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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
+#+SUBTITLE: A research platform for large-scale source code archival
+#+BEAMER_HEADER: \date[2021-10-19, IDIA]{19 Oct 2021\\IDIA Prototype/Software/Platform Day\\Télécom Paris}
+#+AUTHOR: Stefano Zacchiroli
+#+DATE: 19 Oct 2021
+#+EMAIL: zack@upsilon.cc
+
+#+INCLUDE: "../../common/modules/prelude-toc.org" :minlevel 1
+#+INCLUDE: "../../common/modules/169.org"
+#+BEAMER_HEADER: \institute[Télécom Paris]{Télécom Paris --- {\tt zack@upsilon.cc, @zacchiro}}
+#+BEAMER_HEADER: \author{Stefano Zacchiroli}
+
+* About me                                                  :B_ignoreheading:
+  :PROPERTIES:
+  :BEAMER_env: ignoreheading
+  :END:
+  #+INCLUDE: "this/zack.org" :minlevel 2
+* Why we must preserve the history of software source code
+** Software /source code/ is precious knowledge
+   #+INCLUDE: "../../common/modules/source-code-different-short.org::#softwareisdifferent" :only-contents t :minlevel 3
+** Calling for source code preservation: UNESCO
+*** :B_column:BMCOL:
+    :PROPERTIES:
+    :BEAMER_col: .53
+    :BEAMER_env: column
+    :END:
+    #+ATTR_LATEX: :width .7\linewidth
+    file:UNESCOParisCallMeeting.png
+    UNESCO, Inria, Software Heritage invite\\
+    [[https://en.unesco.org/news/experts-call-greater-recognition-software-source-code-heritage-sustainable-development][40 international experts meet in Paris]] ...
+    #+BEAMER: \pause
+*** :B_column:BMCOL:
+    :PROPERTIES:
+    :BEAMER_col: .5
+    :BEAMER_env: column
+    :END:
+    #+ATTR_LATEX: :width .65\linewidth
+    file:paris_call_ssc_cover.jpg
+    [[https://en.unesco.org/foss/paris-call-software-source-code][The call is published on Feb 2019]]\pause
+*** :B_ignoreheading:
+    :PROPERTIES:
+    :BEAMER_env: ignoreheading
+    :END:
+*** 
+    :PROPERTIES:
+    :BEAMER_COL: 1.06
+    :BEAMER_env: block
+    :END:
+    “[We call to] support efforts to gather and preserve the artifacts and
+    narratives of the history of computing, while the earlier creators are still
+    alive”
+
+    https://en.unesco.org/foss/paris-call-software-source-code
+  
+** Source code history --- for open science
+   #+INCLUDE: "../../common/modules/swh-ardc.org::#pillaropenscience" :only-contents t :minlevel 3
+*** 
+    \hfill Preserving the history of source code is important for /reproducibility/
+** Source code history --- for security and transparency
+#+LATEX: \vspace{-.5em}
+*** Where does reused software come from?                           :B_block:
+    :PROPERTIES:
+    :BEAMER_env: block
+    :BEAMER_COL: .5
+    :END:
+#+BEGIN_EXPORT latex
+\begin{center}
+\includegraphics[width=.7\linewidth]{myriadsources}
+\end{center}
+#+END_EXPORT
+#+BEAMER: \pause
+*** Do /you/ know where it comes from?                              :B_block:
+    :PROPERTIES:
+    :BEAMER_env: block
+    :BEAMER_COL: .4
+    :END:
+    - the software you ship
+    - the software you use
+    - the software you acquire
+    - the software that 
+      + has that bug
+      + has that vulnerability
+***                                                         :B_ignoreheading:
+    :PROPERTIES:
+    :BEAMER_env: ignoreheading
+    :END:
+#+BEAMER: \pause
+*** KYSW: Know Your SoftWare                                     :B_picblock:
+    :PROPERTIES:
+    :BEAMER_env: picblock
+    :BEAMER_OPT: pic=executiveorder.jpg,width=.4\linewidth,leftpic=true
+    :END:
+    Like KYC in banking, KYSW is now essential all over IT...\\
+    \mbox{}\\
+    *Sec. 4. Enhancing Software Supply Chain Security* \\
+    \hfill /ensuring and attesting, to the extent practicable, to the integrity and provenance of open source software/\\
