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Analyze results of article recommendation experiment
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Description

Background

As part of T370209 ([EPIC] Experiment: Display article recommendations in more prominent locations) we're running an experiment (T373584-Build second recommendation experiment within browser extension) where users who download our browser extension get shown article recommendations in the sidebar:

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The goal of this task is to analyse the instrumentation and metrics from this experiment.

Requirements

The instrumentation for this experiment is stored in StatsD and is accessible via Graphite queries. Although the experiment was running on many wikis, we're interested in results for English Wikipedia and Spanish Wikipedia.

Metrics definitions

Daily enabled/click metrics are available for export from the following Grapha dashboard:
https://grafana-rw.wikimedia.org/d/d3d538c9-00c3-4b4f-9e79-71cfcb3f0c75/web-experiments?forceLogin=&orgId=1&from=1726001580000&to=1728489045020&viewPanel=8

Event Timeline

Jdlrobson raised the priority of this task from Medium to High.Oct 17 2024, 4:58 PM
jwang updated the task description. (Show Details)
Analysis Summary
  • Report on the overall clickthrough rate for sidebar article recommendations coming from the browser extension
    • On English wikipedia (enwiki) desktop, the overall CTR for sidebar article recommendation is 0.54%
    • On Spanish wikipedia (eswiki) desktop, the overall CTR for sidebar articles recommendation is 0.28%

Daily trend of English Wikipedia (enwiki)

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Daily trend of Spanish Wikipedia (eswiki)

image.png (574×1 px, 78 KB)

  • Compare to clickthrough rate for related pages on desktop
    • We observed that the CTR for sidebar article recommendations is higher than that for related pages on desktop for both English Wikipedia and Spanish Wikipedia.
      • English Wikipedia (enwiki): 0.41% ->0.54% , increased 0.13 pp
      • Spanish Wikipedia (eswiki): 0.13% -> 0.28%, increased 0.15 pp
ComparisonEnglish WikipediaSpanish Wikipedia
CTR of sidebar article0.54%0.28%
CTR of related pages (baseline, from analysis of T374965)0.41%0.13%
DIfference0.13%0.15%

Note: The above summary is based on the data collected between 2024-10-01 and 2024-10-14. Please find the detailed data in the Google Sheet.