Failing Test

[cranst0n]

When I run mvn test I get this output:

Failed tests:   testMultivariateGaussianDistribution(smile.stat.distribution.MultivariateGaussianDistributionTest): expected:<0.9> but was:<1.0042573275810218>
  testLogNormalDistribution(smile.stat.distribution.LogNormalDistributionTest): expected:<3.0> but was:<3.120146672473464>

[haifengl]

These tests are about random number generators. After generating many random numbers, we calculate the mean and standard deviations and compare them to the true parameters. As you know, there are difference due to the nature of randomness. We use 0.1 as the difference boundary in general. But it may be bigger than that sometimes. If you run it again, the error may (or may not) disappear. I will relax the error boundary so that people feel more comfortable. Thanks!