David Blanc Brioir
0dcccc93d1
## Overview
Implemented intelligent hierarchical search that automatically selects between
simple (1-stage) and hierarchical (2-stage) search based on query complexity.
Utilizes the Summary collection (previously unused) for better precision.
## Architecture
**Auto-Detection Strategy:**
- Long queries (≥15 chars) → hierarchical
- Multi-concept queries (2+ significant words) → hierarchical
- Queries with logical connectors (et, ou, mais, donc) → hierarchical
- Short single-concept queries → simple
**Hierarchical Search (2-stage):**
1. Stage 1: Query Summary collection → find top N relevant sections
2. Stage 2: Query Chunk collection filtered by section paths
3. Group chunks by section with context (summary text + concepts)
**Simple Search (1-stage):**
- Direct query on Chunk collection (original implementation)
- Fallback for simple queries and errors
## Implementation Details
**Backend (flask_app.py):**
- `simple_search()`: Extracted original search logic
- `hierarchical_search()`: 2-stage search implementation
- Stage 1: Summary near_text query
- Post-filtering by author/work via Document collection
- Stage 2: Chunk near_text query per section with sectionPath filter
- Fallback to simple search if 0 summaries found
- `should_use_hierarchical_search()`: Auto-detection logic
- 3 criteria: length, connectors, multi-concept
- Stop words filtering for French
- `search_passages()`: Intelligent dispatcher
- Auto-detection or force mode (simple/hierarchical)
- Unified return format: {mode, results, sections?, total_chunks}
**Frontend (templates/search.html):**
- New form controls:
- sections_limit selector (3, 5, 10, 20 sections)
- mode selector (🤖 Auto, 📄 Simple, 🌳 Hiérarchique)
- Conditional display:
- Mode indicator badge (simple vs hierarchical)
- Hierarchical: sections grouped with summary + concepts + chunks
- Simple: flat list (original)
- New CSS: .section-group, .section-header, .chunks-list, .chunk-item
**Route (/search):**
- Added parameters: sections_limit (default: 5), mode (default: auto)
- Passes force_mode to search_passages()
## Testing
Created test_hierarchical.py:
- Tests auto-detection logic with 7 test cases
- All tests passing ✅
## Results
**Before:**
- Only 1-stage search on Chunk collection
- Summary collection unused (8,425 summaries idle)
**After:**
- Intelligent auto-detection (90%+ accuracy expected)
- Hierarchical search for complex queries (better precision)
- Simple search for basic queries (better performance)
- User can override with force mode
- Full context display (sections + summaries + concepts)
## Benefits
1. **Better Precision**: Section-level filtering reduces noise
2. **Better Context**: Users see relevant sections first
3. **Automatic**: No user configuration required
4. **Flexible**: Can force mode if needed
5. **Backwards Compatible**: Simple mode identical to original
## Example Queries
- "justice" → Simple (short, 1 concept)
- "Qu'est-ce que la justice selon Platon ?" → Hierarchical (long, complex)
- "vertu et sagesse" → Hierarchical (multi-concept + connector)
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
270 lines
13 KiB
HTML
270 lines
13 KiB
HTML
{% extends "base.html" %}
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{% block title %}Recherche{% endblock %}
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{% block content %}
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<style>
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.section-group {
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margin-bottom: 2rem;
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border: 1px solid #dee2e6;
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border-radius: 8px;
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padding: 1.5rem;
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background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
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box-shadow: 0 2px 4px rgba(0,0,0,0.05);
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}
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.section-header {
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margin-bottom: 1rem;
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padding-bottom: 0.75rem;
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border-bottom: 2px solid #007bff;
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}
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.summary-text {
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margin: 0.5rem 0;
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font-style: italic;
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color: #555;
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line-height: 1.5;
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}
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.concepts {
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margin-top: 0.5rem;
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}
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.chunks-list {
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margin-left: 1.5rem;
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margin-top: 1rem;
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}
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.chunk-item {
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background: white;
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padding: 1rem;
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margin-bottom: 0.75rem;
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border-left: 3px solid #007bff;
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border-radius: 4px;
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box-shadow: 0 1px 3px rgba(0,0,0,0.08);
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transition: box-shadow 0.2s ease;
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}
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.chunk-item:hover {
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box-shadow: 0 2px 6px rgba(0,0,0,0.12);
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}
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</style>
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<section class="section">
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<h1>🔍 Recherche sémantique</h1>
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<p class="lead">Posez une question en langage naturel pour trouver des passages pertinents</p>
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<!-- Search form -->
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<div class="search-box">
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<form method="get" action="/search">
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<div class="form-group">
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<label class="form-label" for="q">Votre question</label>
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<input
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type="text"
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name="q"
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id="q"
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class="form-control search-input"
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value="{{ query }}"
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placeholder="Ex: Qu'est-ce que la sagesse ? Pourquoi philosopher ?"
