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: Added infobox, standardized format and clarified names: Swiss nationality law, Federal Act on Banks and Savings Banks
 * 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)
 * Deputyship (Switzerland)

Public policy
Created:


 * Equalization Payments in Switzerland
 * Federal Direct Tax

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

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.