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+#+COLUMNS: %40ITEM %10BEAMER_env(Env) %9BEAMER_envargs(Env Args) %10BEAMER_act(Act) %4BEAMER_col(Col) %10BEAMER_extra(Extra) %8BEAMER_opt(Opt)
+#+TITLE: Software Heritage and Boa
+#+BEAMER_HEADER: \date[Boa workshop]{Envisioning Boa 2.0 workshop\\online conference}
+#+AUTHOR: Stefano Zacchiroli
+#+DATE: 14 January 2021
+#+EMAIL: zack@upsilon.cc
+
+#+INCLUDE: "../../common/modules/prelude.org" :minlevel 1
+#+INCLUDE: "../../common/modules/169.org"
+#+BEAMER_HEADER: \titlegraphic{}
+#+BEAMER_HEADER: \setbeamertemplate{background}{\pgfuseimage{bgd-world}}
+#+BEAMER_HEADER: \institute[UParis \& Inria]{Université de Paris \& Inria --- {\tt zack@upsilon.cc, @zacchiro}}
+#+BEAMER_HEADER: \author{Stefano Zacchiroli}
+#+BEAMER_HEADER: \title{Software Heritage and Boa}
+
+* Software Heritage
+** Software Heritage in a nutshell \hfill www.softwareheritage.org
+   #+INCLUDE: "../../common/modules/swh-goals-oneslide-vertical.org::#goals" :only-contents t :minlevel 3
+** An international, non profit initiative\hfill built for the long term
+  :PROPERTIES:
+  :CUSTOM_ID: support
+  :END:
+*** Sharing the vision                                              :B_block:
+  :PROPERTIES:
+  :CUSTOM_ID: endorsement
+  :BEAMER_COL: .5
+  :BEAMER_env: block
+  :END:
+   #+LATEX: \begin{center}{\includegraphics[width=\extblockscale{.4\linewidth}]{unesco_logo_en_285}}\end{center}
+   #+LATEX: \vspace{-0.8cm}
+   #+LATEX: \begin{center}\vskip 1em \includegraphics[width=\extblockscale{1.4\linewidth}]{support.pdf}\end{center}
+    #+latex: \small And many more ...\\
+    #+latex:\mbox{}~~~~~~~\tiny\url{www.softwareheritage.org/support/testimonials}
+# #+BEAMER: \pause
+*** Donors, members, sponsors                                       :B_block:
+    :PROPERTIES:
+    :CUSTOM_ID: sponsors
+    :BEAMER_COL: .5
+    :BEAMER_env: block
+    :END:
+   #+LATEX: \begin{center}\includegraphics[width=\extblockscale{.4\linewidth}]{inria-logo-new}\end{center}
+   #+LATEX: \begin{center}
+   # #+LATEX: \includegraphics[width=\extblockscale{.2\linewidth}]{sponsors-levels.pdf}
+   #+LATEX: \colorbox{white}{\includegraphics[width=\extblockscale{1.4\linewidth}]{sponsors.pdf}}
+   #+LATEX: \end{center}
+#   - sponsoring / partnership :: \hfill \url{sponsorship.softwareheritage.org}
+** Data model
+   #+BEAMER: \centering \includegraphics[width=\textwidth]{swh-data-model-h}
+*** 
+    A *global graph* linking together fully *deduplicated* source code artifact
+    (files, commits, directories, releases, etc.) to the places that distribute
+    them (e.g., Git repositories), providing a *unified view* on the entire
+    */Software Commons/*.
+** Automation, and storage
+   #+BEAMER: \begin{center}
+   #+BEAMER:   \mode<beamer>{\only<1>{\includegraphics[width=\extblockscale{1.1\textwidth}]{swh-dataflow-merkle-listers.pdf}}}
+   #+BEAMER:   \only<2-3>{\includegraphics[width=\extblockscale{1.1\textwidth}]{swh-dataflow-merkle.pdf}}
+   #+BEAMER: \end{center}
+   #+BEAMER: \pause
+   #+BEAMER: \pause
+   Full development history *permanently archived* in a *uniform data model*.
