User:7804j

I am the main founder and president of the Open Knowledge Association (OKA), a non-profit granting stipends to full-time Wikipedia translators. The articles we created are listed here. The work I do on Wikipedia and for OKA is during my free-time only, without any link to my full-time activity or to my employer.

My philosophy for life is Effective altruism. I fix what I find when browsing Wikipedia and try to contribute on pages where I feel that it would maximize my Social return on investment. In particular, I tend to focus on the fields of statistics, game theory, computer science and economics. I spend most of my time on the lead section of articles, on simplifying definitions and clarifying the differences between similar terms and topics.

Personal contributions

I keep here a list of my main Wikipedia contributions (outside of the work on OKA), mostly to keep a personal history but also for transparency. Note that I am not an expert on any of those topics, but that I only make changes when I have reached a high level of confidence in the accuracy of what I wrote.

Law

Created:

• List of Swiss Federal Acts
• Category:Swiss Federal Acts
• CO2 Act (Switzerland)
• Intelligence Service Act (Switzerland)
• Disability Discrimination Act (Switzerland),
• Archiving Act (Switzerland)
• Gender Equality Act (Switzerland)
• Administrative Procedure Act (Switzerland)
• Foreign Nationals and Integration Act
• Asylum Act (Switzerland)
• Lex Koller
• Freedom of Information Act (Switzerland)
• Political rights act (Switzerland)
• Publications Act (Switzerland)
• Parliament Act (Switzerland)
• Public Procurement Act (Switzerland)
• Government and Administration Organisation Act (Switzerland)
• Foreign Illicit Assets Act
• Host State Act (Switzerland)
• Swiss Abroad Act (Switzerland)
• Road Traffic Act (Switzerland)
• Federal Consumer Credit Act (Switzerland)
• Official Compilation of Federal Legislation (significantly expanded)
• Alcohol Act (Switzerland)

Added infobox, standardized format and clarified names: Swiss nationality law, Federal Act on Banks and Savings Banks

Public policy

Created:

• Equalization Payments in Switzerland
• Federal Direct Tax

Government institutions

Created:

• State Secretariat for Migration (Switzerland)
• Competition Commission of Switzerland
• Federal Office for Gender Equality (Switzerland)
• Swiss Federal Pension Fund
• Federal Office of Justice
• Federal Social Insurance Office
• Federal Office for Food Safety and Veterinary Affairs
• Federal Office for Civil Protection
• Federal Finance Administration
• Central Compensation Office
• Federal Office for Buildings and Logistics
• Federal Office of Information Technology, Systems and Telecommunication
• Federal Office of Personnel
• Federal Tax Administration
• Swiss Federal Audit Office
• Federal Office for Agriculture
• Federal Office for National Economic Supply
• Federal Office for Housing
• Federal Office for Spatial Development
• Federal Office of Communications
• Federal Office of Energy
• Federal Roads Office

Added infobox, standardized format and clarified names:Swiss Federal Institute of Intellectual Property, Federal Patent Court (Switzerland)

Updated organigrams: Federal administration of Switzerland, Federal Department of Justice and Police, Federal Department of Home Affairs, Federal Department of Defence, Civil Protection and Sport, Federal Department of Finance

Statistics and Mathematics

• Markov chain, Markov process, Memorylessness, Examples of Markov Chains: clarified the definitions and relationships between the terms; rewrote most of the lead section, merged Markov Chain and Markov Process, restructured the whole article of Markov chain.
• Cohort study, longitudinal study, panel study, cohort (statistics), panel data, longitudinal data: clarified the definitions and relationship between the terms (incl. page redirections and significant changes on the lead section).
• Centrality, Closeness centrality, Eigenvector centrality, Katz centrality, Closeness centrality, Random walk closeness centrality: clarified the definitions and relationship between the terms (incl. page redirections, creation of new articles and significant changes on the lead section).
• Unit root, Trend stationary, KPSS test: entirely rewrote or made significant changes to the lead section.
• Autocorrelation and Serial dependence: merged the two pages.
• Stationary process, Unit root test, Moving-average model, Autoregressive model, Dickey–Fuller test, Correlation and dependence, Association (statistics), Rank correlation, Ordinal association, Augmented Dickey–Fuller test, Breusch–Godfrey test, Autoregressive integrated moving average, Exponential smoothing, Ljung–Box test, Durbin–Watson statistic : less important changes to lead sections to help distinguish between the terms and clarify definitions
• Kendall rank correlation coefficient and Spearman's rank correlation coefficient: large change to the lead to help understand and distinguish between the two coefficients.
• Simple matching coefficient and Jaccard index: wrote the section distinguishing between the two measures.
• Silhouette (clustering): large addition in lead section to include interpretation of the measure
• Roulette (curve): Added trochoids to the list, and created the page category: Roulettes.

