Discovery/Status updates/2019-01-21

This is the weekly update for the week starting 2019-01-21

Search

 * Trey did a write up about his ideas for the wrong keyboard implementation and UI, and the new language models and parameter optimization for TextCat for the wrong-keyboard and wrong-encoding detection.
 * Trey also reviewed, updated and manually re-built the Hebmorph plugin for ElasticSearch 6 with help from the rest of the Search team
 * David double checked that chi to psi/omega indices are no longer used and delete them.
 * David also worked on dropping the "archive" type in the general index
 * David wrapped up on moving the phrase suggest related code to its FallbackMethod
 * Erik worked on modifying Wikidata entity completion search for per-language tuning parameters
 * Erik also worked on a bug where we didn't retain cross-cluster identifier in OtherIndexes
 * Erik fulfilled a feature request to add chronological sorting by-page-creation-timestamp for search results
 * David also upgraded the Elasticsearch plugins extra, extra-analysis and highlighter to elasticsearch 6.5.4
 * Stas is working on separating ElasticSearch parts of Wikibase into a separate extension

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