Virtual machine monitor-based lightweight intrusion detection
ACM SIGOPS Operating Systems Review
On 3D object retrieval benchmarking
3D Research
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We investigate van Rijsbergen's F-measure, the break-even point, and 11-point averaged precision, all of which can be translated into one-dimensional scalar quantities from the precision and the recall. These investigations can be done by comparing to the tetrachoric (four-fold) correlation coefficient and phi (four-fold point) coefficient, which are often used as indices of statistical association in a 2 × 2 contingency table. The results show that when the fallout rate is less than 0.1, the F1 measure has similar properties to the phi coefficient, the break-even point is almost equivalent to the phi coefficient, and the 11-point averaged precision should be a measure which is larger than the phi coefficient and smaller than a tetrachoric correlation coefficient. © 2004 Wiley Periodicals, Inc. Syst Comp Jpn, 35(6): 42–49, 2004; Published online in Wiley InterScience (). DOI 10.1002/scj.10583