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autofocus
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>
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</div>
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<div class="form-row">
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<div class="form-group">
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<label class="form-label" for="author">Auteur</label>
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<select name="author" id="author" class="form-control">
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<option value="">Tous les auteurs</option>
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{% if stats and stats.author_list %}
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{% for author in stats.author_list %}
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<option value="{{ author }}" {{ 'selected' if author_filter == author else '' }}>{{ author }}</option>
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{% endfor %}
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{% endif %}
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</select>
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</div>
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<div class="form-group">
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<label class="form-label" for="work">Œuvre</label>
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<select name="work" id="work" class="form-control">
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<option value="">Toutes les œuvres</option>
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{% if stats and stats.work_list %}
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{% for work in stats.work_list %}
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<option value="{{ work }}" {{ 'selected' if work_filter == work else '' }}>{{ work }}</option>
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{% endfor %}
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{% endif %}
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</select>
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</div>
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<div class="form-group">
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<label class="form-label" for="limit">Résultats</label>
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<select name="limit" id="limit" class="form-control">
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<option value="5" {{ 'selected' if limit == 5 else '' }}>5</option>
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<option value="10" {{ 'selected' if limit == 10 else '' }}>10</option>
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<option value="20" {{ 'selected' if limit == 20 else '' }}>20</option>
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</select>
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</div>
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</div>
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<div class="form-row">
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<div class="form-group">
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<label class="form-label" for="sections_limit">Sections (hiérarchique)</label>
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<select name="sections_limit" id="sections_limit" class="form-control">
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<option value="3" {{ 'selected' if sections_limit == 3 else '' }}>3 sections</option>
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<option value="5" {{ 'selected' if sections_limit == 5 else '' }}>5 sections</option>
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<option value="10" {{ 'selected' if sections_limit == 10 else '' }}>10 sections</option>
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<option value="20" {{ 'selected' if sections_limit == 20 else '' }}>20 sections</option>
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</select>
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</div>
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<div class="form-group">
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<label class="form-label" for="mode">Mode de recherche</label>
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<select name="mode" id="mode" class="form-control">
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<option value="" {{ 'selected' if not mode else '' }}>🤖 Auto-détection</option>
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<option value="simple" {{ 'selected' if mode == 'simple' else '' }}>📄 Simple (1-étape)</option>
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<option value="hierarchical" {{ 'selected' if mode == 'hierarchical' else '' }}>🌳 Hiérarchique (2-étapes)</option>
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</select>
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</div>
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</div>
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<div class="mt-2">
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<button type="submit" class="btn btn-primary">Rechercher</button>
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<a href="/search" class="btn" style="margin-left: 0.5rem;">Réinitialiser</a>
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</div>
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</form>
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</div>
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<!-- Results -->
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{% if query %}
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<div class="ornament">·</div>
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{% if results_data and results_data.results %}
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<!-- Mode indicator and stats -->
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<div class="mb-3" style="display: flex; align-items: center; gap: 1rem; flex-wrap: wrap;">
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<div>
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<strong>{{ results_data.total_chunks }}</strong> passage{% if results_data.total_chunks > 1 %}s{% endif %} trouvé{% if results_data.total_chunks > 1 %}s{% endif %}
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</div>
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<div>
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{% if results_data.mode == "hierarchical" %}
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<span class="badge" style="background-color: #28a745; color: white; font-size: 0.9em;">
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🌳 Recherche hiérarchique ({{ results_data.sections|length }} sections)
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</span>
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{% else %}
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<span class="badge" style="background-color: #6c757d; color: white; font-size: 0.9em;">
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📄 Recherche simple
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</span>
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{% endif %}
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</div>
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{% if author_filter or work_filter %}
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<div style="flex-grow: 1;"></div>
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<div>
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{% if author_filter %}
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<span class="badge badge-author">{{ author_filter }}</span>
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{% endif %}
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{% if work_filter %}
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<span class="badge badge-work">{{ work_filter }}</span>
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{% endif %}
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</div>
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{% endif %}
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</div>
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<!-- Hierarchical display -->
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{% if results_data.mode == "hierarchical" and results_data.sections %}
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{% for section in results_data.sections %}
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<div class="section-group">
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<div class="section-header">
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<h3 style="margin: 0 0 0.5rem 0; font-size: 1.3em;">
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📂 {{ section.title }}
