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index.html

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<header class="hero">
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<span class="badge">Seeking Full-Time Opportunities</span>
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<h1>Jeewon Kim</h1>
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<p class="lead">CS @ Columbia (GPA 3.82 · May 2026). Full‑stack developer focused on <strong>AI systems</strong>, <strong>distributed apps</strong>, and <strong>social impact</strong> products. <br>Previously at Generous Health and TVCF, and founder of Tchelp.org.</p>
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<p class="lead">CS @ Columbia (GPA 3.88 · May 2026). Full‑stack developer focused on <strong>AI systems</strong>, <strong>distributed apps</strong>, and <strong>social impact</strong> products. <br>Previously at Generous Health and TVCF, and founder of Tchelp.org.</p>
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<div class="actions">
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<a class="btn primary" href="mailto:jk4864@columbia.edu">Email Me</a>
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<a class="btn" href="https://github.com/gitgutgit" target="_blank" rel="noopener">GitHub</a>
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</ul>
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<p><a href="http://tchelp.org/" target="_blank" rel="noopener">Visit site</a></p>
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</article>
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<article class="card">
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<h3>YOLO + PPO Game Agent (Vision → Policy)</h3>
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<p class="meta">PyTorch · Ultralytics YOLO · Reinforcement Learning</p>
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<ul class="list">
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<li>Trained a vision-based agent: YOLO detections are encoded into a 26-D state and fed to a PPO policy.</li>
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<li>Used behavioral cloning from a heuristic expert to bootstrap PPO and prevent degenerate “camping” behaviors.</li>
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<li>Implemented a reproducible pipeline: <code>GameCore</code> (training) + <code>web_app</code> (Socket.IO demo).</li>
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</ul>
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<p><a href="https://github.com/gitgutgit/YOLO-You-Only-Live-Once" target="_blank" rel="noopener">Visit repo</a></p>
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</article>
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<article class="card">
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<h3>Logical Benchmark — Research</h3>
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<p class="meta">LLM strategic reasoning on rule‑based games (Advisor: Prof. Tony Dear)</p>
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<li>Designed metrics to assess model decision‑making.</li>
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</ul>
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</article>
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<article class="card">
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<h3>AI‑Powered Reading Feed</h3>
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<p class="meta">GraphQL middleware + AWS EC2 backend</p>
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<h3>Education</h3>
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<p class="meta">Columbia University — B.S. in Computer Science</p>
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<ul class="list">
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<li>GPA 3.82 · Expected May 2026</li>
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<li>GPA 3.88 · Expected May 2026</li>
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</ul>
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</div>
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<div class="card">

styles.css

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section { margin-top: 32px; }
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.section-title { font-size: 20px; letter-spacing: .02em; margin: 0 0 12px; }
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.cards { display: grid; grid-template-columns: 1fr; gap: 14px; }
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.cards {
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display: grid;
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grid-template-columns: 1fr;
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gap: 14px;
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align-items: start;
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}
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@media (min-width: 760px) {
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.cards { grid-template-columns: repeat(2, 1fr); }
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}
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@media (min-width: 1040px) {
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.cards { grid-template-columns: repeat(2, 1fr); }
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}
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@media (min-width: 760px) { .cards { grid-template-columns: repeat(2, 1fr); } }
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@media (min-width: 1040px) { .cards { grid-template-columns: repeat(3, 1fr); } }
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