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<!doctype html>
<html lang="en" data-theme="dark">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>ExplainGrade — Advanced ASAG System</title>
<meta
name="description"
content="Explainable Automated Short Answer Grading with sentence-level attribution and semantic drift analysis."
/>
<link rel="preconnect" href="https://fonts.googleapis.com" />
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
<link
href="https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=IBM+Plex+Sans:wght@400;500;600;700&display=swap"
rel="stylesheet"
/>
<link rel="stylesheet" href="style.css" />
</head>
<body>
<div class="bg-blobs">
<div class="blob blob-1"></div>
<div class="blob blob-2"></div>
<div class="blob blob-3"></div>
</div>
<!-- ═══ NAVBAR ═══ -->
<nav class="navbar" id="navbar">
<div class="container">
<a href="index.html" class="nav-logo">🔬 ExplainGrade</a>
<ul class="nav-links">
<li><a href="index.html" class="nav-link active">Home</a></li>
<li><a href="pipeline.html" class="nav-link">Pipeline</a></li>
<li><a href="research.html" class="nav-link">Research</a></li>
<li><a href="usage.html" class="nav-link">How to Use</a></li>
<li><a href="chat.html" class="nav-link">Assistant 💬</a></li>
<li><a href="analytics.html" class="nav-link">Analytics 📊</a></li>
<li>
<a href="technologies.html" class="nav-link">Technologies 🔧</a>
</li>
<li>
<a href="test_results.html" class="nav-link">Test Results ✅</a>
</li>
</ul>
<div class="nav-actions">
<button class="btn btn-secondary" id="theme-toggle">☀️</button>
<a
href="https://github.com/manikeshmk/Explainable_Summary_Score"
target="_blank"
class="btn btn-primary"
style="padding: 0.5rem 1rem"
>GitHub</a
>
</div>
</div>
</nav>
<!-- ═══ HERO ═══ -->
<header class="hero">
<div class="container hero-grid">
<div class="hero-content">
<span class="eyebrow">Explainable AI · Assessment Intelligence</span>
<h1 class="hero-title">Explainable short-answer scoring</h1>
<p class="hero-subtitle">
Run the dual-stage pipeline that powers this project: lexical
alignment, semantic reranking, and rich evidence surfaces for every
teacher + student pair.
</p>
<div class="hero-actions">
<a href="#demo" class="btn btn-primary hero-cta"
>Launch Live Demo</a
>
<a href="#batch" class="btn btn-link">Review Batch Runner</a>
</div>
<div class="hero-metrics">
<div class="metric-pill">
<span class="metric-label">Latency</span>
<span class="metric-value">~2.3s</span>
</div>
<div class="metric-pill">
<span class="metric-label">Explainers</span>
<span class="metric-value">SHAP · Drift</span>
</div>
<div class="metric-pill">
<span class="metric-label">Deployments</span>
<span class="metric-value">Vercel / Local</span>
</div>
</div>
</div>
<div class="hero-panel">
<div class="panel-card hero-info-card">
<p class="panel-label">Pipeline snapshot</p>
<div class="pipeline-steps">
<div class="pipeline-step">
<span class="step-badge">Stage I</span>
<div>
<strong>Lexical alignment</strong>
<p>
Anchor extraction, edit distance, and semantic overlap
establish a safe floor before reranking.
</p>
</div>
</div>
<div class="pipeline-step">
<span class="step-badge">Stage II</span>
<div>
<strong>Semantic reranking</strong>
<p>
Concept clustering + drift scoring highlight where the
student summary diverges.
</p>
</div>
</div>
</div>
</div>
<div class="panel-card hero-info-card">
<p class="panel-label">What the live demo shows</p>
<ul class="hero-points">
<li>Predicted grade with verdict narrative</li>
<li>SHAP bars, sentence attributions, anchor coverage</li>
<li>Semantic drift matrix, concept map, batch exports</li>
<li>📈 Temporal learning analysis (multi-submission tracking)</li>
</ul>
<p class="panel-note">
Everything renders in-browser using <code>scorer.js</code>,
explainability modules, and temporal drift research.
