Abstract Privacy preserving methods supporting for data aggregating have attracted the attention of researchers in multidisciplinary fields. Among advanced methods, differential privacy (DP) has become an influential mechanism owing to its rigorous guarantee and high utility. But DP no limitation on bound noise, leading a low-level Recently, investigate how while limiting relative error fixed b...

This paper develops a new test statistic for parameters defined by moment conditions that exhibits desirable relative error properties the approximation of tail area probabilities. Our statistic, called tilted exponential tilting (TET) is constructed estimating certain cumulant generating functions under weights. We show asymptotic p -value TET can provide an accurate to infeasible saddlepoint ...

Rainfall-induced soil erosion of a mountain area plays a significant role in supplying sediment and shaping the landscape. The related area of soil erosion, as an index of the changed landscape, is easier to calculate visually using some popular imaging tools. By image analysis, our work shows that the changing of the soil erosion area admits the structure of an S-growth curve. Therefore, we pr...

PURPOSE Prostate cancer brachytherapy relies on an accurate spatial registration between the implant needles and the TRUS image, called "calibration". The authors propose a new device and a fast, automatic method to calibrate the brachytherapy system in the operating room, with instant error feedback. METHODS A device was CAD-designed and precision-engineered, which mechanically couples a cal...

Based on the application of the power batteries, this paper uses a statistical method to estimate the internal resistance and open-circuit voltage of Ni-MH battery. Battery status is monitored and simulated by battery pack test bench. Through using ideal battery model and fitting the data of measured voltage and current, the battery internal resistance and open-circuit voltage are estimated. Th...

Abstract. Some obstacles create vulnerable situations in financial market. Overcome this unexpected situation, it is essential to reform the financial market by measuring the risk of share market. This project investigates the sensitivity of radial basis functions to construct different volatility surface by radial basis function approaches to understand the risk of share market. Different type...

The ratio-type estimators have been introduced for estimating the mean and total population, but in recent years based on the ratio methods several estimators for population variance have been proposed. In this paper two families of estimators have been suggested and their approximation mean square error (MSE) have been developed. In addition, the efficiency of these variance estimators are com...