According to Jensen's inequality [ 39], this will make variance reduction a bad strategy.
Intra-hot spot variance is good news and bad news to crime scientists and crime analysts.
First, three mathematical models are proposed by defining divergence as cross-entropy, average return as expected value and risk as variance, semivariance and chance of bad outcome, respectively.
As a consequence, in a situation of non-stationary noise signal with the time-varying variance, their efficiency should be bad [7, 24].
In stochastic environment, variance, semivariance and probability of a bad outcome are three popular definitions of risk for portfolio selection.
The irregular shape of the histogram in Figure 2A (reflecting heterogeneity of this particular data set) does not affect our conclusion because both the mean value and the variance tend to be smaller for bad probe sets.
When the channel is in a good state, the signal is impaired only by background AWGN with variance equal to σ2, whereas, when in bad state, it is also impaired by impulsive noise.
Peer graders give more accurate scores on good exams than bad ones, they found, and the lower the score, the more variance among graders.
A correspondence analysis of the 3.000 genes with the highest variance showed clear clustering of patients with good or bad prognosis, respectively.
The explained variance was highest when the variables dental visits, bleeding gums, bad breath, food impaction and satisfaction with appearance were introduced into the model (19%).
Because poker is a game of high variance, where a significant difference in ability can be mitigated by a bad run of cards, a player's Expected Value (E.V).