</p>
</div>
</div>
</div>
</header>
<!-- ═══ LIVE DEMO ═══ -->
<section class="section" id="demo">
<div class="container">
<div class="glass-card">
<div class="section-heading">
<div>
<p class="eyebrow">Live evaluation workspace</p>
<h2>✍️ Live Scoring Demo</h2>
<p class="section-subtitle">
Paste a teacher reference and a student response. We will run
the dual-stage pipeline and surface explainability artifacts
instantly.
<span
style="
display: block;
margin-top: 0.75rem;
font-size: 0.95rem;
color: var(--text-dim);
"
>
💡 <strong>Temporal Analysis:</strong> Submit multiple answers
to see learning trajectory, improvement scores, and
consistency metrics.
</span>
</p>
</div>
<div class="heading-actions">
<button class="btn btn-secondary btn-sm" id="try-sample">
Sample 1 · Perfect Match
</button>
<button class="btn btn-secondary btn-sm" id="try-sample-2">
Sample 2 · Transcript Summary
</button>
</div>
</div>
<div class="demo-grid">
<form id="demo-form">
<div class="form-group">
<label class="form-label">Reference / Teacher Answer</label>
<textarea
id="ref-answer"
class="form-control"
rows="8"
placeholder="Paste the ideal answer or teacher script summary here..."
required
></textarea>
</div>
<div class="form-group">
<label class="form-label">Student Answer / Summary</label>
<textarea
id="stu-answer"
class="form-control"
rows="8"
placeholder="Paste the student's response here..."
required
></textarea>
</div>
<div style="display: flex; gap: 1rem; align-items: flex-end">
<div class="form-group" style="flex: 1">
<label class="form-label">Max Score</label>
<input
id="max-score"
type="number"
class="form-control"
value="10"
min="1"
max="100"
/>
</div>
<button
id="compute-score-btn"
type="submit"
class="btn btn-primary"
style="flex: 2; height: 50px; margin-bottom: 1.5rem"
>
⚡ Compute Score
</button>
</div>
</form>
<div id="results-placeholder" class="results-placeholder">
<span>📊</span>
<p>Fill the form to see explainable results.</p>
</div>
<div id="results-content" class="hidden">
<div class="score-main glass-card" style="padding: 2rem">
<div class="score-circle" id="score-circle">
<div class="score-value-wrap">
<span class="score-value" id="score-val">--</span>
<span class="score-max" id="score-max-val">/ 10</span>
</div>
</div>
<h3 style="margin-bottom: 0.5rem">Predicted Grade</h3>
<p
id="score-verdict"
style="color: var(--text-dim); font-size: 0.9rem"
></p>
</div>
</div>
</div>
<div
id="xai-content"
class="hidden"
style="
margin-top: 3rem;
border-top: 1px solid var(--border-glass);
padding-top: 30px;
"
>
<h2 class="mb-4">🔍 Explainability Dashboard</h2>
<div class="xai-grid">
<div class="viz-card glass-card xai-card span-2">
<div class="viz-header">
<h3 class="viz-title">📝 Summary Feedback</h3>
<span class="badge" style="margin-bottom: 0"
>Plain English</span
>
</div>
<div class="viz-body">
<div id="explanation-body" class="xai-text-body"></div>
</div>
</div>
<div class="viz-card glass-card xai-card">
<div class="viz-header">
<h3 class="viz-title">📊 Metric Impact (SHAP)</h3>
</div>
<div class="viz-body">
<div id="shap-body" class="shap-body"></div>
<p class="viz-footnote">
Green = positive impact, Red = negative impact compared to
average.
</p>
</div>
</div>
<div class="viz-card glass-card xai-card span-2">
<div class="viz-header">
<h3 class="viz-title">🧭 Score Waterfall</h3>
<span class="badge" style="margin-bottom: 0"
>Contribution path</span
>
</div>
<div class="viz-body">
<canvas
id="waterfall-canvas"
class="waterfall-canvas"
width="900"
height="340"
></canvas>
<div id="waterfall-legend" class="waterfall-legend"></div>
<p class="viz-footnote">
This chart stacks each feature contribution to show how the
final score is built.
