Kendall Rank Correlation Let (X1, Y1), · · · , (Xn, Yn) be a bivariate random sample of size n. The Pearson correlation coefficient provides an optimal measure of the degree of association between the X’s and the Y ’s when the sample is drawn from a bivariate normal distribution. The Pearson correlation coefficient is reasonably robust for many other distributions as well. The Kendall correlati...

BACKGROUND Per United Nations' Sustainable Development Goals, Nepal is aspiring to achieve universal and equitable access to safe and affordable drinking water and provide access to adequate and equitable sanitation for all by 2030. For these goals to be accomplished, it is important to understand the country's geographical heterogeneity and inequality of access to its drinking-water supply and...

We apply the Artificial Immune System (AIS) technology to the Collaborative Filtering (CF) technology when we build the movie recommendation system. Two different affinity measure algorithms of AIS, Kendall tau and Weighted Kappa, are used to calculate the correlation coefficients for this movie recommendation system. From the testing we think that Weighted Kappa is more suitable than Kendall t...

For a given bivariate survival function F, we study the relations between the set of the level curves of F and the Kendall distribution. Then we characterize the survival models simultaneously admitting a specified Kendall distribution and a specified set of level curves. Attention will be restricted to exchangeable survival models. 2009 Elsevier Inc. All rights reserved.

Ice-rich permafrost thaws as a result of Arctic warming, and the land surface collapses to form characteristic thermokarst landscapes. Thermokarst landscapes can bring instability layer, affecting regional geomorphology, hydrology, ecology may further lead degradation greenhouse gas emissions. Field observations in regions are often limited, while satellite imagery provides valuable record dyna...

Aquifers providing groundwater for agriculture are in many cases unsustainably managed, resulting environmental degradation and socioeconomic impacts. In this context, strategies that contribute to recovering reserves satisfactorily maintaining irrigation essential. Los Arenales Aquifer (Spain) experienced a dramatic decline level the last quarter of 20th century due intensive agricultural abst...

In order to better understand the extent which global climate variability is linked long-term mean and extreme sea level patterns, correlations between average levels at coastal sites throughout North America low-frequency oscillations of several indices (CIs) were analyzed for entire period 1948–2018 as well three equal-length sub-periods using correlation analysis. Correlation strength was as...

Climate change and variability, particularly which of the annual rainfall, has received a great deal interest to researchers worldwide. The extent variability rainfall varies according locations. Consequently, investigating dynamics variable in perspective changing climate is important evaluate impact adapt potential mitigation strategies. To gain insight, trend analysis been employed inspect q...