2009 Volume 11 Issue 2 Pages 213-222
In this paper, we propose a method for finding the user's target function from the user's sequential operations of Audio Visual home appliances when it is difficult for the users to operate them. We get user's selected menu label history of DVD/HDD recorder that is one of the Audio Visual appliances, and we simulate a precision to find a target function by conventional method based on label following strategy. As a result, it is clear that the conventional method cannot find user's target function at enough precision. The reason is the user's operation is not a unique strategy. Operation of Audio visual home appliance consists of two decisions. One is decision of function and another is decision contents. We classify the user's operation to two types by the order of decision of the functions and the contents. Those are called by a function oriented operation and a contents oriented operation. We improve the method based on label following strategy by judging each two operations. We confirmed the effectiveness of the proposed method using selected menu label history data derived from 8 kinds of tasks by 6 operators. As a result, the ratio of the target function in the top 10-candidates improved to 26.3% comparing with the conventional method.