</p>
</div>
</div>
<div class="viz-card glass-card xai-card">
<div class="viz-header">
<h3 class="viz-title">📋 Student Metric Coverage</h3>
<span class="badge" style="margin-bottom: 0"
>Data-driven</span
>
</div>
<div class="viz-body">
<div id="metric-comparison" class="dual-bar-grid"></div>
<p class="viz-footnote">
Each bar shows how strongly the student response covers that
metric.
</p>
</div>
</div>
<div class="viz-card glass-card xai-card">
<div class="viz-header">
<h3 class="viz-title">📐 Feature Balance Radar</h3>
<span class="badge" style="margin-bottom: 0"
>5-D Metrics</span
>
</div>
<div class="viz-body">
<canvas
id="metric-radar"
class="radar-canvas"
width="360"
height="300"
></canvas>
<p class="viz-footnote">
Normalized snapshot of semantic, lexical, and coverage
signals.
</p>
</div>
</div>
<div class="viz-card glass-card xai-card">
<div class="viz-header">
<h3 class="viz-title">💬 Sentence Attribution</h3>
<span class="badge" style="margin-bottom: 0"
>ExASAG (BEA 2023)</span
>
</div>
<div class="viz-body">
<div
id="sentence-attribution-body"
class="xai-scroll-body"
></div>
</div>
</div>
<div class="viz-card glass-card xai-card">
<div class="viz-header">
<h3 class="viz-title">🌡️ Sentence Impact Heatmap</h3>
<span class="badge" style="margin-bottom: 0">Top swings</span>
</div>
<div class="viz-body">
<div id="sentence-heatmap" class="sentence-heatmap"></div>
<p class="viz-footnote">
Bright blocks surface the most helpful or harmful sentences.
</p>
</div>
</div>
<div
class="viz-card glass-card xai-card span-2"
id="drift-timeline-card"
>
<div class="viz-header">
<h3 class="viz-title">📍 Semantic Drift Timeline</h3>
<span class="badge" style="margin-bottom: 0"
>Structure Alignment</span
>
</div>
<div class="viz-body">
<div class="timeline-strip">
<canvas
id="drift-timeline-canvas"
class="timeline-canvas"
width="640"
height="200"
></canvas>
<div
id="drift-timeline-empty"
class="timeline-empty hidden"
>
Need more overlapping anchors to trace drift.
</div>
<div id="drift-timeline-meta" class="timeline-meta"></div>
</div>
<p class="viz-description">
Alignment of Teacher Script (X: 100 parts) vs. Student
Summary (Y: 10 parts).
</p>
<div id="drift-matrix-wrap" class="drift-matrix-container">
<div id="drift-matrix" class="drift-matrix"></div>
</div>
</div>
</div>
<div class="viz-card glass-card xai-card span-2 concept-card">
<div class="viz-header">
<h3 class="viz-title">🗺️ Concept Coverage Map</h3>
</div>
<div class="viz-body">
<canvas id="cluster-canvas" width="800" height="300"></canvas>
<div id="cluster-legend" class="cluster-legend"></div>
</div>
</div>
</div>
</div>
</div>
</div>
</section>
<!-- ═══ BATCH UPLOADS ═══ -->
<section class="section" id="batch">
<div class="container">
<div class="section-heading text-center">
<div>
<p class="eyebrow">Bulk evaluation</p>
<h2>🚀 File Grade Runner</h2>
<p class="section-subtitle">
Automate grading for an entire cohort with CSV or pair long
transcripts with multi-student summaries via our XLSX workflow.
</p>
</div>
</div>
<div class="batch-grid">
<!-- CSV Batch -->
<div class="glass-card" style="border-top: 4px solid var(--accent2)">
<h3 style="margin-bottom: 1.5rem">📁 Batch CSV Grading</h3>
<p style="color: var(--text-dim); margin-bottom: 2rem">
Upload a CSV file containing columns like `question`,
`reference_answer`, and `student_answer` for bulk processing.
