[Population Modeling] Introduction

[Hyder, Ayaz]

Hi All

Thanks for the welcome Jacob. I work mainly with agent-based models where the assumptions and parameters are quite big compared to statistical models in public health and epidemiology. My approach to parameter estimation involves optimization algorithms such as Simplex but sometimes I can optimize the model and do a two-step grid search (rough and then fine scale). I use the local supercomputers so it works out. As for selecting model parameters, I start off with identifying conceptual models from the published literature and querying domain experts.

Thanks

Ayaz Hyder, PhD
Assistant Professor, Division of Environmental Health Sciences
Affiliated Faculty, Translational Data Analytics
College of Public Health, The Ohio State University
614-247-4936 | http://cph.osu.edu/people/ahyder

On Oct 8, 2015, at 10:26 PM, Jacob Barhak <jacob.barhak at gmail.com<mailto:jacob.barhak at gmail.com>> wrote:


Welcome Ayaz,

There are several interesting discussions taking place regarding estimation and assumptions. You can find these in our archives:
https://simtk.org/pipermail/popmodwkgrpimag-news/

What is your approach regarding parameter estimation? Do you rely on human decision making when selecting parameters, or do you strictly use numerical techniques after models structure is determined?

Also what kind of modeling assumptions do you usually take?

Your infectious disease modeling papers deal with validation. It would be interesting to learn about your modeling assumption process.

        Jacob

On Oct 8, 2015 8:43 PM, "Hyder, Ayaz" <hyder.22 at osu.edu<mailto:hyder.22 at osu.edu>> wrote:
Hello Everyone
I am a new faculty member at the College of Public Health, Ohio State University. I stumbled across this group by accident and I’m very glad that I did. I’ve mentioned a little more about my research below and look forward to fruitful discussions with fellow modelers.

My research focuses on understanding the role of multiple determinants of human health (environment, social, biology) operating at multiple levels (individual, neighborhood, regional). I use mathematical and computational approaches (e.g. systems science methods) to bring together theory, data and methods from multiple disciplines. In the past I’ve worked on a microsimulation model for esophageal cancer and cost-effectiveness analysis (manuscript under review), satellite-based air pollution exposure assessment and birth outcomes (paper<http://www.ncbi.nlm.nih.gov/pubmed/24240652>), and predictive validation of agent-based models for influenza (paper 1<http://www.ncbi.nlm.nih.gov/pubmed/23755236>, paper 2<http://www.ncbi.nlm.nih.gov/pubmed/25979284>).

Current areas of research include complex systems models to predict childhood asthma, the integration of agent-based models of residential segregation and coupled economic-disease models of poverty traps, predictive models of infant mortality, and agent-based models of the food environment in Columbus, Ohio. I am also interested in philosophical discussions surrounding “Big Data” and what we mean by “model”.

I am currently looking for funding opportunities to fund my research ideas and I am open to collaborations. I would be happy to receive resumes of potential graduate students and postdocs interested in working in my research group.

Thanks

Ayaz Hyder, PhD
Assistant Professor, Division of Environmental Health Sciences
Affiliated Faculty, Translational Data Analytics
College of Public Health, The Ohio State University
614-247-4936 | http://cph.osu.edu/people/ahyder




_______________________________________________
PopModWkGrpIMAG-news mailing list
PopModWkGrpIMAG-news at simtk.org<mailto:PopModWkGrpIMAG-news at simtk.org>
https://simtk.org/mailman/listinfo/popmodwkgrpimag-news


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://simtk.org/pipermail/popmodwkgrpimag-news/attachments/20151026/c33e3e4d/attachment.html>