Computer science

• CAP theorem, PACELC theorem: entirely rewrote the articles, in particular the lead section.
• Online analytical processing and Online transaction processing: clarified the difference between the two terms in the lead.
• Cloudera Impala, Interpolation search, Imperative programming, Kruskal's algorithm, Minimum spanning tree, Turing machine, Data mart, Structure mining, Cloud computing, Association rule learning, Column-Oriented DBMS: changes to lead or clarifications of some aspects.
• Edit distance and Damerau–Levenshtein distance: clarified the differences between the various types of edit distance, standardized and simplified the leads
• Elbow method (clustering): created the page
• NoSQL: restructured the section on "Types and examples" of databases
• Polkadot: rewrote/restructured most of the page

Game Theory

• Cooperative game theory, Non-cooperative game theory (and the relevant section of Game theory): entirely redefined the terms and rewrote the lead section.
• Bayesian game, Complete information, Perfect information, Strategyproofness, Incentive compatibility, Revelation principle, Prospect Theory: important changes or complete rewrite of the lead section. Wrote the "examples section" of Bayesian game.
• Vickrey–Clarke–Groves auction: wrote the "intuitive description" section and clarified the lead section.
• Superrationality, Homo economicus, Homo reciprocans: important changes to the lead section or to the definition of the terms.

Economics

• Double marginalization: created the page
• Risk parity: clarification of definition in lead section.
• Zero lower bound: Added root cause and solution paragraphs in lead section
• Harmonic mean: Clarified and rewrote application in finance; restructured examples section.
• Auction ‎and Auction theory: diverse changes to improve consistency.
• English auction: added the "Japanese auction" section.
• No-reserve auction: created the page.
• The Market for Lemons
• List of Nobel Memorial Prize laureates in Economics: addition of the "Key contributions" column

Finance

• Rachev ratio, Wrong Way Risk: created and wrote the page
• Exposure at default, Credit risk, Credit Exposure, Probability of default, Potential future exposure, Loss given default: clarified definitions and relationship between terms (incl. page redirections, creation of new articles and significant changes on the lead section).
• Tracking error and Active risk: merged the two articles.
• Omega ratio, Alpha (finance): clarifications and small changes for consistency between the different ratios.
• Information ratio, Sharpe ratio: Rewrote lead and clarified structure of pages
• Cross-listing: rewrote lead (and adapted depositary receipt accordingly)

Accounting

• Net Income and Net Profit, Gross Income, Gross profit and Gross margin: merged and restructured the pages
• Quick ratio, Return on Capital: restructured lead and clarified definition
• Net Operating Assets: merged invested capital into the page, and rewrote the page
• Non-financial asset: created stub

Operations

• Overall equipment effectiveness: rewrote the lead section and restructured the page
• Vendor-managed inventory, Silver–Meal heuristic: minor changes to lead or clarifications of some aspects.
• Kraljic matrix: created and wrote the page and graph.
• Hayes-Wheelwright matrix: rewrote lead and added graph

Psychology

• Explicit memory, Declarative memory, Implicit memory, Procedural memory, Autobiographical memory: clarified the definitions and relationship between the terms, incl. the merger of declarative memory into explicit memory.
• Miller's law, Peak–end rule, Duration neglect, Base rate fallacy: minor changes to lead, clarification of relationship between the terms.
• Halo effect: rewrote the lead section.
• Proportionality Bias: created stub
• List of cognitive biases: added the column "Type" and categorized the biases accordingly

Medicine

• Charlson Comorbidity Index (CCI), Comorbidity–polypharmacy score, Elixhauser Comorbidity Index: created the pages
• Drug tolerance, Tolerability, Reverse tolerance, Desensitization (medicine) and Tachyphylaxis: re-wrote large sections of the lead and clarified relationship between terms

Other

Created:

• Yang Zhifa (FR and EN)
• Solange Ghernaouti (FR and EN)
• Pierre Zimmermann (bridge)
• Zimmermann Immobilier

Created stubs from French

• Budapest Tram Line 1
• Scuderia Lancia
• 603 BC
• Regalia of the Pharaoh
• Basilica Saint-Sauveur (Rennes)
• Cormery Abbey
• Laval Castle
• Théâtre de la Reine
• Mount Nyohō
• High-voltage switchgear
• Gilchrist-Thomas process
• Valais Monster
• Foreign White

Other: Mausoleum of the First Qin Emperor (created the "discovery" section, translated from French); Sutor, ne ultra crepidam (added references to Ultracrepidarianism); Restructuring of pages, including Notarial act

As well as minor changes to a variety of other articles.