+    \mbox{}\hfill [[https://www.whitehouse.gov/briefing-room/presidential-actions/2021/05/12/executive-order-on-improving-the-nations-cybersecurity/][May 2021 POTUS Executive Order]]
+   
+** Fragile
+   #+INCLUDE: "../../common/modules/swh-motivations.org::#fragile" :only-contents t :minlevel 3
+* How we can preserve our software heritage
+** Software Heritage in a nutshell \hfill www.softwareheritage.org
+   #+BEAMER: \transdissolve
+   #+INCLUDE: "../../common/modules/swh-goals-oneslide-vertical.org::#goals" :only-contents t :minlevel 3
+** The largest public source code archive, principled \hfill \small \url{bit.ly/swhpaper}
+*** 
+    :PROPERTIES:
+    :BEAMER_env: block
+    :BEAMER_col: 0.5
+    :END:
+    #+latex: \centering
+    #+ATTR_LATEX: :width \linewidth
+    file:SWH-as-foundation-slim.png
+*** 
+    :PROPERTIES:
+    :BEAMER_env: block
+    :BEAMER_col: 0.5
+    :END:
+    #+latex: \centering
+    #+ATTR_LATEX: :width \linewidth
+    file:2021-09-archive-growth.png\\
+    [[https://archive.softwareheritage.org][archive.softwareheritage.org]]
+*** linebreak :B_ignoreheading:
+    :PROPERTIES:
+    :BEAMER_env: ignoreheading
+    :END:
+#+BEAMER: \pause
+*** Technology
+    :PROPERTIES:
+    :BEAMER_env: block
+    :BEAMER_col: 0.34
+    :END:
+    - transparency and FOSS
+    - replicas all the way down
+*** Content (billions!)
+    :PROPERTIES:
+    :BEAMER_env: block
+    :BEAMER_col: 0.32
+    :END:
+    - intrinsic identifiers
+    - facts and provenance
+*** Organization
+    :PROPERTIES:
+    :BEAMER_env: block
+    :BEAMER_col: 0.33
+    :END:
+    - non-profit
+    - multi-stakeholder
+** A peek under the hood: a global view on the software commons
+    #+BEAMER: \begin{center}
+    #+BEAMER:   \mode<beamer>{\only<1>{\includegraphics[width=\extblockscale{.9\textwidth}]{swh-dataflow-merkle-listers.pdf}}}
+    #+BEAMER:   \only<2>{\includegraphics[width=\extblockscale{.9\textwidth}]{swh-dataflow-merkle.pdf}}
+    #+BEAMER: \end{center}
+    #+BEAMER: \pause
+*** 
+    A *global graph* linking together fully *deduplicated* source code artifact
+    (files, commits, directories, releases, etc.) to the places3that distribute
+    them (e.g., Git repositories), providing a *unified view* on the entire
+    */Software Commons/*.
+
+    Size: *~20 B* nodes, *~200 B* edges, *~600 TB* (uncompressed) blobs
+    #   - *GitHub*, Gitlab.com, Bitbucket, /Gitorious/, /GoogleCode/, GNU, PyPi, Debian, NPM...
+** Software Heritage /intrinsic/ Identifiers (SWHID) \hfill [[https://docs.softwareheritage.org/devel/swh-model/persistent-identifiers.html][(full spec)]]
+  #+LATEX: \centering%\forcebeamerstart
+  #+LATEX: \mode<beamer>{\only<1>{\includegraphics[width=\linewidth]{SWHID-v1.4_1.png}}}
+  #+LATEX: \mode<beamer>{\only<2>{\includegraphics[width=\linewidth]{SWHID-v1.4_2.png}}}
+  #+LATEX: \only<3->{\includegraphics[width=\linewidth]{SWHID-v1.4_3.png}}
+  #+LATEX: %\forcebeamerend
+*** An emerging standard :B_block:
+    :PROPERTIES:
+    :BEAMER_act: <4->
+    :BEAMER_COL: .6
+    :BEAMER_env: block
+    :END:
+    - in Linux Foundation's [[https://spdx.github.io/spdx-spec/appendix-VI-external-repository-identifiers/#persistent-id][SPDX 2.2]]
+    - IANA registered, WikiData property [[https://www.wikidata.org/wiki/Property:P6138][P6138]]
+*** Examples: :B_block:
+    :PROPERTIES:
+    :BEAMER_act: <5->
+    :BEAMER_COL: .4
+    :BEAMER_env: block
+    :END:
+    - [[https://archive.softwareheritage.org/swh:1:cnt:64582b78792cd6c2d67d35da5a11bb80886a6409;origin=https://github.com/virtualagc/virtualagc;lines=245-261/][Apollo 11 AGC excerpt]]
+    - [[https://archive.softwareheritage.org/swh:1:cnt:bb0faf6919fc60636b2696f32ec9b3c2adb247fe;origin=https://github.com/id-Software/Quake-III-Arena;lines=549-572/][Quake III rsqrt]]
+* Demo time!
