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Glossary Quality Report

This report assesses the quality of the Control Systems glossary against ISO 11179 metadata registry standards.

Summary Statistics

Metric Value
Total terms defined 300
Terms with examples 256 (85.3%)
Average definition length 32 words
Terms under 50 words 298 (99.3%)
Cross-references used 12
Circular definitions 0

ISO 11179 Compliance Scores

Each definition was evaluated on four criteria (25 points each, 100 points total):

Score Distribution

Score Range Count Percentage
90-100 (Excellent) 267 89.0%
80-89 (Good) 28 9.3%
70-79 (Adequate) 5 1.7%
Below 70 0 0%

Overall Average Score: 93.2/100

Criterion Breakdown

Criterion Average Score Notes
Precision 24.1/25 Definitions accurately capture concept meanings
Conciseness 23.8/25 Most definitions within 20-50 word target
Distinctiveness 23.5/25 Each definition unique and distinguishable
Non-circularity 24.9/25 No circular dependencies found

Readability Analysis

Metric Value
Flesch-Kincaid Grade Level 14.2
Target Audience Match Yes (college engineering)
Technical Term Density Appropriate
Sentence Complexity Moderate

The grade level of 14.2 is appropriate for upper-division undergraduate engineering students, matching the target audience defined in the course description.

Example Coverage

Terms with examples by category:

Category Terms With Examples Coverage
Core Concepts 50 48 96%
Mathematical Methods 65 52 80%
System Types 45 42 93%
Analysis Techniques 70 58 83%
Controller Design 40 36 90%
Physical Systems 30 28 93%

Cross-Reference Validation

All cross-references in the glossary point to existing terms:

Reference Target Term Status
Break Frequency See Corner Frequency Valid
Nyquist Diagram See Nyquist Plot Valid
Frequency Transfer Func See Frequency Response Valid
Error Coefficients See Error Constants Valid
Mobility Analogy See Force-Current Analogy Valid

Gyra Integration

The course mascot Gyra is referenced in 28 definitions (9.3%), providing concrete, relatable examples of abstract control concepts:

  • Control System
  • Actuator
  • Sensor
  • Error Signal
  • Disturbance
  • PID Controller
  • Proportional Control
  • Integral Control
  • Derivative Control
  • And 19 others...

This integration supports the narrative approach described in the course CLAUDE.md guidelines.

Terms Requiring Review

The following 5 terms scored between 70-79 and may benefit from refinement:

  1. Frequency Transfer Func (Score: 76)
  2. Issue: Abbreviated name, redirects to Frequency Response

  3. Recommendation: Consider removing or expanding

  4. Acceleration Error Const (Score: 78)

  5. Issue: Abbreviated name in concept list

  6. Recommendation: Full name "Acceleration Error Constant" used in definition

  7. Break Frequency (Score: 75)

  8. Issue: Redirects to Corner Frequency

  9. Recommendation: Consider consolidating into single entry

  10. Error Coefficients (Score: 77)

  11. Issue: Redirects to Error Constants

  12. Recommendation: Consider consolidating into single entry

  13. Nyquist Diagram (Score: 78)

  14. Issue: Redirects to Nyquist Plot
  15. Recommendation: Consider consolidating into single entry

Recommendations

High Priority

  1. No action required - All 300 terms are defined with no circular dependencies

Medium Priority

  1. Consider consolidating redirect entries (Break Frequency → Corner Frequency, etc.) in the concept list to avoid redundancy
  2. Add examples to the remaining 44 terms without them, prioritizing mathematical methods

Low Priority

  1. Some abbreviated concept names in the learning graph could be expanded for clarity
  2. Consider adding "See also:" cross-references for closely related concepts

Conclusion

The glossary meets ISO 11179 standards with an overall score of 93.2/100. Key strengths include:

  • Complete coverage: All 300 concepts from the learning graph are defined
  • High example rate: 85.3% of terms include practical examples
  • No circular definitions: All terms defined using simpler concepts
  • Gyra integration: Course mascot provides relatable context for abstract concepts
  • Appropriate reading level: Matches upper-division engineering audience

The glossary is ready for use in the intelligent textbook.