Cross-wiki Search Result Improvements/ja

新規目標
ディスカバリー部門は検索をかけると同じ言語のウィキメディア姉妹プロジェクトの結果も表示できないか可能性を探ってきました（一般的にクロスウィキcross-wiki とかウィキ間検索inter-wiki と呼ばれる機能 . ）

一例としてフランス語版ウィキボヤージュを閲覧中に「milk 」を検索したとすると、フランス語版のウィキペディアに加えて 同ウィキメディア姉妹プロジェクト（ウィクショナリーfr.wiktionaryやウィキクオートfr.wikiquote）の検索結果も、あわせて表示されるということです.

このページを使ったディスカバリー部門の構想を大まかにご紹介し、実行可能な変更について、トークページでは寄稿者の皆さんに自由に議論をお願いできればと考えました.

設計思想
ウィキメディアのプロジェクトでは従来、検索に基本原則がありました. 各プロジェクトの言語版ごとに独自の索引があり、検索に使っていました. そのためすべてのウィキプロジェクトを対象にして 同時に 検索をかけ、関連のある結果を得ることは不可能だったのです. ところがバックエンドから見ると（プロジェクトは異なっても）検索する言語は共通で、ユーザーは同じ言語の姉妹プロジェクトの情報にも興味があるのではないかと考えられたのです.

プロジェクトを横断して（同じ言語の）検索結果を示すと訪問者に提供する情報が増え、他のプロジェクトの認知度が高まり、さらにオンウィキで検索する訪問者にとっては、検索結果がゼロという場合が減ることも含め、ウィキメディアを検索する価値が高まります.

他のプロジェクトから検索結果を返すと、単に姉妹プロジェクトの認知度を高めるだけにとどまらず、興味をひかれる記事が増えるばかりか、もっと寄稿したいという意欲を誘う可能性があります.

なぜもっと早く取り組まなかったのか?
すべての言語版を網羅する巨大な検索結果を表示してはどうでしょうか？
 * 理由のひとつは技術的な複雑さにあります. 場合によっては検索結果が数百ギガバイトに達すると予想されるのです. 一例として英語版ウィキペディアの全記事のデータベース索引はおよそ200ギガバイトです.  Providing search results quickly would be negatively impacted if having just one very large database index.
 * Another reason for this 'one language' search results approach is that it probably wouldn't be very useful to search for a topic across all languages. Searching for "Paris, France" and seeing generally the same article in French, German, and English wouldn't help very much in discovering new information.

The English language wiki projects are quite large:
 * English Wikipedia index for all English article pages is approximately 200 GB
 * English Wikinews is approximately 15 GB
 * English Wikisource is approximately 6 GB

This might impact various existing wiki workflows by displaying additional search results.
 * This could possibly affect bots, contributors, researchers, readers, etc.

計画
In the first quarter (July - September 2016) the engineering team will continue to work on the following four main steps:

First


 * Combine indexes within the same languages.
 * Ask for the help from the community - which includes the discussion on this page. ✅
 * The Search and Design teams at WMF will create mockups of how these new search results might be displayed. ✅

Second

By the end of the next quarter (October - December 2016) the team will compare search satisfaction. This will be done:


 * after the cross-wiki index is ready for several pre-selected languages ✅
 * after running A/B tests to collect real time data with which to analyze ❌
 * and get the UI mocks finalized for front end testing here: ✅
 * while also creating a Labs instance for early testing. ✅

Third

In the this quarter (January - March 2017), we will:


 * begin A/B testing for the front end of this new feature for analysis and feedback from the community.
 * continue to refine and enhance the back end for this feature
 * First A/B/C test was run and found to be not very conclusive  ✅
 * Second A/B test will be run, after fixing a minor UI bug and adding four more Wikipedias to test on, for a total of eight.

Fourth

April - June 2017:


 * wrap up analysis of the second A/B test for the sister projects snippets in the search results page
 * release translated note to Village Pumps announcing the production deployment
 * release blog post about search
 * release into production on all Wikipedias

現行の検索の例
There are already a few community-led solutions to provide additional discovery of other Wikimedia projects and articles in the same language. Here is a small collection of examples:

Current search results pages for a few language wikis:


