Phi Hung contributed to the world-federation-of-advertisers/cross-media-measurement repository by engineering robust reporting and measurement pipelines that improved data accuracy, reliability, and observability. Over 11 months, he designed and implemented features such as advanced reach calculations, demographic slicing, and weekly non-cumulative measurement support, using Python, Kotlin, and Protocol Buffers. His work included refactoring core data structures, introducing CLI tools for post-processing, and enhancing logging for error diagnosis and auditability. By addressing edge cases like incomplete data and backward compatibility, Phi Hung delivered solutions that streamlined analytics delivery and ensured the reporting system could adapt to evolving business and technical requirements.
October 2025 focused on delivering core enhancements to the ReportProcessing pipeline in the cross-media-measurement project, with an emphasis on accuracy, reliability, and operational visibility. The team completed proto-level upgrades for ReportSummaryV2, tightened validation around large corrections to reduce noise, fixed key correctness gaps in union handling, and enhanced logging to capture processing outcomes. These changes translate into more trustworthy cross-media measurement data and faster triage when issues arise, supporting better business decisions for advertisers and measurement partners.
October 2025 focused on delivering core enhancements to the ReportProcessing pipeline in the cross-media-measurement project, with an emphasis on accuracy, reliability, and operational visibility. The team completed proto-level upgrades for ReportSummaryV2, tightened validation around large corrections to reduce noise, fixed key correctness gaps in union handling, and enhanced logging to capture processing outcomes. These changes translate into more trustworthy cross-media measurement data and faster triage when issues arise, supporting better business decisions for advertisers and measurement partners.
Month: 2025-09. Focused delivery on reliability, backward-compatible population coding, enhanced post-processor logging, and weekly non-cumulative measurements in the cross-media measurement pipeline. The team implemented a backward-compatible population coding path and updated demographic filters/constants with corresponding tests. Post-processor logging was hardened to persist to storage even when noise correction errors occur, including an INTERNAL_ERROR status and richer debug details for large corrections. Weekly non-cumulative measurements support was added, with refactored measurement handling and updated protobuf dependencies to enable granular weekly analysis. These changes improve data accuracy, observability, and analytical capabilities, delivering immediate business value in reporting reliability and timeliness.
Month: 2025-09. Focused delivery on reliability, backward-compatible population coding, enhanced post-processor logging, and weekly non-cumulative measurements in the cross-media measurement pipeline. The team implemented a backward-compatible population coding path and updated demographic filters/constants with corresponding tests. Post-processor logging was hardened to persist to storage even when noise correction errors occur, including an INTERNAL_ERROR status and richer debug details for large corrections. Weekly non-cumulative measurements support was added, with refactored measurement handling and updated protobuf dependencies to enable granular weekly analysis. These changes improve data accuracy, observability, and analytical capabilities, delivering immediate business value in reporting reliability and timeliness.
August 2025 — Delivered a key refactor to the report processing layer, establishing a Campaign MeasurementSet Data Structure to consolidate all measurements for a campaign. The work clarified data flows, improved maintainability, and sets the stage for scalable cross-media analytics. No major bugs fixed this month; minor stability improvements were addressed as part of ongoing maintenance. This aligns with business goals to streamline reporting pipelines and enable faster analytics delivery.
August 2025 — Delivered a key refactor to the report processing layer, establishing a Campaign MeasurementSet Data Structure to consolidate all measurements for a campaign. The work clarified data flows, improved maintainability, and sets the stage for scalable cross-media analytics. No major bugs fixed this month; minor stability improvements were addressed as part of ongoing maintenance. This aligns with business goals to streamline reporting pipelines and enable faster analytics delivery.
July 2025 monthly summary for world-federation-of-advertisers/cross-media-measurement: Delivered resilience improvements in report processing by supporting incomplete data scenarios and preventing data loss. Implemented data path changes, added tests, and fixed the report processor to tolerate missing data, enhancing overall reliability and business value of cross-media measurement pipelines.
July 2025 monthly summary for world-federation-of-advertisers/cross-media-measurement: Delivered resilience improvements in report processing by supporting incomplete data scenarios and preventing data loss. Implemented data path changes, added tests, and fixed the report processor to tolerate missing data, enhancing overall reliability and business value of cross-media measurement pipelines.
