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openrisk.eu
Open Risk
@openrisk.eu
530 followers 230 following 1.3K posts
Mostly about #OpenSource #SustainableFinance and #RiskManagement.

* Open Risk Manual: https://www.openriskmanual.org
* Open Risk Academy: https://www.openriskacademy.com
* Blog: https://www.openriskmanagement.com
* Code: https://github.com/open-risk
Posts Replies Media Videos
openrisk.eu
Graphs can be used to express traditional double-entry accounting in a natural way and can be extended also in the direction of consistent economic-network accounts (quadruple-entry). In a new piece I explore the why and how.

#sustainablefinance

www.openriskmanagement.com/graphs_for_d...
Visual representation of quadruple-entry accounting (accounting that reconciles balances between entities) using a mathematical graph framework. The accounts of entities are nodes, their exchanges are edges. Transactions happen internally within the perimeter of entities or externally. The nature of directed graphs means that the double-entry balance requirements of standard accounting are satisfied naturally.
November 12, 2025 at 3:11 PM
openrisk.eu
The Open Risk Academy course "21 Ways to Visualize a Timeseries" is a deep dive into the building blocks of 1D visualizations of timeseries data

#datascience
#visualization

Description: www.openriskmanagement.com/21_ways_to_v...

Course:https://www.openriskacademy.com/course/view.php?id=56
A collage of visualizations of the same timeseries data
November 3, 2025 at 5:30 PM
openrisk.eu
More than a decade ago I was speculating that social media will move past the stage of lurkers, likers and posters and into co-creation. Boy was I wrong 🤦

But the potential is still there.

#opensource
#activitypub
#atproto

www.openriskmanagement.com/the-four-sta...
A depiction of a conjectured evolution of social media from merely having an online page (CV) to "liking", to posting and eventually co-creating.
November 1, 2025 at 3:30 PM
openrisk.eu
The Open Risk Academy course "Introduction to GeoJSON" introduces this popular format for the encoding of geospatial information

#datascience
#geospatial

Description: www.openriskmanagement.com/academy-cour...

Course: www.openriskacademy.com/course/view....

Code: github.com/Open-Risk-Ac...
Visual representing GeoJSON objects from the Open Risk Acaademy course: An Introduction to GeoJSON. In four different panels the key elements of the format are illustrated. This course is a CrashProgram (short course) introducing the GeoJSON format for working with geographical data. The course is at an introductory technical level. It requires some familiarity with data specifications such as JSON and a very basic knowledge of Python. GeoJSON is widely adopted as format for representing geospatial features in web-based mapping applications. Many modern mapping geospatial visualization libraries, such as Leaflet and Mapbox, support GeoJSON natively. ## Course objectives * You will be able to confidently discuss the geojson standard * You will be able to dive into geojson related development projects with confidence The course is live at the [Open Risk Academy](https://www.openriskacademy.com/course/view.php?id=53). ## Brief Description * Step 1: In this first step of the course we start with a high level review of GeoJSON * Step 2: In this step we review the elements of the GeoJSON specification in some detail with examples * Step 3: In this step we will go over the _basics_ of using geojson in python * Step 4: In this final step we cover a number of special topics that are quite useful to be aware of #### Where To Get Help: If you get stuck on any issue with the course or the Academy: - If the issue is related to the course topics / material, check in the first instance the Course Forum (Chat) - Join the course discussion in the [Open Risk Commons](https://www.openriskcommons.org/t/intro-to-geojson/65) - If the issue is related the operation of the Open Risk Academy check first the Academy FAQ - If the issue persists contact us at info at openriskmanagement dot com
October 31, 2025 at 10:05 AM
openrisk.eu
The Open Risk Academy course "Exploratory Risk Data Analysis Using Pandas, Seaborn and Statsmodels" introduces EDA using credit data.

#datascience
#python

Description: www.openriskmanagement.com/academy-cour...

Course: www.openriskacademy.com/course/view....

Code: github.com/Open-Risk-Ac...
Snapshots of various visualizations using python matplotlib in the context of exploratory (risk) data analysis. Material for an Open Risk Academy course.
October 30, 2025 at 1:49 PM
openrisk.eu
How will the open web survive the onslaught of abuse by the AI bros?

Simple answer: It won't.