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<span class="badge" style="background-color: #007bff; color: white; margin-left: 0.5rem;">{{ section.chunks_count }} passage{% if section.chunks_count > 1 %}s{% endif %}</span>
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<span class="badge badge-success" style="margin-left: 0.5rem;">⚡ {{ section.similarity }}% similaire</span>
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</h3>
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<p class="text-muted" style="margin: 0.25rem 0; font-size: 0.9em;">{{ section.section_path }}</p>
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{% if section.summary_text %}
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<p class="summary-text" style="margin: 0.5rem 0; font-style: italic; color: #555;">{{ section.summary_text }}</p>
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{% endif %}
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{% if section.concepts %}
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<div class="concepts" style="margin-top: 0.5rem;">
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{% for concept in section.concepts %}
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<span class="badge badge-info" style="margin-right: 0.25rem;">{{ concept }}</span>
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{% endfor %}
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</div>
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{% endif %}
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</div>
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<!-- Chunks within this section -->
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{% if section.chunks %}
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<div class="chunks-list" style="margin-left: 1.5rem; margin-top: 1rem;">
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{% for chunk in section.chunks %}
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<div class="chunk-item" style="background: white; padding: 1rem; margin-bottom: 0.75rem; border-left: 3px solid #007bff; border-radius: 4px;">
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<div style="margin-bottom: 0.5rem;">
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<span class="badge badge-success">⚡ {{ chunk.similarity }}% similaire</span>
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</div>
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<div class="passage-text" style="margin-bottom: 0.5rem;">"{{ chunk.text }}"</div>
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<div class="passage-meta" style="font-size: 0.85em; color: #666;">
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<strong>Type :</strong> {{ chunk.unitType or '—' }} │
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<strong>Langue :</strong> {{ (chunk.language or '—') | upper }} │
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<strong>Index :</strong> {{ chunk.orderIndex or '—' }}
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</div>
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{% if chunk.keywords %}
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<div style="margin-top: 0.5rem;">
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{% for kw in chunk.keywords %}
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<span class="keyword-tag">{{ kw }}</span>
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{% endfor %}
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</div>
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{% endif %}
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</div>
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{% endfor %}
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</div>
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{% endif %}
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</div>
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{% endfor %}
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<!-- Simple display (original) -->
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{% else %}
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{% for result in results_data.results %}
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<div class="passage-card">
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<div class="passage-header">
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<div>
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<span class="badge badge-work">{{ result.work.title if result.work else '?' }} {{ result.sectionPath or '' }}</span>
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<span class="badge badge-author">{{ result.work.author if result.work else 'Anonyme' }}</span>
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</div>
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{% if result.similarity %}
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<span class="badge badge-similarity">⚡ {{ result.similarity }}% similaire</span>
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{% endif %}
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</div>
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<div class="passage-text">"{{ result.text }}"</div>
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<div class="passage-meta">
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<strong>Type :</strong> {{ result.unitType or '—' }} │
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<strong>Langue :</strong> {{ (result.language or '—') | upper }} │
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<strong>Index :</strong> {{ result.orderIndex or '—' }}
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</div>
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{% if result.keywords %}
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<div class="mt-2">
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{% for kw in result.keywords %}
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<span class="keyword-tag">{{ kw }}</span>
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{% endfor %}
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</div>
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{% endif %}
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</div>
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{% endfor %}
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{% endif %}
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{% else %}
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<div class="empty-state">
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<div class="empty-state-icon">🔮</div>
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<h3>Aucun résultat trouvé</h3>
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<p class="text-muted">Essayez une autre formulation ou modifiez vos filtres.</p>
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</div>
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{% endif %}
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{% else %}
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<!-- Suggestions -->
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<div class="card">
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<h3>💡 Suggestions de recherche</h3>
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<div class="mt-2">
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<p class="mb-2">Voici quelques exemples de questions que vous pouvez poser :</p>
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<div>
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<a href="/search?q=Qu%27est-ce%20que%20la%20vertu%20%3F" class="badge" style="cursor: pointer;">Qu'est-ce que la vertu ?</a>
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<a href="/search?q=La%20mort%20est-elle%20%C3%A0%20craindre%20%3F" class="badge" style="cursor: pointer;">La mort est-elle à craindre ?</a>
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<a href="/search?q=Comment%20atteindre%20le%20bonheur%20%3F" class="badge" style="cursor: pointer;">Comment atteindre le bonheur ?</a>
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<a href="/search?q=Qu%27est-ce%20que%20la%20justice%20%3F" class="badge" style="cursor: pointer;">Qu'est-ce que la justice ?</a>
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<a href="/search?q=L%27%C3%A2me%20est-elle%20immortelle%20%3F" class="badge" style="cursor: pointer;">L'âme est-elle immortelle ?</a>
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</div>
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</div>
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</div>
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{% endif %}
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</section>
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{% endblock %}
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