June 2025 — Cross-media measurement pipeline improvements delivered two major features that enhance data processing reliability, release automation, and reporting completeness for world-federation-of-advertisers/cross-media-measurement. The changes improve measurement accuracy, reduce manual steps in release post-processing, and increase resilience to partial data.
June 2025 — Cross-media measurement pipeline improvements delivered two major features that enhance data processing reliability, release automation, and reporting completeness for world-federation-of-advertisers/cross-media-measurement. The changes improve measurement accuracy, reduce manual steps in release post-processing, and increase resilience to partial data.
May 2025 summary for world-federation-of-advertisers/cross-media-measurement focused on delivering key reporting enhancements, improving post-processing observability, and expanding metrics support, all aimed at increasing accuracy, reliability, and business value of cross-media reporting.
May 2025 summary for world-federation-of-advertisers/cross-media-measurement focused on delivering key reporting enhancements, improving post-processing observability, and expanding metrics support, all aimed at increasing accuracy, reliability, and business value of cross-media reporting.
April 2025 monthly summary for the World Federation of Advertisers — Cross-Media Measurement. Focused on delivering robust, observable post-processing of reports and strengthening data quality signals to drive trust and faster decision-making for campaigns.
April 2025 monthly summary for the World Federation of Advertisers — Cross-Media Measurement. Focused on delivering robust, observable post-processing of reports and strengthening data quality signals to drive trust and faster decision-making for campaigns.
March 2025 monthly performance: Cross-Media Measurement: Implemented critical Post-Processing Report Accuracy Enhancements to improve variance estimation and rounding behavior in reported metrics. The changes include using the maximum variance for derived reach measurements, switching from truncation to rounding for float-to-integer conversions across measurement types, and updating tests to reflect total weight handling. These changes enhance accuracy, reduce bias in unique reach calculations, and improve the reliability of advertiser-facing reports.
March 2025 monthly performance: Cross-Media Measurement: Implemented critical Post-Processing Report Accuracy Enhancements to improve variance estimation and rounding behavior in reported metrics. The changes include using the maximum variance for derived reach measurements, switching from truncation to rounding for float-to-integer conversions across measurement types, and updating tests to reflect total weight handling. These changes enhance accuracy, reduce bias in unique reach calculations, and improve the reliability of advertiser-facing reports.
February 2025 monthly summary for world-federation-of-advertisers/cross-media-measurement: Delivered expanded reporting capabilities and reinforced robustness in the measurement pipeline, enabling more granular and reliable advertiser insights while strengthening test coverage and proto alignment.
February 2025 monthly summary for world-federation-of-advertisers/cross-media-measurement: Delivered expanded reporting capabilities and reinforced robustness in the measurement pipeline, enabling more granular and reliable advertiser insights while strengthening test coverage and proto alignment.
January 2025 — Delivered reliability and observability enhancements for the cross-media measurement pipeline, expanded QA coverage for model rollout and measurement calculations, and fixed critical noise processing constraints to ensure data integrity and accurate final metrics. These efforts improve reliability, accuracy, and business value of measurement outputs.
January 2025 — Delivered reliability and observability enhancements for the cross-media measurement pipeline, expanded QA coverage for model rollout and measurement calculations, and fixed critical noise processing constraints to ensure data integrity and accurate final metrics. These efforts improve reliability, accuracy, and business value of measurement outputs.
December 2024 monthly summary: Delivered substantial enhancements to the report processing pipeline in world-federation-of-advertisers/cross-media-measurement, focusing on reach accuracy, measurement flexibility, and policy customization. Implemented comprehensive reach measurement capabilities and extended policy support to better serve business insights and client requirements.
December 2024 monthly summary: Delivered substantial enhancements to the report processing pipeline in world-federation-of-advertisers/cross-media-measurement, focusing on reach accuracy, measurement flexibility, and policy customization. Implemented comprehensive reach measurement capabilities and extended policy support to better serve business insights and client requirements.
Overview of all repositories you've contributed to across your timeline