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Sunghae Jun
In big data analysis, various zero-inflated problems are occurring. In particular, the problem of inflated zeros has a great influence on text big data analysis. In general, the preprocessed data from text documents are a matrix consisting of the documen...
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Daiho Uhm and Sunghae Jun
Due to the expansion of the internet, we encounter various types of big data such as web documents or sensing data. Compared to traditional small data such as experimental samples, big data provide more chances to find hidden and novel patterns with big ...
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Yang Zhang, Yujia Zhai, Jihong Chen, Qingjun Xu, Shanshan Fu and Huizhen Wang
Shipping, as an important part of the global supply chain, has always been quite sensitive to maritime accidents. Fatality and injury are important metrics indicating an accident?s severity. Understanding the driving factors of fatality and injury outcom...
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Monika Arora and N. Rao Chaganty
Count data with excessive zeros are ubiquitous in healthcare, medical, and scientific studies. There are numerous articles that show how to fit Poisson and other models which account for the excessive zeros. However, in many situations, besides zero, the...
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Sohyun Park, Aram Yang, Hui Jeong Ha and Jinhyung Lee
Social mixing is one of the key objectives of the housing policy in OECD countries. The Low-Income Housing Tax Credit (LIHTC) program, the largest affordable housing construction program in the US since 1986, has recently set creating mixed-income commun...
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Mahdi Rezapour and Khaled Ksaibati
Road departure crashes tend to be hazardous, especially in rural areas like Wyoming. Traffic barriers could be installed to mitigate the severity of those crashes. However, the severity of traffic barriers crashes still persists. Besides various drivers ...
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Zhen Yang,Syed T. Ali,Farman Ali,Zahid Sarwar,Muhammad A. Khan
AbstractPurpose: Institutional theory is a reasonable explanation for the motives of corporate social responsibility (CSR) behaviours (e.g. corporate green innovation). The existing literature defines institutional pressure as threats for legitimacy when...
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Yuanyuan Zhang and Yuming Zhang
Car travel accounts for the largest share of transportation-related greenhouse gas emissions in the United States (U.S.), leading to serious air pollution and negative health effects; approximately 76.3% of car trips are single-occupant. To reduce the ne...
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Cheol-Eung Lee and Sang Ug Kim
Several natural disasters occur because of torrential rainfalls. The change in global climate most likely increases the occurrences of such downpours. Hence, it is necessary to investigate the characteristics of the torrential rainfall events in order to...
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Emily Leary, Linda J. Young, Melissa M. Jordan and Chris DuClos
(1) Background: To demonstrate the potential effects of missing exposure data and model choice on public health conclusions concerning the impact of heat waves on heat-related morbidity. (2) Methods: Using four different methods to impute missing exposur...
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