Chris Coutinho
137d1d6c75
This commit addresses critical performance issues with vector visualization search (reducing time from 40s to ~2s) and improves result visualization through better visual encoding. ## Performance Fixes ### 1. Fix blocking sleep in retry decorator (base.py:51) - Changed `time.sleep(5)` to `await anyio.sleep(5)` in @retry_on_429 - Prevents entire event loop from freezing during rate limit retries - Impact: Reduced search time from 22s to 16s initially ### 2. Add concurrency limiting for verification (verification.py:77-93) - Added `anyio.Semaphore(20)` to limit concurrent HTTP requests - Prevents connection pool exhaustion (RequestError) from 90+ simultaneous requests - Fixes false filtering (was filtering 77/90 results incorrectly) - Note: Semaphore still in code but verification removed from viz endpoint ### 3. Remove unnecessary verification from viz endpoint (viz_routes.py:483-486) - Visualization only needs Qdrant metadata (title, excerpt), not full content - Verification only required for sampling (LLM needs full note content) - Impact: Reduced search time from 43.7s to ~2s (final fix) ### 4. Restore streaming scanner pattern (scanner.py) - Process notes one-at-a-time using async generator - Avoids loading all notes into memory ## Visualization Improvements ### 5. Result-relative score normalization (viz_routes.py:489-504) - Normalize scores within result set: best=1.0, worst=0.0 - Removes arbitrary RRF normalization (theoretical max didn't make sense) - Makes visual encoding meaningful regardless of algorithm scores ### 6. Power scaling for marker sizes (userinfo_routes.py:743) - Changed from linear `8 + (score * 12)` to power `6 + (score² * 14)` - Creates dramatic visual contrast: 0.0→6px, 0.5→9.5px, 1.0→20px - Combined with opacity (0.2-1.0) for clear visual hierarchy ### 7. Multi-channel visual encoding (userinfo_routes.py:740-745) - Size: Exponentially scaled with score² - Opacity: Linear 0.2-1.0 (keeps all points visible) - Color: Viridis gradient (blue→yellow) - Effect: Top results are large/bright/opaque, context results small/dim/transparent ## Result - Search time: 40s → ~2s (20x faster) - Visual contrast: Subtle → dramatic (clear result hierarchy) - No arbitrary cutoffs: All results visible, best naturally highlighted 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
613 lines
25 KiB
Python
613 lines
25 KiB
Python
"""Vector visualization routes for testing search algorithms.
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Provides a web UI for users to test different search algorithms on their own
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indexed documents and visualize results in 2D space using PCA.
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All processing happens server-side following ADR-012:
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- Search execution via shared search/algorithms.py
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- PCA dimensionality reduction (768-dim → 2D)
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- Only 2D coordinates + metadata sent to client
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- Bandwidth-efficient (2 floats per doc vs 768)
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"""
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import logging
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import time
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import numpy as np
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from starlette.authentication import requires
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from starlette.requests import Request
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from starlette.responses import HTMLResponse, JSONResponse
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from nextcloud_mcp_server.config import get_settings
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from nextcloud_mcp_server.search import (
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FuzzySearchAlgorithm,
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HybridSearchAlgorithm,
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KeywordSearchAlgorithm,
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SemanticSearchAlgorithm,
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)
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from nextcloud_mcp_server.vector.pca import PCA
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from nextcloud_mcp_server.vector.qdrant_client import get_qdrant_client
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logger = logging.getLogger(__name__)
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@requires("authenticated", redirect="oauth_login")
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async def vector_visualization_html(request: Request) -> HTMLResponse:
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"""Vector visualization page with search controls and interactive plot.
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Provides UI for testing search algorithms with real-time visualization.
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Requires vector sync to be enabled.
