Reproducibility and Extensibility in Scientific Research. Jessica Forde
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1 Reproducibility and Extensibility in Scientific Research Jessica Forde
2 Project Jupyter IPython Jupyter Notebook Architecture of JupyterHub Overview The problem of reproducibility in science Repo2docker Binder Extending research via interactive computing
3 Who are we?
4
5
6 ~2.1 Million Notebooks on GitHub jupyter-notebook? since=monthly
7
8
9 Project Jupyter Mission
10 We re not-for-profit
11 Jupyter Notebook
12 Rule et al., 2018
13 Carol Willing
14 More than Python
15
16
17
18 Yu Watanabe
19 jupyter/wiki/jupyter-kernels
20 jupyter/wiki/jupyter-kernels
21 More than Notebooks
22 HUB photo: xkcd, Jupyter, C. Willing
23 HUB JupyterHub provides a single user Jupyter Notebook server for each person in a group Similar to SWAN photo: xkcd, Jupyter, C. Willing
24 Hub: manages user accounts, authentication, and coordinates Single User Notebook Servers using a Spawner Proxy: routes HTTP requests to the Hub and Single User Notebook Servers. Spawner: starts a single-user notebook servers when a user logs in
25 Hub launches a proxy Proxy forwards all requests to Hub by default Hub handles login, and spawns single-user servers on demand Hub configures proxy to forward url prefixes to the single-user notebook servers
26 Kubernetes as Spawner
27 Kubernetes as Spawner
28 Scaling JupyterHub
29 Scaling JupyterHub
30 Scaling JupyterHub
31
32 Reproducibility
33 Atlantic Monthly, April
34 The more sophisticated science becomes, the harder it is to communicate results. Papers today are longer than ever and full of jargon and symbols. They depend on chains of computer programs that generate data, and clean up data, and plot data, and run statistical models on data. These programs tend to be both so sloppily written and so central to the results that it s contributed to a replication crisis, or put another way, a failure of the paper to perform its most basic task: to report what you ve actually discovered, clearly enough that someone else can discover it for themselves. - James Somers
35 Reproducibility: Producing similar results with the same data
36 Reproducibility: A software problem
37 GitHub Open Science Framework Technical Solutions CodaLab RunMyCode Research Journals
38 This week in xkcd
39 Reproducible scientific software pipelines Repository would contain: Data Dependencies Hyperparameters Scripts to run the jobs on similar hardware Analysis code
40 Reproducible scientific software pipelines Repository would contain: Data Dependencies No mention of OS or lower-level software Hyperparameters Scripts to run the jobs on similar hardware Analysis code
41 Docker for reproducible software source: Docker
42 Dockerfiles from GitHub Repos
43 Using repo2docker
44 repo2docker as reproducibility unit-test repo2docker looks for configuration files to determine how to build the docker image Typically describe dependencies and other instructions to create the environment configs in either root or folder called binder
45 Supported config files Dockerfile: full environment setup environment.yml: conda requirements.txt: pip REQUIRE: Julia apt.txt: Debian packages postbuild: custom install script runtime.txt: Python runtime
46 Example repo
47 Installing LaTeX
48 Installing LaTeX
49 Using binder folder and postbuild
50 Future: repo2docker with cloud services
51 repo2docker as reproducibility unit-test making an image from a repository requires: 1. version of the base docker image 2. version of repo2docker itself 3. versions of the libraries installed by the repository
52 repo2docker as reproducibility unit-test making an image from a repository requires: 1. version of the base docker image 2. version of repo2docker itself 3. versions of the libraries installed by the repository repo2docker deterministically controls 1 & 2 user controls 3
53 repo2docker as reproducibility unit-test Because repo2docker is deterministic, we can determine whether researchers have fully described the software environment used to load, analyze, and visualize their data Version numbers especially important If the configuration files don t create an environment that can run the code provided, the repository is not reproducible as currently configured
54 Reproducibility: Producing similar results with the same data
55 Author photo credit: xkcd
56 Author Other scientist photo credit: xkcd
57 Reproducibility: Producing similar results with the same data independently
58 repo2docker: Produces the same environment as the scientist
59 docker opens the doors to the laboratory itself
60 At a minimum, we should specify our environment
61 conda env export > environment.yml
62 pip freeze > requirements.txt
63 Docker for pods
64 JupyterHub, repo2docker as a service
65 Binder: Public repositories using JupyterHub and repo2docker
66
67
68
69 mybinder.org
70 mybinder.org
71 username/repo/branch
72 GitHub (GitLab and others also available) username/repo/branch
73 username/repo/branch? urlpath=lab
74
75
76 master?urlpath=tree/examples/notebooks/ pytorch_tests_onoff.ipynb
77 examples/notebooks/binderexample/statisticalanalysis.ipynb
78 JupyterHub
79 JupyterHub + repo2docker = binder photocredit: binder team
80
81 Create your own JupyterHub
82 Create your own BinderHub
83
84 The scope of the problem
85 The scope of the problem
86 We ed corresponding authors in our sample to request the data and code associated with their articles and attempted to replicate the findings from a randomly chosen subset of the articles for which we received artifacts. We estimate the artifact recovery rate to be 44% with a 95% bootstrap confidence interval of the proportion [0.36, 0.50], and we estimate the replication rate to be 26% with a 95% bootstrap confidence interval [0.20, 0.32]. - Stodden et al.
87 Moyna Baker, 2016 Nature (n=1,500)
88 Moyna Baker, 2016 Nature
89 GitHub repo s aren t enough
90 Report what you ve actually discovered, clearly enough that someone else can discover it for themselves. - James Somers
91 The maintainer s mind
92 The maintainer s mind
93 The scope of the problem
94 Scientific communication has become software engineering
95 Always code and comment in such a way that if someone a few notches junior picks up the code, they will take pleasure in reading and learning from it. - Code for the Maintainer
96 As scientists, we are now all becoming open source maintainers
97 As scientists, we are now all becoming open source maintainers Welcome to the club :D
98 Atlantic Monthly, April
99 Here s what s next
100
101 Create your own BinderHub
102
103 Show, don t tell
104
105
106
107 What if?
108
109 Contribute, get involved
110 Contribute, get involved GitHub: github.com/jupyterhub github.com/jzf2101 We read issues! We mark issues for new contributors as good first issue or help wanted github.com/jupyter/governance for code of conduct
111 Contribute, get involved Gitter gitter.im/juptyerhub/jupyterhub gitter.im/juptyerhub/binder gitter.im/juptyer/jupyter
112 Thanks to all the maintainers jupyter.org
113 And the contributors too! jupyter.org
114 Acknowledgements
Index. Bessel function, 51 Big data, 1. Cloud-based version-control system, 226 Containerization, 30 application, 32 virtualize processes, 30 31
Index A Amazon Web Services (AWS), 2 account creation, 2 EC2 instance creation, 9 Docker, 13 IP address, 12 key pair, 12 launch button, 11 security group, 11 stable Ubuntu server, 9 t2.micro type, 9 10
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