By taking into account the influences of the total number of particles n in the solution, the probability of reaction P\-s and the probability of directional excursion P\-d, the fractal growth of ultrathin films via electrodeposition was simulated by means of Monte Carlo method.

The reasons to the oriented drift of Millikan oil-drop provided in some articles are questioned, and the analysis and adjustment method on the reason are introduced.

Design of ensemble classifiers for mining concept drifts from data streams;

Reduction of low frequency concepts in the concept drift based on the frequency

And it can exactly and quickly trace the concept drift of people s interests to realize personalization.

In the algorithm, measure of real time detecting on the concept drifting is used through the definition of confidence interval for level of fitness,on the basis of the most recent data chunk,every base learning machine is updated one by one iteratively.

However, the data collected from the real world will change over a period of time in the underlying concepts (known as concept drifting).

Our skewed-data stream intrusion detection algorithm uses the interval estimation and the AUC(area under curve) value to detect concept drifting if any and update the classifier.