interactions that happen around files. For example, files that have been sent to many people are displayed in the same way as those that have never been sent. We argue that by capturing user activities around files, we can enhance user experience in managing their documents. In particular, presenting activity traces can help users comprehend their document collections better and recall the context of their documents. In this paper, we discuss our approach to providing a context-rich environment for document management.
  • Thumbnail Image
    Item
    A review of organizational structures of personal information management
    (2008) Indratmo, Indratmo; Vassileva, Julita
    Personal information management (PIM) covers a large area of research fragmented into separate sub-areas such as file management, web bookmark organization, and email management. Consequently, it is hard to obtain a unified view of the various approaches to PIM developed in these different sub-areas. In this article, we synthesize and classify existing research on PIM based on the approach used to organize information items. We classify the organizational structures into five categories: hierarchical, flat, linear, spatial, and network. We discuss the strengths and weaknesses of each structure along with examples showing how to deal with the weaknesses. Finally, we provide design recommendations and a framework for researchers to experiment with various ideas for developing novel PIM tools.
  • Thumbnail Image
    Item
    The role of social interaction filter and visualization in casual browsing
    (2012) Indratmo, Indratmo; Vassileva, Julita
    Traces of social interaction in information spaces have the potential to improve information exploration. We evaluated interactive interfaces that utilize social interaction history. More specifically, we compared the value of a social filter and social interaction visualization in supporting casual browsing. We hypothesized that information filtering in general plays a more important role than visualization, as it provides additional control for users to browse information collections. Our experimental results showed that, compared to the baseline interface, the social filter increased subjective user satisfaction and was perceived by the study participants to enhance their effectiveness in finding interesting information. However, there were no significant differences between the social filter and social visualization systems. Our analysis suggested that the synergy of information filtering and visualization is more effective than each feature working separately.
  • Thumbnail Image
    Item
    A usability study of an access control system for group blogs
    (2007) Indratmo, Indratmo; Vassileva, Julita
    Blogs are a medium to express thoughts, feelings, and opinions. Once published, blog articles potentially become persistent and can be read by non-intended audiences, causing hurt feelings and other troubles. In part these problems are due to the lack of access control in blogs. We propose an access control framework for group blogs. Compared to the typical access control in blogging tools, our system differs in a few aspects. First, the system enables bloggers to grant different access privileges to different audiences over a single blog article. That is, it associates access privileges to people rather than to artifacts (e.g., articles, blogs). Second, the system allows a blogger to create a collaborative space with other bloggers, for example by allowing others to edit his or her articles. Third, the management of access control is integrated with the process of writing and editing blog articles, facilitating the main workflow of the user. We conducted a usability study to evaluate our system and get constructive feedback from users. In this article, we present the proposed access control system, the results of the study, and analysis of the results.