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Args:
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request: Starlette request object
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Returns:
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HTML page with search interface
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"""
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settings = get_settings()
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if not settings.vector_sync_enabled:
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return HTMLResponse(
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"""
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<div>
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<h2>Vector Visualization</h2>
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<div style="padding: 20px; background: #fff3cd; border: 1px solid #ffc107; border-radius: 4px;">
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Vector sync is not enabled. Set VECTOR_SYNC_ENABLED=true to use this feature.
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</div>
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</div>
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"""
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)
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# Get user info from auth context
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username = (
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request.user.display_name
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if hasattr(request.user, "display_name")
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else "unknown"
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)
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html_content = f"""
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<style>
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.viz-card {{
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background: white;
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border-radius: 8px;
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padding: 20px;
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margin-bottom: 20px;
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box-shadow: 0 2px 4px rgba(0,0,0,0.1);
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}}
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.viz-controls {{
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margin-bottom: 20px;
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}}
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.viz-control-row {{
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display: grid;
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grid-template-columns: 2fr 1fr auto;
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gap: 12px;
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margin-bottom: 12px;
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align-items: end;
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}}
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.viz-control-group {{
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margin-bottom: 15px;
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}}
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.viz-control-group label {{
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display: block;
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margin-bottom: 5px;
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font-weight: 500;
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color: #333;
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}}
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.viz-control-group input[type="text"],
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.viz-control-group input[type="number"],
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.viz-control-group select {{
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width: 100%;
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padding: 8px 12px;
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border: 1px solid #ddd;
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border-radius: 4px;
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font-size: 14px;
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}}
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.viz-control-group input[type="range"] {{
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width: 100%;
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}}
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.viz-control-group select[multiple] {{
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min-height: 100px;
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}}
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.viz-weight-display {{
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display: inline-block;
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min-width: 40px;
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text-align: right;
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color: #666;
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}}
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.viz-btn {{
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background: #0066cc;
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color: white;
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border: none;
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padding: 10px 20px;
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border-radius: 4px;
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cursor: pointer;
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font-size: 14px;
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font-weight: 500;
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}}
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.viz-btn:hover {{
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background: #0052a3;
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}}
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.viz-btn-secondary {{
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background: #6c757d;
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color: white;
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border: none;
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padding: 6px 12px;
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border-radius: 4px;
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cursor: pointer;
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font-size: 13px;
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margin-bottom: 12px;
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}}
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.viz-btn-secondary:hover {{
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background: #5a6268;
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}}
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#viz-plot-container {{
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width: 100%;
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height: 600px;
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position: relative;
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}}
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#viz-plot {{
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width: 100%;
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height: 100%;
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}}
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.viz-loading {{
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text-align: center;
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padding: 40px;
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color: #666;
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}}
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.viz-loading-overlay {{
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position: absolute;
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inset: 0;
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display: flex;
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align-items: center;
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justify-content: center;
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background: white;
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color: #666;
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}}
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.viz-no-results {{
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text-align: center;
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padding: 40px;
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color: #666;
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font-style: italic;
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}}
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.viz-advanced-section {{
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margin-top: 16px;
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padding: 16px;
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background: #f8f9fa;
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border-radius: 4px;
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border: 1px solid #dee2e6;
