Hey,

This is the 21st weekly update from revision scoring team that we have sent to this mailing list.

New development

- We received a request to get moving on Spanish Wikibooks support, so we dug in:

- We deployed a new Wiki labels campaign[1]

- We fixed an issue in Wiki labels that prevented requests from *. wikibooks.org[2]

- We trained a basic "revert" detection model that seems to be pretty effective[3]

- We also generated a dataset of article quality scores for English Wikipedia[4]. You can download it here: [5]

This week, we invested in some long term tasks. If you review our phabricator board, you'll see substantial progress in improving our damage detection models with hashing vectorization strategies[6, 7], implementing a more robust model testing strategy[8], and implementing some advance natural language processing strategies[9, 10]. Stay tuned for the completion of these activities in the coming weeks.

1. https://phabricator.wikimedia.org/T143962 -- Add uniqueness constraints to ores_classification 2. https://phabricator.wikimedia.org/T145406 -- Fix CORS for wikibooks 3. https://phabricator.wikimedia.org/T145428 -- Train/test reverted model for Spanish Wikibooks 4. https://phabricator.wikimedia.org/T135684 -- Generate recent article quality scores for English Wikipedia 5. https://datasets.wikimedia.org/public-datasets/enwiki/article_quality/wp10-s... 6. https://phabricator.wikimedia.org/T128087 -- [Spike] Investigate HashingVectorizer 7. https://en.wikipedia.org/wiki/Feature_hashing 8. https://phabricator.wikimedia.org/T142953 -- Train on all data, Report test statistics on cross-validation 9. https://phabricator.wikimedia.org/T144636 -- Implement PCFG features 10. https://en.wikipedia.org/wiki/Stochastic_context-free_grammar

Sincerely, Aaron from the Revision Scoring team