+** The largest free/open source software archive \hfill\small archive.softwareheritage.org
+   #+INCLUDE: "../../common/modules/status-extended.org::#archive" :only-contents t :minlevel 3
+** Selected research highlights
+  #+BEGIN_EXPORT latex
+  \begin{thebibliography}{Foo Bar, 1969}
+  \small
+
+  \bibitem{Abramatic2018} Jean-François Abramatic, Roberto Di Cosmo, Stefano Zacchiroli
+  \newblock Building the Universal Archive of Source Code
+  \newblock Communication of the ACM, October 2018
+
+  \bibitem{Pietri2019} Antoine Pietri, Diomidis Spinellis, Stefano Zacchiroli
+  \newblock The Software Heritage Graph Dataset: Public software development under one roof
+  \newblock MSR 2019: 16th Intl. Conf. on Mining Software Repositories. IEEE
+
+  \bibitem{Boldi2020} Paolo Boldi, Antoine Pietri, Sebastiano Vigna, Stefano Zacchiroli
+  \newblock Ultra-Large-Scale Repository Analysis via Graph Compression
+  \newblock SANER 2020, 27th Intl. Conf. on Software Analysis, Evolution and Reengineering. IEEE
+
+  \bibitem{Pietri2020a} Antoine Pietri, Guillaume Rousseau, Stefano Zacchiroli
+  \newblock Forking Without Clicking: on How to Identify Software Repository Forks
+  \newblock MSR 2020: 17th Intl. Conf. on Mining Software Repositories. IEEE
+
+  \bibitem{Rousseau2020} Roberto Di Cosmo, Guillaume Rousseau, Stefano Zacchiroli
+  \newblock Software Provenance Tracking at the Scale of Public Source Code
+  \newblock Empirical Software Engineering, 2020
+
+  \end{thebibliography}
+  #+END_EXPORT
+* Collaboration
+** Working together
+   Analyses of the Software Heritage archive are still performed in ad-hoc ways
+   that require quite some knowledge of the archive data model and caveats.
+*** A Boa-like runtime for Software Heritage
+    - a *filtering language* to determine which artifacts and parts of the
+      archive to analyze
+    - an *implementation language* to describe experiments on artifacts
+      (general purpose with a dedicated library, DSL, or otherwise)
+    - a *runtime* for executing experiments, exploiting DAG node sharing to
+      avoid redoing unneeded expensive computations
+    - *infrastructure connectors* that allow to run experiments
+      (locally/cluster/cloud)
+*** Sharing archive access
+    - we are archiving everything /anyway/, for digital preservation purposes
+    - an archive mirror could be leveraged by Boa as corpus for researchers
+* Conclusion
+** Wrapping up
+*** 
+    - *Software Heritage archives* source code artifacts for posterity and it
+      is the most comprehensive publicly accessible archive of its kind
+    - *Boa* harvests source code artifacts and provides an *environment* that
+      enables researchers to run experiments on them
+    - Software Heritage provides valuable research datasets, but its
+      researcher-facing part is not as developed as Boa's
+    - there is mutual benefit in *sharing access* to source code artifacts and
+      *porting Boa's runtime* to the Software Heritage archive and data model
+*** Learn more
+    #+BEAMER: \center \Large
+    [[https://www.softwareheritage.org][www.softwareheritage.org]]
+*** Contacts
+    [[https://upsilon.cc/~zack/][Stefano Zacchiroli]] \hfill/\hfill [[mailto:zack@upsilon.cc][zack@upsilon.cc]] \hfill/\hfill [[https://twitter.com/zacchiro][@zacchiro]]
+    \hfill/\hfill [[https://mastodon.xyz/@zacchiro][@zacchiro@mastodon.xyz]]
+* Appendix                                                       :B_appendix:
+  :PROPERTIES:
+  :BEAMER_env: appendix
+  :END:
diff --git a/talks-public/2021-01-14-boa/Makefile b/talks-public/2021-01-14-boa/Makefile
new file mode 100644
index 0000000..68fbee7
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+++ b/talks-public/2021-01-14-boa/Makefile
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+include ../Makefile.slides