scholarly journals A Regularized Mixture of Linear Experts for Quality Prediction in Multimode and Multiphase Industrial Processes

2021 ◽  
Vol 11 (5) ◽  
pp. 2040
Author(s):  
Francisco Souza ◽  
Jérôme Mendes ◽  
Rui Araújo

This paper proposes the use of a regularized mixture of linear experts (MoLE) for predictive modeling in multimode-multiphase industrial processes. For this purpose, different regularized MoLE were evaluated, namely, through the elastic net (EN), Lasso, and ridge regression (RR) penalties. Their performances were compared when trained with different numbers of samples, and in comparison to other nonlinear predictive models. The models were evaluated on real multiphase polymerization process data. The Lasso penalty provided the best performance among all regularizers for MoLE, even when trained with a small number of samples.

2021 ◽  
pp. OP.21.00198
Author(s):  
Chelsea K. Osterman ◽  
Hanna K. Sanoff ◽  
William A. Wood ◽  
Megan Fasold ◽  
Jennifer Elston Lafata

Emergency department visits and hospitalizations are common among people receiving cancer treatment, accounting for a large proportion of spending in oncology care and negatively affecting quality of life. As oncology care shifts toward value- and quality-based payment models, there is a need to develop interventions that can prevent these costly and low-value events among people receiving cancer treatment. Risk stratification programs have the potential to address this need and optimally would consist of three components: (1) a risk stratification algorithm that accurately identifies patients with modifiable risk(s), (2) intervention(s) that successfully reduce this risk, and (3) the ability to implement the risk algorithm and intervention(s) in an adaptable and sustainable way. Predictive modeling is a common method of risk stratification, and although a number of predictive models have been developed for use in oncology care, they have rarely been tested alongside corresponding interventions or developed with implementation in clinical practice as an explicit consideration. In this article, we review the available published predictive models for treatment-related toxicity or acute care events among people receiving cancer treatment and highlight challenges faced when attempting to use these models in practice. To move the field of risk-stratified oncology care forward, we argue that it is critical to evaluate predictive models alongside targeted interventions that address modifiable risks and to demonstrate that these two key components can be implemented within clinical practice to avoid unplanned acute care events among people receiving cancer treatment.


2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Xianglin Zhu ◽  
Khalil Ur Rehman ◽  
Wang Bo ◽  
Muhammad Shahzad ◽  
Ahmad Hassan

2021 ◽  
pp. 240-271
Author(s):  
Sarosh Kuruvilla

This chapter studies specific ways in which opacity can be reduced — through the use of niche institutions, by stimulating the internalization goals of private regulation, and through fostering a critical mindset. It draws attention to the varieties of transparency required and specifically to the integration and inclusion of workers in private regulation programs to stimulate internalization of goals, especially through worker participation in compliance auditing and through methods such as surveys by which workers' perspectives are heard. The chapter then highlights the need for more data sharing, data analysis, and predictive modeling and concludes with specific recommendations for the variety of actors in private regulation to move the institutional field from opacity to transparency. Only through data analysis can we generate the predictive models that allow for evidence-based decision making and identification of other means by which the coupling of private regulation programs with worker outcomes can be increased. Ultimately, workers and trade unions, in what has been called contingent coupling, can help “shrink the gap between practices and outcomes” for workers by leveraging the private regulation policies of brands.


Author(s):  
Iftikhar U. Sikder

Geospatial predictive models often require mapping of predefined concepts or categories with various conditioning factors in a given space. This chapter discusses various aspects of uncertainty in predictive modeling by characterizing different typologies of classification uncertainty. It argues that understanding uncertainty semantics is a perquisite for efficient handling and management of predictive models.


2013 ◽  
Vol 80 (1) ◽  
pp. 42-45 ◽  
Author(s):  
Andrea Cestari

Predictive modeling is emerging as an important knowledge-based technology in healthcare. The interest in the use of predictive modeling reflects advances on different fronts such as the availability of health information from increasingly complex databases and electronic health records, a better understanding of causal or statistical predictors of health, disease processes and multifactorial models of ill-health and developments in nonlinear computer models using artificial intelligence or neural networks. These new computer-based forms of modeling are increasingly able to establish technical credibility in clinical contexts. The current state of knowledge is still quite young in understanding the likely future direction of how this so-called ‘machine intelligence’ will evolve and therefore how current relatively sophisticated predictive models will evolve in response to improvements in technology, which is advancing along a wide front. Predictive models in urology are gaining progressive popularity not only for academic and scientific purposes but also into the clinical practice with the introduction of several nomograms dealing with the main fields of onco-urology.


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