A Decentralized Architecture for Sharing and Reusing Lifelogs.

Nowadays, there are growing number of devices and applications that assist user in her day-to-day activities. These devices and applications collect and store enormous amount of information about user’s daily lives clickstreams, events, interests, etc. These life-logs are valuable data source for enriching user modeling when shared and reused across applications and devices. While many frameworks and solutions have been proposed for user model sharing and reuse, most existing solutions follow centralized architectural approach where the data is collected from the various sources and stored on a central server before it is shared with the user-adaptive application. However, centralized server can become a single point of failure and can be a ready target for hackers. In this paper, we describe a decentralized approach for multi-application life-logs sharing and reuse. We outline the essential components of a decentralized user life-logs sharing across applications and services on the web.