A novel cohort selection method, namely, successive cohort selection (SCS) is presented in this paper for text-independent speaker verification. The proposed method computes distance between two models directly and it selects new cohort member based on both the claimed speaker model and the existing cohort members. In addition to this new cohort selection method, we also propose a new score mea...

Soil erosion poses economic and environmental concerns in many tropical uplands. Agroforestry has been proposed as a sustainable land use that can mitigate soil erosion and promote the economic welfare of small farmers. To evaluate such claims, we must (a) develop a composite measure of effectiveness, such as a soil conservation index, and (b) define it in terms understood by the farmers who ul...

Observations of distant supernovae show that the light of supernovae Ia is dimmer than it would be in a decelerating universe. Several effects might be responsible for this phenomenon: cosmological constant, evolution of supernovae, selection bias, gravitational lensing, intergalactic dust, and influence of inhomogeneous distribution of matter on light propagation. All of these effects but the ...

We address the problem of calibration of workers whose task is to label patterns with continuous variables. An example would be labeling pictures of people with apparent age. Worker bias is particularly difficult to evaluate and correct when many workers contribute just a few labels, a situation arising typically when labeling is crowd-sourced. In the scenario of labeling short videos of people...

while ignoring income distribution and estimating aggregate demand generally leads to aggregation bias and thus, does not reflect households’ demand properly, yet aggregation bias is rarely considered in empirical demand studies and simply is ignored in most cases. the objective of the present study is to estimate aggregation bias in households’ demand for various types of meats and to evaluate...

this study investigates issues on efficiency and elasticity of broiler production in peninsular malaysia. data from 296 broiler farms were subjected to sfa, dea and bootstrap methods for technical efficiency; translog and tobit regression analyses to estimate elasticity of production and determinants of efficiency respectively in broiler production. we found that farmers produce mean efficiency...

This paper considers the problem of inferring a discrete joint distribution from a sample subject to selection. Abstractly, we want to identify a distribution p(x,w) from its conditional p(x |w). We introduce new assumptions on the marginal model for p(x), under which generic identification is possible. These assumptions are quite general and can easily be tested; they do not require precise ba...

Negative bias temperature instability (NBTI) is a well-known reliability concern for PMOS transistors. We review the literature to find seven key experimental features of NBTI degradation. These features appear mutually inconsistent and have often defied easy interpretation. By reformulating the Reaction–Diffusion model in a particularly simple form, we show that these seven apparently contradi...