The first step was to lock down useful but compute intensive services like search, as the server was being hammered to death. 😧

The next step will be to put the entire Open Risk Manual behind a login. 😢
Screenshot of page at the Open Risk Manual, an open wiki for all things risk management and sustainable finance. The text reads: login required. Please log in to view other pages. Due to abusive behavior by bots and other actors we are forced to lock part of the functionality of the Open Risk Manual. If login access is essential to your use of the Open Risk Manual please contact us for a discussion.
October 17, 2025 at 11:37 AM
openrisk.eu
New piece of functionality added to the Equinox platform: parsing and loading Eurostat's physical energy flow accounts (PEFA) as reference data towards sustainable portfolio management / #sustainablefinance

github.com/open-risk/eq...
Snapshot of the web application Equinox, illustrating a database from physical energy flows (PEFA)
October 15, 2025 at 11:13 AM
openrisk.eu
A new white paper in the series on Sustainable Public Procurement: Making Use Of Environmentally Extended Input-Output Data

#sustainablefinance
#greenpublicprocurement

www.openriskmanagement.com/sustainable_...
Diagram expressing the life cycle of public procurement contracts
October 10, 2025 at 8:59 AM
openrisk.eu
I propose the term "green chameleons" for companies adopting and abandoning sustainability commitments depending on the hour of the day.
picture of a green chameleon
October 9, 2025 at 7:17 AM
openrisk.eu
A simple, generic and portable format for disseminating Input-Output data, inspired from the graph representation of Input-Output matrices, it allows for a flexible and unified description which can be serialized into csv or an sqlite database.

www.openriskmanagement.com/portable-sta...
A composite diagram illustrating a typical tabular representation of an economic input-output matrix, a graph representation of the same and finally a database table representation of the graph
October 8, 2025 at 1:34 PM
openrisk.eu
All the supporting code for the Academy courses is available in the Open Risk Academy organization at GitHub. These projects can be used as standalone learning resources, though the documentation might be somewhat cryptic.

github.com/Open-Risk-Ac...
Snapshot of the Open Risk Academy projects at GitHub
October 2, 2025 at 2:56 PM
openrisk.eu
The online training material at the Open Risk Academy spans a range of topics from #datascience, #riskmanagement and #sustainablefinance, always with a focus on #opensource tools and #opendata 🐧

Access is free, a request by a human is required to combat spammers and bots 🤦

www.openriskacademy.com
The list of current (2025) course categories at the Open Risk Academy: General Courses Data Science Data Engineering Financial Literacy Risk Management Sustainable Finance Green Public Procurement Risk Modeling using Python Credit Portfolio Management Credit Concentration Courses Mortgage Modeling Banking Regulation
October 2, 2025 at 2:17 PM
openrisk.eu
What can Inka Quipus teach us about data management

A blog post about the ingenious methods used by the ancient Inca culture to encode information and what insights we might draw from them today for #datascience

www.openriskmanagement.com/what-inka-qu...
Photo of a typical Inca Quipu, an ingenious device or ledger for storing information. It consists of a large number of strings all attached to a central string. Knots and other features (color, length) encode information.
September 16, 2025 at 11:19 AM
openrisk.eu
We didn't know that the Earth's ozone layer was a planetary boundary until chlorofluorocarbon chemistry deployed at scale made it so.

This pattern repeats again and again as both technology and our footprint increases.

Beyond piecemeal #sustainability solutions it calls for learning metapatterns.
A classic quote ("give a man a fish, feed him for a day, teach a man to fish, feed him for a lifetime") overlaid as text on a watery landscape during dusk, with a man fishing.
September 13, 2025 at 10:50 AM
openrisk.eu
The "timeline" interface on #bluesky and/or #mastodon is not particularly useful if you follow many infrequently posting accounts.

A simple way to (partially) solve this is to convert your follow lists into #opml and then import into your favorite #rss reader.

github.com/open-risk/at...
Screenshot of the Akregator RSS reader (Linux desktop) illustrating a number of Mastodon and Bluesky account feeds. A collection of Python scripts (atp2rss) helps create the opml feed lists from exported files.
September 12, 2025 at 7:54 AM
openrisk.eu
If you are developing or using #opensource tools supporting #sustainablefinance please contribute to the list (on GitHub) or simply mention it here! 💚

#econsky
#climatefinance

github.com/open-risk/aw...
A flag the aims to symbolize environmental sustainability. The colors users are green and yellow. The upper part is a yellow sun on green background. In the lower part the sun is mirrored as a yellow wheel (symbolizing human industry / economy that is powered by renewable /sustainable energy).
September 8, 2025 at 10:28 AM
openrisk.eu
First alpha release of the Leontief library is out. Aims to fill a gap in the toolkit of working with Environmentally Extended Input-Output models 💚.

