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Some existing nonparametric two-sample tests for equality of multivariate distributions perform unsatisfactorily when the two sample sizes are unbalanced. In particular, the power of these tests tends to diminish with increasingly unbalanced sample sizes. In this article, we propose a new...
Persistent link: https://www.econbiz.de/10010824058
This paper studies a class of exponential family models whose canonical parameters are specified as linear functionals of an unknown infinite-dimensional slope function. The optimal minimax rates of convergence for slope function estimation are established. The estimators that achieve the...
Persistent link: https://www.econbiz.de/10009246860
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We put forward a quick clustering method for large numbers of data, with high dimensions, which is based on sensitive subspace consisting of the data set's sensitive dimensions. We first estimate the probability density of each dimension by the parzen window algorithm, enhance its optional...
Persistent link: https://www.econbiz.de/10004977610
Although access to quality education in rural China has expanded dramatically over the past 3 decades, significant disparities persist between ethnic minorities and the Han majority. This article compares the academic achievement and determinants of achievement of minority and Han students in...
Persistent link: https://www.econbiz.de/10011099469
We have examined the volatility and macroeconomic drivers of venture capital (VC) investments in the past 17 years from 1995 to 2011. We find that VC investments in the United States (US) by the total amount, by the number of deals, and by the average amount per deal are significantly affected...
Persistent link: https://www.econbiz.de/10011154859
This paper presented a case study on performance analysis of ground water-source heat pump system (GWHP) for a hotel building retrofit. Splitting air-conditioner was used for cooling and coal fired boiler was used for heating in original system. The GWHP system could save electricity energy and...
Persistent link: https://www.econbiz.de/10011263760
This paper explores the role of financial frictions in accounting for agricultural productivity differences. A two-sector general equilibrium model with a subsistence consumption requirement and financial frictions is constructed to explain and quantify the importance of financial frictions in...
Persistent link: https://www.econbiz.de/10011081623
Positive-displacement expanders, which are widely used in small-scale ORCs (Organic Rankine Cycles), need reliable LOS (Lubricant Oil Supply) to get well lubrication and sealing. In the present paper, the characteristics of two traditional LOS schemes are examined. Moreover, a modified one is...
Persistent link: https://www.econbiz.de/10011117636