in data set 'airquality' to create test and train data df = airquality[airquality.Ozone.notnull()] df["Ozone"] = df.Ozone.astype(float) data_train, data_test, y_train, y_test = train_test_split(df, df.Ozone) airFormula = " Ozone ~ Solar_R + Wind + Temp " # Regression Fast ...
\[IV(S,a)=-\sum_{v\in values(a)}{\frac{|x\in S|value(x,a)=v|}{|S|}*log_2(\frac{|x\in S|value(x,a)=v|}{|S|})} \] 这个公式怎么理解呢? S就是数据集样本,\(|S|\)就是样本数量; a是某一个特征,比方说Outlook或者是Wind,然后\(v\in values(a)\)就是v就是a这个特征...
In Norway, a wind energy yield of 14.81 TWh was achieved during 2022 with 5.062 GW of installed capacity [2]. Higher renewable energy penetration in the national grid will be an important step in electricity decarbonization [3], but remote areas might struggle to access cleaner grid power. ...
Which are the winner and loser shrub species in a warming tundra and what are their trait combinations? Tall plants with wind-dispersed seeds are usually more competitive as they have facilitated seed dispersal and shade shorter plants51. We expect winners to be mainly tall shrubs, given that ...
En general, estos modelos consideran distintas maneras de cómo trabajar la variable respuesta, por ejemplo la exponenciación de la respuesta usando la transformación log-gamma28. Regresión Adaptativa Multivariada (MARS) MARS es una metodología propuesta por Friedman29 en el año 1991, que ...
Witnessing another’s pain can heighten pain in the observer. However, research has focused on the observer’s intrapersonal experience. Here, a social transmission-chain explored the spread of socially-acquired nocebo hyperalgesia. Dyads of genuine part
The insulated gate bipolar transformer (IGBT) has been widely used in power electrical system such as wind power converter and drive converter. However, the high load and capricious working environment make IGBT become the most vulnerable component in the electrical system. In this paper, a method...
Log In Sign Up Subjects Science How might the PAR model be used to not only predict but also respond to hazards/disasters?Question:How might the PAR model be used to not only predict but also respond to hazards/disasters?PAR Model:...
Regional wind power probabilistic forecasting based on an improved kernel density estimation, regular vine copulas, and ensemble learning 2022, Energy Citation Excerpt : The results in Fig. 4 and Table 1 indicate that bandwidth optimization is the most important KDE function, and that IKDE can obta...
financial institutions across the industry have adopted a wide variety of analytical integrated development environments (“IDEs”) and analytical platforms (e.g., SAS®, R, Python®, MATLAB®, C++, C#, Java®, Quantitative Risk Management (QRM), Bancware®, Bloomberg®, Wind Informatio...