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}}
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.viz-advanced-grid {{
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display: grid;
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grid-template-columns: 1fr 1fr;
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gap: 20px;
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}}
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.viz-info-box {{
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background: #e3f2fd;
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border-left: 4px solid #2196f3;
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padding: 12px;
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margin-bottom: 20px;
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font-size: 14px;
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}}
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</style>
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<div x-data="vizApp()">
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<div class="viz-card">
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<h2>Vector Visualization</h2>
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<div class="viz-info-box">
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Testing search algorithms on your indexed documents. User: <strong>{username}</strong>
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</div>
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<form @submit.prevent="executeSearch">
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<div class="viz-controls">
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<!-- Main Controls -->
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<div class="viz-control-group">
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<label>Search Query</label>
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<input type="text" x-model="query" placeholder="Enter search query..." required />
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</div>
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<div class="viz-control-row">
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<div class="viz-control-group" style="margin-bottom: 0;">
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<label>Algorithm</label>
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<select x-model="algorithm">
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<option value="semantic">Semantic (Vector Similarity)</option>
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<option value="keyword">Keyword (Token Matching)</option>
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<option value="fuzzy">Fuzzy (Character Overlap)</option>
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<option value="hybrid" selected>Hybrid (RRF Fusion)</option>
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</select>
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</div>
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<div style="display: flex; align-items: flex-end;">
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<button type="submit" class="viz-btn" style="width: 100%;">Search & Visualize</button>
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</div>
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<div style="display: flex; align-items: flex-end;">
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<button type="button" class="viz-btn-secondary" @click="showAdvanced = !showAdvanced" style="white-space: nowrap;">
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<span x-text="showAdvanced ? 'Hide Advanced' : 'Advanced'"></span>
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</button>
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</div>
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</div>
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<!-- Advanced Options (Collapsible) -->
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<div class="viz-advanced-section" x-show="showAdvanced" x-transition.opacity.duration.200ms>
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<h3 style="margin-top: 0; margin-bottom: 16px; font-size: 16px;">Advanced Options</h3>
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<div class="viz-advanced-grid">
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<div class="viz-control-group">
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<label>Document Types</label>
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<select x-model="docTypes" multiple>
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<option value="">All Types (cross-app search)</option>
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<option value="note">Notes</option>
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<option value="file">Files</option>
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<option value="calendar">Calendar Events</option>
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<option value="contact">Contacts</option>
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<option value="deck">Deck Cards</option>
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</select>
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<small style="color: #666; display: block; margin-top: 4px;">
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Hold Ctrl/Cmd to select multiple
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</small>
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</div>
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<div>
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<div class="viz-control-group">
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<label>Score Threshold (Semantic/Hybrid)</label>
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<input type="number" x-model.number="scoreThreshold" min="0" max="1" step="0.1" />
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</div>
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<div class="viz-control-group">
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<label>Result Limit</label>
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<input type="number" x-model.number="limit" min="1" max="100" />
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</div>
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</div>
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</div>
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<!-- Hybrid Weights (only when hybrid selected) -->
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<div x-show="algorithm === 'hybrid'" style="margin-top: 16px; padding: 12px; background: #e9ecef; border-radius: 4px;">
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<label style="margin-bottom: 12px; display: block;">Hybrid Algorithm Weights</label>
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<div style="margin-bottom: 8px;">
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<label style="display: inline-block; width: 100px; font-weight: normal;">Semantic:</label>
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<input type="range" x-model.number="semanticWeight" min="0" max="1" step="0.1" style="width: 200px; display: inline-block;">
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<span class="viz-weight-display" x-text="semanticWeight.toFixed(1)"></span>
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</div>
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<div style="margin-bottom: 8px;">
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<label style="display: inline-block; width: 100px; font-weight: normal;">Keyword:</label>
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<input type="range" x-model.number="keywordWeight" min="0" max="1" step="0.1" style="width: 200px; display: inline-block;">
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<span class="viz-weight-display" x-text="keywordWeight.toFixed(1)"></span>
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</div>
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<div>
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<label style="display: inline-block; width: 100px; font-weight: normal;">Fuzzy:</label>
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<input type="range" x-model.number="fuzzyWeight" min="0" max="1" step="0.1" style="width: 200px; display: inline-block;">
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<span class="viz-weight-display" x-text="fuzzyWeight.toFixed(1)"></span>
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</div>
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</div>
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</div>
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</div>
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</form>
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</div>
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<div class="viz-card">
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<div id="viz-plot-container">
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<div x-show="loading" class="viz-loading-overlay" x-transition.opacity.duration.200ms>
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Executing search and computing PCA projection...
