# D4D Schema Description Quality Report
**Generated:** 2026-04-08
---

## Executive Summary

**Total schema elements:** 772
**Elements with descriptions:** 772 (100.0%)
**Missing descriptions:** 0

**Average description length:** 87 characters, 12.2 words
**Descriptions with examples:** 97 (12.6%)

### Quality Distribution

- **Excellent (90-100):** 626
- **Good (70-89):** 121
- **Fair (50-69):** 25
- **Poor (<50):** 0

### Common Issues

- **Brief:** 217 (28.1%)
- **No Period:** 160 (20.7%)
- **Stub Text:** 21 (2.7%)
- **Too Short:** 8 (1.0%)
- **Not Capitalized:** 3 (0.4%)

---

## Per-Module Analysis

### D4D_Base_import

**Coverage:** 201/201 (100.0%)
**Avg length:** 66 chars
**Quality:** Excellent: 144, Good: 52, Fair: 5, Poor: 0
**Top issues:** no_period (84), brief (78), too_short (4)

### D4D_Collection

**Coverage:** 28/28 (100.0%)
**Avg length:** 88 chars
**Quality:** Excellent: 25, Good: 0, Fair: 3, Poor: 0
**Top issues:** brief (5), stub_text (3)

### D4D_Composition

**Coverage:** 78/78 (100.0%)
**Avg length:** 95 chars
**Quality:** Excellent: 71, Good: 0, Fair: 7, Poor: 0
**Top issues:** stub_text (7), brief (4), no_period (1)

### D4D_Data_Governance

**Coverage:** 46/46 (100.0%)
**Avg length:** 120 chars
**Quality:** Excellent: 44, Good: 1, Fair: 1, Poor: 0
**Top issues:** brief (12), no_period (2), stub_text (1)

### D4D_Distribution

**Coverage:** 7/7 (100.0%)
**Avg length:** 113 chars
**Quality:** Excellent: 7, Good: 0, Fair: 0, Poor: 0
**Top issues:** brief (1)

### D4D_Ethics

**Coverage:** 13/13 (100.0%)
**Avg length:** 150 chars
**Quality:** Excellent: 11, Good: 0, Fair: 2, Poor: 0
**Top issues:** stub_text (2)

### D4D_Evaluation_Summary

**Coverage:** 153/153 (100.0%)
**Avg length:** 53 chars
**Quality:** Excellent: 101, Good: 50, Fair: 2, Poor: 0
**Top issues:** brief (73), no_period (56), stub_text (2)

### D4D_FileCollection

**Coverage:** 28/28 (100.0%)
**Avg length:** 58 chars
**Quality:** Excellent: 12, Good: 15, Fair: 1, Poor: 0
**Top issues:** brief (21), no_period (16), too_short (1)

### D4D_Human

**Coverage:** 28/28 (100.0%)
**Avg length:** 105 chars
**Quality:** Excellent: 28, Good: 0, Fair: 0, Poor: 0

### D4D_Maintenance

**Coverage:** 20/20 (100.0%)
**Avg length:** 90 chars
**Quality:** Excellent: 20, Good: 0, Fair: 0, Poor: 0
**Top issues:** brief (5)

### D4D_Metadata

**Coverage:** 1/1 (100.0%)
**Avg length:** 189 chars
**Quality:** Excellent: 1, Good: 0, Fair: 0, Poor: 0

### D4D_Minimal

**Coverage:** 4/4 (100.0%)
**Avg length:** 74 chars
**Quality:** Excellent: 4, Good: 0, Fair: 0, Poor: 0
**Top issues:** brief (1)

### D4D_Motivation

**Coverage:** 17/17 (100.0%)
**Avg length:** 117 chars
**Quality:** Excellent: 17, Good: 0, Fair: 0, Poor: 0
**Top issues:** brief (2)

### D4D_Preprocessing

**Coverage:** 30/30 (100.0%)
**Avg length:** 115 chars
**Quality:** Excellent: 28, Good: 0, Fair: 2, Poor: 0
**Top issues:** brief (3), stub_text (2)

### D4D_Uses

**Coverage:** 18/18 (100.0%)
**Avg length:** 99 chars
**Quality:** Excellent: 18, Good: 0, Fair: 0, Poor: 0
**Top issues:** brief (5)

### D4D_Variables

**Coverage:** 30/30 (100.0%)
**Avg length:** 84 chars
**Quality:** Excellent: 26, Good: 3, Fair: 1, Poor: 0
**Top issues:** brief (5), too_short (3), stub_text (1)

### data_sheets_schema

**Coverage:** 70/70 (100.0%)
**Avg length:** 159 chars
**Quality:** Excellent: 69, Good: 0, Fair: 1, Poor: 0
**Top issues:** brief (2), stub_text (1)

---

## Recommendations

3. **Remove stub/placeholder text:** 21 descriptions contain TODO/TBD/placeholders
5. **Add more examples:** Only 12.6% of descriptions include examples