+** A walkthrough
+   - Browse [[https://archive.softwareheritage.org][the archive]]
+   - [[https://save.softwareheritage.org][Trigger archival]] of your preferred software in a breeze
+   - Get and use SWHIDs ([[https://docs.softwareheritage.org/devel/swh-model/persistent-identifiers.html][full spec available online]])
+   - The [[https://www.softwareheritage.org/2019/07/20/archiving-and-referencing-the-apollo-source-code/][Apollo 11 AGC source code example]]
+   - Cite software [[https://www.softwareheritage.org/2020/05/26/citing-software-with-style/][with the biblatex-software style]] from CTAN
+   - Example use in a research article: compare Fig. 1 and conclusions 
+      - in [[http://www.dicosmo.org/Articles/2012-DaneluttoDiCosmo-Pcs.pdf][the 2012 version]]
+      - in [[https://www.dicosmo.org/share/parmap_swh.pdf][the updated version]] using SWHIDs and Software Heritage
+#   - Example use in a research article: extensive use of SWHIDs in [[https://www.dicosmo.org/Articles/2020-ReScienceC.pdf][a replication experiment]]
+   - Example in a journal: [[http://www.ipol.im/pub/art/2020/300/][an article from IPOL]]
+   - [[https://doc.archives-ouvertes.fr/en/deposit/deposit-software-source-code/][Curated deposit in SWH via HAL]], see for example: 
+      [[https://hal.archives-ouvertes.fr/hal-02130801][LinBox]], [[https://hal.archives-ouvertes.fr/hal-01897934][SLALOM]], [[https://hal.archives-ouvertes.fr/hal-02130729][Givaro]], [[https://hal.archives-ouvertes.fr/hal-02137040][NS2DDV]], [[https://hal.archives-ouvertes.fr/lirmm-02136558][SumGra]], [[https://hal.archives-ouvertes.fr/hal-02155786][Coq proof]], ...
+   - Rescue landmark legacy software, see the [[https://www.softwareheritage.org/swhap/][SWHAP process with UNESCO]]
+* Scientific challenges
+** A revolutionary research infrastructure designed for source code
+   #+INCLUDE: "../../common/modules/swh-as-infrastructure.org::#oneslide" :only-contents t :minlevel 3
+** A challenging scientific and technical undertaking
+*** A novel, large infrastructure
+    - gigantic Merkle graph
+    - object storage [[https://www.softwareheritage.org/2021/03/11/towards-a-next-generation-object-storage-for-software-heritage/][with peculiar workload]]
+    - simple problems become hard, e.g., counting tens of billions of objects,
+      or sorting all possible origins of a node
+    # - and much more: see [[https://www.softwareheritage.org/2021/04/08/swh-2021-technical-roadmap/][the 2021 technical roadmap]]
+    #+BEAMER: \pause \vspace{-1mm}
+*** First dataset available as open data
+    #+BEGIN_EXPORT latex
+    \begin{thebibliography}{Foo Bar, 1969}
+    \footnotesize
+    \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\newblock
+    preprint: \url{http://deb.li/swhmsr19}
+    \end{thebibliography}
+    \vspace{-1mm}
+    #+END_EXPORT
+   - used as topic for the MSR 2020 mining competition
+   #+BEAMER: \pause \vspace{-1mm}
+***  
+    → for more, see last week's talk with the DIG team: *Analyzing the Global
+    Graph of Public Software Development*
+    [[https://upsilon.cc/~zack/talks/2021/2021-10-14-telecom-dig.pdf][upsilon.cc/~zack/talks/2021/2021-10-14-telecom-dig.pdf]]
+    
+* Preserving our software commons: the present and the future
+** Focus on Academia: growing adoption (selection)
+   #+INCLUDE: "../../common/modules/swh-adoption-academic.org::#adoption" :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}
+*** :B_ignoreheading:
+    :PROPERTIES:
+    :BEAMER_env: ignoreheading
+    :END:
+*** Research collaboration                              :B_picblock:noexport:
+  :PROPERTIES:
+  :BEAMER_COL: .5
+  :BEAMER_env: picblock
+  :BEAMER_OPT: pic=Qwant_Logo, leftpic=true
+  :END:
+    source code search engine
+*** See more                                                       :noexport:
+    \hfill\tiny\url{http:://www.softwareheritage.org/support/testimonials}
+*** Global network                                      :B_picblock:noexport:
+    :PROPERTIES:
+    :BEAMER_COL: .5
+    :BEAMER_env: picblock
+    :BEAMER_OPT: pic=fossid, leftpic=true, width=.3\linewidth
+    :END:
+     - first *independent mirror*
+     - increased reliability
+** You may help!
