Upload language-families/README.md with huggingface_hub

language-families/README.md

@@ -0,0 +1,262 @@
+# Language Family Trees
+
+Phylogenetic trees of world languages in multiple formats, optimized for different visualizations and analyses.
+
+## Canonical Location
+
+**This is the canonical storage location** for all language family tree data. Files in `/home/coolhand/html/datavis/language/data/` are **symlinks** pointing to this directory to maintain backward compatibility with existing visualizations.
+
+## Dataset Versions
+
+### Primary Datasets
+
+#### `language-history.json` (4.8M) - PRIMARY VERSION
+- **Nodes**: 360 languages
+- **Structure**: Full hierarchical tree with parent-child relationships
+- **Depth**: Variable (up to 12 levels in some families)
+- **Content**: Language names, ISO 639-3 codes, family classifications, speaker populations
+- **Use Case**: Primary dataset for most language family visualizations
+- **Recommended For**: Tree layouts, force-directed networks, hierarchical visualizations
+
+#### `language-history-depth6.json` (1.9M) - FLATTENED VERSION
+- **Nodes**: 360 languages (same as primary)
+- **Structure**: Flattened to maximum depth of 6 levels
+- **Purpose**: Optimized for visualizations with limited vertical space
+- **Use Case**: Compact tree layouts, radial visualizations
+- **Recommended For**: Small screens, radial dendrograms, space-constrained layouts
+
+#### `language-history-glottolog.json` (4.6M) - ENRICHED VERSION
+- **Nodes**: 360 languages
+- **Structure**: Same as primary + Glottolog metadata
+- **Additional Data**:
+  - Glottolog languoid codes
+  - Geographic coordinates
+  - Language status (living, extinct, reconstructed)
+  - Alternative names and aliases
+- **Use Case**: Research projects requiring authoritative linguistic metadata
+- **Recommended For**: Academic visualizations, linguistic research, geographic mapping
+
+### Proto-Indo-European (PIE) Variants
+
+These datasets focus exclusively on the Indo-European language family:
+
+#### `pie-full.json` (160KB) - COMPLETE PIE TREE
+- **Scope**: All documented Indo-European languages
+- **Branches**: Germanic, Romance, Slavic, Indo-Iranian, Celtic, Hellenic, etc.
+- **Depth**: From Proto-Indo-European root to modern languages
+- **Use Case**: Full PIE family visualization
+- **Recommended For**: Indo-European focused projects, full family trees
+
+#### `pie-curated.json` (98KB) - CURATED PIE SUBSET
+- **Scope**: Major Indo-European languages (curated selection)
+- **Purpose**: Highlights most widely spoken and historically significant languages
+- **Use Case**: Simplified PIE visualization without minor dialects
+- **Recommended For**: Educational visualizations, overview presentations
+
+#### `pie-hybrid.json` (75KB) - HYBRID PIE FORMAT
+- **Scope**: Optimized selection with balanced detail
+- **Purpose**: Balanced selection - detailed but not overwhelming
+- **Use Case**: Interactive visualizations with progressive disclosure
+- **Recommended For**: Web-based exploratory interfaces
+
+### Supporting Datasets
+
+#### `speaker_counts.json` (6KB)
+- **Content**: Speaker population statistics for all languages in the main dataset
+- **Format**: `{ "iso_639_3": population_count }`
+- **Source**: Ethnologue, Glottolog aggregates
+- **Use Case**: Size encoding in visualizations (bubble size, node radius)
+
+#### `iso-639-3-aliases.json` (4KB)
+- **Content**: Alternative names and aliases for ISO 639-3 language codes
+- **Format**: `{ "iso_code": ["alias1", "alias2", ...] }`
+- **Purpose**: Enable search by alternative language names
+- **Use Case**: Search functionality, autocomplete, name disambiguation
+
+#### `language_evolution.json` (37KB) - ALTERNATIVE PHYLOGENETIC FORMAT
+- **Source**: Etymology server phylogenetic analysis
+- **Structure**: Alternative tree structure from etymological perspective
+- **Purpose**: Cross-reference and validation against main dataset
+- **Use Case**: Etymology research, comparative linguistics
+
+## Version Selection Guide
+
+| Use Case | Recommended Version | Rationale |
+|----------|---------------------|-----------|
+| **General language tree visualization** | `language-history.json` | Standard, comprehensive, well-tested |
+| **Mobile/small screen** | `language-history-depth6.json` | Reduced depth fits better in constrained space |
+| **Academic/research** | `language-history-glottolog.json` | Authoritative metadata from Glottolog |
+| **Indo-European only** | `pie-curated.json` or `pie-hybrid.json` | Focused scope, easier to navigate |
+| **Complete PIE family** | `pie-full.json` | All documented IE languages |
+| **Size-encoded visualizations** | `language-history.json` + `speaker_counts.json` | Combine for population-weighted layouts |
+| **Search/autocomplete** | Any tree + `iso-639-3-aliases.json` | Enable search by alternative names |
+
+## Data Structure
+
+### Node Format (Standard)
+
+```json
+{
+  "id": "unique_identifier",
+  "name": "Language Name",
+  "iso_639_3": "iso",
+  "parent_id": "parent_unique_id",
+  "level": 3,
+  "family": "Language Family",
+  "subfamily": "Subfamily",
+  "speakers": 1000000,
