refactor: Replace hardcoded URIs with ontology lookups and remove whitespaces in GenderExtractor

[vaibhav45sktech]

Replaces hardcoded URI strings with context.ontology lookups and improves code quality.

Changes:

• Use context.ontology.properties() and context.ontology.classes() instead of raw URIs
• Fix pronoun regex: word boundaries + case-insensitive + proper escaping
• Pre-instantiate langStringDatatype at class level
• Handle division-by-zero in gender ratio calculation
• Clean up whitespace and formatting

Resolves issue #825

Summary by CodeRabbit

Release Notes

• Improvements
  • Enhanced gender extraction with improved validation for entity recognition
  • Better language-specific output formatting in results

[coderabbitai]

📝 Walkthrough

Walkthrough

Refactors GenderExtractor to use ontology-derived properties instead of hard-coded strings, introduces explicit language code extraction and gender mapping from configuration, adds Person-type verification, reworks pronoun counting with case-insensitive word-boundary matching, and implements threshold-based gender determination with ratio validation.

Changes

Cohort / File(s)

Summary

Gender Extractor Logic Refactoring core/src/main/scala/org/dbpedia/extraction/mappings/GenderExtractor.scala

Replaces string-constant predicates with context.ontology lookups (foaf:gender, rdf:type); adds language code extraction and pronoun mapping from GenderExtractorConfig; introduces Person-type verification check; reworks text analysis to count pronouns with case-insensitive word-boundary matching; replaces pairwise max/min comparisons with sorted-count approach; implements explicit threshold logic (minDifference, minCount) for gender determination; outputs single Quad with langString datatype only when thresholds are met

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~30 minutes

Possibly related issues

• GenderExtractor: Replace hardcoded URI strings with ontology lookups #810: Directly addresses the same file and objective of replacing hard-coded ontology URIs with context.ontology lookups, indicating coordinated refactoring toward ontology-driven implementation.

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately reflects the main refactoring changes: replacing hardcoded URIs with ontology lookups and improving regex patterns with proper word boundaries.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.

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✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[vaibhav45sktech]

Greetings @jimkont ,Kindly review my pr whenever available