Where did that paragraph go? This software change helps volunteers hold up Wikipedia’s high quality

Affiliates Technology

One key to Wikipedia’s high quality is a system of mutual checks, based on the fact that every version of every page is stored and accessible. Thousands of community members review the latest edits of others in order to find errors or inconsistencies, comparing each new version of a page to older page versions and….

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EventStreams updates: You can now find new events, composite streams, and historical timestamp subscription

Technology

Last year, we released the EventStreams service. This service allows anyone to subscribe to recent changes to Wikimedia data. At the time, we only had one stream of data available: RecentChanges. RecentChanges is a stream of Wikimedia change events (e.g. recent edits to pages in Japanese Wikipedia). External developers can consume this stream to create tools or….

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The anatomy of search: A token of my affection

Technology The anatomy of search

A galloping overview To start, let’s get a bird’s-eye view of the parts of the search process: text comes in and gets processed and stored in a database (called an index); a user submits a query; documents that match the query are retrieved from the index, ranked based on how well they match the query,….

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Evolving the MediaWiki platform: Why we replaced Tidy with a HTML5 parser

Foundation From the archives MediaWiki Technology

Three years ago, the Wikimedia Foundation's Parsing Team decided to replace Tidy, a tool to fix HTML errors, with a HTML5-based tool. Here's what we did in that time period, and what kind of complexities we faced in changing pieces of the technical infrastructure powering Wikimedia wikis.

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Interactive maps, now in your language

Foundation From the archives Technology

Newly available on all Wikimedia wikis: embeddable maps that make the world a little easier to understand.

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You asked, so we built it: Synced reading lists for Wikipedia’s Android and iOS apps

From the archives Technology

Users on both apps can now bookmark articles, organize them into lists of articles, and share those lists across devices.

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A mockup of the new page previews feature, using the English Wikipedia's article on the Andromedia Galaxy.

Here’s everything we published from the design, development, and data process for the page previews feature

Features From the archives Technology Wikipedia

As an open and transparent organization, most of our documentation is placed online, able to be viewed and emulated by anyone. Here's a list of the documentation for one of our recently released features.

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Hello, my name is ________: Searching for names is not always straightforward

Foundation From the archives Technology

Names can be surprisingly complicated. What you think of as “your name” is probably a constellation of variations on a theme—possibly with a few random bits and bobs mixed in for good measure. Names that travel across cultures, languages, or writing systems cause all sorts of additional complications.

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