I have been a fan of this educational offering for a while now, and I have been mentioning that for a while now, too. But I am moved to say it again, because I’m planning a four-session Intro to Python training for aspiring Health Metrics Scientists, and the SWC curriculum is making that so easy. It could have been so hard. ❤ u SWC.
Monthly Archives: October 2018
Some papers from this summer’s SummerSim (editor’s note: summer-before-last) are available online now:
- Untangling Uncertainty with Common Random Numbers: A Simulation Study
- Microsimulation Models for Cost-Effectiveness Analysis: A Review and Introduction To CEAM
I sat-in on a CSE seminar recently, where a big crowd is exploring the state of the art in human-and-computer-together intelligence. It was really fun. The topic was a discussion of a paper on human/computer collaboration from the 1990s:
Grosz, B. J. (1996). Collaborative systems (AAAI-94 presidential address). AI magazine, 17(2), 67.
But just as fun as the classic article and discussion it inspired, was an even older vision of what digital assistants might be, from Apple in the 1980s:
I left thinking that a knowledge navigator like the one Apple envisioned is not really collaboration, but when it makes the Brazil and Sahara simulations work together, that might be collaboration. But to be a true collaborator, both agents need to want something (or “desire” something?) for themselves.
I hope I have time to attend again soon.
I’m not sure this list is useful, but at least I’ll find it when I next search:
I read random papers once in a while from the AMS Math Reviews program, and I read one recently about an MCMC approach to X-ray imaging. It was a fun, detailed look at a few different ways to do sampling, and use effective sample size to figure out which worked better when.
It did also leave me wondering what the giant X-ray machines buried 1,000 feet underground are for, though.
This turned out to be a bit of a downer, but it was a good learning exercise, and the general approach will be useful for generating test data on a different project. See notebook here.
This was about 2 hours of fuss that I wish I had avoided. With my updated Jupyter Notebooks, I need to be explicit about what conda environment for python I am using.
It is all laid out clearly, if only I had been looking in this bit of the IPython docs:
For example, using conda environments, install a
Python (myenv) Kernel in a first environment:
source activate myenv python -m ipykernel install --user --name myenv --display-name "Python (myenv)"
And in a second environment, after making sure ipykernel is installed in it:
source activate other-env python -m ipykernel install --user --name other-env --display-name "Python (other-env)"
Just because I missed posting for the last year, doesn’t mean I have not been writing. Perhaps I have been writing more. Here is something that I just wrote for a perspective on opportunities for machine learning in population health.
Machine learning (ML) is emerging as a technology, climbing the “peak of inflated expectations” or perhaps even starting to slip into the “trough of disillusionment”, in the terms of the technology hype cycle,[ref] and offers both opportunities and threats to population health. ML is a technique for constructing computer algorithms, and what distinguishes ML methods from other computer solutions is that, while the structure of the computer program may be fixed, the details are learned from data. This data-driven approach is now dominant in Artificial Intelligence (AI), especially through deep neural networks, and stands in contrast to the old way, an expert-algorithms approach in which rules summarizing expert knowledge were painstakingly constructed by engineers and domain specialists. ML has succeeded by trading experts and programmers for data and nonparametric statistical models. However, the applications where ML has been successfully deployed remain limited. AI luminary Andrew Ng provides this concise heuristic: “[i]f a typical person can do a mental task with less than one second of thought, we can probably automate it using AI either now or in the near future.”[ref]
The editor only wants 1,000 words, so this is getting cut.
There is a new sort of publication model in Global Health, and I just gave it a try (editor’s note: just = in the last year). Gates Open Research offers “author-led publication and open peer review”, and is available now to Gates Foundation-funded researchers.
I used it to publish a Data Note, which is a dataset together with a short description of what is in the dataset.
Have a look here: https://gatesopenresearch.org/articles/2-18/v1
Just before that year of not writing anything here, I mentioned that I have a new microsimulation platform, and it is called Vivarium. That is still true, and now it even has some documentation: https://vivarium.readthedocs.io/en/latest/
It has been the thing that kept me too busy to blog for the last year. But it did generate some aesthetically pleasing figures for test purposes, as well as some population health results of interest. More details to come.