gem/oq-engine
Nov 2024 – Mar 2026
6 Months active
Languages Used
RSTPythonCSVN/AXML
Technical Skills
DocumentationTechnical WritingBackend DevelopmentGeospatial AnalysisData ConversionGeotechnical Engineering
Lana Todorovic
PROFILE
Lana Todorovic
Over six months, contributed to the gem/oq-engine repository by developing and refining backend features for seismic hazard and landslide risk modeling. Work included integrating the Abrahamson & Bhasin 2020 GMPE, enhancing multi-IMT ground motion parameter computation, and improving landslide model input handling. Applied Python and XML configuration to implement robust data validation, numerical modeling, and scientific computing workflows. Addressed stability in liquefaction and hazard probability calculations by validating input ranges and clarifying threshold logic. Emphasized maintainability through comprehensive testing, documentation improvements, and clear changelog entries, resulting in more reliable risk assessment tools and streamlined user-facing documentation for technical stakeholders.
Overall Statistics
Feature vs Bugs
50%Features
Repository Contributions
25Total
Bugs
4
Commits
25
Features
4
Lines of code
2,698
Activity Months6
Your Network
47 peopleShared Repositories
34
Work History
March 2026
2 Commits
Mar 1, 2026March 2026 monthly summary for gem/oq-engine: Delivered stability improvements to liquefaction and hazard probability calculations by validating input ranges and clarifying threshold logic. Clipping input pga/pgv to valid ranges reduces runtime warnings and ensures consistent numerical behavior; hazard thresholding refactored to use a defined minimum hazard constant for clarity and alignment across calculations. These changes enhance reliability of hazard estimates used in downstream risk analytics, improving confidence for stakeholders and reducing noise in logs.
2 Commits
Mar 1, 2026March 2026 monthly summary for gem/oq-engine: Delivered stability improvements to liquefaction and hazard probability calculations by validating input ranges and clarifying threshold logic. Clipping input pga/pgv to valid ranges reduces runtime warnings and ensures consistent numerical behavior; hazard thresholding refactored to use a defined minimum hazard constant for clarity and alignment across calculations. These changes enhance reliability of hazard estimates used in downstream risk analytics, improving confidence for stakeholders and reducing noise in logs.
March 2026
November 2025
4 Commits • 1 Features
Nov 1, 2025November 2025 development cycle focused on expanding ground motion parameter computation across multiple IMTs, with isolated statistics for non-PGV and non-Arias IMTs, and expanding test coverage to Scenario 36. Implemented consolidation of IMT handling, introduced separate mean and standard deviation calculations, and updated test data and cases. Addressed stability issues such as zero-sigma errors and improved compatibility with existing models (Macedo2019). Added tests to validate the new behavior, increasing test coverage and reliability. The changes enhance risk assessment accuracy for multi-IMT scenarios and improve maintainability of the oq-engine module.
November 2025
4 Commits • 1 Features
Nov 1, 2025November 2025 development cycle focused on expanding ground motion parameter computation across multiple IMTs, with isolated statistics for non-PGV and non-Arias IMTs, and expanding test coverage to Scenario 36. Implemented consolidation of IMT handling, introduced separate mean and standard deviation calculations, and updated test data and cases. Addressed stability issues such as zero-sigma errors and improved compatibility with existing models (Macedo2019). Added tests to validate the new behavior, increasing test coverage and reliability. The changes enhance risk assessment accuracy for multi-IMT scenarios and improve maintainability of the oq-engine module.
October 2025
11 Commits • 1 Features
Oct 1, 2025Month 2025-10 — gem/oq-engine: Delivered enhanced GMPE integration and validation for the active shallow crust hazard model, with conditional ground motion modeling, coefficient updates, verification state, refactoring utilities, and expanded test coverage and configurations. This work improves model fidelity, configurability, and reliability for risk assessments and scenario analyses.
11 Commits • 1 Features
Oct 1, 2025Month 2025-10 — gem/oq-engine: Delivered enhanced GMPE integration and validation for the active shallow crust hazard model, with conditional ground motion modeling, coefficient updates, verification state, refactoring utilities, and expanded test coverage and configurations. This work improves model fidelity, configurability, and reliability for risk assessments and scenario analyses.
October 2025
May 2025
6 Commits • 2 Features
May 1, 2025May 2025 summary for gem/oq-engine: Implemented precise slope input handling for landslide models, fixed critical acceleration calculation, and enhanced documentation for secondary perils inputs. All changes were supported by updated tests, changelog entries, and improved readability, ensuring clearer traceability and maintainability while delivering measurable improvements in model accuracy and reliability.
May 2025
6 Commits • 2 Features
May 1, 2025May 2025 summary for gem/oq-engine: Implemented precise slope input handling for landslide models, fixed critical acceleration calculation, and enhanced documentation for secondary perils inputs. All changes were supported by updated tests, changelog entries, and improved readability, ensuring clearer traceability and maintainability while delivering measurable improvements in model accuracy and reliability.
March 2025
1 Commits
Mar 1, 2025Concise monthly summary for 2025-03 focusing on business value and technical achievements for gem/oq-engine.
1 Commits
Mar 1, 2025Concise monthly summary for 2025-03 focusing on business value and technical achievements for gem/oq-engine.
March 2025
November 2024
1 Commits
Nov 1, 2024Month 2024-11 — gem/oq-engine focused on documentation quality and user clarity. No new features delivered this month; primary effort was a targeted documentation rendering fix that improves math equation formatting and parameter descriptions.
November 2024
1 Commits
Nov 1, 2024Month 2024-11 — gem/oq-engine focused on documentation quality and user clarity. No new features delivered this month; primary effort was a targeted documentation rendering fix that improves math equation formatting and parameter descriptions.
Activity
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Quality Metrics
Correctness89.2%
Maintainability84.0%
Architecture83.2%
Performance83.2%
AI Usage20.8%
Skills & Technologies
Programming Languages
CSVN/APythonRSTXML
Technical Skills
Backend DevelopmentData ConversionDocumentationGeospatial AnalysisGeotechnical EngineeringNumerical ModelingPythonPython developmentPython programmingSoftware DevelopmentTechnical WritingTestingUnit TestingXML configurationback end development
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline