We compared their performance using precision and recall, and found a clear trade-off between these two metrics which we further reified into a third objective function based on Fβ, an information retrieval measure, that showed a clear performance improvement.
The system uses an information retrieval measure based on term cooccurrence for ranking.
The non-users also expressed significantly less interest in further training in information retrieval, measured with the totaled scale of applications to be further studied, gaining a median of 2.0 vs. 3.0 (Mann Whitney U-test, p = 0.001).
In addition to the information retrieval measurements, we also calculated the even more significant measure: (26).
We use these established information-retrieval measures, using repeatable methodology, so our results can be directly compared to future studies.
Standard information retrieval performance measures are used in the comparison, and it is shown that the timbre-related feature performs best.
In this study we choose to evaluate subjective responses rather than standard information retrieval objective measures such as precision and recall or time to find a relevant article.
Information retrieval by measuring the velocity of sound is the only method among the methods described in this study that depends on mechanical energy fluctuations.
