Nowcasting US GDP Using Tree-Based Ensemble Models and Dynamic Factors
Sign Up to like & getrecommendations! Published in 2021 at "Computational Economics"
DOI: 10.1007/s10614-020-10083-5
Abstract: In this study, we nowcast quarter-over-quarter US GDP growth rates between 2000Q2 and 2018Q4 using tree-based ensemble machine learning models, namely, bagged decision trees, random forests, and stochastic gradient tree boosting. To solve the ragged… read more here.
Keywords: ensemble models; based ensemble; tree based; dynamic factors ... See more keywords
Effects of dynamic factors of erosion on soil nitrogen and phosphorus loss under freeze-thaw conditions
Sign Up to like & getrecommendations! Published in 2021 at "Geoderma"
DOI: 10.1016/j.geoderma.2021.114972
Abstract: Abstract Soil erosion directly leads to the decline of soil fertility, and under hydraulic erosion, the soil nitrogen and phosphorus released by hydrolysis enter the adjacent water body along with surface runoff and soil erosion.… read more here.
Keywords: freeze thaw; soil; loss; runoff ... See more keywords
Evaluation method of ensquared energy based on dynamic factors in gene sequencing system
Sign Up to like & getrecommendations! Published in 2019 at "Optical Engineering"
DOI: 10.1117/1.oe.58.5.053102
Abstract: Abstract. In a gene sequencing system, ensquared energy is an important parameter for base-calling software. Nevertheless, the displacement between wafer and camera, which is caused by vibration and position error of the wafer stage while… read more here.
Keywords: gene sequencing; ensquared energy; dynamic factors; energy ... See more keywords