Interested? Get involved and help shape the initiative! 🚀

#sustainablefinance
#econsky

github.com/open-risk/le...
www.openriskcommons.org
A visual depiction of economic input-output tables using pictograms. A number of economic sectors are shown as labels in a table. Circles of different sizes and colors are filling the grid formed by the sectors. This represents the volume and environmental impact of exchanges between sectors.
September 3, 2025 at 12:54 PM
openrisk.eu
Backround reading in this blog post

www.openriskmanagement.com/green-public...

An Open Risk Academy course goes deeper into concepts and terminology.

www.openriskacademy.com/course/view....
overview of the course "procurement decarbonisation challenge"
August 29, 2025 at 12:50 PM
openrisk.eu
The Green Public Procurement Challenge is an online game where you can try your hand at greening your city. Can you do the right purchases even while fulfilling the citizen's needs and remaining within budget?

www.sustainability.town/games/green_...

#sustainablefinance
#puplicprocurement
snapshot of a game scene from the green public procurement. Shows a number of indicators, such as remaining budget, time and current environmental impact, along with the remaining procurement needs and tender outcomes.
August 29, 2025 at 12:48 PM
openrisk.eu
In this post we discuss at the applicability of Kraljic Matrix type methodologies in the context of Green Public Procurement, the essence being looking at the uncertainty of positive impact alongside any expectations.

#gpp
#publicprocurement

www.openriskmanagement.com/kraljic-matr...
The diagram illustrates a hypothetical analysis where certain procurement activities are grouped by sector (construction, manufacturing, energy, transport etc. as indicated by NACE pictograms) are placed on a matrix of expected GHG reductions versus uncertainty of that reduction.
August 8, 2025 at 3:26 PM
openrisk.eu
#bigtech are the new "masters of the universe" with resources that vastly exceed those of the former masters: the big banks.

What new risks does BigTech in finance pose to users and global stability? Interesting blog post from Banco de Espana

#econsky
#riskmanagement

www.bde.es/wbe/en/notic...
A comparison of market capitalization between big tech and big banks. The highest valued bigtech entity is worth as much as the top ten big banks together!
June 17, 2025 at 1:31 PM
openrisk.eu
Open Risk means: freely accessible courses at the Open Risk Academy, the Open Risk Manual and dozens of #opensource projects focusing on diverse #riskmanagement and #sustainablefinance challenges.

Supporting our work means that we can continue:

buy.stripe.com/fZe01M5QK2aY...
A composite pictogram depicting a number of different Open Risk projects: the Academy, the Manual, open source tools etc.
June 16, 2025 at 1:30 PM
openrisk.eu
Even within the conventions and blind spots of "GDP accounting", the #oecd argues that "Accelerated climate action can be a driver of growth and development".

New report: www.oecd.org/en/publicati...

#sustainablefinance
#econsky
"waterfall" type diagram illustrating the impact on GDP of enhanced Nationally Defined Contributions (of GHG emissions)
June 11, 2025 at 2:34 PM
openrisk.eu
The Open Risk Commons is a welcoming space to discuss #opensource #riskmanagement and #sustainablefinance topics. Based on the wonderful #discourse platform. If you work on tools, methodologies or #opendata in these or related domains, come and join the discussion.

www.openriskcommons.org
Snapshot of the Open Risk Commons About page with the tagline: A place to discuss the open future of risk management
June 11, 2025 at 8:05 AM
openrisk.eu
While #opensource is "eating the world", the vast financial services sector never got the message.

Yet there are pioneering initiatives worth mentioning.

A category page @ Open Risk Manual aims to catalog what's available.

Contributions welcome

www.openriskmanual.org/wiki/Categor...

#econsky
Snapshot of an Open Risk Manual category page listing a number of different catalogs of open source software that is more or less directly relevant for financial services activity. * Open Banking * Open Source Agent-based Models * Open Source Blockchain Platforms * Open Source Core Banking * Open Source Data Quality Software * Open Source Economic Models * Open Source Federation Platforms * Open Source Finance * Open Source Finance Software Stack * Open Source Financial Software * Open Source Mobile Finance Apps * Open Source Risk Management Software * Open Source Visualization Software * Overview of the Julia-Python-R Universe
May 31, 2025 at 7:47 AM