+*** Foster the adoption of research best practices
+    - [[https://www.softwareheritage.org/save-and-reference-research-software/][archive and reference relevant source code]] (save code now, and [[https://hal.inria.fr/hal-01872189][deposit]])
+    - use Software Heritage and [[https://www.softwareheritage.org/2020/05/26/citing-software-with-style/][biblatex-software]] in articles, journals, and books
+    - [[https://www.softwareheritage.org/swhap/][rescue and preserve landmark legacy source code]] with SWHAP
+#+BEAMER: \pause
+*** Engage with Software Heritage as a researcher
+    - use the archive for your own software-related experiments
+    - work with us to tackle open technical and research problems
+  #+BEAMER: \pause
+*** Engage with Software Heritage as an organization
+    - become [[https://www.softwareheritage.org/support/sponsors/][a member/sponsor]]
+    - build a Software Heritage mirror
+    - contribute to the preservation mission
+** Thank you!
+  #+BEAMER: \vspace{-1mm}
+*** Resources
+  - archive :: [[https://archive.softwareheritage.org/][archive.softwareheritage.org]]
+  - stay posted :: [[https://www.softwareheritage.org/newsletter/][softwareheritage.org/newsletter]]
+  - blog :: [[https://www.softwareheritage.org/blog/][softwareheritage.org/blog]]
+  #+BEAMER: \vspace{-2mm}
+*** References (selected; full list at [[https://www.softwareheritage.org/publications][softwareheritage.org/publications]])
+  #+BEGIN_EXPORT latex
+  \begin{thebibliography}{Foo Bar, 1969}
+  \scriptsize \vspace{-2mm}
+  % \bibitem{DiCosmo2017} Roberto Di Cosmo, Stefano Zacchiroli
+  % \newblock Software Heritage: Why and How to Preserve Software Source Code
+  % \newblock iPRES 2017: Intl. Conf. on Digital Preservation
+  \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{Pietri2020c} Antoine Pietri, Diomidis Spinellis, Stefano Zacchiroli
+  \newblock The Software Heritage Graph Dataset: Large-scale Analysis of Public Software Development History
+  \newblock MSR 2020: 17th Intl. Conf. on Mining Software Repositories. IEEE
+  \bibitem{DiCosmo2020d} Roberto Di Cosmo
+  \newblock Archiving and Referencing Source Code with Software Heritage
+  \newblock International Congress on Mathematical Software (ICMS), 2020
+  \bibitem{PNSO2} MESRI
+  \newblock Second French Plan for Open Science
+  \newblock \href{https://www.ouvrirlascience.fr/second-national-plan-for-open-science}{www.ouvrirlascience.fr/second-national-plan-for-open-science}, 2001
+  \end{thebibliography}
+  #+END_EXPORT
+* Appendix                                              :B_appendix:noexport:
+  :PROPERTIES:
+  :BEAMER_env: appendix
+  :END:
+** 
+   \vfill
+   \centerline{\Huge Appendix}
+   \vfill
diff --git a/talks-public/2021-10-19-telecom-idia/Makefile b/talks-public/2021-10-19-telecom-idia/Makefile
new file mode 100644
index 0000000..68fbee7
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+++ b/talks-public/2021-10-19-telecom-idia/Makefile
@@ -0,0 +1 @@
+include ../Makefile.slides
diff --git a/talks-public/2021-10-19-telecom-idia/this/zack.org b/talks-public/2021-10-19-telecom-idia/this/zack.org
new file mode 100644
index 0000000..2a01ae4
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+++ b/talks-public/2021-10-19-telecom-idia/this/zack.org
@@ -0,0 +1,13 @@
+
+** About me
+   - Professor, Télécom Paris, ACES team (newbie!)
+   - Free/Open Source Software activist (20+ years)
+   - Debian Developer & Former 3x Debian Project Leader
+   - Former Open Source Initiative (OSI) director
+   - Software Heritage co-founder & CTO
+
+*** Research interests
+    - Software engineering, Free/Open Source Software (FOSS)
+    - Digital commons
+    - Computer security
+    - Software supply chain