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New activity recognition algorithms that can cooperate with the proposed activity framework and model are proposed. To be practical, activity recognition technology should also be programmable. The hierarchical aspects of our generic activity framework help to improve activity recognition programmability. The generic activity framework decouples the observation subsystem (i.e., the sensor set) from the rest of the activity model. The authors demonstrate the value of this decoupling by experimentally comparing the level of user effort needed in making sensor changes and the ramifications of such changes on model updates. They compare the level of effort required by the authors\u2019 model to the requirements of previously reported approaches.<\/p>","DOI":"10.4018\/jehmc.2012070105","type":"journal-article","created":{"date-parts":[[2012,8,15]],"date-time":"2012-08-15T16:08:56Z","timestamp":1345046936000},"page":"54-71","source":"Crossref","is-referenced-by-count":6,"title":["A Practical Activity Recognition Approach Based on the Generic Activity Framework"],"prefix":"10.4018","volume":"3","author":[{"given":"Eunju","family":"Kim","sequence":"first","affiliation":[{"name":"University of Florida, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sumi","family":"Helal","sequence":"additional","affiliation":[{"name":"University of Florida, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"2432","reference":[{"key":"jehmc.2012070105-0","unstructured":"Alvarez, S. A. (2002). 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