A demonstration of Cascadia through a digital diary application

Abstract

The Cascadia system provides RFID-based pervasive computing applications with an infrastructure for specifying, extracting and managing meaningful high-level events from raw RFID data. Cascadia allows users to specify events of interest using a graphical interface with an intuitive visual language. Cascadia also effectively extracts these events from data in spite of the unreliability of RFID technology and the inherent ambiguity in event extraction.We demonstrate Cascadia's technique through a digital diary application in the form of a calendar. Cascadia automatically populates the calendar with meaningful events for the user. We use data collected in a building-wide RFID deployment.

The Challenges and Issues Facing the Deployment of RFID Technology

“…By transferring these low level readings into high level events, PEEX engages in cleaning as the process of probabilistically by categorising the results of these events, and in the process, caters for missed and inaccurate readings. Currently, PEEX is being incorporated into a new a system named Cascadia where it will be utilised to help perform high level management of RFID tracking in a building environment (Khoussainova, Welbourne, Balazinska, Borriello, Cole, Letchner, Li, Ré, Suciu & Walke, 2008;Welbourne et al, 2008). Bayesian Networks have also been implemented in several studies to infer high level behaviour from the raw readings.…”

SmartCIS

“…In support of smart environments, we seek a single data access layer for integrating sensor, stream, and database data, regardless of origins. This single programming interface over heterogeneous sensors and stream sources distinguishes us from from other sensor systems [6,9,12].…”