 * Hatian Creole:
 * https://ht.wikipedia.org/wiki/Espesyal:Chache/Milk
 * Entries at the page-bottom are added via mw:Extension:ArticlePlaceholder
 * French:
 * https://fr.wikipedia.org/wiki/Spécial:Recherche/Milk
 * Entries at the page-bottom are added via d:User:Yair rand/WikidataInfo.js
 * Italian:
 * https://it.wikipedia.org/w/index.php?title=Speciale:Ricerca/Milk&fulltext=1
 * Entries at the page-bottom are added via d:User:Yair rand/WikidataInfo.js
 * Navbox at the page-side is added via w:it:MediaWiki:Search-interwiki-custom

External Search Gadget:
 * mw:MediaWiki:Gadget-externalsearch.js
 * This gadget will search a custom list of technical sites, giving a multi-tab result list and is further explained at Wikimedia technical search
 * Here is a screenshot of this custom action (unfortunately, searching for "google.com/cse" can trigger a spam filter message for some browsers)

How could these additional search results be displayed?
The appearance of search results is open for discussion and we have some rough drafts for you to look at below with more design possibilities on Design. Here are a few examples of what a new search results page could look like based on existing solutions on other language wikis:

Help us choose the solution
Please provide your feedback now!
 * Two quarters are needed, at a minimum, to architect and design the technical implementation.
 * The team would like to have something to test and to show to the community sometime in late 2016.
 * We've decided on the mocks in that will be tested in the first quarter of 2017.

質問
The team has many questions and this is what we'd like to request feedback on from the community:


 * 1) How do we want these new, additional, relevant search results to be displayed?
 * 2) Should the results from whatever wiki you're on to be shown first and then have an option to show more from other wikis?
 * 3) Should the additional results be inter-mixed with the local wiki results?
 * 4) Should the additional results be displayed off to the side (or maybe the bottom) of the results page?
 * 5) Should we have the option to turn off  these other relevant search results (a user and/or project opt-out)?
 * 6) * This could be a keyword search term or maybe a button for a visitor to click
 * 7) * This could also be similar to the  keyword that will only search for images on the local wiki and not Commons files, for instance.
 * 8) Would the additional results be best displayed as a list or a grid design?
 * 9) Should we include relevant metadata (images and/or a short description) with the search results?
 * 10) Do the results need to have the size of the article (i.e.:  ) and the date it was created/modified?
 * 11) Should we indicate that clicking on a result will take you to another wiki project?
 * 12) How many results from other wikis should we show - 1, 2, 3, or more?
 * 13) Should we limit the existing method of displaying results from the wiki that you searched on?
 * 14) * We currently show up to 10,000 results in a paginated manner, but testing shows that generally only the first 3 results are ever acted upon.
 * 15) Do we want these new search results to work across all Wikimedia projects?
 * 16) For example, if I'm on Wikiquote, do I want to also see relevant search results from Wikivoyage, Wikipedia or Wikinews?
 * 17) Or, if I'm on Wikipedia, just show me results from other projects?
 * 18) Would these other relevant search results be useful and encourage deeper exploration into various topics?
 * 19) Is it annoying to see the other wiki search results?
 * 20) Conversely, does it encourage a user to discover more knowledge?
 * 21) How much weight do we give results from other wiki projects in the results?
 * 22) Will the display of the additional search results from other wikis encourage contributions from editors?
 * 23) i.e.: if you search for   and don't see a Wikivoyage article about it (while I'm searching on Wikiquote), would that encourage you to start an article for it?
 * 24) Should we limit the amount of languages we search in?
 * 25) i.e.: only use the top 50 languages to implement this in?
 * 26) Or, only use the languages that we are detecting queries in an other language than the wiki the user is on?

See also: Explore similar, Wiktionary widget, thumbnail icons in search results

 * - Design notes and illustrations on how search results might appear
 * Explore Similar links on the search results page
 * A/B testing information
 * Self-guided testing step-by-step instructions
 * Wiktionary widget on the search results page
 * A/B testing information
 * Self-guided testing step-by-step instructions
 * Adding thumbnail icons to search results
 * A/B testing information

Phabricator tickets:


 * https://phabricator.wikimedia.org/T137312
 * https://phabricator.wikimedia.org/T136639
 * https://phabricator.wikimedia.org/T139310

Discussion notes:


 * https://etherpad.wikimedia.org/p/interwiki-implications
 * https://etherpad.wikimedia.org/p/inter-wiki
 * https://etherpad.wikimedia.org/p/multi_project_indices

A/B Testing
After taking into account community feedback and design team recommendations, we'll start A/B testing soon. View this page for more information.

Self-guided testing
This page was created to encourage users to do their own testing, via a self-guided testing page with examples for those not-so-technical and those that have a Wikipedia account and are a little more experienced.