We formed the equation as follows: Then the number of all hypotheses about verb vj is recorded as n, and the number of those for scfi as m. According to Bernoulli theory, the probability P that an event with probability p exactly happens m times out of n such trials is: And the probability that the event happens m or more times is: In turn, P(m+, n, p e ) is the probability that scfi wrongly occurs m or more times with a verb that doesn't match it.
a threshold of 0.05 on this probability will yield a 95% confidence that a high enough proportion of hypotheses for scfi have been observed for the verb legitimately to be assigned scfi (Korhonen 2001).