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</div>
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<div id="viz-plot" x-show="!loading" x-transition.opacity.duration.200ms></div>
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</div>
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</div>
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<div class="viz-card">
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<h3>Search Results (<span x-text="loading ? '...' : results.length"></span>)</h3>
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<div x-show="loading" class="viz-loading" x-transition.opacity.duration.200ms>
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Loading results...
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</div>
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<div x-show="!loading && results.length === 0" class="viz-no-results" x-transition.opacity.duration.200ms>
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No results found. Try a different query or adjust your search parameters.
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</div>
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<template x-if="!loading && results.length > 0">
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<div x-transition.opacity.duration.200ms>
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<template x-for="result in results" :key="result.id">
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<div style="padding: 12px; border-bottom: 1px solid #eee;">
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<a :href="getNextcloudUrl(result)" target="_blank" style="font-weight: 500; color: #0066cc; text-decoration: none;">
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<span x-text="result.title"></span>
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</a>
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<div style="font-size: 14px; color: #666; margin-top: 4px;" x-text="result.excerpt"></div>
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<div style="font-size: 12px; color: #999; margin-top: 4px;">
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Score: <span x-text="result.score.toFixed(3)"></span> |
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Type: <span x-text="result.doc_type"></span>
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</div>
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</div>
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</template>
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</div>
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</template>
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</div>
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</div>
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"""
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return HTMLResponse(content=html_content)
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@requires("authenticated", redirect="oauth_login")
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async def vector_visualization_search(request: Request) -> JSONResponse:
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"""Execute server-side search and return 2D coordinates + results.
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All processing happens server-side:
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1. Execute search via shared algorithm module
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2. Fetch matching vectors from Qdrant
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3. Apply PCA reduction (768-dim → 2D)
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4. Return coordinates + metadata only
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Args:
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request: Starlette request with query parameters
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Returns:
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JSON response with coordinates_2d and results
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"""
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settings = get_settings()
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if not settings.vector_sync_enabled:
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return JSONResponse(
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{"success": False, "error": "Vector sync not enabled"},
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status_code=400,
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)
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# Get user info from auth context
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username = (
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request.user.display_name if hasattr(request.user, "display_name") else None
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)
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if not username:
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return JSONResponse(
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{"success": False, "error": "User not authenticated"},
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status_code=401,
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)
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# Parse query parameters
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query = request.query_params.get("query", "")
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algorithm = request.query_params.get("algorithm", "hybrid")
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limit = int(request.query_params.get("limit", "50"))
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score_threshold = float(request.query_params.get("score_threshold", "0.7"))
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semantic_weight = float(request.query_params.get("semantic_weight", "0.5"))