</p>
<div
id="upload-zone"
class="text-center"
style="
border: 2px dashed var(--border-glass);
padding: 3rem;
border-radius: var(--radius-md);
cursor: pointer;
"
>
<span style="font-size: 3rem">📄</span>
<p style="margin-top: 1rem">
Drop CSV here or <strong>browse</strong>
</p>
<input
type="file"
id="batch-file-input"
accept=".csv"
class="hidden"
/>
</div>
</div>
<!-- XLSX Transcript Eval -->
<div class="glass-card" style="border-top: 4px solid var(--primary)">
<h3 style="margin-bottom: 1.5rem">📊 Script Evaluation (XLSX)</h3>
<p style="color: var(--text-dim); margin-bottom: 1rem">
Grade multiple student summaries (.xlsx) against a long Meet
transcript (.docx).
</p>
<div
style="display: grid; grid-template-columns: 1fr 1fr; gap: 1rem"
>
<div
id="script-upload-zone"
class="upload-zone"
style="
border: 2px dashed var(--border-glass);
padding: 1.5rem;
border-radius: var(--radius-md);
font-size: 0.85rem;
text-align: center;
cursor: pointer;
"
>
<div style="font-weight: 600; margin-bottom: 0.35rem">
Teacher .docx
</div>
<p class="upload-file-name" id="script-upload-filename">
No file selected yet
</p>
<input
type="file"
id="script-file-input"
accept=".docx"
class="hidden"
/>
</div>
<div
id="summary-upload-zone"
class="upload-zone"
style="
border: 2px dashed var(--border-glass);
padding: 1.5rem;
border-radius: var(--radius-md);
font-size: 0.85rem;
text-align: center;
cursor: pointer;
"
>
<div style="font-weight: 600; margin-bottom: 0.35rem">
Student .xlsx
</div>
<p class="upload-file-name" id="summary-upload-filename">
No file selected yet
</p>
<input
type="file"
id="summary-file-input"
accept=".xlsx"
class="hidden"
/>
</div>
</div>
<button
id="run-script-eval-btn"
class="btn btn-primary"
style="width: 100%; margin-top: 1.5rem"
disabled
>
Run Class Evaluation
</button>
<p id="script-eval-status" class="eval-status hidden">
Class evaluation in progress...
</p>
</div>
</div>
<div
id="batch-progress"
class="hidden"
style="margin-top: 2rem; text-align: center"
></div>
<div id="batch-results" class="hidden" style="margin-top: 3rem">
<div id="batch-table-wrap" class="glass-card batch-table-card"></div>
<!-- ANALYTICS VISUALIZATION SECTION -->
<div
id="batch-analytics-container"
class="hidden"
style="margin-top: 3rem"
>
<h2 style="margin-bottom: 2rem">📊 Batch Analytics Summary</h2>
<div id="batch-anomalies" class="analytics-grid"></div>
<div id="batch-peer-comparison" class="analytics-grid"></div>
<div id="batch-learning-curves" class="analytics-grid"></div>
<div id="batch-momentum" class="analytics-grid"></div>
<div id="batch-coverage" class="analytics-grid"></div>
</div>
</div>
</div>
</section>
<!-- ═══ FOOTER ═══ -->
<footer class="footer">
<div class="container">
<div class="footer-links">
<a href="pipeline.html" class="footer-link">Pipeline</a>
<a href="research.html" class="footer-link">Research</a>
<a href="usage.html" class="footer-link">Usage</a>
<a href="chat.html" class="footer-link">Assistant</a>
</div>
<p>
© 2026 ExplainGrade · Academic Project by manikeshmk · Built for
XAI in ASAG
</p>
</div>
</footer>
<div
id="toast"
class="hidden"
style="
position: fixed;
bottom: 2rem;
right: 2rem;
background: var(--bg-card);
backdrop-filter: var(--glass-blur);
border: 1px solid var(--border-glass);
padding: 1rem 2rem;
border-radius: var(--radius-md);
z-index: 9999;
box-shadow: var(--shadow-lg);
"
></div>
<script src="https://cdn.jsdelivr.net/npm/papaparse@5.4.1/papaparse.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/mammoth@1.8.0/mammoth.browser.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/xlsx@0.18.5/dist/xlsx.full.min.js"></script>
<script src="scorer.js"></script>
<script src="batch_analytics_visualizer.js"></script>
<script src="analytics-handler.js"></script>
<script src="chat.js"></script>
<script src="app.js"></script>
</body>
</html>