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 Experimental comparisons of data entry by automated speech recognition, keyboard, and mouse.

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raj_mmm9



Number of posts : 1850
Age : 55
Registration date : 2008-03-08

PostSubject: Experimental comparisons of data entry by automated speech recognition, keyboard, and mouse.   Sun 6 Apr - 14:23

Two characteristics of any mode of data entry are crucial to determining its efficacy: speed of entry and error rate. At first glance the speed of human speech would suggest that automatic speech recognition (ASR) technology must revolutionize data entry However, experience with ASR quickly reveals that error rates can be high and that error correction procedures are time consuming. More experience shows that error rates and error correction delays can drop dramatically as the user and the recognizer adapt to each other. The current study aims to establish heuristics, at least for routine data entry tasks, that specify the parameters that determine when and how ASR may offer an advantage.

Two questions must be answered to give a picture of the usefulness of ASR: How quickly do error rates decline to an acceptable level, and what rates of data entry can be obtained when error rates are acceptably low? If the answer to the second question reveals that the best rates of data entry by ASR are slower than those of other means, then ASR will be limited to applications for which rapid data entry is not a primary consideration, and the first question is worth considering only in those contexts. Consequently, we designed our experiments specifically to answer the second question -- that is, the dependent variable in each experiment is the time to enter an item correctly on the first attempt. The use of such data to represent the best times obtainable with ASR depends on an assumption that the effects of the mutual adaptation of user and recognizer are limited to error rates and error correction. Pilot work supported this assumption, and further strong support is provided by data from the phrases experi men
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Experimental comparisons of data entry by automated speech recognition, keyboard, and mouse.
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