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keyword_weight = float(request.query_params.get("keyword_weight", "0.3"))
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fuzzy_weight = float(request.query_params.get("fuzzy_weight", "0.2"))
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# Parse doc_types (comma-separated list, None = all types)
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doc_types_param = request.query_params.get("doc_types", "")
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doc_types = doc_types_param.split(",") if doc_types_param else None
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logger.info(
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f"Viz search: user={username}, query='{query}', "
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f"algorithm={algorithm}, limit={limit}, doc_types={doc_types}"
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)
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try:
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# Start total request timer
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request_start = time.perf_counter()
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# Get authenticated HTTP client from session
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# In BasicAuth mode: uses username/password from session
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# In OAuth mode: uses access token from session
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from nextcloud_mcp_server.auth.userinfo_routes import (
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_get_authenticated_client_for_userinfo,
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)
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async with await _get_authenticated_client_for_userinfo(request) as http_client: # noqa: F841
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# Create search algorithm (no client needed - verification removed)
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if algorithm == "semantic":
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search_algo = SemanticSearchAlgorithm(score_threshold=score_threshold)
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elif algorithm == "keyword":
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search_algo = KeywordSearchAlgorithm()
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elif algorithm == "fuzzy":
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search_algo = FuzzySearchAlgorithm()
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elif algorithm == "hybrid":
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search_algo = HybridSearchAlgorithm(
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semantic_weight=semantic_weight,
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keyword_weight=keyword_weight,
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fuzzy_weight=fuzzy_weight,
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)
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else:
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return JSONResponse(
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{"success": False, "error": f"Unknown algorithm: {algorithm}"},
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status_code=400,
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)
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# Execute search (supports cross-app when doc_types=None)
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# Get unverified results with buffer for filtering
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search_start = time.perf_counter()
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all_results = []
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if doc_types is None or len(doc_types) == 0:
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# Cross-app search - search all indexed types
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unverified_results = await search_algo.search(
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query=query,
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user_id=username,
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limit=limit * 2, # Buffer for verification filtering
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doc_type=None, # Search all types
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score_threshold=score_threshold,
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)
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all_results.extend(unverified_results)
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else:
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# Search each document type and combine
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for doc_type in doc_types:
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unverified_results = await search_algo.search(
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query=query,
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user_id=username,
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limit=limit * 2, # Buffer for verification filtering
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doc_type=doc_type,
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score_threshold=score_threshold,
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)
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all_results.extend(unverified_results)
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# Sort by score before verification
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all_results.sort(key=lambda r: r.score, reverse=True)
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# No verification needed for visualization - we only need Qdrant metadata
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# (title, excerpt, doc_type) which is already in search results.