+  "status": "living",
+  "coordinates": [longitude, latitude]
+}
+```
+
+### Tree Structure
+
+```json
+{
+  "nodes": [
+    { "id": "root", "name": "World Languages", "level": 0 },
+    { "id": "ie", "name": "Indo-European", "parent_id": "root", "level": 1 },
+    { "id": "gmc", "name": "Germanic", "parent_id": "ie", "level": 2 },
+    { "id": "eng", "name": "English", "parent_id": "gmc", "level": 3, "iso_639_3": "eng" }
+  ],
+  "edges": [
+    { "source": "root", "target": "ie" },
+    { "source": "ie", "target": "gmc" },
+    { "source": "gmc", "target": "eng" }
+  ]
+}
+```
+
+## Symlink Strategy
+
+**Why symlinks?**
+- Creates single source of truth in data_trove
+- Maintains backward compatibility for existing projects
+- No code changes required in consuming visualizations
+- Easy to identify canonical location (physical file vs symlink)
+
+**Symlinked locations**:
+- `/home/coolhand/html/datavis/language/data/*.json` → All files symlinked to this directory
+
+**Consuming projects** (all work transparently via symlinks):
+1. **Poems visualizations** - 5 HTML files fetch via `../../language/data/language-history.json`
+2. **Etymology server** - Config path still valid via symlink
+3. **Language datavis** - Local data directory contains symlinks to canonical data_trove location
+4. **PNW isolates** - May reference language trees for context
+
+## Data Provenance
+
+### Sources
+- **Primary**: Glottolog 4.8 (glottolog.org)
+- **Secondary**: Ethnologue 25th edition, Wikidata, Unicode CLDR
+- **Etymology**: Diachronica database, etymological dictionaries
+- **Speaker Counts**: Ethnologue, national census data, Glottolog estimates
+
+### Last Updated
+- **2026-01-18**: Consolidated into data_trove with symlink strategy
+- **2025-01-15**: Initial creation from Glottolog 4.8 data
+
+### Update Schedule
+- **Glottolog**: Annual releases (typically February)
+- **Ethnologue**: Annual editions (typically mid-year)
+- **Recommended refresh**: Annually after Glottolog release
+
+## Usage Examples
+
+### D3.js Tree Layout
+```javascript
+d3.json('data/linguistic/language-families/language-history.json')
+  .then(data => {
+    const root = d3.hierarchy(data, d => d.children);
+    const treeLayout = d3.tree().size([height, width]);
+    treeLayout(root);
+    // Render tree
+  });
+```
+
+### Force-Directed Network
+```javascript
+d3.json('data/linguistic/language-families/language-history.json')
+  .then(data => {
+    const simulation = d3.forceSimulation(data.nodes)
+      .force('link', d3.forceLink(data.edges).id(d => d.id))
+      .force('charge', d3.forceManyBody().strength(-100))
+      .force('center', d3.forceCenter(width / 2, height / 2));
+    // Render network
+  });
+```
+
+### Size-Encoded Visualization
+```javascript
+Promise.all([
+  d3.json('data/linguistic/language-families/language-history.json'),
+  d3.json('data/linguistic/language-families/speaker_counts.json')
+]).then(([tree, speakers]) => {
+  tree.nodes.forEach(node => {
+    node.speakers = speakers[node.iso_639_3] || 0;
+    node.radius = Math.sqrt(node.speakers) / 100; // Scale appropriately
+  });
+  // Render with size encoding
+});
+```
+
+## Related Datasets
+
+### In data_trove/data/linguistic/
+- `glottolog_languoid.csv` (1.8M) - Full Glottolog catalog (8,500+ languoids)
+- `glottolog_coordinates.json` (3.8M) - Geographic coordinates for all languoids
+- `iso_639_3.json` (1.4M) - ISO 639-3 standard language codes
+- `world_languages_integrated.json` (8.1M) - Comprehensive world languages database
+
+### In diachronica corpus (reference location)
+- `/home/coolhand/servers/diachronica/corpus/historical-corpora/` - Historical text corpora
+- `/home/coolhand/servers/diachronica/etymology/` - Etymology database and visualizations
+
+## Notes
+
+- All files are valid JSON and can be validated with `jq`
+- Geographic coordinates use [longitude, latitude] format (GeoJSON convention)
+- ISO 639-3 codes are the standard three-letter language identifiers
+- Node IDs are unique within each file but may differ between versions
+- Parent-child relationships are preserved across all primary versions
+
+## Validation
+
+### Check JSON validity
+```bash
+jq . language-history.json > /dev/null && echo "✅ Valid JSON"
+```
+
+### Count nodes
+```bash
+jq '.nodes | length' language-history.json
+# Should return: 360
+```
+
+### Verify symlinks
+```bash
+ls -la /home/coolhand/html/datavis/language/data/language-history.json
+# Should show symlink to this directory
+```
+
+### Test symlink resolution
+```bash
+cat /home/coolhand/html/datavis/language/data/language-history.json | jq '.nodes | length'
+# Should return: 360 (proving symlink works)
+```
+
+## License
+
+Data sources have various licenses:
+- **Glottolog**: Creative Commons Attribution 4.0
+- **Ethnologue**: Proprietary (aggregated statistics used under fair use)
+- **Wikidata**: CC0 (public domain)
+
+Compiled dataset is released under **CC BY 4.0** - attribution required.
+
+## Contact
+
+- **Maintainer**: Luke Steuber (luke@lukesteuber.com)
+- **Project**: dr.eamer.dev/datavis/
+- **Repository**: /home/coolhand/html/datavis/data_trove/