Data-driven robust optimization for the itinerary planning via large-scale GPS data

Increasing processing capabilities and input/output constraints of supercomputers have increased the use of co-processing approaches, i.e., visualizing and analyzing data sets of simulations on the fly. We present a method that evaluates the importance of different regions of simulation data and a data-driven approach that uses the proposed method to accelerate in-transit co-processing of large-scale simulations. We use the importance metrics to simultaneously employ multiple compression methods on different data regions to accelerate the in-transit co-processing. Our approach strives to adaptively compress data on the fly and uses load balancing to counteract memory imbalances. We demonstrate the method’s efficiency through a fluid mechanics application, a Richtmyer–Meshkov instability simulation, showing how to accelerate the in-transit co-processing of simulations. The results show that the proposed method expeditiously can identify regions of interest, even when using multiple metrics. Our approach achieved a speedup of 1.29× in a lossless scenario. The data decompression time was sped up by 2× compared to using a single compression method uniformly.

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Automated Data-Driven Generation of Personalized Pedagogical Interventions in Intelligent Tutoring Systems

International Journal of Artificial Intelligence in Education ◽

10.1007/s40593-021-00267-x ◽

2021 ◽

Author(s):

Ekaterina Kochmar ◽

Dung Do Vu ◽

Robert Belfer ◽

Varun Gupta ◽

Iulian Vlad Serban ◽

...

Keyword(s):

Machine Learning ◽

Student Performance ◽

Language Processing ◽

Intelligent Tutoring Systems ◽

Large Scale ◽

Intelligent Tutoring ◽

Performance Outcomes ◽

Data Driven ◽

Personalized Feedback ◽

Tutoring Systems

AbstractIntelligent tutoring systems (ITS) have been shown to be highly effective at promoting learning as compared to other computer-based instructional approaches. However, many ITS rely heavily on expert design and hand-crafted rules. This makes them difficult to build and transfer across domains and limits their potential efficacy. In this paper, we investigate how feedback in a large-scale ITS can be automatically generated in a data-driven way, and more specifically how personalization of feedback can lead to improvements in student performance outcomes. First, in this paper we propose a machine learning approach to generate personalized feedback in an automated way, which takes individual needs of students into account, while alleviating the need of expert intervention and design of hand-crafted rules. We leverage state-of-the-art machine learning and natural language processing techniques to provide students with personalized feedback using hints and Wikipedia-based explanations. Second, we demonstrate that personalized feedback leads to improved success rates at solving exercises in practice: our personalized feedback model is used in , a large-scale dialogue-based ITS with around 20,000 students launched in 2019. We present the results of experiments with students and show that the automated, data-driven, personalized feedback leads to a significant overall improvement of 22.95% in student performance outcomes and substantial improvements in the subjective evaluation of the feedback.

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Data-Driven Energy Use Estimation in Large Scale Transportation Networks

Proceedings of the 2nd ACM/EIGSCC Symposium on Smart Cities and Communities - SCC '19 ◽

10.1145/3357492.3358632 ◽

2019 ◽

Author(s):

Bin Wang ◽

Cy Chan ◽

Divya Somasi ◽

Jane Macfarlane ◽

Eric Rask

Keyword(s):

Large Scale ◽

Energy Use ◽

Transportation Networks ◽

Data Driven

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Improving the management of type 2 diabetes through large-scale general practice: the role of a data-driven and technology-enabled education programme

BMJ Open Quality ◽

10.1136/bmjoq-2020-001087 ◽

2021 ◽

Vol 10 (1) ◽

pp. e001087

Author(s):

Tarek F Radwan ◽

Yvette Agyako ◽

Alireza Ettefaghian ◽

Tahira Kamran ◽

Omar Din ◽

...

Keyword(s):

Type 2 Diabetes ◽

Primary Care ◽

Large Scale ◽

Education Programme ◽

Educational Programme ◽

Data Driven ◽

Treatment Targets ◽

Care Processes ◽

Data Driven Approach

A quality improvement (QI) scheme was launched in 2017, covering a large group of 25 general practices working with a deprived registered population. The aim was to improve the measurable quality of care in a population where type 2 diabetes (T2D) care had previously proved challenging. A complex set of QI interventions were co-designed by a team of primary care clinicians and educationalists and managers. These interventions included organisation-wide goal setting, using a data-driven approach, ensuring staff engagement, implementing an educational programme for pharmacists, facilitating web-based QI learning at-scale and using methods which ensured sustainability. This programme was used to optimise the management of T2D through improving the eight care processes and three treatment targets which form part of the annual national diabetes audit for patients with T2D. With the implemented improvement interventions, there was significant improvement in all care processes and all treatment targets for patients with diabetes. Achievement of all the eight care processes improved by 46.0% (p<0.001) while achievement of all three treatment targets improved by 13.5% (p<0.001). The QI programme provides an example of a data-driven large-scale multicomponent intervention delivered in primary care in ethnically diverse and socially deprived areas.

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