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# Verification is only needed for sampling (LLM needs full content).
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search_results = all_results[:limit]
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search_duration = time.perf_counter() - search_start
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# Normalize scores relative to this result set for better visualization
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# (best result = 1.0, worst result = 0.0 within THIS result set)
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# This makes visual encoding meaningful regardless of RRF normalization
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if search_results:
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scores = [r.score for r in search_results]
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min_score, max_score = min(scores), max(scores)
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score_range = max_score - min_score if max_score > min_score else 1.0
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logger.info(
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f"Normalizing scores for viz: original range [{min_score:.3f}, {max_score:.3f}] "
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f"→ [0.0, 1.0]"
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)
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# Rescale each result's score to 0-1 within this result set
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for r in search_results:
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r.score = (r.score - min_score) / score_range
|
|
|
|
if not search_results:
|
|
return JSONResponse(
|
|
{
|
|
"success": True,
|
|
"results": [],
|
|
"coordinates_2d": [],
|
|
"message": "No results found",
|
|
}
|
|
)
|
|
|
|
# Fetch vectors for matching results from Qdrant
|
|
vector_fetch_start = time.perf_counter()
|
|
qdrant_client = await get_qdrant_client()
|
|
doc_ids = [r.id for r in search_results]
|
|
|
|
# Retrieve vectors for the matching documents
|
|
from qdrant_client.models import FieldCondition, Filter, MatchAny
|
|
|
|
points_response = await qdrant_client.scroll(
|
|
collection_name=settings.get_collection_name(),
|
|
scroll_filter=Filter(
|
|
must=[
|
|
FieldCondition(
|
|
key="doc_id",
|
|
match=MatchAny(any=[str(doc_id) for doc_id in doc_ids]),
|
|
),
|
|
FieldCondition(
|
|
key="user_id",
|
|
match={"value": username},
|
|
),
|
|
]
|
|
),
|
|
limit=len(doc_ids) * 2, # Account for multiple chunks per doc
|
|
with_vectors=True,
|
|
with_payload=["doc_id"], # Need doc_id to map vectors to results
|
|
)
|
|
|
|
points = points_response[0]
|
|
|
|
if not points:
|
|
return JSONResponse(
|
|
{
|
|
"success": True,
|
|
"results": [],
|
|
"coordinates_2d": [],
|
|
"message": "No vectors found for results",
|
|
}
|
|
)
|
|
|
|
# Extract vectors
|
|
vectors = np.array([p.vector for p in points if p.vector is not None])
|
|
vector_fetch_duration = time.perf_counter() - vector_fetch_start
|
|
|
|
if len(vectors) < 2:
|
|
# Not enough points for PCA
|
|
return JSONResponse(
|
|
{
|
|
"success": True,
|
|
"results": [
|
|
{
|
|
"id": r.id,
|
|
"doc_type": r.doc_type,
|
|
"title": r.title,
|
|
"excerpt": r.excerpt,
|
|
"score": r.score,
|
|
}
|
|
for r in search_results
|
|
],
|
|
"coordinates_2d": [[0, 0]] * len(search_results),
|
|
"message": "Not enough vectors for PCA",
|
|
}
|
|
)
|
|
|
|
# Apply PCA dimensionality reduction (768-dim → 2D)
|
|
pca_start = time.perf_counter()
|
|
pca = PCA(n_components=2)
|
|
coords_2d = pca.fit_transform(vectors)
|
|
pca_duration = time.perf_counter() - pca_start
|
|
|
|
# After fit, these attributes are guaranteed to be set
|
|
assert pca.explained_variance_ratio_ is not None
|
|
|
|
logger.info(
|
|
f"PCA explained variance: PC1={pca.explained_variance_ratio_[0]:.3f}, "
|
|
f"PC2={pca.explained_variance_ratio_[1]:.3f}"
|
|
)
|
|
|
|
# Map results to coordinates (use first chunk per document)
|
|
result_coords = []
|
|
seen_doc_ids = set()
|
|
|
|
for point, coord in zip(points, coords_2d):
|
|
if point.payload:
|
|
doc_id = int(point.payload.get("doc_id", 0))
|
|
if doc_id not in seen_doc_ids and doc_id in doc_ids:
|
|
seen_doc_ids.add(doc_id)
|
|
result_coords.append(coord.tolist())
|
|
|
|
# Build response
|
|
response_results = [
|
|
{
|
|
"id": r.id,
|
|
"doc_type": r.doc_type,
|
|
"title": r.title,
|
|
"excerpt": r.excerpt,
|
|
"score": r.score,
|
|
}
|
|
for r in search_results
|
|
]
|
|
|
|
# Calculate total request duration
|
|
total_duration = time.perf_counter() - request_start
|
|
|
|
# Log comprehensive timing metrics
|
|
logger.info(
|
|
f"Viz search timing: total={total_duration * 1000:.1f}ms, "
|
|
f"search={search_duration * 1000:.1f}ms ({search_duration / total_duration * 100:.1f}%), "
|
|
f"vector_fetch={vector_fetch_duration * 1000:.1f}ms ({vector_fetch_duration / total_duration * 100:.1f}%), "
|
|
f"pca={pca_duration * 1000:.1f}ms ({pca_duration / total_duration * 100:.1f}%), "
|
|
f"results={len(search_results)}, vectors={len(vectors)}"
|
|
)
|
|
|
|
return JSONResponse(
|
|
{
|
|
"success": True,
|
|
"results": response_results,
|
|
"coordinates_2d": result_coords[: len(search_results)],
|
|
"pca_variance": {
|
|
"pc1": float(pca.explained_variance_ratio_[0]),
|
|
"pc2": float(pca.explained_variance_ratio_[1]),
|
|
},
|
|
"timing": {
|
|
"total_ms": round(total_duration * 1000, 2),
|
|
"search_ms": round(search_duration * 1000, 2),
|
|
"vector_fetch_ms": round(vector_fetch_duration * 1000, 2),
|
|
"pca_ms": round(pca_duration * 1000, 2),
|
|
"num_results": len(search_results),
|
|
"num_vectors": len(vectors),
|
|
},
|
|
}
|
|
)
|
|
|
|
except Exception as e:
|
|
logger.error(f"Viz search error: {e}", exc_info=True)
|
|
return JSONResponse(
|
|
{"success": False, "error": str(e)},
|
|
status_code=500,
|
|
)
|